JP2020108010A - Wireless relay program and wireless relay - Google Patents

Abstract

To realize relay and reduce interference without being affected by status of public infrastructure in a monitoring system that monitors status of a distant device.SOLUTION: A receiving unit 32 of a communication board 10 provided in a repeater 3 receives a radio wave of communication data through a predetermined reception channel. Reception processing means 40 determines whether the communication data is addressed to its own station or all stations, and determines whether the communication data is data from an upper station or a lower station. Transmission processing means 41 performs transmission processing to the lower station or all lower stations when the communication data is data from the upper station, and to the upper station or all upper stations when the communication data is data from the lower station. When the communication data is continuously transmitted, the transmission processing means 41 waits for a predetermined relay delay time and then performs the transmission processing. A transmission unit 33 transmits a radio wave of the communication data with power having a predetermined transmission power value.SELECTED DRAWING: Figure 10

Description

The present invention relates to a wireless relay program and a wireless relay device used in a system for monitoring the condition of equipment installed in a distant place.

Conventionally, there is known a system for monitoring the condition of equipment such as a relay station installed in a distant place. This monitoring system uses a public infrastructure for both electric power and communication to monitor status information such as broadcasting information and power failure information at a broadcasting station installed in a distant place by a host device.

However, when a disaster such as an earthquake or tsunami occurs while operating such a monitoring system, it is assumed that the public infrastructure will be shut down, and the monitoring system will not function.

Generally, with respect to electric power, the relay station is equipped with a backup power source, but regarding communication, it depends on a public packet communication network. Therefore, especially when the backup power supply is exhausted due to a long power failure, the packet communication network is cut off, and as a result, the monitoring system does not function.

In such a monitoring system, a technique of using wireless communication instead of a packet communication network has been proposed (for example, see Patent Document 1). The wireless repeater used for this wireless communication uses a solar battery and a secondary battery in combination to obtain electric power, and transmits and receives status information of a monitoring target via a wireless channel.

As a result, it becomes unnecessary to pull in the power supply line and the line of the packet communication network, and the operation of the monitoring system can be continued even if the public infrastructure is shut off.

JP, 10-285097, A

The technique of the above-mentioned Patent Document 1 operates the monitoring system without using the packet communication network which is the public infrastructure, and is not affected even if the public infrastructure is cut off. ..

However, when a plurality of wireless repeaters are used in a monitoring system that monitors the condition of equipment installed in a distant place, in addition to the wireless signal radio waves that should be originally received, other wireless signal radio waves are also received in the wireless relay devices. There is a possibility that so-called interference will occur, which will result in reception. Therefore, in order to stably operate such a monitoring system, it is necessary to realize relay relay for performing remote communication using a plurality of wireless repeaters and reduce the occurrence of interference in the wireless repeaters. Was desired.

Therefore, the present invention has been made to solve the above problems, and an object thereof is to realize relay relay in a monitoring system for monitoring the status of distant equipment without being affected by the status of public infrastructure. In addition to providing a wireless relay program and a wireless relay device that can reduce interference.

In order to solve the above problems, the wireless relay program according to claim 1 comprises a slave station device, a plurality of wireless relay devices, and a host device, and the host device monitors the state of the slave station device. In the system, a wireless relay program of a computer constituting the wireless relay that relays a wireless signal between the slave station device and the host device, the computer being a reception channel capable of receiving the wireless signal. A plurality of upper station codes and a plurality of upper station channels relating to a plurality of upper stations capable of transmitting and receiving the radio signal, and a memory storing a plurality of lower station codes and a plurality of lower station channels relating to a plurality of lower stations. A communication processing unit that reads the reception channel, the plurality of upper station codes and the plurality of upper station channels, and the plurality of lower station codes and the plurality of lower station channels from the memory of the computer; A receiving unit that receives the wireless signals transmitted from the wireless repeaters of the plurality of upper stations and the plurality of lower stations on the reception channel read by the processing unit, and read by the communication processing unit. The wireless relay of any one of the plurality of upper stations and the plurality of lower stations, using any one of the plurality of upper station channels and the plurality of lower station channels that are issued as a transmission channel. To function as a transmission unit that transmits the wireless signal.

The wireless relay program according to claim 2 is the wireless relay program according to claim 1, wherein a transmission power value is further stored in the memory, and the communication processing unit further stores the transmission power value in the memory. The transmission power value is read out, and the transmission unit uses one of the plurality of upper station channels and the plurality of lower station channels as a transmission channel, and selects one of the plurality of higher station and the plurality of lower station. The wireless signal is transmitted to any one of the wireless repeaters at the power of the transmission power value read by the communication processing unit.

The wireless relay program according to claim 3 is the wireless relay program according to claim 1 or 2, wherein the memory further stores a relay delay time, and the communication processing unit causes the wireless relay program to When transmitting the wireless signal of the communication data, the destination station code which is the higher station code or the lower station code of the transmission destination and the communication data are stored in a transmission queue, and the destination station code and the destination station code from the transmission queue and The communication data is taken out, the upper station channel or the lower station channel corresponding to the destination station code is read from the memory, and the transmission unit is the upper station channel or the lower station read by the communication processing unit. When the wireless signal of the communication data extracted from the transmission queue is transmitted by using a channel as the transmission channel, and the communication processing unit transmits to the transmission queue when the transmission unit transmits the wireless signal, When it is determined whether or not the destination station code and the communication data of the next transmission regarding the wireless signal to be transmitted are stored, and it is determined that the destination station code and the communication data of the next transmission are stored. Reading the relay delay time from the memory, taking out the destination station code of the next transmission and the communication data from the transmission queue after the relay delay time has elapsed, and corresponding to the destination station code of the next transmission from the memory The upper station channel or the lower station channel is read as the upper station channel or the lower station channel for the next transmission, and the transmission unit reads the upper station channel or the lower station for the next transmission read by the communication processing unit. The wireless signal of the communication data of the next transmission extracted from the transmission queue is transmitted using the channel as the transmission channel.

Further, the wireless repeater according to claim 4 comprises a slave station device, a plurality of wireless repeaters, and a host device, wherein the host device monitors the state of the slave station device. A radio relay device for relaying a radio signal between a device and the host device, wherein the reception channel is capable of receiving the radio signal, and a plurality of upper stations related to a plurality of upper stations capable of transmitting and receiving the radio signal. A memory storing a code and a plurality of upper station channels, and a plurality of lower station codes and a plurality of lower station channels related to a plurality of lower stations, from the memory, the reception channel, the plurality of upper station codes, and the plurality of upper stations. A station channel, a communication processing unit that reads out the plurality of lower station codes and the plurality of lower station channels, the reception channel read by the communication processing unit, the plurality of upper stations and the plurality of lower stations A receiver for receiving the radio signal transmitted from the radio repeater, and one of the plurality of upper station channels and the plurality of lower station channels read by the communication processing unit. As a transmission channel, a transmission unit for transmitting the radio signal to any one of the radio repeaters of the plurality of upper stations and the plurality of lower stations is provided.

The wireless relay device according to claim 5 is the wireless relay device according to claim 4, wherein a transmission power value is further stored in the memory, and the communication processing unit further stores the transmission power value in the memory. The transmission power value is read out, and the transmission unit uses one of the plurality of upper station channels and the plurality of lower station channels as a transmission channel, and selects one of the plurality of higher station and the plurality of lower station. The wireless signal is transmitted to any one of the wireless repeaters at the power of the transmission power value read by the communication processing unit.

