JPH11266197A - Data communication method and temperature / humidity transmitter - Google Patents

Abstract

(57) [Problem] To provide a data communication method and a temperature / humidity transmission device capable of transmitting data without synchronization between transmitters and even when a transmission frequency is used in another wireless facility. SOLUTION: When transmitting data, a transmission frequency is monitored, and when not used (S18: No), transmission is performed at the transmission frequency (S26). Further, when the transmission frequency is used (S18: Yes), the frequency is switched (S22), and when the switched frequency is not used, transmission is performed at the frequency (S26). Further, when the transmission frequency and the switched frequency have been used for a predetermined time (S20: Yes), the transmission cycle is delayed by half the communication time (S24), and the transmission is performed (S2).
6). In other words, data is transmitted without synchronization between a plurality of transmitters by delaying transmission from another transmitter repeated every set period.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a data communication method for transmitting data and a temperature / humidity transmitting device for transmitting measured temperature / humidity to a receiving device connected to an air conditioner.

[0002]

2. Description of the Related Art Currently, buildings, factories, greenhouses for agriculture,
2. Description of the Related Art In an air conditioner such as a warehouse or a cultivation room for biotechnology, a temperature / humidity sensor is provided in a room to be adjusted in order to keep temperature and humidity at set values. Here, as the temperature / humidity sensor, there is a type of wirelessly transmitting temperature / humidity (wireless temperature / humidity transmitter). At present, when air conditioning a relatively large place such as an auditorium, a plurality of temperature and humidity transmitters are arranged at each place in the auditorium, and the measurement values sent from the plurality of temperature and humidity transmitters are integrated into a single unit. , And the air conditioner is controlled based on the data from the receiver, thereby realizing fine temperature and humidity control.

[0003]

The temperature / humidity transmitting device includes:
When transmitting data, monitor whether the transmission frequency is being used by another temperature / humidity transmission device or another wireless facility. If the frequency is being used, wait for transmission to end before transmitting. Had gone. For this reason, when transmission is not completed, temperature and humidity cannot be transmitted,
In some cases, the air conditioner could not perform appropriate temperature / humidity control.

In order to avoid interference when using a plurality of temperature and humidity transmitters, it is necessary to synchronize the temperature and humidity transmitters with each other. It is necessary to constantly monitor data transmitted from other temperature / humidity transmitters, that is, to constantly receive data. However, the temperature / humidity receiver measures the temperature and humidity with the built-in battery, and further transmits the measured value wirelessly, so that if the reception is continued for synchronization, the battery power is consumed, It becomes impossible to continue sending measured values without replacing the battery for a long time.

[0005] Claims 1 and 2 have been made to solve the above-mentioned problems, and an object of the present invention is to provide a data communication method capable of transmitting data even when a frequency is used in another wireless facility. And a temperature and humidity transmission device.

Claims 3 to 5 are made to solve the above-mentioned problem, and an object of the invention is to provide a method for transmitting data from a plurality of transmitters at predetermined intervals. Another object of the present invention is to provide a data communication method and a temperature / humidity transmission device capable of transmitting data without synchronization with the wireless communication system, even when the transmission frequency is used in another wireless facility.

A sixth aspect of the present invention has been made to solve the above-described problem, and an object of the present invention is to provide a temperature / humidity data capable of transmitting temperature / humidity data even when a frequency is used in another wireless facility. A transmission device is provided.

[0008]

According to a first aspect of the present invention, in a data communication method for transmitting data, a transmission frequency is monitored when transmitting data, and the transmission frequency is used. When the transmission frequency is not being used, transmission is performed at the transmission frequency, and when the transmission frequency is used, it is monitored whether a frequency different from the transmission frequency is used, and when the different frequency is not used, It is a technical feature that transmission is performed at the different frequency.

A second aspect of the present invention is a data communication method for transmitting data, characterized in that the same data is transmitted on a plurality of frequencies.

