JP2004021771A - Measuring device for radio telemeter system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a measuring device for radio telemeter system capable of not only confirming the communicating state of radio wave between a master machine and a slave machine, but also specifying a transmitter which transmits the radio wave, thereby improving the working efficiency in the adjustment for setting and inspection for maintenance of a radio telemeter system. <P>SOLUTION: The radio wave in the communication between the master machine 14 and the slave machine 15 in the radio telemeter system 1 is received by this measuring device 2 for radio telemeter system . The measuring device measures the field intensity of the received radio wave, and receives a radio telegram included in the radio wave followed by analysis, thereby determining the transmitter of the radio telegram, or whether the radio telegram is transmitted from the master machine or the slave machine. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is to remotely control a large number of meters for measuring usage of electricity, gas, water, and the like by radio, and to measure performance during installation and maintenance for a wireless telemeter system that performs centralized monitoring of meters. The present invention relates to a wireless telemeter system measuring device used for a mobile telephone.
[0002]
[Prior art]
Conventionally, this type of wireless telemeter system has a center-side device that centrally monitors a large number of meters for measuring the usage of electricity, gas, water, and the like, and the center-side device via a communication line such as a telephone line. A terminal network control device connected to the terminal network control device, a plurality of master units connected to the terminal network control device, a plurality of slave units communicating wirelessly with the master unit, and electricity, gas and water supply connected to the slave units. And a meter for measuring the usage amount. The slave unit and the meter are integrated and are known as a microcomputer meter.
[0003]
A plurality of master units are connected to the terminal network control device, and each of the master units is configured to be able to wirelessly communicate with a plurality of slave units in charge. That is, a plurality of master units are connected to one terminal network control device, and one master unit can wirelessly communicate with a plurality of predetermined slave units. The center-side device sends a meter reading request to a meter via a communication line, a terminal network control device, a master unit, a radio line using radio waves, and a slave unit. A measurement result from a meter can be obtained via a network control device and a communication line.
[0004]
[Problems to be solved by the invention]
By the way, when installing or maintaining the wireless telemeter system, it is particularly necessary to check the radio wave communication status between the master unit and the slave unit. Therefore, conventionally, when checking the communication status of radio waves between the master unit and the slave unit, the electric field strength of the radio wave at a predetermined frequency is measured using a spectrum analyzer, so that the communication between the master unit and the slave unit is checked. I was checking the situation.
[0005]
However, when a spectrum analyzer is used, it is possible to check whether or not a radio wave is transmitted at a predetermined frequency from a master unit or a slave unit and measure the electric field strength of the radio wave. Equipment and slave units) could not be identified.
[0006]
In a wireless telemeter system, for example, when adjusting the radio wave output of a master unit or a slave unit, it is not possible for a spectrum analyzer to specify the transmission source that is transmitting the radio wave, so it takes time and effort to specify the transmission source. It takes a lot of time, and it takes a lot of time and effort to find out which of the parent device and the child device has failed, even when the radio is not transmitted by either the parent device or the child device. Therefore, conventionally, the work efficiency of the adjustment at the time of installation of the wireless telemeter system and the inspection at the time of maintenance was inferior.
[0007]
The present invention has been made in order to solve the above-described problems, and it is possible to not only confirm the radio wave communication status between the master unit and the slave unit, but also specify the transmission source transmitting the radio wave, thereby It is another object of the present invention to provide a wireless telemeter system measuring device capable of improving work efficiency in adjustment at the time of installation of a wireless telemeter system and inspection during maintenance.
[0008]
[Means for Solving the Problems]
In order to solve such a problem, the present invention measures the electric field intensity of radio waves when communication is performed between a master unit and a slave unit in a wireless telemeter system, and measures the electric field intensity between the master unit and the slave unit. Whether the wireless message is transmitted from the master unit or the slave unit by receiving and analyzing the wireless message included in the radio wave communicated when the communication is performed in A wireless telemeter system measuring device provided with a processing circuit for determining the transmission source of the wireless telegram.
[0009]
According to the wireless telemeter system measuring device of the present invention, the base station in the wireless telemeter system receives radio waves when communication is performed between the master unit and the slave unit and measures the electric field strength of the radio waves. And the communication status of the radio wave between the slaves can be confirmed, and the radio message transmitted from the master unit by receiving and analyzing the radio message included in the radio wave, or from the slave unit Since the transmission source of the wireless message as to whether or not the transmission has been made is determined, the transmission source device can be specified.
