CN110012444B

CN110012444B - A working method of an individual wireless monitoring system for precious plant protection

Info

Publication number: CN110012444B
Application number: CN201910224148.6A
Authority: CN
Inventors: 张建福
Original assignee: Shenzhen Lianzhi Iot Technology Co ltd
Current assignee: Shenzhen Lianzhi Iot Technology Co ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2022-03-01
Anticipated expiration: 2039-03-22
Also published as: CN110012444A

Abstract

The invention relates to the technical field of Internet of Things application, and discloses an individual wireless monitoring system for protecting precious plants and a working method thereof. Through the invention of the present invention, on the one hand, the long-distance communication link composed of the wireless terminal, the base station and the background server can be used to realize the purpose of remote uploading of individual positioning related information (including the unique identification information of the base station and the unique identification information of the terminal); The terminal side uses an energy-saving control path composed of a micro-control circuit unit, a power amplifier power supply control circuit unit, a half-duplex transceiver power amplifier circuit and an antenna unit, and can power down the half-duplex transceiver power amplifier circuit and the antenna unit during sleep to save energy operation, so that the sending and receiving of messages can be started periodically or intermittently, so as to achieve the purpose of terminal battery energy saving and delayed battery life, so that the entire individual wireless monitoring system and wireless terminal are more suitable for precious plant protection scenarios.

Description

Working method of individual wireless monitoring system for precious plant protection

Technical Field

The invention belongs to the technical field of application of Internet of things, and particularly relates to an individual wireless monitoring system for precious plant protection and a working method thereof.

Background

At present, the internet of things technology is a technical assembly integrating technologies such as a sensor, a radio frequency identification technology and/or a global positioning system, and can collect any object or process needing monitoring, connection and interaction in real time, collect various required information such as light, heat, electricity, mechanics, chemistry, position and the like, realize ubiquitous connection of objects and people through various possible network accesses, and realize intelligent sensing, identification and management of the objects and the process. Therefore, the technology of the Internet of things is applied to agriculture or forestry, and new improvement of productivity and production efficiency can be achieved.

Precious plants, also called rare plants, are plant species that have important significance in the aspects of economy, science, culture, education and the like and are rare in the existing quantity, and the protection of the precious and rare plants is important for natural protection. However, at present, some precious plants (such as canary wood) are millions in price, and if stolen or lost, the precious plants are lost greatly for growers or managers of the plants. However, the protection work of precious plants always brings many difficulties to managers, such as the managers cannot monitor the field in real time due to rugged terrain; secondly, because the area of the forest area is too large, the quantity counting and individual positioning of precious plants cannot be carried out at any time, and if the precious plants are lost, the precious plants are difficult to find and need to be searched with great energy.

Although the prior art provides a scheme for acquiring positioning data of individual plants through wireless positioning terminals bound by plants, the wireless positioning terminals generally adopt a battery for power supply and utilize a wireless internet of things for quantity inventory, meanwhile, a remote monitoring background is generally arranged close to a settlement point (such as an office building in a pasture or a town), and the distance from a forest area can reach dozens of kilometers, so that the requirements of energy conservation of the wireless positioning terminals and remote transmission of relevant information of individual positioning inevitably exist, and a novel individual wireless monitoring system which can prolong the battery endurance of the terminals and can realize remote transmission of individual positioning information is necessary to be designed.

Disclosure of Invention

The invention aims to solve the requirements of the existing individual wireless monitoring system on terminal battery energy saving, positioning information remote transmission and the like, and provides an individual wireless monitoring system for precious plant protection and a working method thereof.

The technical scheme adopted by the invention is as follows:

an individual wireless monitoring system for precious plant protection comprises a background server, a base station and a plurality of wireless terminals for binding precious plants, wherein the background server can be in wireless communication connection with the base station, the base station can be in wireless communication connection with the wireless terminals, and the base station is used for checking and acquiring terminal unique identification information from the wireless terminals and binding and uploading the local base station unique identification information and the terminal unique identification information to the background server;

wireless terminal includes little control circuit unit, wireless transceiver circuit unit, half-duplex transceiver power amplifier circuit and antenna element and power amplifier power supply control circuit unit, wherein, little control circuit unit wireless transceiver circuit unit with half-duplex transceiver power amplifier circuit and antenna element communication connection in proper order, little control circuit unit's power amplifier enables the output electricity and connects the controlled end of power amplifier power supply control circuit unit, the power supply output electricity of power amplifier power supply control circuit unit is connected half-duplex transceiver power amplifier circuit and antenna element's power supply incoming end.

Preferably, the wireless terminal further comprises an anti-disassembly detection circuit unit in communication connection with the micro control circuit unit.

The system is optimized and further comprises a centralized manager and a repeater, wherein the centralized manager and the repeater are half-duplex transceiving wireless equipment respectively;

the background server can be in communication connection with the base station through a wireless communication link formed by the centralized manager and the plurality of repeaters.

The other technical scheme adopted by the invention is as follows:

a method of operating an individual wireless monitoring system for precious plant protection as hereinbefore described, comprising:

(1) the wireless terminal comprises a sleep mode and an awakening mode;

the sleep mode includes the steps of:

s101, after determining that the power amplifier enters a sleep mode, the micro control circuit unit and the wireless transceiver circuit unit enter an energy-saving working state, and meanwhile the micro control circuit unit controls the power amplifier enabling output end to output a first level signal, so that the power supply output end of the power amplifier power supply control circuit unit outputs low level voltage, and the half-duplex transceiver power amplifier circuit and the antenna unit are powered off and shut down;

the wake pattern comprises the steps of:

s201, after the awakening mode is determined to enter, the micro control circuit unit and the wireless transceiver circuit unit enter a normal working state, meanwhile, the micro control circuit unit controls the power amplifier enabling output end to output a second level signal, so that the power supply output end of the power amplifier power supply control circuit unit outputs high level voltage, and the half-duplex transceiver power amplifier circuit and the antenna unit are powered on to work;

s202, a micro-control circuit unit controls the half-duplex receiving and transmitting power amplification circuit and the antenna unit to enter a simplex receiving state through a wireless receiving and transmitting circuit unit: if receiving terminal wake-up message from base station on wake-up channel, executing steps S203-S205 in sequence, otherwise determining to enter into sleep mode;

s203, packing the locally stored unique terminal identification information into a data uploading message;

s204, the micro-control circuit unit controls the half-duplex receiving and transmitting power amplification circuit and the antenna unit to enter a simplex transmitting state through the wireless receiving and transmitting circuit unit: sending the data uploading message to a base station through a channel competition mechanism on a data channel;

s205, the micro-control circuit unit controls the half-duplex receiving and transmitting power amplification circuit and the antenna unit to enter a simplex receiving state through the wireless receiving and transmitting circuit unit: if the data uploading confirmation message corresponding to the data uploading message is not received on the confirmation channel according to the period, the sending is judged to be failed, then the step S204 is returned to resend the data uploading message until the retransmission times of the data uploading message reach the maximum retransmission times, and finally the data uploading message is determined to enter the sleep mode, otherwise, the data uploading confirmation message is judged to be successful, and the data uploading confirmation message is directly determined to enter the sleep mode;

(2) after wirelessly receiving a terminal inventory starting message from a background server, the base station enters a terminal inventory mode: the terminal wake-up message is wirelessly sent on a wake-up channel, a data upload message from the wireless terminal is received through a monitoring data channel, a data upload confirmation message corresponding to the data upload message is fed back to the wireless terminal on a confirmation channel, and finally the unique identification information of the local base station and the unique identification information of the terminal in the data upload message are bound and uploaded to a background server;

(3) and after the background server receives and binds and stores the unique identification information of the base station and the unique identification information of the terminal in a wireless manner, determining the current position of the plant individual corresponding to the unique identification information of the terminal according to the geographical position of the base station corresponding to the unique identification information of the base station.