The wireless repeater according to claim 6 is the wireless repeater according to claim 4 or 5, wherein the memory further stores a relay delay time, and the communication processing unit sets the wireless repeater. When transmitting the wireless signal of the communication data, the destination station code which is the higher station code or the lower station code of the transmission destination and the communication data are stored in a transmission queue, and the destination station code and the destination station code from the transmission queue and The communication data is taken out, the upper station channel or the lower station channel corresponding to the destination station code is read from the memory, and the transmission unit is the upper station channel or the lower station read by the communication processing unit. When the wireless signal of the communication data extracted from the transmission queue is transmitted by using a channel as the transmission channel, and the communication processing unit transmits to the transmission queue when the transmission unit transmits the wireless signal, When it is determined whether or not the destination station code and the communication data of the next transmission regarding the wireless signal to be transmitted are stored, and it is determined that the destination station code and the communication data of the next transmission are stored. Reading the relay delay time from the memory, taking out the destination station code of the next transmission and the communication data from the transmission queue after the relay delay time has elapsed, and corresponding to the destination station code of the next transmission from the memory The upper station channel or the lower station channel is read as the upper station channel or the lower station channel for the next transmission, and the transmission unit reads the upper station channel or the lower station for the next transmission read by the communication processing unit. The wireless signal of the communication data of the next transmission extracted from the transmission queue is transmitted using the channel as the transmission channel.

As described above, according to the present invention, in a monitoring system that monitors the status of distant equipment, relay relay can be realized and interference can be reduced without being affected by the status of public infrastructure.

1 is a schematic diagram showing an overall configuration of a monitoring system including a repeater according to an exemplary embodiment of the present invention. It is a schematic diagram showing an example of composition of a slave station device. It is a schematic diagram showing an example of composition of a repeater. It is a schematic diagram showing an example of composition of a host device. It is a figure explaining an example which avoids interference by setting a receiving channel. It is a figure explaining an example which makes a wireless line into a branch by the setting of an upper station and a lower station. It is a figure explaining an example which reduces interference by setting transmission power. It is a figure explaining an example which avoids competition of transmission and reception by setting a relay delay time. It is a schematic diagram showing an example of hardware constitutions of a substrate for communication. It is a block diagram showing an example of functional composition of a substrate for communication. It is a figure which shows the structural example of communication data. It is a figure which shows an example of the setting information stored in the memory. It is a figure which shows the structural example of the data stored in the transmission queue of memory. It is a flowchart which shows the example of a process by a communication processing part. It is a flowchart which shows the transmission processing (step S1408, S1412) to a destination station. 9 is a flowchart showing a transmission process (step S1409) to all subordinate stations. It is a flowchart which shows the transmission process (step S1413) to all the higher-order stations. It is a flow chart which shows communication data transmission processing (Steps S1502, S1602, and S1702). It is a flow chart which shows data processing (Steps S1403 and S1405).

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.
〔Monitoring system〕
First, a monitoring system including a repeater according to an exemplary embodiment of the present invention will be described. FIG. 1 is a schematic diagram showing an overall configuration of a monitoring system including a repeater according to an embodiment of the present invention.

The monitoring system 1 includes slave stations 2-1-2-2,... Installed in a plurality of relay stations, relays (wireless relays) 3-1 and 3-2 that relay various information. , And the host device 4 installed in the broadcasting hall. Hereinafter, the slave station devices 2-1, 2-2,... Are collectively referred to as the slave station device 2, and the relay devices 3-1, 3-2,... Are collectively referred to as the relay device 3. In the monitoring system 1, the number of slave station devices 2 may be one.

Hereinafter, the present invention will be described by way of embodiments with respect to the slave station device 2, the relay device 3, and the host device 4 that form the monitoring system 1, but the present invention is not limited to the following embodiments, and Various modifications can be made without departing from the technical idea.

Each of the slave station device 2, the repeater 3, and the host device 4 includes an antenna common to transmission and reception for transmitting and receiving radio waves of a radio signal. The slave station device 2, the repeater 3, and the host device 4 are connected by wireless communication for each predetermined branch (for each preset upper station and lower station) to transmit and receive radio waves of communication data. The repeater 3 bidirectionally relays communication data via a predetermined branch. The number of relay relay stages is not limited.

The wireless communication by the slave station device 2, the repeater 3, and the host device 4 is realized without depending on the wireless communication standard. Specifically, since multi-stage relay is performed in the application layer of the OSI reference model, various wireless communication standards can be supported.

In the monitoring system 1, the host device 4 monitors the status of the equipment of the slave station device 2, and, for example, displays status information such as broadcasting information, power failure information, private power generation information, remaining fuel amount, etc. of a broadcasting station that is a relay station, It is received from the slave station device 2 via the repeater 3. Further, the host device 4 receives the power failure information of the repeater 3 and the like from the repeater 3 (via another repeater 3). Further, the host device 4 transmits the setting information described later to the relay device 3 and the slave station device 2. Details will be described later.

FIG. 2 is a schematic diagram showing a configuration example of the slave station device 2 shown in FIG. The slave station device 2 includes a communication substrate 10, a solar cell 11, an I/F (interface) substrate 12, and a relay station monitoring device 13. Here, the communication board 10 is the same as the communication board 10 shown in FIGS. 3 and 4 to be described later, and the slave station device 2, the repeater 3 and the host device 4 have the same function and can be used in common. The communication board 10 is included.

The communication substrate 10 includes a common antenna for transmission and reception, a communication module for specific low power wireless that realizes LoRa (Long Range) specifications using a 920 MHz band of LPWA (Low Power Wide Area) wireless technology, and the like. Details of the communication board 10 will be described later. The solar cell 11 is used as a power source for the communication substrate 10.

The I/F board 12 transfers the reception data transmitted from the upper station from the communication board 10 to the relay station monitoring device 13, and transmits the transmission data to be transmitted to the higher station from the relay station monitoring device 13 to the communication station. Transfer to the substrate 10.

The relay station monitoring device 13 manages status information of a broadcasting station which is a relay station in which the slave station device 2 is installed. The relay station monitoring device 13 inputs, for example, a transmission request for the status information transmitted from the host device 4 from the communication board 10 via the I/F board 12, and the corresponding status information is used as the transmission data. Output to the communication substrate 10 via the /F substrate 12. Further, the relay station monitoring device 13 outputs the status information as transmission data to the communication board 10 via the I/F board 12 at a timing when a predetermined alarm is generated, for example. The status information is transmitted to the host device 4.

FIG. 3 is a schematic diagram showing a configuration example of the repeater 3 shown in FIG. The repeater 3 includes a communication board 10 and a solar cell 11. The communication substrate 10 and the solar cell 11 are the same as those shown in FIG.

FIG. 4 is a schematic diagram showing a configuration example of the host device 4 shown in FIG. The host device 4 includes a communication substrate 10, a solar cell 11, and a host monitoring device 14. The communication substrate 10 and the solar cell 11 are the same as those shown in FIGS. 2 and 3.

The host monitoring device 14 outputs a transmission request of status information to the communication board 10 as transmission data. As a result, the status information transmission request is transmitted to the slave station device 2 via the relay device 3. The host monitoring device 14 inputs the status information sent from the slave station device 2 and the repeater 3 via the communication board 10 and displays it on the screen. Further, the host monitoring device 14 determines the occurrence of an alarm based on, for example, predetermined information included in the state information and a preset threshold value, and displays the alarm on the screen.

Further, the host monitoring device 14 outputs, for example, the setting information of the slave station device 2 and the relay device 3 to the communication board 10 as transmission data. Thereby, the setting information is transmitted to the slave station device 2 and the repeater 3, the setting information is set in the slave station device 2 and the repeater 3, and the setting information stored in the slave station device 2 and the repeater 3 is changed. To be done.

Further, the host monitoring device 14 outputs, for example, a transmission request for setting information to the communication substrate 10 as transmission data. As a result, the setting information transmission request is transmitted to the slave station device 2 and the repeater 3. The host monitoring device 14 inputs the setting information sent from the slave station device 2 and the repeater 3 via the communication board 10, and displays it on the screen.

[Outline of the present invention]
Next, an outline of the present invention will be described using the monitoring system 1 shown in FIG. The monitoring system 1 has the following four functions.
(A) Reception channel setting function (b) Upper station and lower station setting function (c) Transmission power setting function (d) Relay delay time setting function Hereinafter, (a) to (d) will be described.

