CN201218741Y - Wireless data collector for humiture of tobacco flue-curing house - Google Patents

Abstract

The utility model provides a temperature and humidity wireless data acquisition device for a flue-cured tobacco room, which includes a signal acquisition and processing unit and a signal receiving and processing unit, wherein the signal receiving and processing unit placed in a monitoring station is composed of a host with a display and a wireless communication module connected to the host , The signal acquisition and processing unit placed in the flue-cured tobacco room is composed of a temperature sensor, a humidity sensor and a wireless communication module. The temperature and humidity values during the tobacco leaf baking process in the flue-curing room can be collected, processed and converted into digital signals in real time, and then sent to the signal receiving and processing unit through the nRF9E5 wireless communication module, and then sent to the host, and dynamically displayed to realize Timely monitoring of the baking environment in each flue-curing room. The utility model has the characteristics of accurate and timely data collection, high work efficiency, perfect management function and low labor intensity.

Description

Wireless data acquisition device for temperature and humidity in flue-cured tobacco room

technical field

The utility model relates to a temperature and humidity wireless data acquisition device, in particular to a device for collecting the curing temperature and humidity of tobacco leaves in a tobacco curing room through wireless communication technology, which belongs to the technical field of tobacco processing.

Background technique

The temperature of the traditional rural tobacco flue-cured room is mostly estimated and controlled roughly by manual experience, and the humidity is hardly considered. The quality of the tobacco leaves baked in this way is not stable, and the grades are quite different, which directly affects the sales price of the tobacco leaves, and finally affects the economic income of the tobacco farmers. In addition, the following disadvantages still exist: 1. The ineffective loss of fuel is serious; 2. The flue-cured tobacco process lasts for a long time, and the labor input is relatively large. At present, the initial curing process of flue-cured tobacco production in my country is still scattered in the soil curing houses of tobacco farmers. These soil curing houses not only have large differences in construction, but also the layout of each curing house is extremely irregular. Therefore, centralized monitoring and control is required. The current status quo is unattainable. Therefore, it is absolutely necessary to improve the prior art.

Only independent monitoring can be carried out on each independent barn in each village, which will cost incalculable manpower and material resources, and if a monitoring center is to be set up in each natural village, the data acquisition system will have to monitor the temperature in each barn. , Humidity monitoring. Through wireless data transmission technology can

Contents of the invention

The purpose of this utility model is to provide a temperature and humidity wireless data acquisition device for flue-cured tobacco rooms, which can collect and monitor the temperature and humidity in each flue-cured tobacco room in real time, facilitate centralized monitoring and control, ensure the quality of flue-cured tobacco, and reduce the cost of flue-cured tobacco.

The utility model is completed through the following technical solutions: a temperature and humidity wireless data acquisition device for flue-cured tobacco room, including a signal acquisition and processing unit and a signal receiving and processing unit, wherein the signal receiving and processing unit placed in the monitoring station is connected to the host by a host with a display Composed of wireless communication modules, the signal acquisition and processing unit placed in the flue-cured tobacco room is composed of temperature sensors, humidity sensors, and wireless communication modules.

In the signal receiving and processing unit, the receiving antenna is composed of an inductance-capacitance oscillation circuit formed by LC. This circuit is composed of C16, C15, L2, C13, C14, C12, L1, L3, and C3, and is connected to pins 20 and 21 of the single-chip microcomputer U1. The pins 5, 16, 18, 22, and 24 of U1 are connected to the ground, pins 4, 17, and 25 are connected to the positive pole of the power supply, pin 19 is connected to the ground through capacitors C4 and C3, and pin 23 is connected to the ground through the resistor R2. Connected to the ground, 25 pins are connected to the positive pole of the power supply, and then connected to the ground through capacitors C5 and C6. Pins 12 and 13 are respectively connected to pins 18, 17, 16, 15, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, and 1 of the serial port RS-232 communication connector J1, U1 The 30th pin of the communication connector J1 is connected to the 19th pin of the communication connector J1 through the resistor R3, the 31st pin is connected to the ground through the capacitor C7, the 4th pin is connected to the positive pole of the power supply and then connected to the ground through the capacitor C8, and the 14th and 15th pins are connected to the crystal oscillator circuit. The oscillating circuit is composed of crystal oscillator X1, resistor R1, capacitors C1 and C2, which are used to provide the pulse signal for the operation of the microcontroller U1. The 7th pin of U1 is connected to the positive pole of the power supply through the resistor R6 and the light-emitting diode D2, and the 8th pin is connected to the positive pole of the power supply through the resistor R5 and the light-emitting diode. D1 is connected to the positive pole of the power supply, pins 1, 2, 5, and 6 of the integrated circuit U2 are respectively connected to pins 1, 3, 4, and 2 of the communication connector J1, pin 3 of U2 is connected to the ground through a resistor R5, and pin 7 is connected to the ground through a resistor R4 is connected to the positive pole of the power supply, pin 2 is connected to the positive pole of the power supply and then connected to the ground, pin 4 is connected to the ground, pins 13 and 20 of the communication connector J1 are connected to the ground, pin 14 is connected to the positive pole of the power supply, and the communication connector J1 is connected to the host PC RS-232 interface.