Preferably, in the step S202, if the terminal wake-up message further includes terminal grouping indication information, the micro control circuit unit determines the terminal group according to the terminal grouping indication information;

in step S204, the data upload message is sent as follows: and sending the data uploading message to the base station through a channel competition mechanism on a data channel corresponding to the terminal group.

Further optimally, if the terminal grouping indication information is the terminal grouping number, the micro-control circuit unit applies the terminal grouping number to perform remainder calculation on the I D number in the unique identification information of the local terminal, and then determines the terminal grouping according to the remainder calculation result.

Further optimally, after entering a terminal checking mode, the base station also periodically counts the message packet loss rate of each data channel, then obtains the estimated number of the uploading terminals in each terminal group according to the mapping relation between the message packet loss rate and the number of the uploading terminals, and finally adds the unique grouping identification of each terminal group and the estimated number of the uploading terminals in the group to the terminal awakening message or the data uploading confirmation message to be sent before sending the terminal awakening message or the data uploading confirmation message;

after the wireless terminal enters a simplex receiving state, if a terminal awakening message containing a grouping unique identifier of each terminal grouping and the estimated number of uploading terminals in the group or a data uploading confirmation message which is not corresponding to the data uploading message is received, the micro control circuit unit determines the estimated number of the uploading terminals in the group of the terminal grouping according to the grouping unique identifier, and then, the back-off time for sending the data uploading message through a channel competition mechanism is updated and set according to the estimated number.

Preferably, if the background server finds that the uncertain duration of the current position of a certain plant individual exceeds the preset duration, the background server pushes an inventory abnormity warning message to the monitoring platform or the user terminal, wherein the inventory abnormity warning message comprises terminal unique identification information and plant individual basic information corresponding to the plant individual.

Preferably, the data upload confirmation message includes terminal unique identification information of a plurality of wireless terminals.

Preferably, if the wireless terminal further includes a tamper detection circuit unit, the method further includes the following steps:

after the micro control circuit unit enters a normal working state, reading and storing an anti-disassembly detection result from the anti-disassembly detection circuit unit, and adding the locally stored anti-disassembly detection result into a data uploading message to be sent before sending the data uploading message;

the base station also binds and uploads the terminal unique identification information and the anti-disassembly detection result in the data uploading message to the background server;

the background server determines the current terminal binding condition of the plant individual corresponding to the terminal unique identification information according to the anti-dismantling detection result after wirelessly receiving the terminal unique identification information and the anti-dismantling detection result uploaded by the binding, and pushes the counting abnormity warning message to a monitoring platform or a user terminal if the current terminal binding condition of a certain plant individual is found to be violently dismantled, wherein the counting abnormity warning message also comprises the current position corresponding to the plant individual.

The invention has the beneficial effects that:

(1) the invention provides a novel individual wireless monitoring system which can prolong the battery endurance of a terminal and realize the remote transmission of individual positioning information, on one hand, a remote communication link consisting of a wireless terminal, a base station and a background server is utilized, can realize the remote uploading of the individual positioning related information (including the unique identification information of the base station and the unique identification information of the terminal), on the other hand, the energy-saving control channel consisting of the micro-control circuit unit, the power amplifier power supply control circuit unit, the half-duplex transceiver power amplifier circuit and the antenna unit is utilized at the wireless terminal side, the half-duplex transceiver power amplifier circuit and the antenna unit can be powered off and energy-saving operated when in dormancy, therefore, the receiving and sending messages can be started periodically or intermittently, the purposes of saving energy of a terminal battery and delaying the endurance capacity are achieved, and the whole individual wireless monitoring system and the wireless terminal are more suitable for precious plant protection scenes;

(2) by adopting the working method comprising the sleep mode and the wake mode at the wireless terminal side, the wireless terminal can be further prompted to fully utilize various unnecessary wake time slots to carry out sleep energy saving in the individual information uploading process, and the optimal energy saving purpose is achieved;

(3) the complete process of storing and processing the individual positioning information (including the unique identification information of the base station and the unique identification information of the terminal) from the field wireless terminal to the background can be realized, so that the base station and the background server can quickly acquire the relevant information of the individual positioning, the wireless monitoring timeliness of the individual positioning of the plants is ensured, and the intelligent process of the existing forestry and agriculture is further facilitated;

(4) the wireless terminal also has the advantages of detachable triggering alarm, capability of indicating the receiving and sending states, capability of monitoring the power supply condition, simple circuit structure, easiness in product realization and the like, and is convenient for practical popularization and application.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a block diagram of a system architecture of an individual wireless monitoring system provided by the present invention.

Fig. 2 is a circuit diagram of a micro-control circuit unit and a transceiver state indicating circuit unit in a wireless terminal according to the present invention.

Fig. 3 is a circuit diagram of a wireless transceiver circuit unit in a wireless terminal according to the present invention.

Fig. 4 is a circuit diagram of a half-duplex transceiver circuit, an antenna unit and a power amplifier power supply control circuit unit in a wireless terminal according to the present invention.

Fig. 5 is a circuit diagram of an operation power supply circuit unit and an operation voltage detection circuit unit in a wireless terminal according to the present invention.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.

It will be understood that when an element is referred to as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly adjacent" or "directly coupled" to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between … …" versus "directly between … …", "adjacent" versus "directly adjacent", etc.).

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.

It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.

In the following description, specific details are provided to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.

Example one

As shown in fig. 1 to 5, the individual wireless monitoring system for precious plant protection provided in this embodiment includes a background server, a base station, and a plurality of wireless terminals for binding precious plants, where the background server is capable of wirelessly communicating with the base station, the base station is capable of wirelessly communicating with the wireless terminals, and the base station is configured to check and acquire unique terminal identification information from the wireless terminals, and bind and upload unique local base station identification information and the unique terminal identification information to the background server; the wireless terminal comprises a micro-control circuit unit, a wireless transceiver circuit unit, a half-duplex transceiver power amplifier circuit, an antenna unit and a power amplifier power supply control circuit unit, wherein the micro-control circuit unit, the wireless transceiver circuit unit and the half-duplex transceiver power amplifier circuit and the antenna unit are sequentially in communication connection, a power amplifier enabling output PAEN of the micro-control circuit unit is electrically connected with a controlled end of the power amplifier power supply control circuit unit, and a power supply output end VPA of the power amplifier power supply control circuit unit is electrically connected with a power supply access end of the half-duplex transceiver power amplifier circuit and the antenna unit.