First, (a) will be described. (A) is a receiving channel setting function, which is used to avoid interference.

FIG. 5 is a diagram illustrating an example of avoiding interference by setting a reception channel. The slave station device 2-1, the repeaters 3-1, 3-2 and the host device 4 have a function of setting a reception channel.

In FIG. 5, it is assumed that the transmission channel is set to 1ch in the slave station device 2-1 and the reception channel is set to 1ch and the transmission channel is set to 2ch in the repeater 3-1. It is also assumed that the repeater 3-2 has the reception channel set to 2 ch and the transmission channel set to 3 ch, and the host device 4 has the reception channel set to 3 ch.

The slave station device 2-1 transmits the radio wave of the radio signal using the 1ch transmission channel, and the relay device 3-1 uses the 1ch reception channel to transmit the radio wave transmitted from the slave station device 2-1. To receive. Further, the repeater 3-1 transmits the radio wave using the transmission channel of 2ch, and the repeater 3-2 receives the radio wave transmitted from the relay 3-1 using the reception channel of 2ch. The repeater 3-2 transmits a radio wave using the 3ch transmission channel, and the host device 4 receives the radio wave transmitted from the relay 3-2 using the 3ch reception channel.

Here, it is assumed that the slave station device 2-1, the repeaters 3-1, 3-2, and the host device 4 cannot set the reception channel, and the common reception channel is fixedly set. The repeaters 3-1 and 3-2 are usually installed at locations such as the summit where the visibility is good. In the slave station device 2-1, the repeaters 3-1, 3-2, and the host device 4, for example, when LoRa modulation is used as a modulation method, wireless communication of several tens km is possible. Then, if the reception channels are fixedly set in common, interference may occur.

In the example of FIG. 5, the host device 4 receives the radio waves transmitted from the slave station device 2-1 and the repeater 3-2, respectively, using a fixed reception channel. Can occur.

Therefore, in the embodiment of the present invention, the communication station 10 included in the slave station device 2-1, the repeaters 3-1, 3-2, and the host device 4 sets the reception channel. Accordingly, when there is a radio line related to interference, the channels for wireless communication can be divided, and the occurrence of interference can be avoided.

Next, the above (b) will be described. (B) is a setting function of the upper station and the lower station, which is used for branching the wireless line.

FIG. 6 is a diagram for explaining an example of branching a wireless line by setting an upper station and a lower station. The repeaters 3A, 3B-1,..., 3B-n, 3C-1,..., 3C-m have a function of setting an upper station and a lower station.

In the repeater 3A, it is assumed that n repeaters 3B-1,..., 3B-n (n high-order station codes and high-order station channels) are set as high-order stations. Further, it is assumed that m repeaters 3C-1,..., 3C-m (m lower station codes and lower station channels) are set as lower stations. n and m are positive integers.

Similarly, in the repeaters 3B-1,..., 3B-n, 3C-1,. In the slave station devices 2-1,... (not shown), an upper station is set, and in the host device 4 (not shown), a lower station is set.

As described above, in the embodiment of the present invention, the communication station 10 included in the slave station device 2, the repeaters 3-1, 3-2 and the host device 4 sets the upper station and the lower station. This makes it possible to branch a wireless line like a wired line, realize relay relay by a plurality of repeaters 3, and secure a backup communication route.

Next, the above (c) will be described. (C) is a transmission power setting function, which is used to reduce interference.

FIG. 7 is a diagram illustrating an example of reducing interference by setting transmission power. The slave station devices 2-1, 2-2, the repeaters 3-1, 3-2, 3-3 and the host device 4 have a function of setting transmission power.

It is assumed that the transmission channel and the reception channel shown in FIG. 7 are set in the slave station devices 2-1, 2-2, the repeaters 3-1, 3-2, 3-3 and the host device 4. As shown in FIG. 7, the transmission channel of the repeater 3-3 is 1ch, and the reception channel of the repeater 3-1 and the host device 4 is 1ch.

In such a setting condition of the transmission channel and the reception channel, the repeater 3-3 transmits the radio wave of the radio signal using the 1ch transmission channel, and the repeater 3-1 and the host device 4 receive the 1ch reception channel. To receive the radio wave transmitted from the repeater 3-3. In this case, the repeater 3-1 receives the radio waves transmitted from the slave station device 2-1 and the repeater 3-3 using the reception channel of 1ch, so that interference occurs in the repeater 3-1. Will end up.

Therefore, in the embodiment of the present invention, the relay 3-3 sets the transmission power when transmitting the radio wave. Specifically, the repeater 3-3 is configured so that the radio wave does not reach the repeater 3-1 and reaches the host device 4 when the radio wave is transmitted using the 1ch transmission channel. Set the transmission power of the transmission channel.

Thereby, the host device 4 can receive the radio wave transmitted from the relay 3-3, and the relay 3-1 cannot receive the radio wave. That is, the relay device 3-1 receives the radio wave transmitted from the slave station device 2-1 and does not receive the radio wave transmitted from the relay device 3-3 using the reception channel of 1ch. The interference at -1 can be reduced.

As described above, if the radio wave is transmitted from the relay 3-3 with excessive transmission power, interference may occur in the relay 3-1. For this reason, the repeater 3-3 suppresses the radio waves from escaping to the repeater 3-1 by setting the transmission power low. Thereby, the interference in the repeater 3-1 can be reduced.

Next, the above (d) will be described. (D) is a relay delay time setting function, and is used for avoiding the occurrence of so-called transmission/reception conflict in which the transmission timing and the reception timing of radio waves are the same.

FIG. 8 is a diagram illustrating an example of avoiding contention between transmission and reception by setting a relay delay time. The slave station devices 2-1, 2-2, the relay devices 3-1, 3-2, 3-3 and the host device 4 have a function of setting a relay delay time.

In FIG. 8, the lower station of the host device 4 is the relay device 3-1, the higher station of the relay device 3-1 is the host device 4, and the lower station of the relay device 3-1 is the relay devices 3-2 and 3-3. -3, and the upper station of the relays 3-2 and 3-3 is the relay 3-1. The lower station of the repeater 3-2 is the slave station device 2-1, the upper station of the slave station device 2-1 is the repeater 3-2, and the lower station of the repeater 3-3 is the slave station device. 2-2, and the upper station of the slave station device 2-2 is the repeater 3-3. That is, it is assumed that the upper station and the lower station shown in FIG. 8 are set in the slave station devices 2-1, 2-2, the repeaters 3-1, 3-2, 3-3 and the host device 4.

In such a setting situation of the upper station and the lower station, the host device 4 acquires the state information from the slave station device 2-1, so that the radio wave of the communication data including the state transmission request is transmitted to the slave station device 2-of the lower station. 1 (step S1).

Upon receiving the radio wave of the communication data from the host device 4 of the higher station, the relay 3-1 transmits the radio wave of the communication data to the relay 3-2 of the lower station (step S2). Further, the repeater 3-1 transmits the radio wave of the communication data to the repeater 3-3 of the lower station (step S7).

When the relay 3-2 receives the radio wave of the communication data from the relay 3-1 of the higher station, the relay 3-2 transmits the radio wave of the communication data to the slave station device 2-1 of the lower station (step S3). When the slave station device 2-1 receives the radio wave of the communication data from the repeater 3-2 of the upper station, the slave station device 2-1 generates the status information corresponding to the status transmission request included in the communication data, and transmits the communication data including the status information. The radio wave is transmitted to the repeater 3-2 of the upper station (step S4).

Upon receiving the radio wave of the communication data from the slave station device 2-1 of the lower station, the relay 3-2 transmits the radio wave of the communication data to the relay 3-1 of the higher station (step S5). Then, when the relay 3-1 receives the radio wave of the communication data from the relay 3-2 of the lower station, the relay 3-1 transmits the radio wave of the communication data to the host device 4 of the higher station (step S6). Thereby, the host device 4 can acquire the status information from the slave station device 2-1.

