JP2022085419A - Radio wave measuring device - Google Patents

Abstract

To provide a radio wave measuring device that can more easily confirm a radio wave condition in an area where a plurality of wireless communication terminals are installed.SOLUTION: A radio wave measuring device 20 includes a wireless communication unit 22 and a control unit 21. The control unit 21 causes a first response request signal R1 to be transmitted from the wireless communication unit 22 by broadcast. The control unit 21 obtains, via the wireless communication unit 22, a first response signal A1 transmitted from a primary wireless communication terminal that received the first response request signal R1. The control unit 21 causes a first control signal to be transmitted from the wireless communication unit 22 to the primary wireless communication terminal. The first control signal causes a second response request signal R2 to be transmitted from the primary wireless communication terminal by broadcast, causes the primary wireless communication terminal to receive a second response signal A2 transmitted from a secondary wireless communication terminal that received the second response request signal R2, and causes data indicating an electric field strength value of the second response signal A2 to be transmitted from the primary wireless communication terminal to the radio wave measuring device 20.SELECTED DRAWING: Figure 3

Description

The present invention relates to a radio wave measuring device.

A type of wireless communication system is a telemeter system (see, for example, Patent Document 1). A telemeter system is a system that transmits a value (measured value) measured by a meter such as a gas meter, a water meter, or a power meter to a center by wireless communication. The telemeter system includes a master unit and a plurality of slave units. A meter is connected to each of the multiple slave units, and each slave unit acquires the measured value from the meter connected to its own unit and sends the data (measurement data) indicating the measured value to the master unit. do. The master unit transmits the measurement data transmitted from each slave unit to the center.

In the wireless meter reading system of Patent Document 1, each slave unit measures and stores the electric field strength of the radio wave received by the slave unit. The user of the wireless meter reading system can identify the cause of the communication failure by reading out the electric field strength data stored in each slave unit. Specifically, the operator acquires electric field strength data from each slave unit using a wireless device.

Japanese Unexamined Patent Publication No. 2010-15486

However, when acquiring electric field strength data from each slave unit using a wireless device, the operator moves to multiple points to acquire electric field strength data in order to investigate the radio wave condition in a wide area. It is necessary and the burden on the worker is heavy.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a radio wave measuring device capable of more easily confirming a radio wave condition in an area where a plurality of wireless communication terminals are installed.

The radio wave measuring device of the present invention collects status information indicating the radio wave condition in an area where a plurality of wireless communication terminals are installed. The plurality of wireless communication terminals include a primary wireless communication terminal and a secondary wireless communication terminal capable of wireless communication with each other. The radio wave measuring device includes a wireless communication unit and a control unit. The wireless communication unit performs wireless communication with the primary wireless communication terminal. The control unit causes the wireless communication unit to transmit a control signal to the primary wireless communication terminal. The control unit causes the wireless communication unit to broadcast a first response request signal indicating a response request. The control unit acquires the first response signal transmitted from the primary wireless communication terminal that has received the first response request signal via the wireless communication unit. The control unit causes the primary wireless communication terminal specified from the first response signal to transmit the control signal from the wireless communication unit. The control signal includes a first control signal. The first control signal was transmitted from the second wireless communication terminal that received the second response request signal by transmitting a second response request signal indicating a response request by broadcast from the primary wireless communication terminal. Indicates an instruction to cause the primary wireless communication terminal to receive the second response signal and to transmit data indicating the electric field strength value of the second response signal from the primary wireless communication terminal to the radio wave measuring device. The control unit collects the electric field strength value of the second response signal as the situation information.

According to the radio wave measuring device of the present invention, it is possible to more easily confirm the radio wave condition in the area where a plurality of wireless communication terminals are installed.

It is a figure which shows the communication system. It is a figure which shows the state which one of the primary wireless communication terminals is collecting the radio wave condition. It is a block diagram which shows the structure of the radio wave measurement terminal which concerns on Embodiment 1 of this invention. It is a block diagram which shows the structure of a slave unit. It is a block diagram which shows the structure of a master unit. It is a flowchart which shows the process which the control part of the radio wave measurement terminal which concerns on Embodiment 1 of this invention performs. It is a sequence diagram which shows a part of the processing executed by the radio wave measurement terminal which concerns on Embodiment 1 of this invention. It is a sequence diagram which shows a part of the processing executed by the radio wave measurement terminal which concerns on Embodiment 1 of this invention. It is a sequence diagram which shows a part of other examples of the processing performed by the radio wave measurement terminal which concerns on Embodiment 1 of this invention. It is a figure which shows the state which one of the secondary wireless communication terminals is collecting the radio wave condition. It is a flowchart which shows the process which the control part of the radio wave measurement terminal which concerns on Embodiment 2 of this invention performs. It is a sequence diagram which shows a part of the processing executed by the radio wave measurement terminal which concerns on Embodiment 2 of this invention. It is a sequence diagram which shows a part of other examples of the processing performed by the radio wave measurement terminal which concerns on Embodiment 2 of this invention.

Hereinafter, embodiments according to the radio wave measuring device of the present invention will be described with reference to the drawings (FIGS. 1 to 13). However, the present invention is not limited to the following embodiments, and can be implemented in various embodiments without departing from the gist thereof. In addition, the description may be omitted as appropriate for the parts where the explanations are duplicated. Further, in the figure, the same or corresponding parts are designated by the same reference numerals and the description is not repeated.

[Embodiment 1]
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 9. First, the communication system 100 will be described with reference to FIG. FIG. 1 is a diagram showing a communication system 100.

The communication system 100 includes a plurality of wireless communication terminals. The plurality of wireless communication terminals perform wireless communication based on predetermined relationship information. The relationship information defines a combination of wireless communication terminals that communicate with each other in a plurality of wireless communication terminals. Specifically, each wireless communication terminal stores information indicating a communication partner of its own machine as matchmaking information. In this embodiment, the communication system 100 is a telemeter system. Hereinafter, the communication system 100 may be referred to as a "telemeter system 100".

As shown in FIG. 1, the telemeter system 100 includes a plurality of slave units 10 and a master unit 40. Further, the telemeter system 100 includes a plurality of meters 30 (see FIGS. 4 and 5) and a center (not shown). The slave unit 10 and the master unit 40 are examples of wireless communication terminals.

The telemeter system 100 is a system that collects values (measurement results) measured by each meter 30. Specifically, the results of measurement by each meter 30 are collected in the center. The meter 30 is, for example, a gas meter, a water meter, or a power meter.

The plurality of slave units 10 and the master unit 40 perform wireless communication based on predetermined relationship information. The relationship information defines a combination of communication partners (wireless communication terminals) that communicate with each other in the plurality of slave units 10 and the master unit 40. Specifically, each of the plurality of slave units 10 stores the identification information of the communication partner of the own unit as the relationship information. Similarly, the master unit 40 stores the identification information of the communication partner of the own unit as the relationship information. The identification information includes, for example, the identification ID of the communication partner and the address information of the communication partner.

