JP4728130B2 - Wireless telemeter system - Google Patents

Description

  The present invention relates to a radio telemeter system, and more particularly, to a specific low power radio telemeter system.

In general, in a wireless telemeter system, a wireless master unit (hereinafter referred to as a “base unit”) and each wireless slave unit (hereinafter referred to as a “slave unit”) exchange mutual unique information such as an identification code used for recognition of a communication partner. By performing the matching work, the wireless communication with the target station can be performed (see, for example, Patent Document 1). Conventionally, all necessary information such as edge information and various setting information set in the edge work has been stored in a memory unit fixed on the circuit board of the parent device or the child device.
JP 2005-348083 A

  However, in the conventional technology, a trouble such as a lightning strike occurs in the base unit or the slave unit of the wireless telemeter system, and a fault such as a circuit board of the master unit or a fault of the circuit board of the slave unit occurs. It may be necessary to replace parts such as a circuit board. In such a case, in order to recover the radio telemeter system, even if an attempt is made to read out necessary information from the failed master unit or slave unit, the circuit board does not operate and often cannot be read out.

  When the necessary information cannot be read from the parent device or the child device in this way, it is necessary to first restore the hardware by exchanging parts of the circuit board. After that, in order to restore the system, it is necessary to perform a new work for setting the master unit and the slave unit and setting work for various setting information for the master unit and the slave unit, which requires much time and labor.

  There is a measure to construct a backup system for the purpose of efficiently restoring the wireless telemeter system. The backup system temporarily backs up and stores necessary information of the parent device and the child device to an external device. When the system is restored, necessary information that has been backed up is restored from the backup system to the memory unit of the parent device or the child device, and the parent device and the child device are re-associated. As such a backup system, in order to collect all backup information of the terminal network control device managed by the center network control device via the telephone network, a large-scale communication device close to the same scale as the center network control device Is required. For this reason, a wireless telemeter system that requires a conventional backup system has not been widely adopted due to capital investment and complicated backup system operation.

  An object of the present invention is to provide a wireless telemeter system that does not require a backup system and can improve the efficiency of system restoration work and the maintenance management function of the system.

  In order to achieve the above object, a wireless telemeter system according to the present invention includes a terminal network control device connected to a center network control device via a telephone network, and a wireless master device wired to the terminal network control device. The master unit is a master unit having a control unit having a storage unit and a display unit for displaying an error, and a master unit as a wireless slave unit, having a control unit having a storage unit and a display unit for displaying an error A wireless telemeter system comprising the slave unit and a meter wired to the slave unit, wherein the master unit and the slave unit communicate with each other by wireless communication of a specific low power wireless system, and is detachable And an auxiliary memory unit which is a non-volatile storage unit, and the master unit and the slave unit each have a memory mounting unit to which the auxiliary memory unit can be mounted.

In wireless telemetry system of the present invention, upon adoption work is a work for exchanging the adoption information is unique information used to recognize the partner station in the wireless communication, the adoption information, the storage unit of the master unit And at least one of the storage units of the slave unit, the auxiliary memory unit mounted on the memory mounting unit of the master unit, and the auxiliary memory unit mounted on the memory mounting unit of the slave unit stored in at least one.

In the wireless telemeter system according to the present invention, setting information, which is information indicating an operation condition for periodically monitoring the meter , is stored in at least one of the storage unit of the master unit and the storage unit of the slave unit. At the same time, the data is stored in at least one of the auxiliary memory unit mounted on the memory mounting unit of the master unit and the auxiliary memory unit mounted on the memory mounting unit of the slave unit.

  In a preferred embodiment of the radio telemeter system according to the present invention, the master unit or the slave unit has presence confirmation means for confirming presence of the auxiliary memory unit by the control unit, and the auxiliary memory unit is stored in the memory. When operating in a state where it is removed from the mounting unit, the presence confirmation unit detects the absence of the auxiliary memory unit, performs an error display on the display unit, and controls not to perform the wireless communication. Can do.

  In a preferred embodiment of the wireless telemeter system of the present invention, the master unit and the slave unit periodically read the edge information and the setting information from the auxiliary memory unit, and the edge information or the setting information fluctuates. For example, the changed edge information or the changed setting information is used in preference to the edge information or the setting information stored in the storage unit of the parent device or the storage unit of the child device. Can work.