As shown in fig. 1, in the specific structure of the individual wireless monitoring system, the wireless terminal is configured to upload local terminal unique identification information to the base station after waking up, so as to implement individual positioning. The base station is used as an intermediate node to be arranged in a forest area, on one hand, the wireless terminal in a intermittent dormant state is awakened, terminal unique identification information uploaded by the wireless terminal is acquired through inventory, and on the other hand, the local base station unique identification information and the terminal unique identification information are bound and uploaded to a background server in a wireless communication mode. The background server is used for gathering the base station unique identification information of all the wireless terminals corresponding to the uploading base station, storing data and/or displaying data, and further determining the current position of the plant individual corresponding to the terminal unique identification information according to the base station geographic position corresponding to the base station unique identification information, namely realizing the approximate positioning of the bound plant, so that managers can check whether the precious plant is still in the forest area and find the stolen situation in time. In addition, when the base station is a wireless communication node, in order to effectively extend the communication distance between the base station and a background server, the meteorological data wireless monitoring system further comprises a centralized manager and a repeater, wherein the centralized manager and the repeater are half-duplex transceiving wireless devices respectively; the background server can be in communication connection with the base station through a wireless communication link formed by the centralized manager and the plurality of repeaters. The relay is used as a relay node between the base station and the centralized manager, and the centralized manager is used for periodically transmitting the information to the background server after aggregating the base station unique identification information of all the wireless terminals corresponding to the uploaded base station.

As shown in fig. 1, in the specific structure of the wireless terminal, the micro control circuit unit is used for controlling the terminal to switch between the sleep mode and the wake mode: (1) when the semi-duplex transceiving power amplifier and the antenna unit are determined to enter the sleep mode, the unit and the wireless transceiving circuit unit are controlled to enter an energy-saving working state, and meanwhile, a power amplifier enabling output end PAEN is controlled to output a first level signal (such as a low level signal), so that a power supply output end VPA of the power amplifier power supply control circuit unit outputs a low level voltage, and the semi-duplex transceiving power amplifier circuit and the antenna unit are powered off; (2) when the wakeup mode is determined to be entered, the unit and the wireless transceiving circuit unit are controlled to enter a normal working state, at the same time, the power amplifier enable output terminal PAEN is controlled to output a second level signal (such as a high level trigger signal), so that the power supply output terminal VPA of the power amplifier power supply control circuit unit outputs a high level voltage, and further the half-duplex transceiver power amplifier circuit and the antenna unit are electrified to work, then after receiving the terminal awakening message from the base station through the half-duplex receiving and transmitting power amplification circuit, the antenna unit and the wireless receiving and transmitting circuit unit, packing the locally stored terminal unique identification information into a data uploading message, and finally, the data uploading message is transmitted to the base station through the wireless transceiver circuit unit, the half-duplex transceiver power amplifier circuit and the antenna unit, so that the purpose of uploading terminal information is realized. As shown in fig. 2, in particular, the micro control circuit unit may be, but is not limited to, a micro controller chip U1 of model STM8L052C6TC and its peripheral circuits.

The wireless transceiver circuit unit is used for switching between an energy-saving working state and a normal working state under the control of the micro-control circuit unit, wherein in the normal working state, the half-duplex transceiver power amplifier circuit and the antenna unit are controlled to switch between a simplex receiving state and a simplex transmitting state according to the indication of the micro-control circuit unit, in the simplex receiving state, analog electric signals received by the half-duplex transceiver power amplifier circuit and the antenna unit are subjected to corresponding analog-digital processing (for example, demodulation, decoding, message verification and the like), then digital information obtained by processing is transmitted to the micro-control circuit unit, and in the simplex transmitting state, feedback information from the micro-control circuit unit is subjected to corresponding digital-analog processing (for example, packaging, encoding, modulation and the like), and then sending the processed analog signal to the half-duplex transceiver power amplifier circuit and the antenna unit for wireless transmission. As shown in fig. 3, in particular, the wireless transceiver circuit unit may employ, but is not limited to, a wireless transceiver chip U2 of type CY693940LFXC and its peripheral circuits.

The half-duplex receiving and transmitting power amplification circuit and the antenna unit are used for switching between a simplex receiving state and a simplex transmitting state under the control of the wireless receiving and transmitting circuit unit when the power is on for work so as to carry out half-duplex communication with the base station. As shown in fig. 4, specifically, the half-duplex transceiver and power amplifier circuit and the antenna unit may be, but not limited to, a power amplifier chip U3 with model SE2611T and a single-way inverter U4 with model SN74LVC1G04DBVT and include a sixth capacitor C40 and a seventh capacitor C41, wherein, the LEN pin and the CRX pin of the power amplifier chip U3 are respectively and electrically connected with the Y pin of the single-circuit reverser U4, the PEN pin and the CTX pin of the power amplifier chip U3 and the A pin of the single-way reverser U4 are respectively and electrically connected with a half-duplex transceiving switching end TX of the wireless transceiving circuit unit, the TX pin of the power amplifier chip U3 is electrically connected with the radio frequency signal connecting end RFIN of the wireless transceiving circuit unit after being connected with the sixth capacitor C40 in series, and an RX pin of the power amplifier chip U3 is electrically connected with a radio frequency signal connecting end RFIN of the wireless transceiving circuit unit after being connected with the sixth capacitor C40 in series. As is known from the chip manual combining the Power amplifier chip U3 and the one-way inverter U4, the a pin of the one-way inverter U4 (serving as the input pin of the one-way inverter U4) is used to input the switching level from the half-duplex transceiving switching terminal TX, and then outputs the opposite level to the LEN pin (LNA enable, low noise amplifier enable pin) and the CRX pin (WLAN receive antenna switching control pin) of the Power amplifier chip U3 through the Y pin of the one-way inverter U4 (serving as the output pin of the one-way inverter U4), so that the input levels of the LEN pin and the CRX pin (Power amplifier enable ) and the CTX pin (WLAN transmit antenna switching control pin) are always different from each other, that is, when an active level signal (for example, a high level signal) is input to the LEN pin and the CRX pin, an inactive level signal (for example, a low level signal) is input to the PEN pin and the CTX pin, so that the power amplifier chip U3 enters a simplex receiving state, and when an inactive level signal (for example, a low level signal) is input to the LEN pin and the CRX pin, an active level signal (for example, a high level signal) is input to the PEN pin and the CTX pin, so that the power amplifier chip U3 enters a simplex transmitting state, so that the purpose of switching between the simplex receiving state and the simplex transmitting state under the control of the wireless transceiver circuit unit can be achieved. In addition, a TX pin (WLAN transmit port) and an RX pin (WLAN receive port) of the power amplifier chip U3 are respectively used as an input end of a feedback signal and an output end of a received signal, and are communicatively connected to the radio frequency signal connection end RFIN of the wireless transceiver circuit unit, so as to achieve the transmission purpose of different signals.