According to a third aspect of the present invention, there is provided a data communication method for transmitting data from a plurality of transmitters to one or more receivers at a predetermined cycle.
Monitors the transmission frequency, performs transmission at the transmission frequency when the transmission frequency is not used, and monitors whether a frequency different from the transmission frequency is used when the transmission frequency is used. Transmitting at the different frequency when the different frequency is not being used,
When the transmission frequency and a different frequency are used, the transmission is performed after a predetermined time delay from the preset cycle.

According to a fourth aspect of the present invention, there is provided a data communication method for transmitting data from a plurality of transmitters to one or more receivers at a predetermined cycle.
Monitoring a first transmission frequency, wherein when the first transmission frequency is not used by any of the plurality of transmitters,
Transmitting data at the first transmission frequency,
Monitoring a second transmission frequency, wherein when the second transmission frequency is not used by any of the plurality of transmitters,
Performing data transmission at the second transmission frequency, and performing transmission after delaying the preset period by a predetermined time when the first frequency and the second frequency are used;
This is a technical feature.

Further, the data communication method according to claim 5 is characterized in that, in claim 3 or 4, the predetermined time is half the data communication time.

According to a sixth aspect of the present invention, there is provided a temperature / humidity transmitting apparatus for connecting a measured temperature and humidity to an air conditioner for controlling temperature and humidity by using the data communication method according to any one of the first to fifth aspects. Technical feature of sending to

According to a first aspect of the present invention, a data communication method monitors a transmission frequency and performs transmission at the transmission frequency when the transmission frequency is not used. Also, when the transmission frequency is used, it is monitored whether a frequency different from the transmission frequency is used, and when the different frequency is not used, transmission is performed at the different frequency. Therefore, data can be transmitted even when the transmission frequency is being used by another wireless device or the like.

According to a second aspect of the present invention, the same data is transmitted on a plurality of frequencies. Therefore, data can be transmitted even when the transmission frequency is being used by another wireless device or the like.

According to a third aspect of the present invention, in the data communication method for transmitting data from a plurality of transmitters to one or more receivers at a predetermined cycle, the transmission frequency is monitored when transmitting the data. When the transmission frequency is not used, transmission is performed at the transmission frequency. Also, when the transmission frequency is used, it is monitored whether a frequency different from the transmission frequency is used, and when the different frequency is not used, transmission is performed at the different frequency. Further, when the transmission frequency and the different frequency are being used, that is, when the transmission frequency and the different frequency are different from other transmitters (any of the plurality of transmitters described above).
Also send when used in. Therefore, data transmission can be performed reliably. In this case, by performing transmission after delaying a predetermined period from a preset period at the time of transmission, transmission from another transmitter is delayed because the transmission time is delayed from the transmission time of another transmitter transmitted every set period. Without doing
That is, data transmission becomes possible without synchronization between a plurality of transmitters.

According to a fourth aspect of the present invention, there is provided a data communication method, wherein a first transmission frequency is monitored, and when the first transmission frequency is not used by any of a plurality of transmitters, the first transmission frequency is monitored. Send data. Subsequently, the second transmission frequency is monitored, and data is transmitted at the second transmission frequency when the second transmission frequency is not used by any of the plurality of transmitters. Then, when the first frequency and the second frequency are used, that is, when the first frequency and the second frequency are used by another transmitter (any of the plurality of transmitters described above) Also send. Therefore, data transmission can be reliably performed. In this case, by performing transmission after delaying a predetermined period from a preset period at the time of transmission, transmission from another transmitter is delayed because the transmission time is delayed from the transmission time of another transmitter transmitted every set period. Data transmission without synchronization, that is, without synchronization between a plurality of transmitters.

According to the data communication method of the present invention, since the predetermined time is half of the data communication time, the transmission time is delayed up to twice so that the transmission of another transmitter is not interrupted. can do.