[0010]
Therefore, the wireless telemeter system measuring device of the present invention can not only confirm the communication status of the radio wave between the master unit and the slave unit, but can also specify the source device transmitting the radio wave. Work efficiency in time adjustment and maintenance inspection is improved.
[0011]
Further, the present invention provides an electric field intensity measuring means for measuring the electric field intensity of a radio wave when communication is performed between the master unit and the slave unit in the wireless telemeter system, and between the master unit and the slave unit. Wireless message reading means for reading a wireless message communicated when communication is performed; and analyzing whether the wireless message has been transmitted from the master unit by analyzing the content of the read wireless message. A source determining unit that determines the source of the wireless message as to whether or not the source of the wireless message is transmitted from the source of the wireless message determined by the source strength determining unit and the electric field strength measured by the electric field strength measuring unit. Provided is a wireless telemeter system measuring device provided with a notifying unit for notifying.
[0012]
According to the wireless telemeter system measuring device of the present invention, the electric field strength of radio waves when communication is performed between the master unit and the slave units in the wireless telemeter system is measured by the electric field strength measuring means, and The included wireless message is read by the wireless message reading unit and analyzed by the transmission source determining unit to determine whether the message is transmitted from the master unit or the slave unit.
[0013]
Therefore, the wireless telemeter system measuring device of the present invention can not only confirm the communication status of the radio wave between the master unit and the slave unit, but can also specify the source device transmitting the radio wave. Work efficiency in time adjustment and maintenance inspection is improved.
[0014]
In the present invention, the wireless message includes a transmission ID which is an identifier indicating a transmitting device, a reception ID which is an identifier indicating a receiving device, and data including a message to be transmitted. The means determines the transmission source of the wireless message by analyzing the data and / or the transmission ID and the reception ID included in the wireless message, so that when there is radio wave communication between the master unit and the slave unit, It can be determined whether the transmission source of the radio wave is the master unit or the slave unit.
[0015]
In the present invention, the wireless message includes a transmission ID which is an identifier indicating a transmitting device, a reception ID which is an identifier indicating a receiving device, and data including a message to be transmitted. The means determines the transmission source of the radio message by analyzing data included in the radio message. Therefore, when radio waves are communicated between the master unit and the slave unit, the transmission source of the radio wave is determined by the master unit. It can be determined whether the device is the device or the child device.
[0016]
Further, the determination result is associated with the transmission ID and the reception ID and stored in the storage unit, and in the subsequent communication between the master unit and the slave unit, a wireless message including the already determined transmission ID and reception ID is received. In this case, when the transmission ID or the reception ID included in the wireless message is received, the determination as to whether the wireless message is transmitted from the master unit or the wireless message transmitted from the slave unit is stored in the storage unit. When a radio message including the already determined transmission ID or reception ID is received, the device of the transmission source can be specified before analyzing the data included in the radio message. It is possible to specify the transmission source device faster than analyzing the transmission ID, reception ID, and data included in the sentence and specifying the transmission source device of the radio message.
[0017]
Further, in the present invention, the notifying unit is configured to display, on a screen, an electric field intensity measured by the electric field intensity measuring unit and a device of a transmission source of the wireless message determined by the transmission source determining unit. Therefore, for example, it is preferable to display the electric field strength by a numerical value or a graph, and to display the transmission source device by a number or a graphic because the details of the electric field strength and the transmission source device can be confirmed on the screen. .
[0018]
In the present invention, the notifying unit displays the electric field intensity measured by the electric field intensity measuring unit and the transmission source of the radio message determined by the transmission source determining unit using a plurality of light emitting elements. Therefore, for example, if the electric field strength is displayed in a level using a plurality of light emitting elements, and each transmission source is displayed in correspondence with each light emitting element, the electric field strength and the transmission source can be simply configured. It is preferable because it can be confirmed.