The output ends of the temperature sensor D2 and the humidity sensor D3 of the signal acquisition and processing unit are connected to the 18 pins and 17 pins of the communication connector J1 in the wireless communication module respectively for collecting signals, and the collected signals are sent to the single-chip microcomputer After processing by U1, the data is sent wirelessly through the antenna.

Compared with other prior art, the utility model has the following advantages:

1. Accurate, timely data collection and high work efficiency: the wireless communication technology is used to collect and process the temperature and humidity data in the flue-cured tobacco room, and the temperature and humidity data of multiple curing rooms can be recorded at the same time, and the database can be directly generated, which greatly reduces the It shortens the working time of baking personnel and effectively prevents inaccurate data caused by manual observation.

2. The wireless communication module nRF9E5 works on three different channels, and is connected to the host computer through a serial peripheral interface. You only need to send the sent data and receiver address to nRF9E5, and then the data can be packaged and sent automatically, and then processed by the host computer. data. signal acquisition and processing unit and

3. Perfect management function: the data management is completed through the host in the signal receiving and processing unit, and all historical data are archived, and the historical data of each flue-cured room can be easily queried.

Description of drawings

Fig. 1 is a functional block diagram of the circuit structure of the present utility model;

Fig. 2 is a wireless transceiver module and a computer interface circuit diagram;

Figure 3 is a circuit diagram of the data acquisition terminal.

Detailed ways

The utility model provides a temperature and humidity wireless data acquisition device for a flue-cured tobacco room, including a signal acquisition and processing unit 2 and a signal receiving and processing unit 1, wherein the signal receiving and processing unit 1 placed in a monitoring station is composed of a host PC with a display, and a wireless communication device connected to the host PC. Composed of a communication module nRF9E5, the signal acquisition and processing unit 2 placed in the flue-cured room is composed of a temperature sensor 21, a humidity sensor 22, and a wireless communication module nRF9E5, as shown in Figure 1.

The nRF9E5 communication module is a commercially available wireless single-chip microcomputer chip, wherein the receiving antenna forms an inductance-capacitance oscillation circuit through LC, and this circuit is composed of C16, C15, L2, C13, C14, C12, L1, L3, C3, and is connected with the single-chip microcomputer Pins 20 and 21 of U1 are connected, pins 5, 16, 18, 22, and 24 of U1 are connected to the ground, pins 4, 17, and 25 are connected to the positive pole of the power supply, and pins 19 are connected to the ground through capacitors C4 and C3. Pin 23 is connected to the ground through resistor R2, pin 25 is connected to the positive pole of the power supply, and then connected to the ground through capacitors C5 and C6. 26, 27, 28, 29, 32, 1, 2, 3, 6, 7, 8, Pins 9, 10, 11, 12, and 13 are respectively connected to pins 18, 17, 16, 15, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, and 2 of the serial port RS-232 communication connector J1 1 pin is connected, the 30 pin of U1 is connected to the 19 pin of the communication connector J1 through the resistor R3, the 31 pin is connected to the ground through the capacitor C7, the 4 pin is connected to the positive pole of the power supply and then connected to the ground through the capacitor C8, and the 14 and 15 pins are connected to the ground. The crystal oscillating circuit is connected. The oscillating circuit is composed of crystal oscillator X1, resistor R1, and capacitors C1 and C2. It is used to provide the pulse signal for the operation of the single-chip microcomputer U1. Pin 7 of U1 is connected to the positive pole of the power supply through resistor R6 and light-emitting diode D2. Pin 8 The resistor R5 and the light-emitting diode D1 are connected to the positive pole of the power supply, the pins 1, 2, 5, and 6 of the integrated circuit U2 are respectively connected to the pins 1, 3, 4, and 2 of the communication connector J1, and the pin 3 of U2 is connected to the ground via the resistor R5. Connected, pin 7 is connected to the positive pole of the power supply through resistor R4, pin 2 is connected to the positive pole of the power supply and then connected to the ground, pin 4 is connected to the ground, pins 13 and 20 of the communication connector J1 are connected to the ground, pin 14 is connected to the positive pole of the power supply, communication Connector J1 is connected to the RS-232 interface of the host PC, as shown in Figure 2.