In the telemeter system 100, for example, communication by a specific low power radio (extra small radio) is used for communication between the slave unit 10 and the master unit 40 and communication between the slave units 10. The frequency band for communication by the extra small radio is, for example, the 920 MHz band. Hereinafter, communication by extra small radio may be referred to as "extra small radio communication".

The plurality of meters 30 are connected to the plurality of slave units 10 and the master unit 40. Each of the plurality of slave units 10 acquires measurement results from the meter 30 connected to the own unit, and transmits the acquired measurement results to the master unit 40. The master unit 40 transmits the measurement results transmitted from each slave unit 10 to the center via the wide area communication network. Further, the master unit 40 acquires measurement results from the meter 30 connected to its own unit, and transmits the acquired measurement results to the center via a wide area communication network.

The wide area wireless network is, for example, a PHS (Personal Handy-phone System) network, a FOMA (Freedom Of Mobile Multimedia Access) network, an LTE (Long Term Evolution) network, a 4G (4th generation mobile communication system) network, or a 5G (4th generation mobile communication system) network. (5th generation mobile communication system) Network.

Subsequently, the radio wave measurement terminal 20 of the present embodiment will be described with reference to FIGS. 1 and 2. The radio wave measuring terminal 20 is an example of a radio wave measuring device. The radio wave measurement terminal 20 performs wireless communication by the same wireless communication method as that of the slave unit 10 and the master unit 40.

The radio wave measurement terminal 20 collects status information indicating the radio wave condition in the area where the plurality of slave units 10 and the master unit 40 are installed. Specifically, as shown in FIG. 1, a worker operates a radio wave measurement terminal 20 in an area where a plurality of slave units 10 and a master unit 40 are installed, so that the radio wave measurement terminal 20 becomes the first. 1 The response request signal R1 is transmitted by broadcast. The first response request signal R1 is a signal requesting a response.

In the present embodiment, as shown in FIG. 1, the first response request signal R1 is received by the six slave units 10-1 to 10-6 installed within the communication distance of the radio wave measurement terminal 20. Will be done. For example, the communication distance of the extra small wireless communication is 1 m or more and 1000 m or less. The slave units 10-1 to 10-6 are examples of primary wireless communication terminals. Hereinafter, the handset 10 installed within the communication distance of the radio wave measurement terminal 20 may be referred to as a "primary wireless communication terminal". In the present embodiment, the primary wireless communication terminal includes only the slave unit 10, but the primary wireless communication terminal may include the master unit 40.

The first response request signal R1 includes identification information for identifying the radio wave measurement terminal 20. After receiving the first response request signal R1, each of the primary wireless communication terminals (slave units 10-1 to 10-6) performs wireless communication with the radio wave measurement terminal 20.

Specifically, each of the primary wireless communication terminals (slave units 10-1 to 10-6) transmits the first response signal A1 to the radio wave measurement terminal 20. The first response signal A1 is, for example, a beacon. The first response signal A1 includes identification information for identifying a primary wireless communication terminal that transmits the first response signal A1. For example, the first response signal A1 transmitted by the slave unit 10-1 includes identification information for identifying the slave unit 10-1.

The radio wave measurement terminal 20 detects the electric field strength value of the first response signal A1 transmitted from each of the primary wireless communication terminals (slave units 10-1 to 10-6), and detects the electric field as status information. Stores data indicating the intensity value. As a result, the radio wave condition within the communication distance of the radio wave measurement terminal 20 is collected as the condition information. Hereinafter, the radio wave condition (electric field strength value of the first response signal A1) within the communication distance of the radio wave measurement terminal 20 may be described as “the 0th radio wave condition”.

FIG. 2 is a diagram showing a state in which one of the primary wireless communication terminals (slave units 10-1 to 10-6) is collecting radio wave conditions (status information). Specifically, FIG. 2 shows a state in which the handset 10-2 is collecting radio wave conditions (situation information).

After collecting the 0th radio wave condition, the radio wave measurement terminal 20 controls each primary wireless communication terminal so that each primary wireless communication terminal collects the radio wave condition (status information). In the present embodiment, the radio wave measurement terminal 20 causes each of the slave units 10-1 to 10-6 to collect radio wave conditions (situation information).

Specifically, as shown in FIG. 2, the radio wave measurement terminal 20 causes the primary wireless communication terminal (slave unit 10-2) to transmit the second response request signal R2 by broadcasting. The second response request signal R2 is a signal requesting a response.

In this embodiment, as shown in FIG. 2, seven slave units 10-1, 10-3, and 10-7 to within the communication distance of the slave units 10-2 (primary wireless communication terminal). 10-11 is installed. Therefore, the second response request signal R2 transmitted from the slave unit 10-2 is received by the slave units 10-1, 10-3, and 10-7 to 10-11. The slave units 10-1, 10-3, and 10-7 to 10-11 are examples of secondary wireless communication terminals. Hereinafter, the handset 10 installed within the communication distance of the primary wireless communication terminal may be referred to as a "secondary wireless communication terminal". In the present embodiment, the secondary wireless communication terminal includes only the slave unit 10, but the secondary wireless communication terminal may include the master unit 40.

The second response request signal R2 includes identification information for identifying the primary wireless communication terminal (for example, the slave unit 10-2). Each of the secondary wireless communication terminals (for example, slave units 10-1, 10-3, and 10-7 to 10-11) receives the second response request signal R2 and then transmits the second response request signal R2. Wireless communication is performed with the primary wireless communication terminal (for example, slave unit 10-2).

Specifically, the secondary wireless communication terminals (for example, slave units 10-1, 10-3, and 10-7 to 10-11) each transmit the second response request signal R2 for the primary wireless communication. The second response signal A2 is transmitted to the terminal (for example, the handset 10-2). The second response signal A2 is, for example, a beacon. The second response signal A2 includes identification information for identifying a secondary wireless communication terminal that transmits the second response signal A2. For example, the second response signal A2 transmitted by the slave unit 10-1 includes identification information for identifying the slave unit 10-1.

In the following description, when it is not necessary to distinguish between the first response request signal R1 and the second response request signal R2, the first response request signal R1 and the second response request signal R2 are referred to as "response request". It may be described as "Signal R". Similarly, when it is not necessary to distinguish between the first response signal A1 and the second response signal A2, the first response signal A1 and the second response signal A2 may be described as "response signal A". ..

The primary wireless communication terminal (for example, slave unit 10-2) is transmitted from each of the secondary wireless communication terminals (for example, slave units 10-1, 10-3, and 10-7 to 10-11). The electric field strength value of the second response signal A2 is detected, and the data of the detected electric field strength value is stored as the situation information. As a result, the radio wave condition within the communication distance of the primary wireless communication terminal (for example, the slave unit 10-2) is collected as the status information.