However, in the repeater 3-1, the transmission timing in step S7 and the reception timing in step S5 may be the same. Since the repeater 3-1 is provided with an antenna common to transmission and reception, the radio wave cannot be received from the repeater 3-2 while transmitting the radio wave to the repeater 3-3.

Specifically, when the repeater 3-1 receives the radio wave from the host device 4, the repeater 3-1 sets the transmission channel of the repeater 3-2 to transmit the radio wave to the repeater 3-2, and then the repeater 3- The transmission channel of 3 is set and the radio wave is transmitted to the repeater 3-3. For this reason, the relay device 3-1 transmits the radio wave of the communication data including the transmission request to the relay device 3-3, and the answer device corresponding to the already transmitted transmission request to the relay device 3-2. Radio waves may be received from the repeater 3-2.

In this way, when the relay 3-1 transfers the transmission request to the plurality of relays 3-2 and 3-3, the transmission to the relay 3-3 and the reception from the relay 3-2 are performed. There is a possibility that contention may occur and the relay 3-1 cannot receive the radio wave from the relay 3-2.

Therefore, in the embodiment of the present invention, the relay 3-1 transmits the transmission request and then transmits the transmission request when transferring the transmission request to the plurality of relays 3-2 and 3-3. In order to delay the timing, the relay delay time is set. Specifically, the relay 3-1 transmits the radio wave of the communication data including the transmission request to the relay 3-2, and when the preset relay delay time has elapsed, the relay 3-1 transmits the radio wave including the transmission request. Send to 3-3. The relay delay time is set in advance to a predetermined time that exceeds the time between the transmission of the transmission request and the reception of the answer corresponding to the transmission request.

Thereby, the relay 3-1 transmits the radio wave of the communication data including the transmission request to the relay 3-2, and receives the radio wave of the answer corresponding to the transmission request from the relay 3-2. Then, the repeater 3-1 will transmit the radio wave of the communication data including the transmission request to the repeater 3-3 when the subsequent relay delay time has elapsed. That is, when the relay 3-1 transfers the transmission request to the plurality of relays 3-2 and 3-3, there is a conflict between the transmission to the relay 3-3 and the reception from the relay 3-2. It can be avoided.

[Repeater 3/Communication board 10]
Next, the repeater 3 shown in FIGS. 1 and 3 will be described. FIG. 9 is a schematic diagram showing a hardware configuration example of the communication board 10 provided in the repeater 3. 9 and FIGS. 10 to 19 described later are also applied to the communication substrate 10 provided in the slave station device 2 and the host device 4.

The communication board 10 is provided with a CPU 21, a communication processing program (wireless relay program), a RAM 22 for storing a table and data (setting information, data of a transmission queue) and the like, and an EEPROM (not shown), and an antenna (not shown). A communication I/F unit 23 that transmits and receives radio waves of communication data, and a development that is used to download, upload, and modify the communication processing program and the table stored in the memory 22 when the user develops the communication processing program. I/F unit 24 for monitoring, a monitoring I/F unit 25 for inputting/outputting data between the relay station monitoring device 13, the host monitoring device 14, and the like, and other constituent units not shown To be done. These are connected to each other via the system bus 26.

The communication processing program is a program for executing a process of receiving communication data from the upper and lower stations, a process of transmitting the communication data to the upper and lower stations, a process based on a communication command included in the communication data, and the like. is there.

The communication processing program is read from the memory 22 and executed by the CPU 21 when the communication board 10 performs processing. Further, various tables and data are generated by the execution of the communication processing program, or received via the communication I/F unit 23 and stored in the memory 22. Then, various tables and data are read from the memory 22 by the CPU 21, processed, and written in the memory 22.

The control unit 20 includes a CPU 21 and a memory 22, and the CPU 21 reads out and executes a communication processing program stored in the memory 22 to integrally control the entire communication board 10. In this way, the communication board 10 has the hardware configuration shown in FIG. 9 and the control unit 20 performs various processes in accordance with the communication processing program.

(Function configuration)
FIG. 10 is a block diagram showing a functional configuration example of the communication board 10, and shows a functional configuration when the control unit 20 shown in FIG. 9 executes the processing of the communication processing program. The communication board 10 includes an antenna 30, a switch 31, a receiver 32, a transmitter 33, a communication processor 34, and a memory 35.

The switch 31, a part of the receiving unit 32, and a part of the transmitting unit 33 correspond to the communication I/F unit 23 illustrated in FIG. 9. Further, the other part of the receiving unit 32, the other part of the transmitting unit 33, the communication processing unit 34, and the memory 35 correspond to the control unit 20 illustrated in FIG. 9.

The antenna 30 is an antenna commonly used for transmission and reception. The switch 31 normally connects the antenna 30 and the receiver 32, and connects the antenna 30 and the transmitter 33 during transmission.

That is, the communication substrate 10 is in a reception standby state in which the antenna 30 and the receiving unit 32 are normally connected, and the receiving unit 32 receives the radio wave of the radio signal via the antenna 30 and the switch 31. On the other hand, when the communication substrate 10 transmits a radio wave of a radio signal, the switch 31 connects the antenna 30 and the transmission unit 33, and the transmission unit 33 transmits the radio wave via the switch 31 and the antenna 30. Then, when the transmission is completed, the communication substrate 10 connects the antenna 30 and the receiving unit 32 by the switch 31, and enters the normal reception standby state.

As described above, the communication substrate 10 cannot transmit and receive radio waves at the same time, is normally in the reception standby state, becomes the transmission enabled state when transmitting, and enters the reception standby state when the transmission is completed. Return.

The receiving unit 32 is included in the setting information stored in the memory 35 from the communication processing unit 34 in the initial state such as when the power is turned on or when the receiving channel included in the setting information described below is changed. Input the receiving channel as channel information. Then, the receiving unit 32 sets and holds the reception channel indicated by the channel information.

The receiving unit 32 receives the radio wave of the reception channel via the antenna 30 and the switch 31, and performs frequency conversion processing, AD (analog-digital) conversion processing, demodulation processing, and the like on the signal, so that the received radio wave is Generate communication data. Then, the receiving unit 32 outputs the communication data to the communication processing unit 34.

The transmitter 33 is included in the setting information stored in the memory 35 from the communication processor 34 in the initial state such as when the power is turned on, or when the transmission power value included in the setting information described later is changed. Enter the transmitted power value.

When transmitting the radio wave, the transmission unit 33 inputs the higher station channel or the lower station channel (destination channel) included in the setting information stored in the memory 35 from the communication processing unit 34 as channel information.

The transmission unit 33 inputs communication data from the communication processing unit 34, and performs modulation processing, frequency conversion processing, power amplification processing, etc. on the communication data. Then, the transmission unit 33 transmits the signal, which has been subjected to the modulation processing and the like, as a radio wave of communication data with the power of the transmission power value using the transmission channel indicated by the channel information, via the switch 31 and the antenna 30.

Here, the transmission unit 33 converts the frequency of the analog signal of the communication data into the radio frequency of the transmission channel indicated by the channel information by the frequency conversion process. In addition, the transmission unit 33 amplifies the power of the signal of the radio frequency to the power of the transmission power value in the power amplification process.

The communication processing unit 34 includes a reception processing unit 40, a transmission processing unit 41, a data processing unit 42, and a transmission power setting processing unit 43.

The reception processing means 40 reads the reception channel included in the setting information from the memory 35 in the initial state such as when the power is turned on or when the reception channel included in the setting information is changed. Then, the reception processing means 40 outputs the reception channel as channel information to the reception unit 32.

The reception processing means 40 receives the communication data from the receiving unit 32 and determines whether the communication data is addressed to itself or all stations. Further, the reception processing means 40 determines whether the communication data is data from the upper station or data from the lower station.