[0019]
In the present invention, the notifying unit notifies the electric field intensity measured by the electric field intensity measuring unit and the transmission source of the radio message determined by the transmission source determining unit by a change in a sound generated from a voice generating unit. I did it. For example, if the pitch is changed according to the electric field strength, the electric field strength can be confirmed by sound, and if the sound is sounded while the radio message is being received, the radio message can be sounded. You can check the reception of the wireless message, and if the pitch or tone is changed between when the wireless message is sent from the master unit and when it is sent from the slave unit, the device that sent the wireless message can be checked. You can check the sound without looking at the display. Therefore, it is preferable because the trouble of viewing the display is eliminated.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram showing a configuration of a wireless telemeter system according to one embodiment of the present invention. The wireless telemeter system 1 includes a center device 11 for centrally monitoring a meter for measuring the usage of electricity, gas, water and the like, and a terminal connected to the center device 11 via a communication line 12 such as a telephone line. A network controller 13, a base unit 14 connected to the terminal network control unit 13, a slave unit 15 that wirelessly communicates with the base unit 14, and an amount of electricity, gas, water, and the like connected to the slave unit 15 Is provided.
[0021]
In addition, the wireless telemeter system measurement device 2 monitors wireless data communication between the master unit 14 and the slave unit 15 and measures the electric field intensity of radio waves during installation and maintenance of the wireless telemeter system 1. And a function that can identify the transmission source device that has transmitted the wireless message.
[0022]
In FIG. 1, one master unit is connected to the terminal network controller 13, but a plurality of master units can be connected to the terminal network controller 13. Also, one slave unit that communicates with the master unit 14 is shown, but a plurality of slave units can communicate with one master unit.
[0023]
FIG. 2 is a block diagram illustrating a configuration of the wireless telemeter system measurement device 2 according to the present embodiment. The wireless telemeter system measuring device 2 includes an antenna 21 for receiving a radio wave, a desired frequency signal out of the radio wave received by the antenna 21, converting the selected frequency signal into a digital signal, outputting the digital signal, and changing the voltage level of the desired frequency signal. A wireless communication unit 22 that outputs an electrical signal shown in FIG. 1 and an A / D (analog / digital) that converts an electrical signal (an analog signal having a voltage level corresponding to the electric field strength of a radio wave) output from the wireless communication unit 22 into a digital signal. ) A converter 23 is provided.
[0024]
The wireless telemeter system measuring device 2 includes a microcomputer (microcomputer) 24 as a processing circuit for controlling the entire device, a memory 25 for storing data necessary for processing of the microcomputer 24, and an operation signal to the microcomputer 24. A key input unit 26 for inputting data and data, a liquid crystal display unit 27 for displaying information processed by the microcomputer 24 and input information input from the key input unit 26 on the screen, and an LED drive signal output from the microcomputer 24. An LED display section 28 having a plurality of LEDs (light emitting diodes) to be displayed, and a buzzer 29 for generating a sound based on a buzzer drive signal output from the microcomputer 24 are provided.
[0025]
As a feature of the present embodiment, the microcomputer 24 includes an electric field intensity measurement unit that measures the electric field intensity of a radio wave when communication is performed between the master unit 14 and the slave unit 15 in the wireless telemeter system 1; A radio message reading means for reading a radio message included in a radio wave communicated when communication is performed between the base station and the slave unit 15; and analyzing the contents of the read radio message to determine whether the radio There is provided transmission source determining means for determining the transmission source of the radio message as to whether the transmission is from the wireless communication device 14 or from the slave device 15.
[0026]
FIG. 3 is a format diagram of a basic wireless message exchanged between the master unit 14 and the slave unit 15 in the present embodiment. As shown in FIG. 3, the wireless message basically includes a wireless header section 31 for setting a wireless header (head of the message), a transmission ID section 32 for setting a transmission ID (identifier of a transmission side device), and a reception section. It is configured to include a reception ID section 33 for setting an ID (identifier of a receiving device) and a data section 34 for setting a message and data to be transmitted.
[0027]
FIG. 4 is a sequence diagram illustrating a meter reading process of the wireless telemeter system 1 according to the present embodiment. Hereinafter, the meter reading process of the wireless telemeter system 1 and the measurement process of the wireless telemeter system measuring device 2 will be described with reference to this sequence diagram.
[0028]
The center-side device 11 transmits a meter reading request message to the terminal network control device 13 via the communication line 12 when it is desired to perform meter reading of the meter 16 such as electricity, gas or water. Upon receiving the meter reading request message, the terminal network control device 13 transmits the meter reading request message to the parent device 14. Then, upon receiving the meter reading request message, master device 14 wirelessly transmits a wireless message as described with reference to FIG. 3 to slave device 15. At this time, the wireless message transmitted from the base unit 14 to the slave unit 15 includes a wireless header set in the wireless header unit 31, a transmission ID set in the transmission ID unit 32 and indicating the transmission-side base unit 14 itself, The reception ID is set in the reception ID section 33 and indicates the reception-side slave unit 15 itself to which the meter 16 to be subjected to meter reading is connected, and data set in the data section 34 and including a meter reading request message.