The power amplifier power supply control circuit unit is used for outputting different level voltages under the control of the micro control circuit unit so as to complete the power-on or power-off operation of the half-duplex transceiving power amplifier circuit and the antenna unit and further cooperate with a corresponding awakening mode or a corresponding sleeping mode. As shown in fig. 4, specifically, the power amplifier power supply control circuit unit may adopt, but is not limited to, a low dropout regulator chip U5 with model number MCP1824T-3302e/OT and includes a third capacitor Cap4, a fourth capacitor C13, a fifth capacitor C14 and a second resistor R5, where the low dropout regulator chip U5 has a first terminal connected to the first terminal of the low dropout regulator chip U5

A pin (Shutdown pin) serving as a controlled end of the power amplifier power supply control circuit unit is electrically connected with a power amplifier enable output end PAEN (Power amplifier enable) of the micro control circuit unit, and VIN pins (input pins) of the low dropout linear regulator chip U5 are respectively and electrically connectedA battery power supply access terminal VBT, one end of the third capacitor Cap4, and one end of the fourth capacitor C13, a GND pin (i.e., a ground pin) of the low-dropout linear regulator chip U5, the other end of the third capacitor Cap4, and the other end of the fourth capacitor C13 are respectively grounded, a VOUT pin (i.e., an output pin) of the low-dropout linear regulator chip U5 is electrically connected to a power supply output terminal VPA of the power amplifier power supply control circuit unit, one end of the fifth capacitor C14, and one end of the second resistor R5, a PWRGD pin of the low-dropout linear regulator chip U5 is electrically connected to the other end of the second resistor R5, and the other end of the fifth capacitor C14 is grounded. As is clear from the chip manual incorporating the low dropout regulator chip U5, the low dropout regulator chip U5

When a low-level signal is input into a pin, a low-level voltage can be output at the VOUT pin, the power supply to the half-duplex transceiver power amplification circuit and the antenna unit is interrupted, and the low-dropout linear regulator chip U5 is connected

When a high-level signal is input into the pin, high-level voltage can be output at the pin VOUT to start power supply to the half-duplex transceiver power amplifier circuit and the antenna unit, so that power-on or power-off operation of the half-duplex transceiver power amplifier circuit and the antenna unit can be completed, and the advantage of short operation delay time is achieved.

In addition, the wireless terminal should further include a storage battery unit to provide electric energy support for the micro control circuit unit, the wireless transceiver circuit unit, the half-duplex transceiver power amplifier circuit and antenna unit, and the power amplifier power supply control circuit unit, etc., wherein the storage battery unit may be, but is not limited to, a lithium battery or other batteries.

Therefore, through the detailed description of the individual wireless monitoring system and the wireless terminal, on one hand, the purpose of remotely uploading individual positioning related information (including the unique identification information of the base station and the unique identification information of the terminal) can be realized by using a remote communication link formed by the wireless terminal, the base station and the background server, on the other hand, an energy-saving control channel formed by a micro-control circuit unit, a power amplifier power supply control circuit unit, a half-duplex transceiving power amplifier circuit and an antenna unit is used on the wireless terminal side, so that the half-duplex transceiving power amplifier circuit and the antenna unit can be powered off and energy-saving operated during dormancy, the transceiving messages can be started periodically or intermittently, the purposes of saving energy of a terminal battery and delaying endurance are realized, and the whole individual wireless monitoring system and the wireless terminal are more suitable for a precious plant protection scene.

In order to further achieve the purpose of saving energy of a terminal battery, the foregoing working method of the individual wireless monitoring system for precious plant protection may further include the following specific working methods of the wireless terminal, the base station, and the background server.

(1) The specific operation method of the wireless terminal includes a sleep mode and an awake mode, wherein the sleep mode may include, but is not limited to, the following steps S101:

s101, after the fact that the wireless transceiving circuit unit enters the sleep mode is confirmed, the micro control circuit unit and the wireless transceiving circuit unit enter an energy-saving working state, meanwhile, the micro control circuit unit controls a power amplifier enabling output end PAEN to output a first level signal, a power supply output end VPA of the power amplifier power supply control circuit unit outputs low level voltage, and the half-duplex transceiving power amplifier circuit and the antenna unit are shut down electrically.

In step S101, whether to enter the sleep mode is determined by the micro control circuit unit according to actual conditions, once entering the sleep mode, the micro control circuit unit and the wireless transceiver circuit unit maintain the most basic operation, such as timing operation, in the most energy-saving state, and the half-duplex transceiver power amplifier circuit and the antenna unit are powered down without energy loss, so that a large amount of electric energy can be saved in the sleep stage.

In addition, the wake mode may include, but is not limited to, the following steps S201 to S205.

S201, after the awakening mode is determined to be entered, the micro control circuit unit and the wireless receiving and transmitting circuit unit enter a normal working state, meanwhile, the micro control circuit unit controls the power amplifier enabling output end PAEN to output a second level signal, so that the power supply output end VPA of the power amplifier power supply control circuit unit outputs high level voltage, and the half-duplex receiving and transmitting power amplifier circuit and the antenna unit are electrified and work.

In step S201, whether to enter the wake-up mode is determined by the micro control circuit unit according to actual conditions, once the wake-up mode is entered, the micro control circuit unit and the wireless transceiver circuit unit will both resume normal operation, and then read and store the individual health record data from the health sensor, and at the same time, the half-duplex transceiver power amplifier circuit and the antenna unit will be powered on to prepare to receive or transmit air interface messages at any time.

S202, a micro-control circuit unit controls the half-duplex receiving and transmitting power amplification circuit and the antenna unit to enter a simplex receiving state through a wireless receiving and transmitting circuit unit: if receiving the terminal wake-up message from the base station on the wake-up channel, sequentially executing steps S203 to S205, otherwise determining to enter the sleep mode.

In step S202, the terminal wake-up message is a dedicated air interface message from the base station and used for waking up an intermittent dormant terminal (i.e. a wireless terminal in this embodiment), and in order to improve the terminal wake-up probability, the terminal wake-up message may be preferably sent in the following manner: the method comprises the steps of continuously and periodically sending a plurality of terminal wake-up messages on a wake-up channel in a first period, wherein the terminal wake-up messages comprise first period time length information and current message sending clock information, the first period time length information is used for indicating the time length t of the first period, and the current message sending clock information is used for indicating a timestamp t from the starting time of the first period to the current message sending time_x. Through the information configuration, the intermittent sleep terminal can know the sending end time of the terminal awakening message in the current round after acquiring the first period time length information and the current message sending clock information, and further can set a longer temporary sleep time (namely t-t)_x) To perform timed sleep (i.e. enter a brief sleep mode) and sleep directly to the transmission nodeAnd then waking up (namely entering the awakening mode again) so as to be beneficial to saving energy of the terminal. In addition, the wake-up channel is a dedicated channel dedicated to transmitting a terminal wake-up related message (including but not limited to the terminal wake-up message) over the air interface.