The primary wireless communication terminal (for example, the handset 10-2) transmits the collected data indicating the radio wave condition to the radio wave measurement terminal 20 as the condition information. Specifically, the primary wireless communication terminal (for example, the slave unit 10-2) transmits data indicating the detected electric field strength value to the radio wave measurement terminal 20 as status information. The radio wave measurement terminal 20 stores the status information transmitted from the primary wireless communication terminal (for example, the handset 10-2).

The slave unit 10-1 and 10-3 to 10-6 (other primary wireless communication terminals) also collect the radio wave condition within the communication distance of the slave unit in the same manner as the slave unit 10-2. , The data indicating the collected radio wave condition (electric field strength value of the second response signal A2) is transmitted to the radio wave measurement terminal 20 as the condition information. As a result, the radio wave measurement terminal 20 stores the status information transmitted from each of the slave unit 10-1 and 10-3 to 10-6 (another primary wireless communication terminal). Hereinafter, the radio wave condition (electric field strength value of the second response signal A2) within the communication distance of the primary radio communication terminal may be described as "primary radio wave condition".

Subsequently, the configuration of the radio wave measurement terminal 20 will be described with reference to FIG. FIG. 3 is a block diagram showing the configuration of the radio wave measurement terminal 20 of the present embodiment. As shown in FIG. 3, the radio wave measurement terminal 20 includes a control unit 21, a wireless communication unit 22, a storage unit 23, and an operation unit 24.

The control unit 21 controls each element of the radio wave measurement terminal 20. For example, the control unit 21 controls the wireless communication unit 22 and the storage unit 23. The control unit 21 includes a processor such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), for example. The processor controls each element of the radio wave measurement terminal 20 by executing a computer program stored in the storage unit 23. A microcomputer may be configured by the control unit 21 and the storage unit 23.

As described with reference to FIG. 1, the wireless communication unit 22 performs wireless communication with the primary wireless communication terminal (slave units 10-1 to 10-6). Specifically, as described with reference to FIG. 1, the wireless communication unit 22 broadcasts the first response request signal R1 and receives the first response signal A1. The wireless communication unit 22 has a wireless communication circuit unit 221 and an antenna 222.

The wireless communication circuit unit 221 converts the signal output from the control unit 21 to the wireless communication circuit unit 221 into a signal conforming to a predetermined wireless communication method, and transmits the signal to the antenna 222. As a result, radio waves (radio signals) conforming to a predetermined wireless communication method are emitted from the antenna 222. The wireless communication circuit unit 221 converts the wireless signal (radio wave) received by the antenna 222 into a signal that can be processed by the control unit 21 and outputs the signal to the control unit 21. The wireless communication circuit unit 221 is, for example, a communication module having an RF-LSI for 920 MHz band communication.

The wireless communication circuit unit 221 detects the value of the electric field strength of the radio wave received by the antenna 222. The wireless communication circuit unit 221 outputs the detected electric field strength value to the control unit 21. The control unit 21 detects the electric field strength value for each first response signal A1 received by the antenna 222.

The storage unit 23 stores the identification information of the radio wave measurement terminal 20 and various computer programs executed by the control unit 21 (processor). The storage unit 23 further stores the situation information. Specifically, the electric field strength value of the first response signal A1 is stored as the situation information. Further, as described with reference to FIG. 2, the electric field strength value of the second response signal A2 is stored as the situation information. The storage unit 23 includes, for example, a ROM (Read Only Memory), a RAM (Random Access Memory), and a semiconductor memory such as a flash memory.

The operation unit 24 is operated by an operator. The operator can transmit the first response request signal R1 from the radio wave measurement terminal 20 by operating the operation unit 24. The operation unit 24 includes, for example, a push button.

Subsequently, the process executed by the control unit 21 will be described with reference to FIG. The control unit 21 causes the operator to operate the operation unit 24 to broadcast the first response request signal R1 from the wireless communication unit 22. As a result, the control unit 21 acquires the first response signal A1 transmitted from each of the primary wireless communication terminals (slave units 10-1 to 10-6) via the wireless communication unit 22. Then, the control unit 21 acquires the identification information of each of the primary wireless communication terminals (slave units 10-1 to 10-6) from the first response signal A1. Further, the control unit 21 acquires each electric field strength value of the first response signal A1 from the wireless communication unit 22 and stores it in the storage unit 23 as status information (collection of the 0th radio wave condition).

Further, the control unit 21 sequentially transmits the first control signal from the wireless communication unit 22 to each of the primary wireless communication terminals (slave units 10-1 to 10-6) specified from the first response signal A1. Let me. More specifically, the control unit 21 identifies each primary wireless communication terminal based on the identification information acquired from each of the first response signals A1. Then, the wireless communication unit 22 transmits the first control signal addressed to the specified primary wireless communication terminal.

As the first control signal, the second response request signal R2 is transmitted by broadcast from the primary wireless communication terminal, and the second response signal A2 transmitted from the secondary wireless communication terminal that has received the second response request signal R2 is transmitted. Indicates an instruction to be received by the primary wireless communication terminal and to transmit data indicating the electric field strength value of the second response signal A2 from the primary wireless communication terminal to the radio wave measurement terminal 20. The control unit 21 stores the status information transmitted from the primary wireless communication terminal in the storage unit 23. As a result, the electric field strength value of the second response signal A2 is collected in the radio wave measurement terminal 20 as status information (collection of the first radio wave condition).

Subsequently, the configuration of the slave unit 10 will be described with reference to FIG. FIG. 4 is a block diagram showing the configuration of the slave unit 10. As shown in FIG. 4, the slave unit 10 includes a control unit 11, a wireless communication unit 12, a connection unit 13, and a storage unit 14. The wireless communication unit 12 has a wireless communication circuit unit 121 and an antenna 122.

The electric wire PL connected to the meter 30 is connected to the connection portion 13. Therefore, the connection portion 13 is wiredly connected to the meter 30 via the electric wire PL. The control unit 11 acquires the measurement result from the meter 30 via the electric wire PL and the connection unit 13.

The control unit 11 controls each element of the slave unit 10. For example, the control unit 11 controls the wireless communication unit 12 and the storage unit 14. The control unit 11 includes a processor such as a CPU or an MPU. The processor controls each element of the slave unit 10 by executing a computer program stored in the storage unit 14. A microcomputer may be configured by the control unit 11 and the storage unit 14.

The wireless communication unit 12 performs wireless communication. Specifically, the wireless communication unit 12 transmits and receives radio waves (radio signals). Since the configuration of the wireless communication unit 12 is substantially the same as that of the wireless communication unit 22 of the radio wave measurement terminal 20, detailed description thereof will be omitted.

The storage unit 14 stores the identification information for identifying the own machine and the identification information for identifying the communication partner of the own machine. Further, the storage unit 14 stores various computer programs executed by the control unit 11 (processor). The storage unit 14 includes a semiconductor memory such as a ROM, a RAM, and a flash memory.