[0029]
Next, the handset 15 receives the radio message from the base unit 14, checks the reception ID included in the radio message, and if the ID matches the ID given to itself, determines that the radio message has been received. A radio message for returning to the device 14 is wirelessly transmitted to the master device 14 and a meter reading request message is transmitted to the meter 16. At this time, the wireless message transmitted from the slave unit 15 to the master unit 14 includes a wireless header set in the wireless header unit 31, a transmission ID set in the transmission ID unit 32 indicating the slave unit 15 itself on the transmission side, It includes a reception ID set in the reception ID unit 33 and indicating the parent device 14 itself on the receiving side, and data including an ACK (acknowledgment character) set in the data unit 34 and indicating that a radio message has been received from the parent device 14. It is configured.
[0030]
When the meter 16 receives the meter reading request message from the slave unit 15, the meter 16 includes the current pointer value in the meter reading response message and transmits it to the slave unit 15. Receiving the meter reading response message from meter 16, slave unit 15 wirelessly transmits a wireless message to base unit 14. At this time, the wireless message transmitted from the slave unit 15 to the master unit 14 includes a wireless header set in the wireless header unit 31, a transmission ID set in the transmission ID unit 32 indicating the slave unit 15 itself on the transmission side, It is configured to include a reception ID set in the reception ID section 33 and indicating the parent device 14 itself on the receiving side, and data set in the data section 34 and including a meter reading response message.
[0031]
The base unit 14 that has received the wireless message from the slave unit 15 checks the reception ID included in the wireless message, and when the reception ID matches the ID given to the base unit 14 itself, has received the wireless message. Is transmitted to the slave unit 15 and a meter reading response message is transmitted to the terminal network control device 13. At this time, the wireless message transmitted from the base unit 14 to the slave unit 15 includes a wireless header set in the wireless header unit 31, a transmission ID set in the transmission ID unit 32 and indicating the transmission-side base unit 14 itself, It includes a reception ID set in the reception ID section 33 and indicating the slave 15 itself on the receiving side, and data including an ACK (acknowledgment character) set in the data section 34 and indicating that a wireless message has been received from the slave 15. It is configured.
[0032]
Upon receiving the meter reading response message from the parent device 14, the terminal network control device 13 transmits the meter reading response message to the center device 11. The center-side device 11 that has received the meter reading response message can calculate the usage fee of electricity, gas, water, or the like by obtaining the meter reading value from the meter reading response message.
[0033]
The wireless telemeter system measurement device 2 monitors communication of a wireless message between the master unit 14 and the slave unit 15. Here, when a radio message including the meter reading request message in the data is transmitted from the base unit 14 to the slave unit 15, a radio wave including the radio message is received by the antenna 21 and given to the radio communication unit 22 as an electric signal. The wireless communication unit 22 supplies the A / D converter 23 with the electric signal in order to convert the voltage level of the electric signal provided from the antenna 21 (voltage level corresponding to the electric field strength of the received radio wave) into a digital signal. The A / D converter 23 converts an analog electric signal provided from the wireless communication unit 22 into a digital signal, and supplies the digital signal to the microcomputer 24.
[0034]
The microcomputer 24 processes the digital signal from the A / D converter 23 and displays the electric field strength level of the received radio wave on the liquid crystal display 27 as a numerical value, a graph, or the like, or an LED display 28 for a level meter. Or level display. Further, the microcomputer 24 inputs the radio message converted into the digital signal by the radio communication unit 22, and identifies the transmission ID included in the radio message. In this example, since it was the master 14 that transmitted the meter reading request message included in the wireless message, the transmission ID in the wireless message indicates the master 14, and therefore, the microcomputer 24 transmitted the meter reading request message. Recognizes that it is the master unit 14, and causes the liquid crystal display unit 27 or the LED display unit 28 to display an indication that the meter reading request message has been transmitted from the master unit 14.
[0035]
By the way, by storing the result of determining the device that has transmitted the wireless message in the memory 25 based on the wireless message including the transmission ID, the reception ID, and the data, the same transmission ID or It can be determined that the radio message including the reception ID is the radio message transmitted by base unit 14.