In detail, the duration T of the first time interval is greater than the sleep cycle T of the intermittent sleeping terminal, and the sleep cycle T includes the periodic sleeping duration T of the intermittent sleeping terminal_sleepAnd the periodic wake duration T_wakeThe sending period of the terminal wake-up message is less than the period wake-up duration T of the wireless terminal_wake. Through the time length setting, the intermittent dormant terminal can be ensured to completely receive the terminal awakening message in the awakening time length of any sleep period, and awakening omission is avoided. For example, if the periodic wake period T is_wakeIs 100ms, the period sleep time T_sleepAnd 3900ms, the sleep cycle of the intermittent sleep terminal is 4 seconds, the transmission cycle can be designed to be 60ms (assuming that the transmission time length of the terminal wake-up message is 50ms, and a time slot interval of 10ms is reserved), and the time length of the first time period can be designed to be 4020ms, that is, the terminal wake-up message can be continuously transmitted 67 times.

Preferably, if all the intermittently sleeping terminals are to be woken up, the terminal wake-up message may be designed as a broadcast message, and at this time, for the intermittently sleeping terminals, it may not be necessary to know the sender identity and/or the receiver identity of the terminal wake-up message, and therefore, the terminal wake-up message may further include a source address invalid bit and/or a broadcast address invalid bit, where the source address invalid bit is used to indicate that no source address information exists in the terminal wake-up message, the broadcast address invalid bit is used to indicate that no broadcast address information exists in the terminal wake-up message, the source address information is used to indicate the sender identity of the terminal wake-up message, and the broadcast address information is used to indicate the receiver identity of the terminal wake-up message. By the address default configuration of the terminal awakening message, the message length (generally 4 bytes or 8 bytes) and the sending time can be effectively shortened, so that the energy conservation of a message sender is facilitated, the channel utilization rate is improved, the periodic awakening time of the intermittent dormant terminal can be effectively shortened, and the energy conservation of the terminal is further facilitated.

Optimally, considering that the forest area is large and precious plants may be hundreds of thousands, in order to reduce the probability of air interface collision of subsequent numerous data upload messages in the competition upload process, so that the base station can quickly acquire all the data upload messages, the wireless terminals can be guided to independently group through the terminal wake-up message, and the wireless terminals are enabled to upload messages in parallel on different data channels, that is, in the step S202, if the terminal wake-up message further includes terminal group indication information, the micro control circuit unit determines the terminal group according to the terminal group indication information. The terminal grouping indication information is used for helping the wireless terminal to determine the terminal grouping, optimization is further performed, if the terminal grouping indication information is the terminal grouping number, the micro-control circuit unit applies the terminal grouping number to perform complementation calculation on the ID number in the unique identification information of the local terminal, and then the terminal grouping is determined according to the complementation calculation result. Of course, other ways may be used to help the wireless terminal to determine the terminal group by itself, for example, according to the terminal ID number. The wireless terminal can automatically determine the terminal group and only feed back the inventory data on the data channel corresponding to the terminal group, so that massive wireless terminals can be distributed in different channels to upload data, the aims of concurrently uploading data and reducing collision probability are fulfilled, and the inventory tasks of all the wireless terminals can be quickly completed. For example, for a forest plant inventory scene with 1000 wireless terminals, the number of the terminal groups can be designed to be 4, and then the mass of terminals can be divided into 4 groups, each group theoretically has 250 wireless terminals, and the wireless terminals compete for uploading data uploading messages on 4 different data channels, so that the purposes of 4-way data parallel transmission and collision probability reduction can be achieved. In addition, the data channel may be a dedicated channel different from the wakeup channel, and a correspondence relationship between the data channel and the terminal packet may be defaulted by a standard protocol, or may be specified in the terminal wakeup message, for example, a first data channel is specified for a terminal packet whose remainder is 0; for a terminal group with a remainder of 1, designating a second data channel; for a terminal packet with a remainder of 2, a third data channel is designated, and so on.

And S203, packing the locally stored unique terminal identification information into the data uploading message.

Before step S203, optimally, when the terminal wake-up message further includes an unique upload task identifier and temporary sleep duration information, after the terminal wake-up message is wirelessly received, the micro-control circuit unit determines whether the corresponding individual health record data upload task has been completed according to the unique upload task identifier, and if it is determined that the corresponding individual health record data upload task has been completed, determines to enter a temporary sleep mode according to the temporary sleep duration information. Therefore, subsequent steps S203-S205 are not executed any more, repeated message uploading is avoided, timely dormancy is realized, and energy conservation of the terminal is further facilitated.

S204, the micro-control circuit unit controls the half-duplex receiving and transmitting power amplification circuit and the antenna unit to enter a simplex transmitting state through the wireless receiving and transmitting circuit unit: and sending the data uploading message to the base station through a channel competition mechanism on a data channel.

In step S204, if the wireless terminal has determined the terminal group through the terminal group indication information, the data upload message needs to be sent as follows: and sending the data uploading message to the base station through a channel competition mechanism on a data channel corresponding to the terminal group. The data channel is a dedicated channel dedicated to transmitting upload data related messages (including but not limited to the data upload message) in the air interface, and may be the same as or different from the wake-up channel.

S205, the micro-control circuit unit controls the half-duplex receiving and transmitting power amplification circuit and the antenna unit to enter a simplex receiving state through the wireless receiving and transmitting circuit unit: if the data upload confirmation message corresponding to the data upload message is not received on the confirmation channel according to the period, the transmission is judged to be failed, then the step S204 is returned to resend the data upload message until the retransmission times of the data upload message reach the maximum retransmission times, and finally the data upload message is determined to enter the sleep mode, otherwise, the data upload confirmation message is judged to be successful, and the data upload message is directly determined to enter the sleep mode.

In step S205, the acknowledgement channel is a dedicated channel dedicated to transmitting a transmission acknowledgement related message (including but not limited to the data upload acknowledgement message) over the air interface, and may be the same as or different from the wakeup channel or the data channel. In addition, preferably, if the data upload confirmation message includes second temporary dormancy duration information, the micro control circuit unit determines to enter a temporary dormancy mode according to the second temporary dormancy duration information after the wireless terminal wirelessly receives the data upload confirmation message. Because the wireless terminal sends the data uploading message through a channel competition mechanism, the phenomenon of receiving failure caused by collision risk exists, whether the terminal is successfully received needs to be informed, and when the receiving is successfully informed, the time length that the wireless terminal which finishes data uploading can immediately enter a sleep mode can be informed through the configuration of the second temporary sleep time length information, the specific time length can be set according to the estimated time length of all the terminals which finish the inventory and are uploading, so that for the terminal which finishes the inventory, because the wireless terminal does not need to be awakened again and feed back individual information in a preset time period (the time period is used for finishing inventory tasks of other terminals which do not finish the inventory), a large amount of data uploading messages can be reduced at an air interface, the purpose of reducing the collision probability of the messages is realized, and the data uploading tasks of all the wireless terminals are finished quickly, the wireless terminal can also enter a longer dormant state, unnecessary energy consumption is avoided, and the terminal is finally beneficial to saving energy and prolonging the endurance time.