  In a preferred embodiment of the wireless telemeter system of the present invention, the auxiliary memory unit may have a setting means for setting a device identification code. In a preferred embodiment of the wireless telemeter system of the present invention, the master unit has a function of connecting to the auxiliary memory unit of the slave unit via an interface, and the auxiliary memory unit of the slave unit is connected to the master unit. When connected to the memory mounting part, the edge information of each other can be exchanged, and the edge information of each other can be written in the auxiliary memory part of each other.

  In a preferred embodiment of the radio telemeter system of the present invention, the master unit stores all or part of the setting information of the slave unit in the non-removable nonvolatile memory unit or the auxiliary memory unit, and the slave unit When the auxiliary memory unit of the machine is connected to the memory mounting unit of the parent machine, the setting information can be written into the auxiliary memory unit.

The wireless telemeter system of the present invention does not require a backup system, and can improve the efficiency of system restoration work and improve the maintenance management function of the system. In other words, by storing the edge information and setting information in the auxiliary memory, the edge information and setting information stored in the non-volatile memory of the parent device and the child device become unreadable and exchanged with a new parent device or child device. Even if it becomes necessary, by installing the auxiliary memory part taken out from the original master unit or slave unit to the new master unit or slave unit, it is possible to use the stored match information and setting information to The parent machine or the child machine can restore the edge without the edge work, and can restore the operation condition without setting the setting information again.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram showing an example of a radio telemeter system of the present invention. As shown in FIG. 1, the wireless telemeter system includes a center network control device 2, a terminal network control device 4, and a wireless master device (hereinafter referred to as a master device) connected to a host computer 1 (hereinafter abbreviated as a host). , 5 is indicated as main, and a plurality of wireless slave units (hereinafter referred to as slave units and indicated as sub in the drawing) 6 and a plurality of meters 7 are provided.

  The center network control device 2 is connected to a terminal network control device 4 via a telephone line 3 of the telephone network, and the terminal network control device 4 is connected to the parent device 5 by a wired line. The base unit 5 performs data communication with a plurality of slave units 6 by radio. Each meter 7 is connected to the slave unit 6, and these meters 7 are meters equipped with, for example, microcomputers for electricity, gas, and water. Although the number of sets of the meter 7 and the subunit | mobile_unit 6 is two or more, it is not specifically limited.

  FIG. 2A is a block diagram showing the configuration of base unit 5, and FIG. 2B is a block diagram showing the configuration of handset 6. As shown in FIG. 2A, the base unit 5 includes an antenna 10, a wireless communication unit 11, a CPU (control means) 12, a terminal network control unit (T-NCU) I / F (interface) 13, a ROM (read). (Only memory) 14, RAM (random access memory) 15, edge switch 16, battery 17, nonvolatile memory (1) 18, nonvolatile memory (2) 19, and display means 12B for displaying an error .

  As shown in FIG. 2B, the slave unit 6 includes an antenna 20, a wireless communication unit 21, a CPU (control means) 22, a meter sensor I / F (interface) 23, a ROM (read only memory) 24, a RAM ( Random access memory) 25, edge switch 26, battery 27, nonvolatile memory (1) 28, nonvolatile memory (2) 29, and display means 22B for displaying an error. The meter sensor I / F 23 is connected to the meter shown in FIG.

  A non-volatile memory (1) 18 of the base unit 5 shown in FIG. 2A is a storage unit that cannot be detached from the base unit 5. Similarly, the non-volatile memory (1) 28 of the slave unit 6 shown in FIG. 2B is a storage unit that cannot be detached from the slave unit 6. Both the non-volatile memory (2) 19 of the parent device 5 shown in FIG. 2A and the non-volatile memory (2) 29 of the child device 6 shown in FIG. It is. The non-volatile memory (2) 19 of the parent device 5 is a non-volatile storage means that can be attached to and detached from the memory attaching / detaching portion 12C of the parent device 5. Similarly, the non-volatile memory (2) 29 of the child device 6 is a non-volatile memory means that can be detached from the memory mounting portion 22C of the child device 6. The CPU 12 and CPU 22 have a clock and timer function.