According to a sixth aspect of the present invention, there is provided a temperature and humidity transmitting apparatus for measuring a measured temperature and humidity by the data communication method according to the first to fifth aspects.
Since the signal is transmitted to the receiving device connected to the air conditioner that controls the temperature and the humidity, communication can be performed without being affected by other wireless devices. In particular, when the data communication method of claims 3 to 5 is used, no synchronization is required, and it is not necessary to constantly monitor transmission from other temperature / humidity transmission devices. Will be possible.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A temperature and humidity receiver according to an embodiment of the present invention will be described below with reference to the drawings. FIG.
1 shows a configuration example of a temperature / humidity receiver and a temperature / humidity transmitter using a data communication method according to a first embodiment of the present invention. The plurality of temperature / humidity transmitters CH-0 to CH-15 detect the temperature and humidity in the room, respectively, and transmit the temperature / humidity detected wirelessly to one temperature / humidity receiver. The temperature / humidity receiver sends the temperature / humidity data sent from the transmitter to an air conditioner (not shown), and keeps the indoor temperature and humidity at the set values by the air conditioner.

FIG. 2A is a block diagram showing the configuration of the temperature and humidity transmitter. The temperature and humidity receiver 10 includes a temperature detection circuit 12 that measures temperature using a temperature sensor 11 and a humidity detection circuit 16 that measures humidity using a humidity sensor 14.
A display circuit 18 for displaying the temperature and humidity detected by the temperature detection circuit 12 and the humidity detection circuit 16 on a liquid crystal screen (not shown), a power supply circuit 30 for adjusting a voltage from a power supply (dry cell), and one And a wireless communication circuit 34 for transmitting measurement data from the control circuit 20 side. The wireless communication circuit 34 includes a frequency setting unit 34B for setting any one of transmission frequencies F1, F2, and F3, a transmission unit 34C for transmitting data at the set frequency, and a reception unit 34A for receiving the set frequency. Consists of

FIG. 2B is a block diagram showing the configuration of the temperature / humidity receiver 50. The temperature / humidity receiver 50 displays a wireless communication circuit 54 for receiving data sent from the temperature / humidity transmitter 10 and the temperature and humidity sent from the temperature / humidity transmitter 10 on a liquid crystal screen (not shown). A display circuit 58;
Power supply circuit 70 for supplying electric power, air conditioner (not shown)
It comprises an output circuit 72 for outputting temperature and humidity values to the side, and a control circuit 60 composed of one microcomputer and performing various control operations. The control circuit 60
When the temperature / humidity data is not transmitted from the temperature / humidity transmitting device 10 side, the temperature / humidity data previously transmitted or the temperature / humidity data measured by the temperature / humidity receiver 50 side are used as replacement data for the air conditioner side. Output to The wireless communication circuit 54 includes a frequency setting unit 54B for setting a frequency,
The receiving unit 54A receives data at the set frequency.

Next, the operation of the temperature and humidity transmitting apparatus 10 according to the first embodiment will be described with reference to FIG. First, the control circuit 20 of the temperature / humidity transmission device 10 transmits the transmission cycle P (for example, every 10 seconds).
Is determined (S12). Here, when the transmission cycle is reached (Yes in S12), the temperature and humidity are measured by the temperature sensor 11 and the humidity sensor 14 (S14), and measurement data of temperature and humidity is created based on the measured temperature and humidity (S16). ).

Thereafter, the control circuit 20 determines whether the first transmission frequency F1 is being used by another temperature / humidity transmission device (see FIG. 1) or another wireless facility (here, including a so-called illegal radio, etc.). , The transmission frequency F at the receiving unit 34A.
It is determined whether or not one carrier (frequency component) can be received (S18). Here, when there is no carrier of the transmission frequency F1 and the frequency is not used (No in S18), the process proceeds to step 26, and the measurement data is transmitted at the transmission frequency F1. This measurement data
The temperature / humidity transmitter includes an ID for identifying each other, and temperature / humidity data.