Therefore, through the detailed steps of the sleep mode and the awakening mode, the wireless terminal can be further prompted to fully utilize various unnecessary awakening time slots to perform sleep energy conservation in the individual information uploading process, and the optimal energy conservation purpose is achieved.

(2) The specific operation method of the base station may include, but is not limited to: after wirelessly receiving a terminal inventory starting message from a background server, entering a terminal inventory mode: and the terminal wake-up message is wirelessly sent on a wake-up channel, the data upload message from the wireless terminal is received through an interception data channel, the data upload confirmation message corresponding to the data upload message is fed back to the wireless terminal on a confirmation channel, and finally the unique identification information of the local base station and the unique identification information of the terminal in the data upload message are bound and uploaded to a background server.

The generation mode of the terminal checking start message may be generated by manual intervention or may be generated automatically at regular time, and needs to include base station address information (which may be the same as or different from the unique identification information of the base station), where the base station address information is used to indicate a base station that needs to enter a terminal checking mode immediately, and then the base station determines whether the base station address information matches with a local base station address, and if so, the base station enters the terminal checking mode: and awakening all the wireless terminals in the dormant state, collecting the terminal unique identification information from each wireless terminal, and uploading the collected terminal unique identification information to the background server. Optimally, in order to increase the operation speed of the base station and avoid the occurrence of data redundancy, the method further comprises the following steps: when the base station enters a terminal checking mode, the local cache data is cleared, and a message of successful terminal checking starting is fed back to a background server. In addition, in order to avoid repeatedly starting the inventory task, it is optimized that before the base station finishes the terminal inventory mode, if the base station receives a terminal inventory starting message from the background server again, the base station feeds back a terminal inventory starting failure message to the background server, wherein the terminal inventory starting failure message includes the inventory already indicating information. Therefore, the background server can be informed that the terminal is checked currently, and repeated starting is not needed.

Preferably, if the terminal inventory starting message further includes inventory mode indication information, when the inventory mode indication information indicates a long-disk mode, the base station immediately ends the terminal inventory mode after receiving a terminal inventory ending message from the background server, and when the inventory mode indication information indicates a fast-disk mode, the base station regularly ends the terminal inventory mode according to the inventory duration information in the terminal inventory starting message or immediately ends the terminal inventory mode after receiving the terminal inventory ending message from the background server. The checking mode indication information is used for indicating whether the base station enters a long disc mode or a fast disc mode: (1) after entering the long-distance disc mode, the base station continuously collects the terminal unique identification information from the wireless terminal and returns the terminal unique identification information to the background server, and the base station stops the terminal counting until receiving the terminal counting finishing message (the generation mode of the terminal counting finishing message can be consistent with the terminal counting starting message); (2) after entering the fast-disk mode, the base station will regularly collect the terminal unique identification information from the wireless terminal and return the information to the background server, and the terminal will stop (i.e. can finish in advance) until the counting time (countdown or count-forward) reaches the counting time length or the terminal counting finishing message is received. Through the two modes, the terminal can be checked regularly or irregularly, and the flexible application requirement is met.

In addition, the method of binding and uploading the unique identification information of the local base station and the unique identification information of the terminal in the data uploading message to the background server can be set in advance in the terminal inventory starting message, namely optimized, the terminal inventory starting message comprises data return indicating information, when the data return indicating information indicates that data is directly returned, the base station periodically binds and uploads the unique identification information of the local base station and the latest received unique identification information of the terminal to the background server, and when the data return indicating information indicates that data is read and returned, the base station binds and uploads the unique identification information of the local base station and the unique identification information of the terminal received by the cache to the background server after receiving a data reading request message from the background server.

Preferably, after entering a terminal checking mode, the base station periodically counts the message packet loss rate of each data channel, then obtains the estimated number of uploading terminals in each terminal packet according to the mapping relationship between the message packet loss rate and the number of the uploading terminals, then determines a first terminal packet with the maximum number of the uploading terminals and a second terminal packet with the minimum number of the uploading terminals, and finally sends a terminal packet change message on a wakeup channel and/or a confirmation channel, wherein each terminal packet corresponds to each data channel one by one, and the terminal packet change message comprises a packet unique identifier of the first terminal packet, a packet unique identifier of the second terminal packet and a common special identifier of a part of wireless terminals belonging to the first terminal packet. Because the message packet loss rate is caused by message collision to a great extent, a mapping relation between the message packet loss rate and the number of non-uploaded terminals can be obtained through a conventional test, and the mapping relation can be a mapping relation in a logarithmic range, for example, for the message packet loss rate of 0-1%, the number of the corresponding non-uploaded terminals can be 0-50; aiming at the message packet loss rate of 2-3%, the number of corresponding non-uploading terminals can be 100-200. In addition, the estimated number and the estimated remaining uploading time can be obtained through routine experiments. Further, the common unique identifier may be, but is not limited to, the last digit of the number of terminal I D.

Further optimally, in order to enable the wireless terminal which does not finish data uploading to perform self-grouping change according to the terminal grouping change message and achieve the purpose of grouping balance, after the wireless terminal enters a simplex receiving state, if the wireless terminal receives the terminal grouping change message, the micro control circuit unit judges whether the I D number in the local terminal unique identification information is matched with the common special identification, and if the wireless terminal is judged to be matched with the common special identification, the wireless terminal grouping is changed from the first terminal grouping to the second terminal grouping according to the grouping unique identification of the first terminal grouping and the grouping unique identification of the second terminal grouping. Therefore, by the method, part of the wireless terminals can be divided into a small number of second terminal groups from a large number of first terminal groups, the inventory progress of the wireless terminals in the first terminal groups is accelerated, and finally, the inventory tasks of all the wireless terminals are completed quickly.

Further optimally, in order to enable the wireless terminal which does not finish data uploading to know the number of terminals which are uploading in the group of the terminal group, so as to dynamically set the back-off time for sending the data uploading message through a channel competition mechanism, the base station can add the grouping unique identifier of each terminal group and the estimated number of the terminals which are uploading in the group to the terminal waking message, the data uploading confirmation message or the terminal group changing message which is to be sent before sending the terminal waking message, the data uploading confirmation message or the terminal group changing message. Therefore, after the wireless terminal enters a simplex receiving state, if a terminal awakening message containing the grouping unique identifier of each terminal grouping and the estimated number of the uploading terminals in the group and a data uploading confirmation message or a terminal grouping change message which is not corresponding to the data uploading message are received, the micro control circuit unit can determine the estimated number of the uploading terminals in the group of the terminal grouping according to the grouping unique identifier, and then update and set the backoff time for sending the data uploading message through a channel competition mechanism according to the estimated number. The specific way for the wireless terminal to update and set the back-off time according to the estimated number may be: and setting longer current back-off time or maximum back-off time when the estimated number is larger, and setting shorter current back-off time or maximum back-off time when the estimated number is smaller, so that the dynamic setting of the back-off time is further favorable for reducing the message packet loss rate and quickly finishing all data uploading tasks.