When transmitting the communication data, the transmission processing means 41 stores the destination station code and the communication data for each communication data to be transmitted in the transmission queue of the memory 35, and takes out these data in order from the transmission queue. The transmission processing means 41 reads the upper station channel or the lower station channel included in the setting information from the memory 35 as a channel corresponding to the destination station code, outputs this as channel information to the transmitting unit 33, and transmits communication data. It is output to the unit 33.

When the transmission processing means 41 takes out the destination station code and the communication data from the transmission queue of the memory 35 and outputs the communication data to the transmission unit 33, the transmission destination of the next destination station code and the communication data is stored in the transmission queue of the memory 35. It is determined whether it has been done. When the transmission processing means 41 determines that the next destination station code and communication data are stored, it reads the relay delay time included in the setting information from the memory 35. Then, after the relay delay time has elapsed, the transmission processing means 41 takes out the next destination station code and communication data from the transmission queue of the memory 35, and outputs the communication data to the transmission unit 33.

Thereby, when communication data is continuously transmitted, subsequent communication data is transmitted after the relay delay time has elapsed. Therefore, as shown in FIG. 8, transmission/reception competition can be avoided.

The data processing means 42 performs processing based on the communication command included in the communication data when the communication data input from the receiving section 32 by the reception processing means 40 is addressed to itself or all stations.

The transmission power setting processing unit 43 reads the transmission power value included in the setting information from the memory 35 in the initial state such as when the power is turned on or when the transmission power value included in the setting information is changed. Then, the transmission power setting processing means 43 outputs the transmission power value to the transmission unit 33.

FIG. 11 is a diagram showing a configuration example of communication data. This communication data is data transmitted and received by the slave station device 2, the repeater 3 and the host device 4, and is composed of a header and a payload including a call origination code, a destination code, a communication command, a main body (data main body) and the like. To be done.

The originating code is the station code of the slave station device 2, the repeater 3, or the host device 4 that is the originator (transmitter) of the communication data. The station code is a unique code for identifying each station in the slave station device 2, the repeater 3 and the host device 4. Each of the slave station device 2, the repeater 3, and the host device 4 holds its own station code (own station code).

The destination code is the station code of the slave station device 2, the repeater 3 or the host device 4 that receives the communication data (is the destination of the communication data). When all the slave station devices 2, the repeater 3 and the host device 4 are set as the transmission destinations, the code for all the stations is stored in the destination code.

The communication command is an identifier indicating the type of data processing executed by the data processing unit 42 of the communication processing unit 34 shown in FIG. Details will be described later with reference to FIG.

The main body is data according to the communication command. For example, when the communication command is “send status data”, status information is stored in the main body.

FIG. 12 is a diagram showing an example of the setting information stored in the memory 35. This setting information includes a reception channel, a plurality of higher station codes and a higher station channel, a plurality of lower station codes and a lower station channel, a transmission power value and a relay delay time. The upper station code and the upper station channel are a pair of information, and the lower station code and the lower station channel are a pair of information.

The setting information is set and changed in advance by the user, or is set and changed in advance by communication data including a communication command of “send setting information” transmitted from the host device 4.

The reception channel is a channel of an upper station and a lower station where the communication board 10 receives a radio wave of communication data, and corresponds to an upper station channel and a lower station channel.

The upper station code is the code of the upper station when the wireless line is branched (see FIG. 6). The communication board 10 can transmit and receive radio waves of communication data to and from another communication board 10 that holds a higher station code.

The upper station channel is a receiving channel when receiving the radio wave of communication data from the upper station of the corresponding upper station code, and the transmitting channel when transmitting the radio wave of communication data to the upper station of the corresponding upper station code. Is.

The lower station code is a code of the lower station when branching the wireless line as shown in FIG. The communication board 10 can transmit and receive a radio wave of communication data to and from another communication board 10 that holds the lower station code.

The lower station channel is a receiving channel when receiving the radio wave of communication data from the lower station of the corresponding lower station code, and the transmitting channel when transmitting the radio wave of communication data to the lower station of the corresponding lower station code. Is.

The transmission power value is information for limiting the power when transmitting a radio wave of communication data in order to reduce interference (see FIG. 7).

The relay delay time is information for delaying the transmission timing when continuously transmitting the radio wave of the communication data in order to avoid the transmission/reception conflict (see FIG. 8 ).

The transmission power value may be a value for each station in the plurality of upper stations and the plurality of lower stations. In this case, the transmission processing unit 41 of the communication processing unit 34 reads out the transmission power value corresponding to the destination station code from the transmission power values for each station included in the setting information from the memory 35, and the transmission power value is transmitted to the transmission unit. To 33. The transmission unit 33 inputs the transmission power value from the transmission processing means 41, and transmits the radio wave of the communication data with the power of the transmission power value using the transmission channel indicated by the channel information. As a result, radio waves are transmitted with power having different transmission power values for each transmission channel, so that the reception channel corresponding to the transmission channel is set at each position of the slave station device 2, the repeater 3, and the host device 4. Accordingly, the occurrence of interference can be further reduced.

FIG. 13 is a diagram showing a configuration example of data stored in the transmission queue of the memory 35. The destination station code and communication data are sequentially stored in this transmission queue for each communication data to be transmitted. The destination code and the communication data are a pair of information.

The destination station code and the communication data are sequentially stored in the transmission queue by the transmission processing means 41 of the communication processing unit 34 shown in FIG. Further, the destination station code and the communication data are extracted from the transmission queue in the order in which they are stored, and are deleted when they are extracted.

(Communication processing)
FIG. 14 is a flowchart showing a processing example by the communication processing unit 34 shown in FIG. The reception processing means 40 of the communication processing unit 34 determines whether communication data has been input from the reception unit 32 (whether reception has been performed) (step S1401). When the reception processing means 40 determines in step S1401 that communication data is not input (step S1401:N), the processing by the communication processing unit 34 ends, and the reception processing means 40 restarts the processing of step S1401. To do.

When it is determined in step S1401 that the communication data is input (step S1401: Y), the reception processing means 40 determines whether the communication data is addressed to itself (step S1402). Specifically, the reception processing means 40 extracts the destination code from the payload of the communication data, and determines whether the destination code matches the own code held by the communication board 10.

When it is determined in step S1402 that the communication data is addressed to the own station (step S1402: Y), that is, when the reception code matches the own station code, the reception processing means 40 processes the communication data as the data processing means. To 42. Then, the data processing means 42 inputs the communication data from the reception processing means 40 and performs data processing based on the communication data (step S1403). The processing by the communication processing unit 34 ends, and the reception processing unit 40 restarts the processing of step S1401. Details of the data processing will be described later.

On the other hand, if the reception processing means 40 determines in step S1402 that the communication data is not addressed to the own station (step S1402: N), that is, if the arrival code does not match the own station code, the communication data is not transmitted to all stations. It is determined whether or not it is the destination (step S1404). Specifically, the reception processing means 40 determines whether the destination code extracted from the payload of the communication data is a code addressed to all stations.

When it is determined in step S1404 that the communication data is addressed to all stations (step S1404: Y), that is, when the arrival code is determined to be the code addressed to all stations, the reception processing means 40 processes the communication data as data processing means. To 42. Then, the data processing unit 42 inputs the communication data from the reception processing unit 40, performs data processing based on the communication data as in step S1403 (step S1405), and proceeds to step S1406. Details of the data processing will be described later.

On the other hand, when the reception processing means 40 determines in step S1404 that the communication data is not addressed to all stations (step S1404: N), that is, when the destination code is not addressed to all stations, the communication data is transmitted from the upper station. It is determined whether the received data is received (step S1406). Specifically, the reception processing means 40 extracts the calling station code from the payload of the communication data, reads out all the higher station codes included in the setting information from the memory 35, and sets the calling station code to the higher order station codes. It is determined whether any one of them matches.