On the other hand, when the transmission frequency F1 is being used (S18: Yes), it is determined whether or not it has the identification ID of another temperature / humidity transmission device (S20).
The frequency is changed from the first transmission frequency F1 to the second transmission frequency F
Switch to 2. Then, returning to step 18, it is determined whether or not the second transmission frequency F2 is used. When the second transmission frequency F2 is not used (S18 is N)
o), data transmission is performed at the second transmission frequency F2 (S26), and when the second transmission frequency F2 is also used (S18: Yes), the transmission frequency is switched to the third transmission frequency F3 (S22). When transmission can be performed at the third transmission frequency (18 is No), the third transmission frequency
Data transmission is performed at the transmission frequency F3 (S26).

The switching of the frequency by the temperature / humidity transmitter 10 and the transmission by the third transmission frequency F3 are shown in FIG.
Shown in FIG. 8A shows the case where the measurement data (transmission time t) is transmitted at the third transmission frequency F3 because the first transmission frequency F1 and the second transmission frequency F2 are being used after the transmission period P has elapsed. Is shown.

On the other hand, if the determination in step 20 as to whether the received signal has the above-mentioned identification ID of the other temperature / humidity transmitter is “Yes”, in step 24 the transmission cycle P
Is shifted by half the transmission time (communication time) t, and then the measurement data is transmitted (S26). Here, in step 24, the transmission period P is delayed by half of the transmission time t because the other temperature / humidity transmission devices using the first, second, and third transmission frequencies F1, F2, and F3 described above. This is to delay from the transmission timing. In other words, by shifting t / 2 minutes at most two times, the transmission timing is delayed by the transmission time (communication time) t minutes, so that interference with transmission radio waves of other temperature and humidity transmission devices is prevented.

FIG. 8C shows frequency switching when the transmission cycle is delayed. In the figure, a third transmission frequency transmitted by another temperature / humidity transmitting device is denoted by O, and a third transmission frequency transmitted by the temperature / humidity transmitting device is denoted by I. As described above, the transmission timing is delayed by t / 2 times by t / 2, so that the transmission radio wave (the third transmission frequency O) of another temperature / humidity transmission device is not interfered.

Next, the processing on the temperature / humidity receiving apparatus 50 side will be described with reference to FIG. 4 showing a flowchart of the processing. First, the control circuit 60 of the temperature and humidity receiving device 50
It is determined whether there is a carrier at the first transmission frequency F1 (S
30). In the temperature / humidity transmission device described above, the carrier means a frequency component. Here, the carrier means an ID for identifying measurement data sent from the temperature / humidity transmission device. It is determined whether measurement data has been sent from the device. That is, it is determined that there is no carrier even if the transmission frequency F1 is used in another wireless facility. Here, when transmission data is not transmitted at the first transmission frequency F1 from any of the temperature and humidity transmission devices (S3
0 is No), the reception frequency is changed from the first transmission frequency F1 to the second
Switching to the transmission frequency F2 (S32), the process returns to step 30, and it is determined whether the measurement data is being transmitted at the second transmission frequency F2. Then, the second transmission frequency F2
When the transmission data is not sent at (S30 is N
o), the reception frequency is switched from the second transmission frequency F2 to the third transmission frequency F3 (S32), and the process returns to step S30.
That is, it waits for transmission of the measurement data from the temperature and humidity transmission device while switching the reception frequency. FIG. 8B shows the switching of the reception frequency by the temperature / humidity reception device 50.

Here, as described above, the temperature / humidity transmitting device 1
When the measurement data is transmitted from the 0 side at the third transmission frequency, it is determined that there is a carrier at the third transmission frequency (Yes in S30), and the data transmitted as shown in FIG. It receives (S34). Then, it is determined whether or not the data was properly received (S36). If the data was not properly received (S36: No), step 30 is executed.
When the data has been properly received (S3
6 is Yes), and outputs the temperature and humidity values to the air conditioner based on the received measurement data (S38). When the temperature / humidity receiving device 50 cannot receive the measurement data for each transmission cycle P from the temperature / humidity transmitting device side, as described above, the previous measurement value or the like is used as replacement data for the air conditioning device side as described above. Output.