The CPU 12, which is the control means of the base unit 5 shown in FIG. 2A, has an attendance confirmation means 12D for confirming whether or not the nonvolatile memory (2) 19 is present in the memory mounting portion 12C. . When the base unit 5 is operated with the nonvolatile memory (2) 19 removed from the memory mounting portion 12C, the presence confirmation means 12D detects the absence of the nonvolatile memory (2) 19, and the CPU 12 An operation error of the master unit 5 is displayed on the display unit 12B, and control is performed so that wireless communication is not performed between the master unit 5 and the slave unit 6. Similarly, the CPU 22, which is the control means of the slave unit 6 shown in FIG. 2B, has presence confirmation means 22D for confirming whether or not the nonvolatile memory (2) 29 is present in the memory mounting portion 22C. is doing. When the handset 6 is operated with the nonvolatile memory (2) 29 removed from the memory mounting portion 22C, the presence confirmation means 22D detects the absence of the nonvolatile memory (2) 29, and the CPU 22 An operation error of the slave unit 6 is displayed on the display means 22B, and control is performed so that wireless communication is not performed between the master unit 5 and the slave unit 6.

  The non-volatile memory (2) 19 which is an auxiliary memory unit of the parent device 5 has setting means for setting the identification code of the parent device 5, and the non-volatile memory (2) 29 of the child device 6 is a child device. Setting means for setting six identification codes.

  The CPU 12 of the parent device 5 shown in FIG. 2A has a function of connecting to the nonvolatile memory (2) 29 of the child device 6 shown in FIG. When the sexual memory (2) 29 is connected to the memory mounting portion 12C of the parent device 5 through the interface 80 and the CPU 12, the mutual information is exchanged between the parent device 5 and the child device 6, and the mutual assistance is provided. Mutual information can be written in the non-volatile memory (2) 19 and the non-volatile memory (2) 29 which are memory portions.

  The base unit 5 shown in FIG. 2A is a non-volatile memory (1) 18 that is a non-removable non-volatile memory unit or a non-volatile unit that is a non-removable non-volatile memory unit. Store in the memory (2) 19. When the nonvolatile memory (2) 29 of the child device 6 is connected to the memory mounting unit 12C of the parent device 5 via the interface 80, the setting information of the parent device 5 is stored in the nonvolatile memory (2) 29 of the child device 6. Can write.

  Here, the association information is unique information such as an identification code used for recognition of a communication partner in wireless communication. The setting information is information representing operating conditions such as a time and a period for periodically monitoring the meter 7 periodically. At the time of marriage work, which is work for exchanging marriage information that is unique information used for recognition of a communication partner in wireless communication, the marriage information is stored in a nonvolatile memory (1) 18 that is a storage unit of the parent device 5 and a child. It is stored in at least one of the non-volatile memory (1) 28 which is a storage unit of the machine 6, and the non-volatile memory (2) 19 mounted on the memory mounting unit 12C of the parent machine 5 and the memory mounting part of the child machine 6 It is stored in at least one of the non-volatile memories (2) 29 attached to 22C.

  The setting information, which is information indicating the operation conditions for periodically monitoring the meter 7 in FIG. 1, is stored in at least one of the nonvolatile memory (1) 18 of the parent device 5 and the nonvolatile memory (1) 28 of the child device 6. And is stored in at least one of the non-volatile memory (2) 19 mounted on the memory mounting portion 12C of the parent device 5 and the non-volatile memory (2) 29 mounted on the memory mounting portion 22C of the child device 6. The The parent device 5 and the child device 6 periodically read the edge information and setting information from the nonvolatile memory (2) 19 and the nonvolatile memory (2) 29, and when the edge information or setting information changes, the parent device 5. Newly changed edge information or new changed setting information in preference to the old edge information or old setting information stored in the non-volatile memory (1) 18 of 5 or the non-volatile memory (1) 28 of the slave unit 6. To work with.