When the reception processing means 40 determines in step S1406 that the communication data is the data received from the upper station (step S1406: Y), that is, when the calling station code matches any of the upper station codes. When it is determined, it is determined whether the destination of the communication data is the lower station (step S1407). Specifically, the reception processing unit 40 reads all the lower station codes included in the setting information from the memory 35, and the destination code extracted from the payload of the communication data matches any one of the lower station codes. It is determined whether to do.

When it is determined in step S1407 that the destination of the communication data is the lower station (step S1407: Y), the reception processing unit 40 determines that the destination code matches any of the lower station codes. In this case, the destination code is set as the destination code. The reception processing means 40 outputs the destination station code and communication data to the transmission processing means 41.

The transmission processing means 41 inputs the destination station code and communication data from the reception processing means 40, and performs transmission processing to the destination station based on the destination station code and communication data (step S1408). The processing by the communication processing unit 34 ends, and the reception processing unit 40 restarts the processing of step S1401. Details of the transmission process to the destination station will be described later.

When it is determined in step S1407 that the destination of the communication data is not the lower station (step S1407: N), that is, when the destination code does not match all the lower station codes, the reception processing unit 40 determines all the lower stations. Set the station code to the destination station code. The reception processing means 40 outputs the destination station code (all lower-order station codes) and communication data to the transmission processing means 41.

The transmission processing means 41 inputs the destination station code (all lower station codes) and communication data from the reception processing means 40, and based on the destination station code (all lower station codes) and communication data, sends to all lower stations. Transmission processing is performed (step S1409). The processing by the communication processing unit 34 ends, and the reception processing unit 40 restarts the processing of step S1401. Details of the transmission processing to all the lower stations will be described later.

If the reception processing means 40 determines in step S1406 that the communication data is not the data received from the higher station (step S1406: N), that is, if the originating code does not match all the higher station codes, the communication is performed. It is determined whether the data is the data received from the lower station (step S1410). Specifically, the reception processing unit 40 reads all the lower station codes included in the setting information from the memory 35, and whether the calling station code extracted from the communication data matches any of the lower station codes. Determine whether or not.

When the reception processing means 40 determines in step S1410 that the communication data is the data received from the lower station (step S1410:Y), that is, the calling station code matches any of all the lower station codes. When the determination is made, it is determined whether or not the destination of the communication data is the upper station (step S1411). Specifically, the reception processing means 40 reads all the upper station codes included in the setting information from the memory 35, and the destination code extracted from the payload of the communication data matches any one of the upper station codes. It is determined whether to do.

When it is determined in step S1411 that the destination of the communication data is the higher station (step S1411: Y), the reception processing means 40 determines that the destination code matches any of the higher station codes. In this case, the destination code is set as the destination code. The reception processing means 40 outputs the destination station code and communication data to the transmission processing means 41.

The transmission processing means 41 inputs the destination station code and communication data from the reception processing means 40, and performs transmission processing to the destination station based on the destination station code and communication data (step S1412). The processing by the communication processing unit 34 ends, and the reception processing unit 40 restarts the processing of step S1401. Details of the transmission process to the destination station will be described later.

When it is determined in step S1411 that the destination of the communication data is not the upper station (step S1411: N), that is, when the destination code does not match all the upper station codes, the reception processing means 40 determines all the upper stations. Set the station code to the destination station code. The reception processing means 40 outputs the destination station code (all higher station codes) and communication data to the transmission processing means 41.

The transmission processing means 41 inputs the destination station code (all higher station codes) and communication data from the reception processing means 40, and based on the destination station code (all higher station codes) and communication data, sends to all upper stations. Transmission processing is performed (step S1413). The processing by the communication processing unit 34 ends, and the reception processing unit 40 restarts the processing of step S1401. Details of the transmission processing to all the upper stations will be described later.

FIG. 15 is a flowchart showing the transmission processing (steps S1408 and S1412) to the destination station. This process shows details of steps S1408 and S1412 shown in FIG.

The transmission processing means 41 inputs the destination station code and communication data from the reception processing means 40, and stores the destination station code and communication data in the transmission queue of the memory 35 (step S1501). Then, the transmission processing means 41 performs communication data transmission processing (step S1502). Details of the communication data transmission process will be described later.

FIG. 16 is a flowchart showing a transmission process (step S1409) to all lower stations. This process shows details of step S1409 shown in FIG.

The transmission processing unit 41 inputs the destination station code (all lower station codes) and communication data from the reception processing unit 40, and uses all of the lower station codes as the destination station codes in the transmission queue of the memory 35. The code and communication data are sequentially stored (step S1601). Then, the transmission processing means 41 performs communication data transmission processing (step S1602). Details of the communication data transmission process will be described later.

FIG. 17 is a flowchart showing the transmission processing (step S1413) to all upper stations. This process shows details of step S1413 shown in FIG.

The transmission processing means 41 inputs the destination station code (all higher station codes) and communication data from the reception processing means 40, and uses all of the higher station codes as the destination station codes in the transmission queue of the memory 35, The code and communication data are sequentially stored (step S1701). Then, the transmission processing means 41 performs communication data transmission processing (step S1702). Details of the communication data transmission process will be described later.

FIG. 18 is a flowchart showing the communication data transmission process (steps S1502, S1602, S1702). This process shows details of step S1502 shown in FIG. 15, step S1602 shown in FIG. 16 and step S1702 shown in FIG.

The transmission processing unit 41 takes out the head station code (stored at the head) and the communication data from the transmission queue of the memory 35 (step S1801). The destination station code and the communication data at the head are extracted from the transmission queue, so that the destination station code and the communication data stored next to the head are shifted to the head.

The transmission processing means 41 sets a predetermined header for the communication data extracted from the transmission queue (step S1802).

Regarding the destination station code extracted from the transmission queue, the transmission processing means 41, from the memory 35, the upper station corresponding to the upper station code that matches the destination station code among the upper station channel or the lower station channel included in the setting information. The channel or the lower station channel corresponding to the lower station code is read (step S1803) and set as the transmission channel.

The transmission processing unit 41 sets the transmission channel as the channel information and outputs the communication data and the channel information to the transmission unit 33 (step S1804). The transmission unit 33 inputs communication data and channel information from the transmission processing unit 41.

The reception unit 32 and the transmission unit 33 switch from the reception channel to the transmission channel (step S1805). The switch 31 connects the antenna 30 and the transmission unit 33, the communication substrate 10 is set to the transmittable state, and the transmission unit 33 transmits the radio wave of the communication data (step S1806). In this case, the transmission unit 33 transmits the radio wave of the communication data with the power of the transmission power value already input from the transmission power setting processing unit 43, using the transmission channel indicated by the channel information input from the transmission processing unit 41. To do.

The transmission processing unit 41 determines whether or not the destination station code and the communication data are (are stored) in the transmission queue of the memory 35 (step S1807).

When it is determined in step S1807 that the transmission queue has the destination station code and the communication data (step S1807: Y), the transmission processing unit 41 reads the relay delay time included in the setting information from the memory 35 (step S1808). Then, the transmission processing means 41 waits for the relay delay time (step S1809) and moves to step S1801. Thus, after the communication data is output from the transmission processing unit 41 to the transmission unit 33 and transmitted, and when the relay standby time elapses, the next communication data is output and transmitted.

When the transmission processing means 41 determines in step S1807 that there is no destination station code and communication data in the transmission queue (step S1807: N), the reception units 32 and 33 switch from the transmission channel to the reception channel (step S1807). S1810). The switch 31 connects the antenna 30 and the receiving unit 32, and the communication substrate 10 is in a normal reception standby state (step S1811).

FIG. 19 is a flowchart showing data processing (steps S1403 and S1405). This process shows details of steps S1403 and S1405 shown in FIG.

The data processing unit 42 inputs the communication data from the reception processing unit 40 and extracts the communication command (and the main body) from the payload of the communication data (step S1901). Here, the data processing unit 42 extracts the communication command and the main body when the data of the main body is stored in the payload of the communication data, and extracts only the communication command when the data of the main body is not stored.