In the temperature / humidity transmission apparatus using the data communication method of the first embodiment, even if the transmission frequency is used in another wireless facility or the like, the measurement data can be transmitted by using another transmission frequency. it can. In particular, when conflicting with the transmission of another temperature / humidity transmitting device, by delaying the transmission cycle, it is possible to transmit the measurement data without interference with the other temperature / humidity transmitting device. That is, the transmission of the other temperature / humidity transmitting apparatus is always received, and the data can be transmitted without synchronization with the other temperature / humidity transmitting apparatus.

Next, a temperature / humidity transmitting device and a temperature / humidity receiving device using the data communication method according to the second embodiment of the present invention will be described. The mechanical configuration of the temperature / humidity transmitting device and the temperature / humidity receiving device of the second embodiment is the same as that of the first embodiment described above with reference to FIGS. 2A and 2B. Is omitted.

Here, the processing by the temperature and humidity transmitting apparatus of the second embodiment will be described with reference to the flowchart of FIG. The control circuit 20 determines whether the transmission period P (for example, every 10 seconds) has been reached (S52). Here, when the transmission period is reached (Yes in S52), the temperature and humidity are measured by the temperature sensor 11 and the humidity sensor 14 (S54),
Based on the measured temperature and humidity, measurement data of the temperature and humidity is created (S56).

Thereafter, the control circuit 20 determines whether the first transmission frequency F1 is being used by another temperature / humidity transmission device (see FIG. 1) at the receiving section 34A.
It is determined whether or not one carrier (identification ID) can be received (S58). Here, the first transmission frequency F1
If there is no ID that uses, and the frequency is not used by another temperature / humidity transmission device (No in S58), the process proceeds to step 60, and the measurement data is transmitted at the first transmission frequency F1 over the transmission time t. Then, the process proceeds to step 64 after the determination in step 62.

On the other hand, when the first transmission frequency F1 is used (S58: Yes), the process waits for the transmission time t (S62: Yes), and proceeds to step 64.

In step 64, the second transmission frequency F2
Is used by another temperature / humidity transmitting device. Here, when the second frequency F2 is not used by another temperature / humidity transmitter (S64: No), the process proceeds to step 66, and the measurement data is transmitted at the second transmission frequency F2 over the transmission time t. Then, the process proceeds to step 70 after the determination in step 68. On the other hand, when the second transmission frequency F2 is being used (S64: Yes), the process waits for the transmission time t (S68: Yes), and proceeds to step 70.

In step 70, the third transmission frequency F3
Is used by another temperature / humidity transmitting device. Here, when the third frequency F3 is not used by another temperature / humidity transmission device (S70: No), the process proceeds to step 72, and the measurement data is transmitted at the third transmission frequency F3 over the transmission time t. Then, after the determination in step 72, the process proceeds to step 76. On the other hand, when the third transmission frequency F3 is being used (Yes in S70), the process waits for the transmission time t (Yes in S74), proceeds to step 76, passes the determination of step 76 described later, It is determined whether the transmission data has been transmitted once (here, 16 times: that is, the maximum number of temperature and humidity transmitters that can be installed). Here, until the measurement data is transmitted N times (S78 is N
o) Return to step 58 and repeat the transmission of the measurement data.