Subsequently, with reference to FIG. 4, a process executed by the control unit 11 of the slave unit 10 that has received the response request signal R will be described. When the control unit 11 acquires the response request signal R via the wireless communication unit 12, the control unit 11 transmits the response signal A to the wireless communication terminal that has transmitted the response request signal R based on the identification information included in the response request signal R. It is transmitted from the wireless communication unit 12.

Subsequently, with reference to FIG. 4, a process executed by the control unit 11 of the slave unit 10 that has received the first control signal will be described. When the control unit 11 acquires the first control signal via the wireless communication unit 12, the control unit 11 causes the wireless communication unit 12 to broadcast the second response request signal R2 based on the first control signal. As a result, the wireless communication unit 12 receives the second response signal A2 transmitted from the secondary wireless communication terminal that has received the second response request signal R2.

The wireless communication unit 12 detects the electric field strength value of the received second response signal A2, and outputs a signal indicating the detected electric field strength value to the control unit 11. As a result, the control unit 11 stores the electric field strength value of the second response signal A2 in the storage unit 14. After that, the control unit 11 reads out the electric field strength value of each second response signal A2 from the storage unit 14, and causes the wireless communication unit 12 to transmit the data indicating each electric field strength value to the radio wave measurement terminal 20.

Subsequently, the configuration of the master unit 40 will be described with reference to FIG. FIG. 5 is a block diagram showing the configuration of the master unit 40. As shown in FIG. 5, the master unit 40 includes a control unit 41, a first wireless communication unit 42, a second wireless communication unit 43, a connection unit 44, and a storage unit 45. The first wireless communication unit 42 has a first wireless communication circuit unit 421 and a first antenna 422. The second wireless communication unit 43 has a second wireless communication circuit unit 431 and a second antenna 432.

As described with reference to FIG. 1, the second wireless communication unit 43 performs wireless communication with the center via the wide area wireless network. The second wireless communication circuit unit 431 is a communication module capable of wide area communication such as, for example, a PHS network, a FOMA network, an LTE network, a 4G network, and a 5G network.

Since the configurations of the control unit 41, the first wireless communication unit 42, the connection unit 44, and the storage unit 45 are substantially the same as those of the control unit 11, the wireless communication unit 12, the connection unit 13, and the storage unit 14 of the slave unit 10. , Detailed explanation is omitted. Further, since the processing executed by the control unit 41 of the master unit 40 is substantially the same as the processing executed by the control unit 11 of the slave unit 10, detailed description thereof will be omitted.

Subsequently, the process executed by the control unit 21 of the radio wave measurement terminal 20 will be described with reference to FIGS. 1 to 6. FIG. 6 is a flowchart showing a process executed by the control unit 21 of the radio wave measurement terminal 20. The process shown in FIG. 6 is started by the operator operating the operation unit 24 of the radio wave measurement terminal 20.

When the operator operates the operation unit 24 of the radio wave measurement terminal 20, the control unit 21 causes the wireless communication unit 22 to broadcast the first response request signal R1 (step S1). As a result, the wireless communication unit 22 receives the first response signal A1 from each of the primary wireless communication terminals (slave units 10-1 to 10-6).

The control unit 21 acquires the first response signal A1 via the wireless communication unit 22, and identifies the primary wireless communication terminals (slave units 10-1 to 10-6) from each of the first response signals A1. To get. Further, the wireless communication unit 22 detects each electric field strength value of the first response signal A1 and outputs a signal indicating the detected electric field strength value to the control unit 21. As a result, the 0th radio wave condition (electric field strength value of the first response signal A1) is collected in the radio wave measurement terminal 20 (step S2). Specifically, the control unit 21 stores the electric field strength value of each first response signal A1 detected by the wireless communication unit 22 in the storage unit 23 as status information.

After collecting the 0th radio wave condition, the control unit 21 causes the wireless communication unit 22 to transmit the first control signal to one of the primary wireless communication terminals (for example, the slave unit 10-2). (Step S3). As a result, the primary radio wave condition is collected from one of the primary wireless communication terminals (for example, the handset 10-2) to the radio wave measurement terminal 20 (step S4).

For example, the slave unit 10-2 that has received the first control signal transmits the second response request signal R2 by broadcasting. The slave unit 10-2 receives the second response signal A2 transmitted from each of the slave units 10-1, 10-3, 10-7 to 10-11 that received the second response request signal R2, and receives the second response signal A2. 2 The electric field strength value of each response signal A2 is detected. After that, the slave unit 10-2 transmits data indicating each electric field strength value of the detected second response signal A2 to the radio wave measurement terminal 20 as status information. The control unit 21 of the radio wave measurement terminal 20 acquires data indicating the primary radio wave condition (electric field strength value of the second response signal A2) transmitted from the slave unit 10-2 via the wireless communication unit 22. Then, it is stored in the storage unit 23 (step S4).

The control unit 21 causes one of the primary wireless communication terminals to collect the primary radio wave condition, and then determines whether or not the collection of the primary radio wave condition is completed (step S5). Specifically, the control unit 21 determines whether or not status information (data indicating the primary radio wave condition) has been received from all the primary wireless communication terminals (slave units 10-1 to 10-6). do.

If the control unit 21 has not received data indicating the primary radio wave condition from all the primary wireless communication terminals, it is determined that the collection of the primary radio wave condition has not been completed (No in step S5). , Step S3 and step S4 are executed again.

When the control unit 21 receives data indicating the primary radio wave condition from all the primary wireless communication terminals, it determines that the collection of the primary radio wave condition is completed (Yes in step S5), and FIG. 6 shows. The processing shown is terminated.

The control unit 21 of the radio wave measurement terminal 20 may repeatedly execute the process shown in FIG. 6 every time a certain time elapses after the operator operates the operation unit 24 of the radio wave measurement terminal 20. .. As a result, the storage unit 23 of the radio wave measurement terminal 20 can store the history of the 0th radio wave condition and the 1st radio wave condition.

Subsequently, the process executed by the radio wave measurement terminal 20 will be described with reference to FIGS. 1 to 8. 7 and 8 are sequence diagrams showing a part of the processing executed by the radio wave measurement terminal 20, respectively.

As shown in FIG. 7, when the operator operates the operation unit 24 of the radio wave measurement terminal 20, the radio wave measurement terminal 20 broadcasts the first response request signal R1. As a result, the slave units 10-1 to 10-6 (primary wireless communication terminals) receive the first response request signal R1 and transmit the first response signal A1 to the radio wave measurement terminal 20. The radio wave measurement terminal 20 collects the electric field strength values of the first response signal A1.

As shown in FIG. 8, the radio wave measurement terminal 20 collects the electric field strength value of the first response signal A1 and then sends the broadcast request signal R11 to one of the slave units 10-1 to 10-6. Send. The broadcast request signal R11 is a signal that requests the primary wireless communication terminal to transmit the second response request signal R2 by broadcasting. FIG. 8 shows a broadcast request signal R11 transmitted to the slave unit 10-2. In the present embodiment, the first control signal includes the broadcast request signal R11.