[0036]
The transmission ID in the radio message transmitted by the slave 15 communicating with the master 14 is the same as the reception ID in the radio message from the master 14, and the reception ID in the radio message transmitted by the slave 15 is the parent ID. Since the transmission ID in the radio message from the base unit 14 is the same as the transmission ID, the radio ID including the transmission ID in the radio message from the base unit 14 in the reception ID and also including the reception ID in the radio message from the base unit 14 in the transmission ID is: It is possible to determine that the wireless message has been transmitted by the handset 15, and it is possible to identify the device that transmitted the message when the transmission ID or the reception ID was received before analyzing the data included in the wireless message.
[0037]
As described above, the ACK message for the meter reading request message from the base unit 14 is based on the transmission of the slave unit 15, the meter reading response message is based on the transmission of the slave unit 15, and the ACK for the meter reading response message from the slave unit 15. It can be determined from the transmission ID and the reception ID that the electronic message is transmitted by the master unit 14.
[0038]
By the above-described operation, the device that has transmitted the radio message and the electric field strength of the radio wave of the radio message can be displayed on the liquid crystal display unit 27 and / or the LED display unit 28. For example, if the electric field strength is displayed as a numerical value or a graph on the liquid crystal display unit 27, and the source device is displayed as a number or graphic, the details of the electric field intensity and the source device can be confirmed on the screen. it can. In addition, if the electric field intensity is displayed as a level using a plurality of light emitting elements of the LED display unit 28 and each transmission source is displayed in correspondence with each light emitting element, the electric field intensity can be simplified with a simple configuration. And the sender can be checked.
[0039]
If the buzzer 29 changes the pitch generated according to the electric field strength, the electric field strength can be confirmed by sound, and the sound can be sounded while the radio message is being received. The reception of the wireless message can be confirmed by sound, and if the pitch or tone is changed between when the wireless message is sent from the master unit and when it is sent from the slave unit, the source of the wireless message can be confirmed. Even if you do not look at the display to check the device, you can check it by sound. Therefore, if the buzzer 29 is used, the state of communication between the master unit 14 and the slave unit 15 can be confirmed by sound without looking at the display of the liquid crystal display unit 27 or the LED display unit 28. Eliminate the hassle of seeing. Note that the buzzer referred to here conceptually includes a speaker.
[0040]
According to the wireless telemeter system measurement device 2 according to the embodiment described above, the radio wave at the time of communication between the master unit 14 and the slave unit 15 in the wireless telemeter system 1 is received, and the electric field strength of the radio wave is reduced. Since the measurement is performed, the communication status of the radio wave between the base unit 14 and the slave unit 15 can be confirmed, and the radio message transmitted from the base unit 14 is obtained by receiving and analyzing the radio message included in the radio wave. Or the transmission source of the wireless message as to whether the transmission is from the slave unit 15 or not, it is possible to specify the transmission source device.
[0041]
Therefore, the wireless telemeter system measurement device 2 of the present embodiment can not only confirm the radio wave communication status between the master unit 14 and the slave unit 15 but also specify the transmission source device transmitting the radio wave. It is possible to improve work efficiency in adjustment at the time of installation of the telemeter system 1 and inspection at the time of maintenance.
[0042]
【The invention's effect】
As described above, according to the wireless telemeter system measurement device of the present invention, the wireless telemeter system measures the electric field strength of radio waves when communication is performed between the master unit and the slave unit, and the master unit and the master unit By receiving and analyzing a radio message included in a radio wave communicated when communication is performed with the slave unit, the radio message is transmitted from the master unit or transmitted from the slave unit. Equipped with a processing circuit that determines the transmission source of the radio message as to whether or not it is possible to confirm the status of radio wave communication between the master unit and the slave unit, as well as identify the device that is transmitting the radio wave, Thereby, the work efficiency in the adjustment at the time of installation of the wireless telemeter system and the inspection at the time of maintenance is improved.