The transmission at the first, second, and third transmission frequencies will be further described with reference to FIG. In the figure, the transmission process for switching the transmission frequency is started after the transmission period P has elapsed, but the first transmission frequency F1 and the second transmission frequency F2 are used by another temperature and humidity transmission device, and the third transmission frequency The transmission frequency switching when the measurement data is transmitted only with the transmission frequency is shown. Here, although not shown, when the first transmission frequency F1 and the second transmission frequency F2 are not used, the measurement data are respectively transmitted at the first transmission frequency F1, the second transmission frequency F2, and the third transmission frequency F3. Is transmitted 16 times. In addition, this temperature and humidity transmission device switches the transmission frequency in the order of the first transmission frequency F1 → the second transmission frequency F2 → the third transmission frequency F3, but the other temperature and humidity transmission devices switch in various orders, for example, First transmission frequency F1 → third transmission frequency F3 → second transmission frequency F
Switch with 2. Here, the transmission frequency is switched regularly, but it is also possible to switch the transmission frequency at random. Further, the first transmission frequency F1 → the second transmission frequency F2 → the third transmission Frequency F3
It is also possible to switch in the order of.

In step 76 shown in FIG. 5, it is determined whether all of the first transmission frequency F1, the second transmission frequency F2, and the third transmission frequency F3 have been used in another temperature / humidity transmission device. Here, the first transmission frequency F1 and the second transmission frequency F
If the second and third transmission frequencies F3 are all used by another temperature and humidity transmission device (Yes in S76), step 80 is executed.
The transmission period P is set to the communication time 48t (here, the transmission time t for transmitting the measurement data once, and it takes 3t for each transmission at the first, second, and third transmission frequencies. Therefore, the communication time is delayed by 24t, which is half of the transmission time (48 times the transmission time t).
FIG. 9 shows the switching of the frequency when the time is delayed by 24t.
It is shown in (C). That is, similar to the first embodiment described above with reference to FIG.
The transmission is performed with a delay from the transmission timing of another temperature / humidity transmission device using the third transmission frequencies F1, F2, F3. In other words, by shifting the time of 24t by at most two times, the transmission timing is delayed by 48t (one communication time), and no interference occurs with the transmission radio waves of the other temperature and humidity transmission devices. In this example, the transmission cycle is delayed when the first transmission frequency F1, the second transmission frequency F2, and the third transmission frequency F3 are all used by another temperature and humidity transmission device. F
When any one of the first, second transmission frequency F2, and third transmission frequency F3 is used by another temperature and humidity transmission device, the transmission cycle can be delayed.

Next, the temperature / humidity receiving device 50 of the second embodiment
The processing on the side will be described with reference to FIG. 6 showing a flowchart of the processing. First, the control circuit 60 of the temperature / humidity receiving device 50 determines whether a predetermined time T (for example, 1.5 times the communication time 48t described above) has elapsed (S82).
Here, until the fixed time T has elapsed (No in S82),
For example, it receives transmission data at the first transmission frequency F1, that is, waits for data transmission (S86). Then, it is determined whether the data has been received (S88). When the data has been received (S88), the temperature and humidity values are output to the air conditioner based on the received measurement data (S90).

When the predetermined time T elapses (S
82 is Yes), the reception frequency is switched from the first transmission frequency F1 to the second transmission frequency F2 (S84), and step 8 is performed.
After the determination of No. 2 (No in S82), the process proceeds to step 86, and waits for data transmission at the second transmission frequency F2 (S86). When the predetermined time T further elapses (Yes in S82), the reception frequency is changed to the second transmission frequency F2.
Is switched to the third transmission frequency F3 (S84), and after the determination in step 82 (S82 is No), the process proceeds to step 86 and waits for data transmission at the third transmission frequency F3 (S86). That is, as shown in FIG. 9B, the reception of the measurement data from the temperature / humidity transmission device is waited while repeating the switching of the reception frequency in the period T.

In the temperature / humidity transmission apparatus using the data communication method of the second embodiment, even if the transmission frequency is used in another wireless facility or the like, the measurement data can be transmitted by using another transmission frequency. it can. In particular, when conflicting with the transmission of another temperature / humidity transmitting device, by delaying the transmission cycle, measurement data can be transmitted without interference with the other temperature / humidity transmitting device. That is, the transmission of the other temperature / humidity transmitting apparatus is always received, and the data can be transmitted without synchronization with the other temperature / humidity transmitting apparatus. In the second embodiment,
Before transmitting, it was confirmed by the identification ID whether or not there was a transmission from another temperature / humidity transmitting device. It is also possible to determine the presence or absence of transmission from the facility.