Preferably, if data are uploaded concurrently, a plurality of data upload messages are successfully received at the same time, and in order to reduce the time length for the wireless terminal to listen to the acknowledgement channel and facilitate terminal energy saving, it is necessary to perform parallel acknowledgement, that is, further, the data upload acknowledgement message includes terminal unique identification information of a plurality of wireless terminals, and then data reception acknowledgement can be performed to the plurality of wireless terminals using the same message frame.

(3) The specific working method of the background server may include, but is not limited to: and after the unique identification information of the base station and the unique identification information of the terminal are wirelessly received and bound and stored, determining the current position of the plant individual corresponding to the unique identification information of the terminal according to the geographical position of the base station corresponding to the unique identification information of the base station.

Optimally, in order to realize the purpose of timely early warning the loss of individual plants, the specific working method of the background server can further comprise the following steps: if the uncertain duration of the current position of a certain plant individual exceeds the preset duration, pushing an inventory abnormity warning message to a monitoring platform or a user terminal, wherein the inventory abnormity warning message comprises terminal unique identification information and plant individual basic information corresponding to the plant individual.

Therefore, through the specific working methods of the (1), (2) and (3), the complete process of storing and processing the individual positioning information (including the unique identification information of the base station and the unique identification information of the terminal) from the field wireless terminal to the background can be realized, so that the base station and the background server can quickly acquire the relevant information of individual positioning, the wireless monitoring timeliness of individual positioning of plants is ensured, and the existing intelligent forestry and agriculture is further facilitated.

Preferably, the wireless terminal further comprises an anti-disassembly detection circuit unit in communication connection with the micro control circuit unit. As shown in fig. 1, the tamper detection circuit unit is configured to detect whether a binding relationship between the terminal and the plant is in a detached state, and transmit a detection result to the micro control circuit unit, so that the detection result is uploaded to a background server in a data uploading process, thereby achieving a purpose of tamper alarm. The specific working method of the wireless terminal further includes: after the micro control circuit unit enters a normal working state, the anti-disassembly detection result from the anti-disassembly detection circuit unit is read and stored, and before the data uploading message is sent, the locally stored anti-disassembly detection result is added into the data uploading message to be sent. The specific working method of the base station further comprises the following steps: and binding and uploading the terminal unique identification information and the anti-dismantling detection result in the data uploading message to a background server. The specific working method of the background server further comprises the following steps: after the terminal unique identification information and the anti-dismantling detection result which are uploaded in a binding mode are received in a wireless mode, the current terminal binding condition of the plant individual corresponding to the terminal unique identification information is determined according to the anti-dismantling detection result, if the current terminal binding condition of a certain plant individual is found to be disassembled violently, the checking abnormity warning message is also pushed to a monitoring platform or a user terminal, and the checking abnormity warning message further comprises the current position corresponding to the plant individual.

Preferably, the wireless terminal further comprises a transceiving state indicating circuit unit, wherein the transceiving state indicating circuit unit comprises bidirectional light emitting diode LEDs, a third resistor R12 and a fourth resistor R16, one end of the bidirectional light emitting diode LEDs is electrically connected to the second output end LEDB of the micro control circuit unit, the other end of the bidirectional light emitting diode LEDs is electrically connected to one end of the third resistor R12 and one end of the fourth resistor R16, the other end of the third resistor R12 is electrically connected to the third output end LEDA of the micro control circuit unit, and the other end of the fourth resistor R16 is grounded. As shown in fig. 1 and 2, by providing the transceiver status indication circuit unit, when in a simplex reception status or a simplex transmission status, the two-way light emitting diodes LEDs can emit different colors to indicate corresponding transceiver statuses by outputting different levels at the second output terminal LEDB and the third output terminal LEDA of the micro control circuit unit, for example, emit red light to indicate the simplex transmission status, and emit green light to indicate the simplex reception status, which can facilitate the user to perform device detection and verification.

Preferably, the wireless terminal further comprises a working power supply circuit unit and a working voltage detection circuit unit, wherein a detection voltage output end ADCW of the working voltage detection circuit unit is electrically connected to the second input end of the micro control circuit unit. As shown in fig. 1 and 5, the working voltage detection circuit unit is configured to detect whether the working power supply of the terminal battery is normal, and if the working power supply of the terminal battery is abnormal, the working voltage detection circuit unit can be detected by the micro control circuit unit, so as to report and send an alarm message indicating that the corresponding power supply condition is abnormal to the base station and the background server.

In summary, the individual wireless monitoring system for precious plant protection and the working method thereof provided by the embodiment have the following technical effects:

(1) the embodiment provides a novel individual wireless monitoring system which can prolong the battery endurance of a terminal and realize the remote transmission of individual positioning information, on one hand, a remote communication link consisting of a wireless terminal, a base station and a background server is utilized, can realize the remote uploading of the individual positioning related information (including the unique identification information of the base station and the unique identification information of the terminal), on the other hand, the energy-saving control channel consisting of the micro-control circuit unit, the power amplifier power supply control circuit unit, the half-duplex transceiver power amplifier circuit and the antenna unit is utilized at the wireless terminal side, the half-duplex transceiver power amplifier circuit and the antenna unit can be powered off and energy-saving operated when in dormancy, therefore, the receiving and sending messages can be started periodically or intermittently, the purposes of saving energy of a terminal battery and delaying the endurance capacity are achieved, and the whole individual wireless monitoring system and the wireless terminal are more suitable for precious plant protection scenes;

The embodiments described above are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device to perform the methods described in the embodiments or some portions of the embodiments.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some technical features may still be made. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Finally, it should be noted that the present invention is not limited to the above alternative embodiments, and that various other forms of products can be obtained by anyone in light of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the claims, and which the description is intended to be interpreted accordingly.