[0043]
Further, according to the wireless telemeter system measuring device of the present invention, in the wireless telemeter system, electric field intensity measuring means for measuring the electric field intensity of a radio wave when communication is performed between the master unit and the slave unit; And a wireless message reading means for reading a wireless message to be communicated when communication is performed between the slave device and the slave device. Source determination means for determining the transmission source of the wireless message as to whether the wireless message is transmitted or transmitted from the slave unit, and the electric field strength measured by the electric field strength measurement means and the transmission source determination means Notifying means for notifying the transmission source of the transmitted radio message, so that not only can the radio communication status between the master unit and the slave unit be confirmed, but also the device transmitting the radio wave can be specified, thereby Work efficiency at the time of installation of the adjustment and maintenance at the time of inspection of a wireless telemetry system can be improved.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a wireless telemeter system according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a configuration of a wireless telemeter system measurement device according to one embodiment of the present invention.
FIG. 3 is a format diagram of a wireless message according to an embodiment of the present invention.
FIG. 4 is a sequence diagram illustrating a meter reading process of the wireless telemeter system according to the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Wireless telemeter system, 2 ... Wireless telemeter system measuring device, 11 ... Center-side device, 12 ... Communication line, 14 ... Master device, 15 ... Slave device, 16 ... · Meter, 24 · · · microcomputer (electric field strength measurement means, wireless message reading means, transmission source determination means), 25 · · · memory (storage means), 27 · · · liquid crystal display (notification means), 28 · · · · -LED display part (notification means), 29 ... buzzer (notification means).

Claims (7)

The meter configured to wirelessly communicate between a master unit connected via a communication line to a center-side device that performs centralized monitoring and a slave unit connected to a meter that measures a predetermined measurement target, A measurement device for measuring the performance of a wireless telemeter system configured to transmit the measurement result from the slave unit to the master unit and to transmit the measurement result from the master unit to the center device via the communication line. Measuring the electric field strength of radio waves when communication is performed between the master unit and the slave unit, and the radio waves communicated when communication is performed between the master unit and the slave unit. A processing circuit for determining the transmission source of the radio message whether the radio message is transmitted from the master unit or the slave unit by receiving and analyzing the radio message included in Radio characterized by comprising Les meter system measuring device. The meter configured to wirelessly communicate between a master unit connected via a communication line to a center-side device that performs centralized monitoring and a slave unit connected to a meter that measures a predetermined measurement target, A measurement device for measuring the performance of a wireless telemeter system configured to transmit the measurement result from the slave unit to the master unit and to transmit the measurement result from the master unit to the center device via the communication line. The electric field strength measuring means for measuring the electric field strength of the radio wave when the communication is performed between the master unit and the slave unit, and the communication is performed between the master unit and the slave unit. A radio message reading means for reading a radio message included in the radio wave communicated at the time, and analyzing the content of the read radio message to determine whether the radio message has been transmitted from the master unit or from the slave unit. Was sent Source determining means for determining the source of the wireless message, and notifying means for notifying the electric field strength measured by the electric field strength measuring means and the source of the wireless message determined by the source determining means. A wireless telemeter system measuring device, characterized in that: The wireless message includes a transmission ID, which is an identifier indicating a transmitting device, a reception ID, which is an identifier indicating a receiving device, and data including a message to be transmitted. The wireless telemeter system measuring apparatus according to claim 2, wherein the transmission source of the wireless telegram is determined by analyzing the data and / or the transmission ID and the reception ID included in the data. The wireless message includes a transmission ID, which is an identifier indicating a transmitting device, a reception ID, which is an identifier indicating a receiving device, and data including a message to be transmitted. By analyzing the data included in the data, the transmission source of the wireless message is determined, and the determination result is stored in the storage unit in association with the transmission ID and the reception ID. In the communication, when a wireless message including the transmission ID or the reception ID already determined is received, when the transmission ID or the reception ID included in the wireless message is received, the wireless message transmitted from the master unit is received. 3. The wireless telemeter system measuring device according to claim 2, wherein the determination as to whether the message is a wireless message transmitted from the slave unit is performed based on a result of the determination stored in the storage unit. The wireless telemeter system according to claim 2, wherein the notifying unit displays on a screen the electric field intensity measured by the electric field intensity measuring unit and the transmission source of the radio message determined by the transmission source determining unit. measuring device. The said notification means displays the electric field intensity measured by the said electric field intensity measurement means and the transmission source of the radio | wireless message determined by the transmission source determination means with a several light emitting element, The Claims characterized by the above-mentioned. Wireless telemeter system measuring device. The notifying unit notifies the electric field intensity measured by the electric field intensity measuring unit and the transmission source of the radio message determined by the transmission source determining unit by a change in a sound generated from a sound generating unit. The wireless telemeter system measuring device according to claim 2.

Images