  Here, as a premise for explaining the information management method by edge in the preferred embodiment of the present invention, the information management method by edge between the parent device 5 and the child device 6 will be described according to the edge sequence diagram of FIG. FIG. 4 shows an edge sequence for the edge work between the parent device 5 and the child device 6, and the edge switch 16 of the parent device 5 in FIG. 2A and the edge switch of the child device 6 in FIG. When 26 is pressed, the base unit 5 is in the edge reception mode. The subunit | mobile_unit 6 transmits the group information containing the identification code | cord | chord of the own station (sub: subunit 6) shown in FIG. 5 to the main | base station 5, and waits for a response for a fixed time. On the other hand, when the parent device 5 receives the edge information including the identification code of the child device 6, the parent device 5 returns the edge information including the identification code of the own station (main: parent device 5) in FIG. After that, the received association information of the slave unit 6 is registered as sub information (slave unit information) in the nonvolatile memory (1) 18 which is a storage unit. When receiving the response from the parent device 5, the child device 6 registers the edge information including the identification code of the parent device 5 as the main information (parent device information) in the nonvolatile memory (1) 28. And the above-mentioned series of edge work of the handset 6 ends. By performing the association work between the master unit 5 and the slave unit 6 as described above, it is determined at any time whether the transmission side identification code transmitted together with the electronic message matches the registered association information. Interference can be prevented, and stable wireless communication between the parent device 5 and the child device 6 is realized.

  The wireless header in FIG. 5 and the wireless header in FIG. 6 indicate signals such as bit synchronization and frame synchronization. The edge information shown in FIG. 5 includes a wireless header, an identification code of the local station (sub), and an edge request. The edge information shown in FIG. 6 includes a wireless header, an identification code of the own station (main), an edge response, and data.

  Here, looking at the actual operation site of the wireless telemeter system, the master unit 5 and the slave unit 6 are encountered in a number of cases where it is necessary to replace the master unit or the slave unit due to a failure caused by a lightning strike or the like. . At that time, in the normal method, even if it is attempted to read the association information from the parent device or the child device, it is often impossible to read the association information, and it is necessary to perform the association operation between the parent device and the child device again after the replacement work. In particular, in the case of replacement due to a failure of the master unit 5, there are cases where the master unit 5 and the hundreds of slave units 6 that have been associated with each other are re-assembled one by one, requiring a lot of time and labor. It will be said. For this reason, in some system operators, in order to avoid such re-association work, it is stored in the nonvolatile memory (1) (storage unit) 18 and the nonvolatile memory (1) (storage unit) 28. A dedicated backup system that backs up the association information to an external device via a wireless telemeter system may be introduced. However, since such a backup system is a large-scale communication device, it is difficult to widely adopt it because of the equipment investment and the complicated operation.

  Therefore, in a preferred embodiment of the present invention, the relationship information between the parent device 5 and the child device 6 is stored in the nonvolatile memory (2) (auxiliary memory unit) 19 of the parent device 5 or the nonvolatile memory (2) of the child device 6 ( Auxiliary memory unit) 29 is registered. Even if the parent device or the child device needs to be replaced, the registration information cannot be read from the main body, but this registration causes the memory mounting unit 12C in FIG. The memory section 19 is removed, or the nonvolatile memory (2) (auxiliary memory section) 29 is removed from the memory mounting section 22C of FIG. The stored information (edge information and setting information) or the memory information edge (edge information and setting information) in the nonvolatile memory (2) (auxiliary memory unit) 29 is read using a dedicated reader or the like. Thereby, necessary information can be easily read out.

  The reader here means a non-volatile memory (2) via an adapter to a portable PC (personal computer) used regularly by a facility engineer who installs and maintains a terminal network control unit (T-NCU). (Auxiliary memory unit) 19 or a non-volatile memory (2) (auxiliary memory unit) 29 is mounted, and the machine is a machine that reads out the stored margin information and setting information. Unlike the dedicated backup system, this dedicated reader in the embodiment of the present invention does not require the installation of equipment and is a procedure that can be carried out by equipment technicians without special training, so that the installation is extremely easy. There is the feature that it is.

  In the radio telemeter system, setting information indicating operation conditions such as time and period for periodically reading the meter 7 shown in FIG. 1 is registered as setting information of the individual slave unit 6. However, the setting information indicating the operating condition is normally a non-removable non-volatile memory (1) (storage unit) 18 that cannot be removed from the parent device 5 or a non-removable non-volatile memory that cannot be removed from the child device 6. (Storage unit) 28 is registered. Therefore, when replacing the slave unit 6, it is necessary to reset the setting information one by one, and it is difficult to perform a quick operation.