FIG. 7 shows processing according to a modified example in which the processing by the temperature and humidity transmitting apparatus of the second embodiment described above with reference to FIG. 5 is simplified, and FIG. 10A shows the processing according to the modified example. 9 illustrates switching of a transmission frequency by a temperature and humidity transmission device. As shown in FIG. 7, in the modification example, the determination in steps 58, 64, and 70 is performed without confirming the identification ID from the other temperature / humidity transmitting device performed in the process shown in FIG. Instead, as shown in FIG. 10A, the measurement data is transmitted at the first transmission frequency F1, the second transmission frequency F2, and the third transmission frequency F3. Even in the configuration of this modified example, FIG.
As shown in FIG. 0 (B), data can be received by the same processing as the temperature and humidity receiving apparatus described above with reference to FIG.

Next, a temperature / humidity transmitting device and a temperature / humidity receiving device using the data communication method according to the third embodiment of the present invention will be described. In the data communication method according to the third embodiment, the temperature / humidity transmission device 10 performs the transmission process of the first embodiment described above with reference to FIG. The above-described process of switching the reception frequency at a certain time T is performed. That is, the configuration of the third embodiment is a combination of the transmission scheme of the first embodiment and the reception scheme of the second embodiment.

FIG. 11A shows switching of the transmission frequency by the temperature / humidity transmitting device 10 of the third embodiment, and FIG.
It is shown in (B). Here, the temperature / humidity reception device 50 switches the reception frequency for each reception time T. On the other hand, when transmitting the measurement data, the temperature / humidity transmission device 10 sets the transmission of the measurement data (one transmission time t) to the reception switching time T.
It repeats for 4T which is 4 times. As a result, it becomes possible to receive the measurement data on the temperature and humidity receiving device 50 side.

In the above-described embodiment, an example has been given in which the data communication method of the present invention is applied to a temperature / humidity transmitting device. The present invention is applicable to various types of data communication in which control can be continued even if data is lost.

[0047]

According to the data communication method of the present invention, when a transmission frequency is used, transmission is performed at a frequency different from the transmission frequency. Therefore, even if the transmission frequency is used by another radio device or the like. , Can send data.

According to the data communication method of claim 2, since the same data is transmitted at a plurality of frequencies, the data can be transmitted even if the transmission frequency is being used by another radio device or the like.

According to the data communication method of the present invention, when a transmission frequency is used, transmission is performed at a frequency different from the transmission frequency. Can be sent. Furthermore, since the transmission is performed even when the transmission frequency and a different frequency are used, data can be transmitted reliably. Here, since transmission is performed after a predetermined time delay from a preset cycle at the time of transmission, communication can be performed without disturbing transmission of other transmitters, and synchronization between a plurality of transmitters can be achieved. Data transmission without the need.

According to a fourth aspect of the present invention, there is provided a data communication method comprising:
Since the same data is transmitted at the frequency, the data can be transmitted even if the transmission frequency is used by another wireless device or the like. Since the transmission is performed even when the first frequency and the second frequency are used, data can be transmitted reliably. Here, since transmission is performed after a predetermined time delay from a preset cycle at the time of transmission, communication can be performed without disturbing transmission of other transmitters, and synchronization between a plurality of transmitters can be achieved. Data transmission without the need.

According to the data communication method of the present invention, since the communication is delayed by a half of the communication time, the transmission time is delayed up to two times so that the communication can be performed without obstructing the transmission of another transmitter. Can be.

The temperature and humidity transmitting apparatus according to the sixth aspect can transmit temperature and humidity without being affected by other wireless devices.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a temperature and humidity transmitter and a temperature and humidity receiver according to a first embodiment of the present invention.