Claims

1. the working method of the individual wireless monitoring system that is used for precious plant protection, is characterized in that, described individual wireless monitoring system comprises backstage server, base station and some wireless terminals that are used to bind precious plants, wherein, described backstage The server can be wirelessly connected to the base station, and the base station can be wirelessly connected to the wireless terminal. The base station is used to take inventory and obtain the unique identification information of the terminal from the wireless terminal, and combine the unique identification information of the local base station with the terminal. The unique identification information is bound and uploaded to the background server; the wireless terminal includes a micro-control circuit unit, a wireless transceiver circuit unit, a half-duplex transceiver power amplifier circuit, an antenna unit and a power amplifier power supply control circuit unit, the micro-control circuit unit, The wireless transceiver circuit unit, the half-duplex transceiver power amplifier circuit and the antenna unit are sequentially connected in communication, and the power amplifier enable output terminal (PAEN) of the micro-control circuit unit is electrically connected to the controlled terminal of the power amplifier power supply control circuit unit , the power supply output terminal (VPA) of the power amplifier power supply control circuit unit is electrically connected to the half-duplex transceiver power amplifier circuit and the power supply access terminal of the antenna unit;

The working method includes:

(1) The wireless terminal includes a sleep mode and an awakening mode;

The sleep mode includes the following steps:

S101. After it is determined to enter the sleep mode, the micro-control circuit unit and the wireless transceiver circuit unit enter an energy-saving working state, and at the same time, the micro-control circuit unit controls the power amplifier enable output terminal (PAEN) to output a first level signal, so that the power amplifier The power supply output terminal (VPA) of the power supply control circuit unit outputs a low-level voltage, and the half-duplex transceiver power amplifier circuit and the antenna unit are powered off and shut down;

The awakening mode includes the following steps:

S201. After it is determined to enter the wake-up mode, the micro-control circuit unit and the wireless transceiver circuit unit enter a normal working state, and at the same time, the micro-control circuit unit controls the power amplifier enable output (PAEN) to output a second level signal, so that the power amplifier The power supply output terminal (VPA) of the power supply control circuit unit outputs a high-level voltage, and the half-duplex transceiver power amplifier circuit and the antenna unit are powered on to work;

S202. The half-duplex transceiver power amplifier circuit and the antenna unit are controlled by the micro-control circuit unit to enter the simplex receiving state through the wireless transceiver circuit unit: if the terminal wake-up message from the base station is received on the wake-up channel on schedule, then step S203 is performed in sequence ~S205, otherwise it is determined to enter the sleep mode;

S203. Package the locally stored terminal unique identification information into a data upload message;

S204. The half-duplex transceiver power amplifier circuit and the antenna unit are controlled by the micro-control circuit unit to enter the simplex transmission state through the wireless transceiver circuit unit: send the data upload message to the base station through the channel competition mechanism on the data channel;

S205. The micro-control circuit unit controls the half-duplex transceiver power amplifier circuit and the antenna unit to enter the simplex receiving state through the wireless transceiver circuit unit: if the data upload confirmation corresponding to the data upload message is not received on the confirmation channel on schedule message, then it is determined that the transmission fails, and then returns to step S204 to resend the data upload message until the number of retransmissions of the data upload message reaches the maximum number of retransmissions, and finally determines to enter the sleep mode, otherwise it is determined that the transmission is successful, and directly determines to enter the sleep mode model;

(2) After wirelessly receiving the terminal inventory start message from the background server, the base station enters the terminal inventory mode: wirelessly sends the terminal wake-up message on the wake-up channel, and receives the data upload message from the wireless terminal through the listening data channel, and feeding back a data upload confirmation message corresponding to the data upload message to the wireless terminal on the confirmation channel, and finally binding the unique identification information of the local base station and the terminal unique identification information in the data upload message to the background server;

(3) After wirelessly receiving and binding and storing the unique identification information of the base station and the unique identification information of the terminal, the background server determines the current position of the individual plant corresponding to the unique identification information of the terminal according to the geographic location of the base station corresponding to the unique identification information of the base station.

2. a kind of working method for the individual wireless monitoring system of precious plant protection as claimed in claim 1, is characterized in that:

In the step S202, if the terminal wake-up message also includes terminal grouping indication information, the micro-control circuit unit determines the terminal grouping in which it is located according to the terminal grouping indication information;

In the step S204, the data uploading message is sent in the following manner: the data uploading message is sent to the base station through a channel contention mechanism on the data channel corresponding to the terminal grouping.

3. a kind of working method for the individual wireless monitoring system of precious plant protection as claimed in claim 2, is characterized in that:

If the terminal grouping indication information is the terminal grouping number, the micro-control circuit unit uses the terminal grouping number to perform a remainder calculation on the ID number in the local terminal unique identification information, and then determines the terminal group according to the remainder calculation result.

4. a kind of working method for the individual wireless monitoring system of precious plant protection as claimed in claim 2, is characterized in that:

After entering the terminal inventory mode, the base station also periodically counts the message packet loss rate of each data channel, and then obtains the estimated number of uploading terminals in each terminal group according to the mapping relationship between the message packet loss rate and the number of uploading terminals. Finally, before sending the terminal wake-up message or the data upload confirmation message, the group unique identifier of each terminal group and the estimated number of uploading terminals in the group are added to the to-be-sent terminal wake-up message or data upload confirmation message;

After the wireless terminal enters the simplex receiving state, if it receives a terminal wake-up message containing the group unique identifier of each terminal group and the estimated number of uploading terminals in the group, or a data upload confirmation message that does not correspond to the data upload message , the micro-control circuit unit determines the estimated number of uploading terminals in the terminal grouping group according to the group unique identifier, and then updates and sets the backoff time for sending the data upload message through the channel competition mechanism according to the estimated number.

5. a kind of working method for the individual wireless monitoring system of precious plant protection as claimed in claim 1, is characterized in that:

If the background server finds that the uncertain duration of the current position of a certain plant individual exceeds the preset duration, it will push an abnormal inventory warning message to the monitoring platform or the user terminal, wherein the abnormal inventory warning message contains the corresponding information of the individual plant. The unique identification information of the terminal and the basic information of the individual plant.

6. a kind of working method for the individual wireless monitoring system of precious plant protection as claimed in claim 1, is characterized in that:

The data upload confirmation message includes terminal unique identification information of multiple wireless terminals.

7. the working method of a kind of individual wireless monitoring system for precious plant protection as claimed in claim 1, is characterized in that, described wireless terminal also comprises the tamper-proof detection circuit unit that communicates with described micro-control circuit unit .

8. a kind of working method for the individual wireless monitoring system of precious plant protection as claimed in claim 7, is characterized in that, also comprises as follows:

After the micro-control circuit unit enters the normal working state, it also reads and stores the tamper detection result from the tamper detection circuit unit, and adds the locally stored tamper detection result to the data to be sent before sending the data upload message. uploading a message;

The base station also binds and uploads the terminal unique identification information and the tamper-proof detection result in the data upload message to the background server;

After wirelessly receiving the terminal unique identification information and the tamper-proof detection result uploaded by the binding, the background server determines the current terminal binding status of the individual plant corresponding to the terminal unique identification information according to the tamper-proof detection result. If the current terminal binding situation is violently disassembled, the abnormal inventory warning message is also pushed to the monitoring platform or the user terminal, wherein the abnormal inventory warning message also includes the current position corresponding to the individual plant.

9. The working method of an individual wireless monitoring system for precious plant protection as claimed in claim 1, wherein the individual wireless monitoring system further comprises a centralized manager and a repeater, wherein the The centralized manager and the repeater are half-duplex transceiver wireless devices respectively;

The background server may communicate with the base station through a wireless communication link formed by the centralized manager and a number of the repeaters.