  In order to eliminate such inconvenience, in the embodiment of the wireless telemeter system of the present invention, various setting information including the match information and the setting information can be removed from the base unit 5 by a nonvolatile memory (2) (auxiliary memory). Part) 19, or a non-volatile memory (2) (auxiliary memory part) 29 detachable from the handset 6. Therefore, the nonvolatile memory (2) (auxiliary memory unit) 19 or the nonvolatile memory (2) (auxiliary memory unit) 29 is removed when necessary, and the content information is read by the above-described dedicated reader. There is a merit that you can.

  Next, the operation when the non-volatile memory (2) (auxiliary memory unit) 19 is removed from the parent device 5 or the non-volatile memory (2) (auxiliary memory unit) 29 is removed from the child device 6 An example will be described with reference to the flowchart of FIG. Here, the non-volatile memory (2) (auxiliary memory unit) 19 or the non-volatile memory (2) (auxiliary memory unit) 29 stores predetermined determination data at a predetermined address. For example, it is assumed that character data such as “IN” is stored. Therefore, in determining whether the non-volatile memory (2) (auxiliary memory unit) 19 is mounted on the memory mounting unit 12C or the non-volatile memory (2) (auxiliary memory unit) 29 is mounted on the memory mounting unit 22C, FIG. As shown in FIG. 5, data is read from a predetermined fixed address (step 600), and it is confirmed whether the read value of the data is “IN” (step 601).

  As shown in FIG. 3, when the read data is “IN”, the non-volatile memory (2) (auxiliary memory unit) 19 is mounted on the memory mounting unit 12C or the non-volatile memory (2). The presence processing (step 602) is performed assuming that the (auxiliary memory unit) 29 is mounted on the memory mounting unit 22C. On the other hand, when the read data is other than “IN” as shown in FIG. 3, the display unit 12 </ b> B or the display unit 22 </ b> B displays an error as an absence process, and the master unit 5 and the slave unit 6. Since a process for preventing malfunction is performed by not performing wireless transmission during communication, communication reliability can be improved. The method for confirming the presence of the nonvolatile memory (2) (auxiliary memory unit) 19 or the nonvolatile memory (2) (auxiliary memory unit) 29 is not limited to the above-described example.

  The CPU 12 or CPU 22 as the control means periodically checks the margin information and setting information registered in the nonvolatile memory (2) (auxiliary memory unit) 19 or the nonvolatile memory (2) (auxiliary memory unit) 29. If the control is performed so that the information content is updated as necessary, the non-volatile memory (2) (auxiliary memory unit) 19 or the non-volatile memory in which the association information and setting information are registered in another terminal network control device (2) When the (auxiliary memory unit) 29 is mounted, the nonvolatile information is given priority over the old information stored in the nonvolatile memory (2) (storage unit) 18 or the nonvolatile memory (2) (storage unit) 28. The new memory information and new setting information registered in the volatile memory (2) (auxiliary memory section) 19 or the non-volatile memory (2) (auxiliary memory section) 29 operate. Theft is possible.

  Therefore, if the parent device 5 or the child device 6 is replaced due to a problem such as a lightning strike, the non-volatile memory (auxiliary memory portion) 19 or the non-volatile memory (auxiliary memory portion) 29 used so far is replaced. By attaching to the subsequent master unit 5 or the slave unit 6, it is possible to easily restore the radio telemeter system without performing a resetting operation.

  In order to designate each terminal network control device 4 from the center network control device 2, an operation ID (identification code) that is an equipment ID (identification code) not related to an identification code or the like is provided in each slave unit 6. .

  Since the normal operation ID is determined by the DIPSW (dip switch) provided in the parent device 5 or the child device 6, in the embodiment of the present invention, the nonvolatile memory (2) (auxiliary memory unit) 19 or A structure in which a DIPSW for setting an operation ID (identification code) is provided for the nonvolatile memory (2) (auxiliary memory unit) 29 can be adopted. As a result, the operation ID, the association information, and the setting information can be exchanged together. In other words, even if a situation such as device replacement occurs due to lightning, etc., the non-volatile memory (2) (auxiliary memory unit) 19 or the non-volatile memory (2) (auxiliary memory unit) from the master unit 5 or the slave unit 6 before the replacement ) By moving and installing 29, there is no need for a new device setting change or re-association work, and even if the operation ID information, the non-volatile memory (2) (auxiliary memory unit) 19 or non-volatile The setting of DIPSW for setting in the memory (2) (auxiliary memory unit) 29 can be moved together with the edge information and the setting information at the same time, so that the restoration of the wireless telemeter system is further facilitated.