FIG. 2A is a block diagram of a temperature / humidity transmitter, and FIG. 2B is a block diagram of a temperature / humidity receiver.

FIG. 3 is a flowchart illustrating a process on the temperature / humidity transmitter side according to the first embodiment.

FIG. 4 is a flowchart showing a process on the temperature / humidity receiver side according to the first embodiment.

FIG. 5 is a flowchart showing processing on the temperature / humidity transmitter side according to the second embodiment.

FIG. 6 is a flowchart illustrating a process on the temperature and humidity receiver side according to the second embodiment.

FIG. 7 is a flowchart showing processing on the temperature / humidity transmitter side according to a modification of the second embodiment.

8 (A) and 8 (C) are explanatory diagrams showing switching of the transmission frequency on the temperature / humidity transmitter side of the first embodiment, and FIG. 8 (B) is a first embodiment. FIG. 7 is an explanatory diagram showing switching of a reception frequency on the temperature and humidity receiver side of the embodiment.

9 (A) and 9 (C) are explanatory diagrams showing switching of the transmission frequency on the temperature / humidity transmitter side of the second embodiment, and FIG. 9 (B) is a second embodiment. FIG. 7 is an explanatory diagram showing switching of a reception frequency on the temperature and humidity receiver side of the embodiment.

FIG. 10A is an explanatory diagram showing switching of a transmission frequency on the temperature / humidity transmitter side in a modification of the second embodiment, and FIG. 10B is a modification of the second embodiment; It is explanatory drawing which shows the switching of the reception frequency in the example temperature-humidity receiver side.

FIG. 11A is an explanatory view showing switching of a transmission frequency on the temperature / humidity transmitter side according to the third embodiment, and FIG. 11B is a temperature / humidity receiver according to the third embodiment; FIG. 7 is an explanatory diagram showing switching of a reception frequency on the side.

[Explanation of symbols]

 Reference Signs List 10 temperature / humidity transmitter (transmitter) 11 temperature sensor 14 humidity sensor 20 control circuit 34 wireless communication circuit 50 temperature / humidity receiver (receiver) 54 wireless communication circuit 60 control circuit

Claims (6)

[Claims] In a data communication method for transmitting data, a transmission frequency is monitored when transmitting data, and when the transmission frequency is not used, transmission is performed at the transmission frequency. A data communication method comprising: monitoring whether a frequency different from the transmission frequency is being used when being used; and transmitting at the different frequency when the different frequency is not used. 2. A data communication method for transmitting data, wherein the same data is transmitted on a plurality of frequencies. 3. A data communication method in which data is transmitted from a plurality of transmitters to one or more receivers at a preset cycle, when transmitting data, a transmission frequency is monitored, and the transmission frequency is used. When the transmission frequency is not used, transmission is performed at the transmission frequency.When the transmission frequency is used, it is monitored whether a frequency different from the transmission frequency is used. A data communication method, wherein transmission is performed at the different frequency, and when the transmission frequency and the different frequency are used, transmission is performed after a predetermined time delay from the preset cycle. 4. A data communication method for transmitting data from a plurality of transmitters to one or more receivers at a predetermined cycle, wherein when transmitting data, a first transmission frequency is monitored. When the transmission frequency is not used for any of the plurality of transmitters, data transmission is performed at the first transmission frequency, and subsequently, the second transmission frequency is monitored. When not being used by any of the plurality of transmitters, perform data transmission at the second transmission frequency, and when the first frequency and the second frequency are being used, the preset A data communication method, wherein the transmission is performed after a predetermined time delay from the cycle. 5. The predetermined time is one of data communication time.
5. The data communication method according to claim 3, wherein the data communication method is / 2. 6. A temperature / humidity data transmission method comprising: transmitting a measured temperature and humidity to a receiving device connected to an air conditioner for controlling temperature and humidity by using the data communication method according to claim 1; Transmission device.