Upon receiving the broadcast request signal R11, the slave unit 10-2 transmits the response signal A11 to the radio wave measurement terminal 20, and then transmits the second response request signal R2 by broadcasting.

As a result, the slave units 10-1, 10-3, and 10-7 to 10-11 (secondary wireless communication terminal) receive the second response request signal R2, and the second slave unit 10-2 is addressed. The response signal A2 is transmitted. The slave unit 10-2 detects each electric field strength value of the second response signal A2.

The radio wave measurement terminal 20 transmits the result request signal R12 to the slave unit 10-2 after a certain period of time has elapsed after receiving the response signal A11 from the slave unit 10-2. The result request signal R12 is a signal requesting that data indicating the electric field strength value of the second response signal A2 be transmitted to the radio wave measurement terminal 20. In the present embodiment, the first control signal includes the result request signal R12.

Upon receiving the result request signal R12, the slave unit 10-2 transmits the response signal A12 to the radio wave measurement terminal 20. The response signal A12 carries data indicating the electric field strength value of the second response signal A2. As a result, data indicating the primary radio wave condition (electric field strength value of the second response signal A2) is collected from the handset 10-2 to the radio wave measurement terminal 20.

The radio wave measurement terminal 20 collects the primary radio wave condition from the slave unit 10-2, and then sequentially receives the primary radio wave condition from each of the other slave units 10-1 and 10-3 to 10-6. To collect.

The first embodiment of the present invention has been described above with reference to FIGS. 1 to 8. According to the present embodiment, the radio wave measurement terminal 20 can collect radio wave conditions within the range of each communication distance of the wireless communication terminal (primary wireless communication terminal) that has received the first response request signal R1. can. Therefore, the worker can investigate the radio wave condition in a wide area without moving to a plurality of points. Therefore, according to the present embodiment, it is possible to more easily confirm the radio wave condition in the area where a plurality of wireless communication terminals are installed.

In the example shown in FIG. 8, the primary wireless communication terminal receives the broadcast request signal R11 and then transmits the response signal A11 to the radio wave measurement terminal 20, but the primary wireless communication terminal measures the radio wave. The process of transmitting the response signal A11 to the terminal 20 may be omitted.

Further, in the example shown in FIG. 8, the radio wave measurement terminal 20 receives the response signal A11 from the primary wireless communication terminal, and after a certain period of time has elapsed, the result request signal R12 is addressed to the primary wireless communication terminal. However, the process of transmitting the result request signal R12 to the primary wireless communication terminal by the radio wave measurement terminal 20 may be omitted. In this case, the radio wave measurement terminal 20 may be in a standby state until the response signal A12 is received from the primary wireless communication terminal.

Hereinafter, other examples of the processing executed by the radio wave measurement terminal 20 will be described with reference to FIGS. 1 to 7 and 9. FIG. 9 is a sequence diagram showing a part of other examples of the processing executed by the radio wave measurement terminal 20.

In the example shown in FIG. 9, when the slave unit 10-2 (primary wireless communication terminal) receives the broadcast request signal R11 from the radio wave measurement terminal 20, the second response request signal R2 is based on the broadcast request signal R11. Is broadcast. In the example shown in FIG. 9, the broadcast request signal R11 requests that the second response request signal R2 be transmitted by broadcast, and data indicating the electric field strength value of the second response signal A2 is sent to the radio wave measurement terminal 20. A signal that requires transmission.

When the slave unit 10-2 detects the electric field strength values of the second response signal A2 received from the slave units 10-1, 10-3, and 10-7 to 10-11 (secondary wireless communication terminal). , The response signal A12 is transmitted to the radio wave measurement terminal 20 based on the broadcast request signal R11.

[Embodiment 2]
Subsequently, the second embodiment of the present invention will be described with reference to FIGS. 1 to 13. However, matters different from those of the first embodiment will be described, and explanations of the same matters as those of the first embodiment will be omitted. The second embodiment is different from the first embodiment in that the radio wave condition within the range of each communication distance of the secondary wireless communication terminal is collected.

First, the radio wave measurement terminal 20 of the present embodiment will be described with reference to FIG. FIG. 10 is a diagram showing a state in which one of the secondary wireless communication terminals is collecting radio wave conditions (status information). Specifically, FIG. 10 shows a state in which the handset 10-9 is collecting radio wave conditions (situation information).

The radio wave measurement terminal 20 collects the primary radio wave condition from the primary wireless communication terminals (slave units 10-1 to 10-6), and then each primary wireless communication terminal and each secondary wireless communication terminal. Is controlled so that each secondary wireless communication terminal collects radio wave conditions (status information). In the present embodiment, the radio wave measurement terminal 20 causes each wireless communication terminal that has received the second response request signal R2 transmitted from the slave units 10-1 to 10-6 to collect the radio wave condition (status information).

Specifically, as shown in FIG. 10, the radio wave measurement terminal 20 causes a secondary wireless communication terminal (for example, a slave unit 10-9) to transmit a third response request signal R3 by broadcasting. The third response request signal R3 is a signal requesting a response.

In this embodiment, as shown in FIG. 10, eight slave units 10-3, 10-7, 10-8, and eight slave units within the communication distance of the slave unit 10-9 (secondary wireless communication terminal), and 10-10 to 10-14 are installed. Therefore, the third response request signal R3 transmitted from the slave unit 10-9 is received by the slave units 10-3, 10-7, 10-8, and 10-10 to 10-14. The slave units 10-3, 10-7, 10-8, and 10-10 to 10-14 are examples of the third wireless communication terminal. Hereinafter, the handset 10 installed within the communication distance of the secondary wireless communication terminal may be referred to as a "third wireless communication terminal". In the present embodiment, the tertiary wireless communication terminal includes only the slave unit 10, but the tertiary wireless communication terminal may include the master unit 40.

The third response request signal R3 includes identification information for identifying the secondary wireless communication terminal (for example, the slave unit 10-9). Each of the third wireless communication terminals (for example, slave units 10-3, 10-7, 10-8, and 10-10 to 10-14) receives the third response request signal R3 and then requests the third response. Wireless communication is performed with a secondary wireless communication terminal (for example, slave unit 10-9) that has transmitted the signal R3.

Specifically, each of the third wireless communication terminals (for example, slave units 10-3, 10-7, 10-8, and 10-10 to 10-14) transmitted the third response request signal R3. The third response signal A3 is transmitted to the secondary wireless communication terminal (for example, the slave unit 10-9). The third response signal A3 is, for example, a beacon. The third response signal A3 includes identification information for identifying the third wireless communication terminal that transmits the third response signal A3. For example, the third response signal A3 transmitted by the slave unit 10-3 includes identification information for identifying the slave unit 10-3.

The secondary wireless communication terminal (for example, slave unit 10-9) is a tertiary wireless communication terminal (for example, slave unit 10-3, 10-7, 10-8, and 10-10 to 10-14). The electric field strength value of the third response signal A3 transmitted from each is detected, and the data of the detected electric field strength value is stored as the situation information. As a result, the radio wave condition within the communication distance of the secondary wireless communication terminal (for example, the slave unit 10-9) is collected as the status information.