The data processing unit 42 performs processing based on the communication command (and the main body) (step S1902).

The communication command includes, for example, “status transmission request”, “status data transmission”, “Ping request”, “Ping answer return”, “date and time information transmission”, “setting information reply request”, “setting information transmission”, “setting information change request”, and “control request”. , Etc.

For example, the communication command “state transmission request” is a command when the host device 4 acquires the state information of the slave station device 2, and “state data transmission” is the command when the slave station device 2 transmits the state information. It is a command.

The host monitoring device 14 of the host device 4 outputs a transmission request for acquiring the status information of the slave station device 2 to the communication board 10 of the host device 4. When the transmission request is input from the host monitoring device 14, the communication substrate 10 generates communication data in which “state transmission request” is set in the communication command, and transmits the radio wave of the communication data to the repeater 3. The radio wave of the communication data arrives at the slave station device 2 via the repeater 3.

The communication board 10 of the slave station device 2 receives the radio wave of the communication data in which “state transmission request” is set in the communication command. Then, the data processing unit 42 provided in the communication processing unit 34 of the communication board 10 determines the communication command “status transmission request” and outputs the transmission request to the relay station monitoring device 13 via the I/F board 12. ..

When the transmission request is input, the relay station monitoring device 13 generates status information corresponding to the request, and outputs the status information to the communication board 10 via the I/F board 12. The communication board 10 inputs status information from the relay station monitoring device 13 via the I/F board 12, sets “status data transmission” in the communication command, and generates communication data in which status information is set in the main body. Then, the radio wave of the communication data is transmitted to the repeater 3. The radio wave of the communication data arrives at the host device 4 via the repeater 3.

The communication board 10 of the host device 4 receives the radio wave of the communication data in which “state data transmission” is set in the communication command and the state information is set in the main body. Then, the data processing means 42 provided in the communication processing unit 34 of the communication board 10 determines the communication command "send state data", extracts the state information set in the main body, and outputs the state information to the host monitoring device 14. Output to. Thereby, the host monitoring device 14 of the host device 4 can acquire the status information managed by the relay station monitoring device 13 of the slave station device 2.

The “Ping request” of the communication command is a command used when the host device 4 or the like obtains the round trip time (RTT) or the data loss rate. “Ping answer return” is a command when the target slave station device 2 or the like transmits a reply of “Ping request”.

The communication command “date and time information transmission” is a command for the host device 4 or the like to transmit its own timer “date and time information”.

In addition, as for the “setting information reply request” of the communication command, the host apparatus 4 acquires the setting information (see FIG. 12) stored in the memory 35 of the communication board 10 provided in the slave station apparatus 2 and the repeater 3. It is a command when doing. “Send setting information” is a command when the slave station device 2 or the like sends setting information.

The host monitoring device 14 of the host device 4 outputs to the communication board 10 of the host device 4 a reply request for acquiring the setting information of the repeater 3, for example. When the reply request is input from the host monitoring device 14, the communication board 10 generates communication data in which a “setting information reply request” is set in the communication command, and transmits the radio wave of the communication data to the repeater 3.

The communication board 10 of the repeater 3 receives the radio wave of the communication data in which the “setting information reply request” is set in the communication command. Then, the data processing unit 42 provided in the communication processing unit 34 of the communication board 10 determines the communication command “setting information reply request” and reads the setting information from the memory 35. Then, the data processing unit 42 sets “transmission of setting information” in the communication command, generates communication data in which the setting information is set in the main body, and transmits the radio wave of the communication data to the host device 4.

The communication board 10 of the host device 4 receives the radio wave of the communication data in which “send setting information” is set in the communication command and the setting information is set in the main body. Then, the data processing unit 42 provided in the communication processing unit 34 of the communication board 10 determines the communication command “send setting information”, extracts the setting information set in the main body, and extracts the setting information from the host monitoring device 14. Output to. As a result, the host monitoring device 14 of the host device 4 can acquire the setting information of the communication board 10 included in the repeater 3.

The “setting information change request” of the communication command is a command for the host device 4 to change the setting information stored in the memory 35 of the communication board 10 provided in the slave station device 2 and the repeater 3. .. That is, according to the “setting information change request”, the receiving channel which is the setting information set in the communication board 10, the plurality of upper station codes and the upper station channels, the plurality of lower station codes and the lower station channels, the transmission power value, and It is possible to change one or more pieces of information in the relay delay time.

The host monitoring device 14 of the host device 4 sends a change request and change data for changing the setting information (may be a part of the setting information) of the repeater 3 to the communication board 10 of the host device 4, for example. Output. When the change request and the change data are input from the host monitoring device 14, the communication board 10 sets the “setting information change request” in the communication command, generates the communication data in which the change data is set in the main body, and transmits the communication data The radio wave is transmitted to the repeater 3.

The communication board 10 of the repeater 3 receives the radio wave of the communication data in which the “setting information change request” is set in the communication command and the change data is set in the main body. Then, the data processing unit 42 provided in the communication processing unit 34 of the communication board 10 determines the communication command “setting information change request” and extracts the change data set in the main body. Then, the data processing unit 42 stores the changed data in the target portion of the setting information stored in the memory 35. As a result, the host monitoring device 14 of the host device 4 can change the setting information of the communication board 10 included in the repeater 3.

The “control request” of the communication command is a command for remotely controlling the relay device 3 so that the host device 4 controls the relay relay by the relay device 3.

As described above, the relay device 3 according to the embodiment of the present invention is configured to include the communication substrate 10 and the solar cell 11. The reception unit 32 included in the communication substrate 10 holds the reception channel included in the setting information stored in the memory 35 as channel information, and from the radio waves received via the antenna 30 and the switch 31, the communication data of the reception channel. To generate.

The reception processing means 40 of the communication processing unit 34 provided in the communication board 10 inputs the communication data from the receiving unit 32, and compares the destination code extracted from the communication data with the own station code held by itself. By doing so, it is determined whether or not the communication data is addressed to itself. Further, the reception processing means 40 determines whether the communication data is addressed to all stations by comparing the destination code extracted from the communication data with the code addressed to all stations. Further, the reception processing means 40 determines whether or not the communication data is from the upper station by comparing the calling code extracted from the communication data with all the higher station codes included in the setting information. To do. Further, the reception processing means 40 determines whether or not the communication data is data from the lower station by comparing the calling code extracted from the communication data with all the lower station codes included in the setting information. To do.

The data processing means 42 performs processing based on the communication command included in the communication data when the communication data is addressed to itself or to all stations.

When the communication data is data from a higher station, the transmission processing means 41 performs a transmission process to the destination station or a transmission process to all the lower stations. Further, when the communication data is data from a lower station, the transmission processing means 41 performs a transmission process to the destination station or a transmission process to all the upper stations.

The transmission processing means 41 stores the destination station code and the communication data in the transmission queue during the transmission process, and extracts the destination station code and the like from the transmission queue. When the transmission station 41 has the destination station code or the like when performing the transmission process by extracting the destination station code or the like from the transmission queue, the transmission processing unit 41 waits for the relay delay time included in the setting information and then from the transmission queue. The destination station code and the like are taken out and transmission processing is performed.

The transmission unit 33 included in the communication board 10 transmits the radio wave of the communication data generated by the transmission processing of the transmission processing unit 41 from the antenna 30 via the switch 31 with the power of the transmission power value included in the setting information. Send.

In this way, the communication substrate 10 of the repeater 3 sets the reception channel. The same applies to the slave station device 2 and the host device 4 provided with the same communication board 10. By this, when there is a wireless line related to interference, it is possible to separate the channels of wireless communication and avoid the occurrence of interference (see FIG. 5).

Further, the communication board 10 of the repeater 3 is configured to set the upper station (upper station code and upper station channel) and the lower station (lower station code and lower station channel). As a result, like a wired line, a wireless line can be branched, relay relay by a plurality of relays 3 can be realized, and a backup communication route can be secured (see FIG. 6).