The output ends of the temperature sensor D2 and the humidity sensor D3 of the signal acquisition and processing unit are connected to the 18 pins and 17 pins of the communication connector J1 in the wireless communication module nRF9E5 respectively, for collecting signals, and sending the collected signals to After processing by the single-chip microcomputer U1, the wireless transmission of data is completed through the antenna, as shown in Figure 3. The specific circuit structure of the wireless communication module nRF9E5 is shown in the figure

Its working principle is: the temperature and humidity sensors detect the real-time temperature and humidity values in the flue-cured tobacco room during the tobacco leaf curing process, convert the physical quantities collected by the sensor into digital signals through the signal acquisition and processing unit, and then send the data through the nRF9E5 wireless communication module To the signal receiving and processing unit, the signal receiving and processing unit receives the data sent by the signal acquisition and processing unit, and transmits it to the host computer, and the data acquisition system software will dynamically display the collected data to realize timely monitoring of the baking environment in each tobacco curing room .

Claims (3)

1, a kind of tobacco flue-curing house humiture data acquisition device, comprise signal acquisition process unit and signal processing unit, wherein place the main frame of the signal processing unit of monitoring station by the band display, the wireless communication module that links to each other with main frame constitutes, and places signals collecting, processing unit in the tobacco flue-curing house to be made of temperature sensor, humidity sensor, wireless communication module.

2, tobacco flue-curing house humiture data acquisition device according to claim 1, it is characterized in that in the described signal processing unit, the inductance capacitance oscillatory circuit that receiving antenna is formed through LC, this circuit is by C16, C15, L2, C13, C14, C12, L1, L3, C3 constitutes, and with 20 of single-chip microcomputer U1,21 pin are connected, 5 of U1,16,18,22,24 pin all are connected with ground, 4,17,25 all link to each other with positive source, 19 pin are respectively through capacitor C 4, C3 links to each other with ground, 23 pin link to each other with ground through resistance R 2,25 pin link to each other with positive source after capacitor C 5, C6 links to each other with ground, 26 of single-chip microcomputer U1,27,28,29,32,1,2,3,6,7,8,9,10,11,12,13 pin respectively with 18 of serial ports RS-232 communication connector J1,17,16,15,12,11,10,9,8,7,6,5,4,3,2,1 pin links to each other, 30 pin of U1 link to each other through 19 pin of resistance R 3 with communication connector J1,31 foot meridian capacitor C7 link to each other with ground, 4 pin link to each other with positive source after capacitor C 8 links to each other with ground, 14,15 pin link to each other with crystal oscillating circuit, this oscillatory circuit is by crystal oscillator X1, resistance R 1, capacitor C 1, C2 constitutes, be used to offer the pulse signal of single-chip microcomputer U1 work, 7 pin of U1 are through resistance R 6, light emitting diode D2 links to each other with positive source, 8 pin are through resistance R 5, light emitting diode D1 links to each other with positive source, 1 of integrated circuit U2,2,5,6 pin respectively with 1 of communication connector J1,3,4,2 pin link to each other, 3 pin of U2 link to each other with ground through resistance R 5,7 pin link to each other with positive source through resistance R 4, after linking to each other with positive source, 2 pin link to each other with ground, 4 pin link to each other with ground, 13 of communication connector J1,20 pin link to each other with ground, 14 pin link to each other with positive source, and communication connector J1 connects the RS-232 interface of host PC.

3, tobacco flue-curing house humiture data acquisition device according to claim 1 is characterized in that the output terminal of temperature sensor D2, the humidity sensor D3 of described signals collecting, processing unit links to each other with 18 pin, 17 pin of communication connector J1 in the wireless communication module respectively.

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