The secondary wireless communication terminal (for example, slave unit 10-9) transmits the collected data indicating the radio wave condition to the corresponding primary wireless communication terminal (for example, slave unit 10-2) as status information. .. Specifically, the secondary wireless communication terminal (for example, the slave unit 10-9) uses the data indicating the detected electric field strength value as the status information, and the corresponding primary wireless communication terminal (for example, the slave unit 10). -Send to -2). The primary wireless communication terminal (for example, the slave unit 10-2) stores the status information transmitted from the secondary wireless communication terminal (for example, the slave unit 10-9).

Other secondary wireless communication terminals (for example, slave units 10-1, 10-3, 10-7, 10-8, 10-10, and 10-11) are also within the communication range of their own unit. The radio wave condition in the above is collected, and the data indicating the collected radio wave condition (electric field strength value of the third response signal A3) is used as status information in the corresponding primary wireless communication terminal (for example, slave unit 10-2). Send. As a result, the primary wireless communication terminal (for example, the slave unit 10-2) becomes another secondary wireless communication terminal (for example, the slave unit 10-1, 10-3, 10-7, 10-8, 10). The status information transmitted from each of -10 and 10-11) is stored. Hereinafter, the radio wave condition (electric field strength value of the third response signal A3) within the communication distance of the secondary radio communication terminal may be described as "secondary radio wave condition".

The primary wireless communication terminal (for example, the handset 10-2) transmits the collected data indicating the secondary radio wave condition to the radio wave measurement terminal 20 as the status information. Specifically, the primary wireless communication terminal (for example, the slave unit 10-2) is the corresponding secondary wireless communication terminal (for example, the slave units 10-1, 10-3, and 10-7 to 10-). The data indicating the electric field strength value detected by 11) is transmitted to the radio wave measurement terminal 20 as status information. The radio wave measurement terminal 20 stores the status information transmitted from the primary wireless communication terminal (for example, the handset 10-2).

Similarly, other primary wireless communication terminals (for example, slave units 10-1, 10-3 to 10-6) also receive a secondary radio wave condition (third response signal) from each of the corresponding secondary wireless communication terminals. The electric field strength value of A3) is collected, and the collected data indicating the secondary radio wave condition is transmitted to the radio wave measurement terminal 20 as the condition information. As a result, the radio wave measurement terminal 20 has a secondary radio wave condition (status information) transmitted from each of the other primary wireless communication terminals (for example, slave units 10-1, 10-3 to 10-6). Remember.

Subsequently, a process executed by the control unit 21 of the radio wave measurement terminal 20 will be described with reference to FIG. The control unit 21 causes each of the primary wireless communication terminals (slave units 10-1 to 10-6) specified from the first response signal A1 to sequentially transmit the second control signal from the wireless communication unit 22. The second control signal is from the primary wireless communication terminal (for example, slave unit 10-2) to the secondary wireless communication terminal (for example, slave units 10-1, 10-3, and 10-7 to 10-11). Indicates an instruction to transmit a third control signal to.

As the third control signal, the third response request signal R3 is transmitted by a broadcast from the second wireless communication terminal (for example, the slave unit 10-9), and the third response request signal R3 is received by the third wireless communication terminal (for example). For example, the third response signal A3 transmitted from the slave unit 10-3, 10-7, 10-8, 10-10 to 10-14) is sent to the secondary wireless communication terminal (for example, the slave unit 10-9). Data indicating the electric field strength value of the third response signal A3 to be received is transmitted from the secondary wireless communication terminal (for example, slave unit 10-9) to the corresponding primary wireless communication terminal (for example, slave unit 10-2). ) Is shown to indicate an instruction to be transmitted to the radio wave measurement terminal 20. The control unit 21 stores the status information transmitted from the secondary wireless communication terminal (for example, the slave unit 10-9) in the storage unit 23. As a result, the electric field strength value of the third response signal A3 is collected in the radio wave measurement terminal 20 as status information (collection of the second radio wave condition).

Subsequently, the process executed by the control unit 21 of the radio wave measurement terminal 20 will be described with reference to FIGS. 1 to 11. FIG. 11 is a flowchart showing a process executed by the control unit 21 of the radio wave measurement terminal 20. The process shown in FIG. 11 is started by the operator operating the operation unit 24 of the radio wave measurement terminal 20.

When the operator operates the operation unit 24 of the radio wave measurement terminal 20, the control unit 21 stores the 0th radio wave condition and the 1st radio wave condition in the storage unit 23 as status information by the processing of steps S11 to S15. Let me. Since the processes of steps S11 to S15 are the same as the processes of steps S1 to S5 described with reference to FIG. 6, the description thereof will be omitted.

When the control unit 21 determines that the collection of the primary radio wave condition is completed (Yes in step S15), the control unit 21 wirelessly communicates with one of the primary wireless communication terminals (for example, the slave unit 10-2). A second control signal is transmitted from the unit 22 (step S16). As a result, the secondary radio wave condition is collected from one of the primary wireless communication terminals (for example, the handset 10-2) to the radio wave measurement terminal 20 (step S17).

For example, the slave unit 10-2 transmits a third control signal to the slave units 10-1, 10-3, and 10-7 to 10-11 based on the second control signal. As a result, the data indicating the electric field strength value (secondary radio wave condition) of the third response signal A3 is obtained from each of the slave units 10-1, 10-3, and 10-7 to 10-11. Will be sent to. The slave unit 10-2 uses the data indicating the secondary radio wave condition received from each of the slave units 10-1, 10-3, and 10-7 to 10-11 as status information in the radio wave measurement terminal 20. Send. The control unit 21 of the radio wave measurement terminal 20 acquires data indicating the secondary radio wave condition (electric field strength value of the third response signal A3) transmitted from the slave unit 10-2 via the wireless communication unit 22. Then, it is stored in the storage unit 23 (step S17).

The control unit 21 causes one of the primary wireless communication terminals to collect the secondary radio wave condition, and then determines whether or not the collection of the secondary radio wave condition is completed (step S18). Specifically, the control unit 21 determines whether or not status information (data indicating the secondary radio wave condition) has been received from all the primary wireless communication terminals (slave units 10-1 to 10-6). do.

If the control unit 21 has not received data indicating the secondary radio wave condition from all the primary wireless communication terminals, it is determined that the collection of the secondary radio wave condition has not been completed (No in step S18). , Step S16 and step S17 are executed again.

When the control unit 21 receives data indicating the secondary radio wave condition from all the primary wireless communication terminals, it determines that the collection of the secondary radio wave condition is completed (Yes in step S18), and FIG. 11 shows. The processing shown is terminated.