  Further, in the preferred embodiment of the wireless telemeter system of the present invention, as shown in FIG. 2, the nonvolatile memory (2) (auxiliary memory unit) 19 of the parent device 5 and the nonvolatile memory (2) (auxiliary memory) of the child device 6 The non-volatile memory (2) (auxiliary memory unit) 19 of the master unit 5 and the non-volatile memory (auxiliary memory unit) 29 of the slave unit 6 are connected by an interface for connecting the memory unit 29), and information is transmitted between them. By exchanging, if the master unit 5 and the slave unit 6 are operated so as to use the latest match information, the match information can be updated more quickly than the match work by wireless communication.

  Further, at this time, if setting information is written to the child device 6, setting information can be quickly set in the child device 6 as well, and an efficient operation method of the radio telemeter system can be provided.

  In a preferred embodiment of the wireless telemeter system of the present invention, the relationship information and the setting information are stored in the nonvolatile memory (2) 19 or the nonvolatile memory (2) 29 which is an auxiliary memory part that can be attached to and detached from the parent device 5 or the child device 6. Since it is registered, maintenance management of necessary information can be performed easily. In other words, the nonvolatile memory (2) 19 or the nonvolatile memory (2) 29 that can be attached to and detached from the parent device 5 or the child device 6 is set using the memory mounting portions 12C and 22C, respectively, so that the state of the device main body is affected. Therefore, it is possible to read necessary information.

  The parent device 5 or the child device 6 includes presence confirmation means 12D and 22D for knowing whether the nonvolatile memory (2) 19 or the nonvolatile memory (2) 29 is attached to the memory attachment portions 12C and 22C. If it is determined that the nonvolatile memory is not attached to the memory mounting portion, the display means 12B and 22B display an error indicating that the nonvolatile memory is not attached. Thereby, it is possible to suppress the occurrence of malfunction due to the detachable attachment of the nonvolatile memory (2) 19 or the nonvolatile memory (2) 29 which is the auxiliary memory unit.

  The parent device 5 and the child device 6 periodically read the edge information and the setting information from the nonvolatile memory, and when the edge information or the setting information changes, the information is stored in the storage unit of the parent device or the storage unit of the child device. It is possible to operate using the changed new set information or changed set information in preference to the set information or set information.

  The detachable auxiliary memory unit has setting means such as an ID setting DIPSW for setting the identification code of the device. As a result, even if various types of information are to be transferred for some reason, by replacing the non-volatile memory (2) 19 or the non-volatile memory (2) 29 with the new base unit 5 and the base unit 6, the association information and the setting information Since the operation ID can be transferred, system recovery can be performed efficiently.

  The parent device 5 has a function of connecting to the nonvolatile memory (2) 29 of the child device 6 via the interface 80, and the nonvolatile memory (2) 29 of the child device 6 is connected to the memory mounting portion 12C of the parent device 5. Can be exchanged between the parent device 5 and the child device 6, and the mutual information can be written to the nonvolatile memory (2) 19 or the nonvolatile memory (2) 29. .

  The base unit 5 stores all or part of the setting information of the handset 6 in the non-volatile memory (1) 18 or the removable non-volatile memory (2) 19 which is a non-removable storage unit of the base unit 5. Thus, when the nonvolatile memory (2) 29 of the child device 6 is connected to the memory mounting portion 12C of the parent device 5, the setting information can be written to the nonvolatile memory (2) 29. For this reason, since the association information and the operation setting information can be easily written to the nonvolatile memory (2) 19 and the nonvolatile memory (2) 29, management of the wireless telemeter system is facilitated.

  In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of the present invention.