Further, the communication board 10 of the repeater 3 is configured to set the transmission power when transmitting the radio wave of the communication data. As a result, when the communication board 10 of the repeater 3 transmits a radio wave using the transmission channel of 1ch, for example, the communication board 10 reaches only the repeater 3 of the upper station or the lower station that receives the radio wave on the 1ch, and transmits the radio wave. The transmission power of the transmission channel of 1ch can be set so that it does not reach the other repeater 3 that receives on 1ch. Therefore, interference in the repeater 3 can be reduced (see FIG. 7).

Further, the communication board 10 provided in the repeater 3 is designed to transmit the radio wave of the communication data after waiting the relay delay time when continuously transmitting the radio wave of the communication data. Thereby, the relay device 3 transmits the transmission request to the first relay device 3, receives the answer from the first relay device 3, and then transmits the transmission request to the second relay device when the relay delay time elapses thereafter. Will be transmitted to the repeater 3. That is, when the relay 3 transfers the transmission request to the plurality of other relays 3, it is possible to avoid the competition between the reception from the first relay and the transmission to the second relay 3. (See Figure 8).

Therefore, in a monitoring system that monitors the status of distant equipment, relay relay can be realized and interference can be reduced without being affected by the status of public infrastructure. In other words, even if the public infrastructure is shut off, various kinds of information about a broadcasting station or the like installed in a distant place can be reliably acquired by wireless transmission.

1 Monitoring system 2 Slave station devices 3, 3A, 3B, 3C Repeater (wireless repeater)
4 Host Device 10 Communication Board 11 Solar Cell 12 I/F (Interface) Board 13 Relay Station Monitoring Device 14 Host Monitoring Device 20 Control Unit 21 CPU
22, 35 memory 23 communication I/F unit 24 development I/F unit 25 monitoring I/F unit 26 system bus 30 antenna 31 switch 32 receiving unit 33 transmitting unit 34 communication processing unit 40 reception processing unit 41 transmission processing unit 42 Data processing means 43 Transmission power setting processing means

Claims (6)

In a monitoring system including a slave station device, a plurality of wireless repeaters, and a host device, wherein the host device monitors the state of the slave station device, a wireless signal is transmitted between the slave station device and the host device. A wireless relay program of a computer that constitutes the wireless relay device for relaying,
The computer is
A receiving channel capable of receiving the radio signal, a plurality of upper station codes and a plurality of upper station channels relating to a plurality of upper stations capable of transmitting and receiving the wireless signal, and a plurality of lower station codes and a plurality of lower station codes relating to a plurality of lower stations. It is equipped with a memory that stores lower station channels,
The computer,
A communication processing unit that reads the reception channel, the plurality of upper station codes and the plurality of upper station channels, and the plurality of lower station codes and the plurality of lower station channels from the memory.
A receiving unit that receives the wireless signals transmitted from the wireless relays of the plurality of upper stations and the plurality of lower stations on the reception channel read by the communication processing unit, and
Any one of the plurality of upper stations and the plurality of lower stations with one of the plurality of upper station channels and the plurality of lower station channels read by the communication processing unit as a transmission channel A wireless relay program for functioning as a transmitter for transmitting the wireless signal to one of the wireless relays. The wireless relay program according to claim 1,
In the memory,
Furthermore, the transmission power value is stored,
The communication processing unit,
Further, reading the transmission power value from the memory,
The transmitter is
To the wireless repeater of any one of the plurality of upper stations and the plurality of lower stations, using any one of the plurality of upper station channels and the plurality of lower station channels as a transmission channel, A wireless relay program for transmitting the wireless signal with the power of the transmission power value read by a communication processing unit. In the wireless relay program according to claim 1 or 2,
In the memory,
In addition, the relay delay time is stored,
The communication processing unit,
When the wireless relay transmits the wireless signal of communication data, the destination station code which is the higher station code or the lower station code of the transmission destination and the communication data are stored in a transmission queue,
Fetching the destination station code and the communication data from the transmission queue, reading the upper station channel or the lower station channel corresponding to the destination station code from the memory,
The transmitter is
Using the upper station channel or the lower station channel read by the communication processing unit as the transmission channel, transmitting the wireless signal of the communication data extracted from the transmission queue,
The communication processing unit,
When the transmission unit transmits the wireless signal, the transmission queue determines whether or not the destination station code and the communication data of the next transmission regarding the wireless signal to be transmitted next are stored, and the next transmission is performed. When it is determined that the destination station code and the communication data are stored, the relay delay time is read from the memory, and after the relay delay time has elapsed,
The destination station code of the next transmission and the communication data are retrieved from the transmission queue, and the upper station channel or the lower station channel corresponding to the destination station code of the next transmission is stored in the memory, the upper station channel of the next transmission, or Read as the lower station channel,
The transmitter is
Transmitting the wireless signal of the communication data of the next transmission extracted from the transmission queue, using the upper station channel or the lower station channel of the next transmission read by the communication processing unit as the transmission channel. A featured wireless relay program. In a monitoring system including a slave station device, a plurality of wireless repeaters, and a host device, wherein the host device monitors the state of the slave station device, a wireless signal is transmitted between the slave station device and the host device. A wireless relay device for relaying,
A receiving channel capable of receiving the radio signal, a plurality of upper station codes and a plurality of upper station channels relating to a plurality of upper stations capable of transmitting and receiving the wireless signal, and a plurality of lower station codes and a plurality of lower station codes relating to a plurality of lower stations. Memory that stores lower station channels,
A communication processing unit that reads the reception channel, the plurality of upper station codes and the plurality of upper station channels, and the plurality of lower station codes and the plurality of lower station channels from the memory.
A receiving unit that receives the wireless signals transmitted from the wireless relays of the plurality of upper stations and the plurality of lower stations on the reception channel read by the communication processing unit, and
Any one of the plurality of upper stations and the plurality of lower stations with one of the plurality of upper station channels and the plurality of lower station channels read by the communication processing unit as a transmission channel A wireless repeater, comprising: a transmitter for transmitting the wireless signal to one of the wireless repeaters. The wireless repeater according to claim 4,
In the memory,
Furthermore, the transmission power value is stored,
The communication processing unit,
Further, reading the transmission power value from the memory,
The transmitter is
One of the plurality of upper station channels and the plurality of lower station channels as a transmission channel to the wireless repeater of any one of the plurality of upper station and the plurality of lower station, A wireless repeater, wherein the wireless signal is transmitted with the power of the transmission power value read by a communication processing unit. The wireless repeater according to claim 4 or 5,
In the memory,
In addition, the relay delay time is stored,
The communication processing unit,
When the wireless relay transmits the wireless signal of communication data, the destination station code which is the higher station code or the lower station code of the transmission destination and the communication data are stored in a transmission queue,
Fetching the destination station code and the communication data from the transmission queue, reading the upper station channel or the lower station channel corresponding to the destination station code from the memory,
The transmitter is
Using the upper station channel or the lower station channel read by the communication processing unit as the transmission channel, transmitting the wireless signal of the communication data extracted from the transmission queue,
The communication processing unit,
When the transmission unit transmits the wireless signal, the transmission queue determines whether or not the destination station code and the communication data of the next transmission regarding the wireless signal to be transmitted next are stored, and the next transmission is performed. When it is determined that the destination station code and the communication data are stored, the relay delay time is read from the memory, and after the relay delay time has elapsed,
The destination station code of the next transmission and the communication data are retrieved from the transmission queue, and the upper station channel or the lower station channel corresponding to the destination station code of the next transmission is stored in the memory, the upper station channel of the next transmission, or Read as the lower station channel,
The transmitter is
Transmitting the radio signal of the communication data of the next transmission extracted from the transmission queue, using the upper station channel or the lower station channel of the next transmission read by the communication processing unit as the transmission channel. Characteristic wireless repeater.

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