The control unit 21 of the radio wave measurement terminal 20 may repeatedly execute the process shown in FIG. 11 every time a certain time elapses after the operator operates the operation unit 24 of the radio wave measurement terminal 20. .. As a result, the storage unit 23 of the radio wave measurement terminal 20 can store the history of the 0th radio wave condition, the 1st radio wave condition, and the 2nd radio wave condition.

Subsequently, the process executed by the radio wave measurement terminal 20 will be described with reference to FIGS. 1 to 12. FIG. 12 is a sequence diagram showing a part of the processing executed by the radio wave measurement terminal 20.

The radio wave measurement terminal 20 collects the 0th radio wave condition and the 1st radio wave condition as described with reference to FIGS. 7 to 9, and then, as shown in FIG. 12, the slave units 10-1 to 10- The communication request signal R13 is transmitted to one of the units 6. The communication request signal R13 is a signal that requests the primary wireless communication terminal to transmit the broadcast request signal R21. FIG. 12 shows a communication request signal R13 transmitted to the slave unit 10-2. In the present embodiment, the second control signal includes the communication request signal R13.

After receiving the communication request signal R13, the slave unit 10-2 transmits the response signal A13 to the radio wave measurement terminal 20, and then the secondary wireless communication terminals (slave units 10-1, 10-3, and 10-7). The broadcast request signal R21 is transmitted to one of ~ 10-11). FIG. 12 shows a broadcast request signal R21 transmitted to the slave unit 10-9. In the present embodiment, the third control signal includes the broadcast request signal R21.

The slave unit 10-9 that has received the broadcast request signal R21 transmits the response signal A21 to the slave unit 10-2, and then transmits the third response request signal R3 by broadcasting.

As a result, the slave units 10-3, 10-7, 10-8, and 10-10 to 10-14 (third wireless communication terminal) receive the third response request signal R3, and the slave units 10-9. The third response signal A3 is transmitted to the address. The slave unit 10-9 detects each electric field strength value of the third response signal A3.

The slave unit 10-2 transmits the result request signal R22 to the slave unit 10-9 after a certain period of time has elapsed after receiving the response signal A21 from the slave unit 10-9. The result request signal R22 is a signal requesting that data indicating the electric field strength value of the third response signal A3 be transmitted to the slave unit 10-2. In the present embodiment, the third control signal includes the result request signal R22.

When the slave unit 10-9 receives the result request signal R22, the slave unit 10-9 transmits a response signal A22 to the slave unit 10-2. The response signal A22 carries data indicating the electric field strength value of the third response signal A3. As a result, data indicating the secondary radio wave condition (electric field strength value of the third response signal A3) is collected from the slave unit 10-9 to the slave unit 10-2.

After collecting the second radio wave condition from the slave unit 10-2, the slave unit 10-2 collects the second radio wave condition, and then the other slave units 10-1, 10-3, 10-7, 10-8, 10-10, and 10-11. The secondary radio wave condition is sequentially collected from each of the above.

The radio wave measurement terminal 20 transmits the result request signal R14 to the slave unit 10-2 after a certain period of time has elapsed after receiving the response signal A13 from the slave unit 10-2. The result request signal R14 is a signal requesting that data indicating the electric field strength value of the third response signal A3 be transmitted to the radio wave measurement terminal 20. In the present embodiment, the second control signal includes the result request signal R14.

Upon receiving the result request signal R14, the slave unit 10-2 transmits the response signal A14 to the radio wave measurement terminal 20. The response signal A14 carries data indicating the electric field strength value of the third response signal A3. As a result, data indicating the secondary radio wave condition (electric field strength value of the third response signal A3) is collected from the handset 10-2 to the radio wave measurement terminal 20.

The radio wave measurement terminal 20 collects the secondary radio wave condition from the slave unit 10-2, and then sequentially receives the secondary radio wave condition from each of the other slave units 10-1 and 10-3 to 10-6. To collect.

The second embodiment of the present invention has been described above with reference to FIGS. 1 to 12. According to the present embodiment, the radio wave measurement terminal 20 can collect the radio wave condition within the communication distance of the wireless communication terminal (secondary wireless communication terminal) that has received the second response request signal R2. Therefore, the worker can investigate the radio wave condition in a wide area without moving to a plurality of points. Therefore, according to the present embodiment, it is possible to more easily confirm the radio wave condition in the area where a plurality of wireless communication terminals are installed.

In the example shown in FIG. 12, the primary wireless communication terminal receives the communication request signal R13 and then transmits the response signal A13 to the radio wave measurement terminal 20, but the primary wireless communication terminal measures the radio wave. The process of transmitting the response signal A13 to the terminal 20 may be omitted.

Further, in the example shown in FIG. 12, the secondary wireless communication terminal receives the broadcast request signal R21 and then transmits the response signal A21 to the corresponding primary wireless communication terminal, but the secondary wireless communication terminal May omit the process of transmitting the response signal A21 to the primary wireless communication terminal.

Further, in the example shown in FIG. 12, the primary wireless communication terminal receives the response signal A21 from the secondary wireless communication terminal, and after a certain period of time has elapsed, the result request signal is sent to the secondary wireless communication terminal. Although R22 is transmitted, the process of transmitting the result request signal R22 to the secondary wireless communication terminal by the primary wireless communication terminal may be omitted. In this case, the primary wireless communication terminal may be in a standby state until the response signal A22 is received from the secondary wireless communication terminal.

Further, in the example shown in FIG. 12, the radio wave measurement terminal 20 receives the response signal A13 from the primary wireless communication terminal, and after a certain period of time has elapsed, the result request signal R14 is addressed to the primary wireless communication terminal. However, the process of transmitting the result request signal R14 to the primary wireless communication terminal by the radio wave measurement terminal 20 may be omitted. In this case, the radio wave measurement terminal 20 may be in a standby state until the response signal A14 is received from the primary wireless communication terminal.

Hereinafter, other examples of the processing executed by the radio wave measurement terminal 20 will be described with reference to FIGS. 1 to 11 and 13. FIG. 13 is a sequence diagram showing a part of other examples of the processing executed by the radio wave measurement terminal 20.

In the example shown in FIG. 13, when the slave unit 10-2 (primary wireless communication terminal) receives the communication request signal R13 from the radio wave measurement terminal 20, the slave unit 10-1 and the slave unit 10-1 are based on the communication request signal R13. The broadcast request signal R21 is transmitted to one of 10-3 and 10-7 to 10-11 (secondary wireless communication terminal). FIG. 13 shows a broadcast request signal R21 transmitted to the slave unit 10-9. In the example shown in FIG. 13, the communication request signal R13 requests the transmission of the broadcast request signal R21 and also requests that the data indicating the electric field strength value of the third response signal A3 be transmitted to the radio wave measurement terminal 20. It is a signal.