1 is a system diagram of a wireless telemeter system according to an embodiment of the present invention. It is a block diagram of a main unit and a sub unit according to an embodiment of the present invention. It is a flowchart concerning embodiment of this invention. It is the edge sequence diagram of the edge work of the main | base station and a subunit | mobile_unit in the radio telemeter system used as a premise. It is a figure which shows the format of the match request message in FIG. It is a figure which shows the format of the match response message in FIG.

Explanation of symbols

1 Host 2 Center Network Controller 3 Telephone Line 4 Terminal Network Controller (T-NCU)
5 Master Unit 6 Slave Unit 7 Meter 10 Antenna 11 Wireless Communication Unit 12 CPU (Central Processing Unit)
12B Display means 12C Memory mounting unit 13 I / F (interface) for connection with terminal network control device
14 ROM (Read Only Memory)
15 RAM (Random Access Memory)
16 Relative switch 17 Battery 18 Non-removable nonvolatile memory (1) (storage unit)
19 Removable non-volatile memory (2) (auxiliary memory)
20 Antenna 21 Wireless Communication Unit 22 CPU (Central Processing Unit)
22B Display means 22C Memory mounting part 23 I / F (interface) for connection with meter and sensor
24 ROM (Read Only Memory)
25 RAM (Random Access Memory)
26 Relative switch 27 Battery 28 Non-removable nonvolatile memory (1) (storage unit)
29 Removable nonvolatile memory (2) (auxiliary memory)
80 interface

Claims (6)

A terminal network controller connected to the center network controller via a telephone network;
A master unit as a wireless master unit wired to the terminal network control device, the master unit having a control unit having a storage unit and a display unit for displaying an error in the operation of the master unit;
A wireless slave device subordinate to the wireless master device, the slave device having a control means having a storage unit and a display means for displaying an operation error of the slave device;
A meter wired to the slave unit, and
A wireless telemeter system that performs communication between the parent device and the child device by wireless communication of a specific low power wireless method,
Perform meter reading of the meter periodically by setting time and cycle,
The master unit and the slave unit has a memory attachment portion, the auxiliary memory unit is a removable non-volatile memory means mounted on the memory mounting portion,
At the time of marriage work that is work for exchanging marriage information that is unique information used for recognition of a communication partner in the wireless communication
The margin information is stored in at least one of the storage unit of the master unit and the storage unit of the slave unit, and the auxiliary memory unit and the slave unit mounted in the memory mounting unit of the master unit Stored in at least one of the auxiliary memory units mounted in the memory mounting unit,
Setting information, which is information indicating operation conditions such as time and period for periodically reading the meter, is stored in at least one of the storage unit of the master unit and the storage unit of the slave unit, and The wireless telemeter system is stored in at least one of the auxiliary memory unit mounted on the memory mounting unit of the machine and the auxiliary memory unit mounted on the memory mounting unit of the slave unit .   The master unit or the slave unit has a presence confirmation unit that confirms the presence of the auxiliary memory unit by the control unit, and when the auxiliary memory unit is operated with the auxiliary memory unit removed from the memory mounting unit The wireless telemeter according to claim 1, wherein the presence confirmation unit detects the absence of the auxiliary memory unit, displays an error on the display unit, and does not perform the wireless communication. system. The parent device and the child device periodically read the edge information and the setting information from the auxiliary memory unit, and when the edge information or the setting information fluctuates, the storage unit or the in preference to the adoption information or the setting information stored in the storage portion of the slave unit, according to claim 1 or, characterized in that operate using the variation to the adoption information or the variation and the setting information was radio telemetry system described in 2. 4. The radio telemeter system according to claim 3 , wherein the auxiliary memory unit includes setting means for setting an identification code of the device. The master unit has a function of connecting to the auxiliary memory unit of the slave unit via an interface, and when the auxiliary memory unit of the slave unit is connected to the memory mounting unit of the master unit, 5. The wireless telemeter system according to claim 4 , wherein the edge information is exchanged and the edge information is written in the auxiliary memory unit. The master unit stores all or a part of the setting information of the slave unit in the non-removable nonvolatile memory unit or the auxiliary memory unit, and the auxiliary memory unit of the slave unit is configured to store the master unit. 6. The wireless telemeter system according to claim 5 , wherein the setting information is written in the auxiliary memory unit when connected to a memory mounting unit.