When the slave unit 10-9 (secondary wireless communication terminal) receives the broadcast request signal R21 from the slave unit 10-2 (primary wireless communication terminal), the slave unit 10-9 receives a third response request signal based on the broadcast request signal R21. Broadcast R3. In the example shown in FIG. 13, the broadcast request signal R21 requests that the third response request signal R3 be transmitted by broadcast, and the data indicating the electric field strength value of the third response signal A3 is transmitted to the corresponding primary radio. It is a signal requesting to be transmitted to a communication terminal.

The slave unit 10-9 (secondary wireless communication terminal) receives from the slave units 10-3, 10-7, 10-8, and 10-10 to 10-14 (third wireless communication terminal). When each electric field strength value of the response signal A3 is detected, the response signal A22 is transmitted to the slave unit 10-2 (primary wireless communication terminal) based on the broadcast request signal R21.

The slave unit 10-2 (primary wireless communication terminal) collects the second radio wave condition from the slave unit 10-9 (secondary wireless communication terminal), and then the other slave units 10-1, 10-3, The secondary radio wave condition is sequentially collected from each of 10-7, 10-8, 10-10, and 10-11 (another secondary wireless communication terminal).

When the slave unit 10-2 (primary wireless communication terminal) collects the secondary radio wave condition from the slave units 10-1, 10-3 and 10-7 to 10-11 (secondary wireless communication terminal), Based on the communication request signal R13, the response signal A14 is transmitted to the radio wave measurement terminal 20.

The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 13). However, the present invention is not limited to the above embodiment, and can be carried out in various embodiments without departing from the gist thereof. Further, the plurality of components disclosed in the above-described embodiment can be appropriately modified. For example, one component of all the components shown in one embodiment may be added to another component of another embodiment, or some of the components of all the components shown in one embodiment. The element may be removed from the embodiment.

The drawings are schematically shown mainly for each component in order to facilitate the understanding of the invention, and the thickness, length, number, spacing, etc. of each of the illustrated components are convenient for drawing. It may be different from the actual one from the top. Further, the configuration of each component shown in the above embodiment is an example and is not particularly limited, and it goes without saying that various changes can be made without substantially deviating from the effect of the present invention. ..

For example, in the embodiment described with reference to FIGS. 1 to 13, the slave unit 10 and the meter 30 are connected by wire by the electric wire PL, but the slave unit 10 and the meter 30 may be wirelessly connected. Similarly, in the embodiment described with reference to FIGS. 1 to 13, the master unit 40 and the meter 30 are connected by wire by the electric wire PL, but the master unit 40 and the meter 30 may be wirelessly connected.

Further, in the embodiment described with reference to FIGS. 1 to 13, the meter 30 is connected to the master unit 40, but the meter 30 may not be connected to the master unit 40.

Further, in the embodiment described with reference to FIGS. 1 to 13, the master unit 40 is not installed within the range of the communication distance of the radio wave measurement terminal 20, but the range of the communication distance of the radio wave measurement terminal 20. The master unit 40 may be installed inside. In this case, the master unit 40 transmits the first response signal A1 like the slave unit 10, and transmits the second response request signal R2 like the slave unit 10.

Further, in the embodiment described with reference to FIGS. 1 to 13, the master unit 40 is not installed within the communication distance of the primary wireless communication terminal, but the communication distance of the primary wireless communication terminal. The master unit 40 may be installed within the range of. In this case, the master unit 40 transmits the second response signal A2 like the slave unit 10, and transmits the third response request signal R3 like the slave unit 10.

Further, in the embodiment described with reference to FIGS. 1 to 13, the master unit 40 is not installed within the communication distance of the secondary wireless communication terminal, but the communication distance of the secondary wireless communication terminal. The master unit 40 may be installed within the range of. In this case, the master unit 40 transmits the third response signal A3 in the same manner as the slave unit 10.

Further, in the embodiment described with reference to FIGS. 1 to 13, the radio wave measurement terminal 20 collects the 0th radio wave condition to the secondary radio wave condition, but the radio wave measurement terminal 20 is the primary. Similar to the radio wave condition and the second radio wave condition, the radio wave condition after the third radio wave condition may be collected.

Further, in the embodiment described with reference to FIGS. 1 to 13, the radio wave measuring device is the radio wave measuring terminal 20, but the radio wave measuring device is for radio wave measurement described with reference to FIGS. 1 to 13. As long as it is a wireless communication terminal capable of performing the same processing as the terminal 20, it is not particularly determined. The radio wave measuring device may be, for example, a slave unit 10 or a master unit 40.

The present invention provides a radio wave measuring device and has industrial applicability.

10: Slave unit 20: Radio wave measurement terminal 21: Control unit 22: Wireless communication unit 23: Storage unit A1: First response signal A2: Second response signal A3: Third response signal R1: First response request signal R2: 2nd response request signal R3: 3rd response request signal

Claims (3)

It is a radio wave measuring device that collects status information indicating the radio wave condition in the area where multiple wireless communication terminals are installed.
The plurality of wireless communication terminals include a primary wireless communication terminal and a secondary wireless communication terminal capable of wireless communication with each other.
The radio wave measuring device is
A wireless communication unit that performs wireless communication with the primary wireless communication terminal, and
A control unit for transmitting a control signal from the wireless communication unit to the primary wireless communication terminal is provided.
The control unit
A first response request signal indicating a response request is transmitted by a broadcast from the wireless communication unit.
The first response signal transmitted from the primary wireless communication terminal that received the first response request signal is acquired via the wireless communication unit.
The control signal is transmitted from the wireless communication unit to the primary wireless communication terminal specified from the first response signal.
The control signal includes a first control signal.
The first control signal was transmitted from the second wireless communication terminal that received the second response request signal by transmitting a second response request signal indicating a response request by broadcast from the primary wireless communication terminal. An instruction is shown to cause the primary wireless communication terminal to receive the second response signal, and to transmit data indicating the electric field strength value of the second response signal from the primary wireless communication terminal to the radio wave measuring device.
The control unit is a radio wave measuring device that collects the electric field strength value of the second response signal as the situation information. The wireless communication unit detects the electric field strength value of the first response signal and determines the electric field strength value.
The radio wave measuring device according to claim 1, wherein the control unit further collects the electric field strength value of the first response signal as the situation information. The plurality of wireless communication terminals further include a tertiary wireless communication terminal capable of wireless communication with the secondary wireless communication terminal.
The control signal includes a second control signal.
The control unit causes the wireless communication unit to transmit the second control signal to the primary wireless communication terminal.
The second control signal indicates an instruction to transmit a third control signal from the primary wireless communication terminal to the secondary wireless communication terminal.
The third control signal was transmitted from the third wireless communication terminal which received the third response request signal by transmitting the third response request signal indicating the response request by broadcast from the secondary wireless communication terminal. The third response signal is received by the secondary wireless communication terminal, and data indicating the electric field strength value of the third response signal is transmitted from the secondary wireless communication terminal via the primary wireless communication terminal. , Indicates an instruction to be transmitted to the radio wave measuring device.
The radio wave measuring device according to claim 1 or 2, wherein the control unit further collects the electric field strength value of the third response signal as the situation information.

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