JP4534145B2 - How to connect the master unit and slave unit - Google Patents

Description

  The present invention relates to a method for associating a parent device with a child device when the parent device is replaced in a monitoring system including a child device, a parent device, and a center device.

  For example, a remote monitoring system that monitors the amount of gas used or the temperature in a facility and notifies the center is widely used. These systems transmit a monitoring signal sensed by a slave unit with a sensor to the parent unit, and the monitoring device (monitoring PC) of the center device via a communication line or a network such as the Internet from the transmitter of the parent unit. And monitoring on the center device side.

  In this case, the slave unit is installed in the vicinity of, for example, a gas flow meter or a thermometer and constantly monitors them, and the detection information by the sensor is sent to the master unit together with its own ID periodically or according to a transmission request from the master unit. When the master unit receives the information from the slave unit under its management, the master unit transmits the information to the center device.

  As an example of such a remote monitoring system, a meter reading meter such as gas in each apartment is connected to a slave unit with an ID (identification) code, and a meter reading request and ID code are input at the time of meter reading, and the corresponding ID code There is known a system for transmitting meter reading data of a slave unit to the master unit (see Patent Document 1).

  In such a remote monitoring system, for example, a maximum of 200 slave units can be assigned to a single master unit. Therefore, in order to avoid interference and perform correct communication between the master unit and each slave unit, It is necessary to establish a communication channel between the parent and child by matching the ID code assigned to the child device and the ID code managed by the parent device. For this purpose, the ID code is mutually registered, that is, the relationship between the parent device and the child device. Work is essential.

In order to assemble such a master unit and a slave unit, conventionally, a slave unit is provided with a dip switch composed of a switch element for master unit registration and a plurality of switch elements for ID code and channel setting, The master unit is provided with a dip switch composed of a plurality of switch elements for registering the slave unit and a plurality of switch elements for setting the channel, and each dip switch is activated to perform the above-mentioned parent / child framing work. It was.
However, when using this dip switch element to perform the assembling process, it is not only necessary to operate each of the dip switch elements of the master unit and the slave unit, but the operation is performed manually. May occur, and there is a problem that time is required to perform accurate setting.

  In view of this, the present applicant first performs the process of assembling the master unit and the slave unit using a MAC (Media Access Control) address assigned at the time of manufacture of each device in place of the conventional ID code instead of the DIP switch. Proposed (see Patent Document 2).

In the framing process of the master unit and the slave unit using the MAC address, for example, the registration mode setting is input from the operation input unit of the master unit to notify each slave unit of the start of registration reception, and the slave unit is responded accordingly. Reads out its own MAC address from its address storage unit and transmits it to the master unit, and the master unit writes the MAC address transmitted from the slave unit into the address management table of its control unit, and then assigns its own MAC address to the slave unit. Send to. The slave unit stores the received MAC address of the master unit in the address storage unit.
After receiving the notification of the completion of the MAC address registration of the parent device from the child device, the parent device inputs information such as the child device ID, the child device type, and the installation location from the connected personal computer (PC), and ends the registration work. . Upon receiving the registration work completion notification from the parent machine, the child machine finishes its own registration work and all the matching processing work is completed.

In this framing process, since all operations can be performed on the parent device side, the framing process can be easily executed even when there are a large number of child devices, and the MAC address can be automatically registered.
However, in such a remote management system, if the master unit that becomes the center of the remote management system becomes unusable due to a failure, etc., the faulty master unit (old master unit) is replaced with a new master unit. When it is exchanged (called a new parent machine), the MAC address of the new parent machine is different from that of the old parent machine, so communication with the child machine is no longer possible.

  In that case, in order to allow the new parent device and the child device to communicate with each other, it is necessary to perform the reassembling process between the new parent device and the child device again. Therefore, in the past, after connecting a personal computer to the new master unit, the registration button attached to each slave unit is pressed, and each slave unit sends its own MAC address to the new master unit. Register each slave unit's MAC address and installation location information imported from the personal computer. The new master unit sends its own MAC address to the slave unit based on the registered slave unit's MAC address. It is memorized on the side of the slave unit and the matching process is performed.

However, since the slave units are usually arranged in a wide range and the number of connected units is large, this re-association processing work is not only complicated, but the slave units are usually in the premises of each house and it is not easy to approach There is a problem that it takes time and cost.
JP-A-8-249484 Japanese Patent Application No. 2004-29993

  The present invention has been made in view of the above-described conventional problems, and its purpose is to replace an old master unit with a new master unit in an existing remote monitoring system composed of a master unit and a plurality of slave units. In addition, the new master unit and the slave unit can be easily and reliably assembled.

The invention of claim 1 is a parent system in a monitoring system comprising a slave unit provided with a monitoring sensor, a master unit connected to be communicable with the slave unit, and a center device connected to be communicable with the master unit. This is a method for associating a master unit and a slave unit with the replacement of a machine, a step of storing the identification information of the old master unit and the slave unit in the new master unit, and the identification information of the old master unit in which the new master unit is stored And a step of transmitting the identification information of the own device to the child device using the identification information of the child device and a step of storing the identification information of the new parent device received by the child device.
According to a second aspect of the present invention, there is provided a monitoring system comprising: a slave unit including a monitoring sensor; a master unit that is communicably connected to the slave unit; and a center device that is communicably connected to the master unit. A method of associating a parent device and a child device with replacement of a device, the step of storing identification information of the old parent device and the child device in the information terminal device, and the old parent device and the child device stored in the information terminal device The identification information of the new parent device in the memory, the identification information of the old parent device and the identification information of the child device in which the new parent device is written, Storing the identification information of the new master device received by the device.
According to a third aspect of the present invention, there is provided a monitoring system comprising: a slave unit including a monitoring sensor; a master unit connected to be communicable with the slave unit; and a center device connected to be communicable with the master unit. A method of associating a master unit and a slave unit with the replacement of a machine, a step of storing identification information of the old master unit and the slave unit in the center unit, and a process of storing the old master unit and the slave unit from the center unit to the new master unit A process of transmitting identification information, a process of transmitting identification information of the old master unit and the slave unit received by the new master unit to the slave unit, and an identification information of the new master unit received by the slave unit And a step of storing.

(Function)
In a remote monitoring system consisting of a master unit, a slave unit, and a center unit, when the master unit is replaced, the identification information of the old master unit is added to the new master unit in order to link the replaced master unit and slave unit. Thus, communication between the new parent device and the child device is enabled, and the identification information of the own device is transmitted from the new parent device to the child device in that state. On the side of the slave unit, both the new and old master unit identification information may be stored, or the new master unit identification information may be overwritten on the old master unit identification information. Thereafter, the new master unit can communicate with the slave unit using the identification information.

  According to the present invention, in the remote monitoring system, when the master unit is replaced, the master unit or the center unit can perform the assembling operation between the master unit and the slave unit. Even so, re-association can be easily performed regardless of the installation position of the slave unit, and the inconvenience can be eliminated.

Embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a block diagram showing an embodiment of a remote monitoring system of the present invention.
As shown in the figure, this monitoring system is, for example, for each house of an apartment house, a slave unit 10 that detects the amount of gas used, a master unit 20 that manages these wireless slave units 10, and a communication with the master unit 20. It consists of a center device 30 connected via a line or the like.
The detection information of each child device collected by the parent device 20 is transmitted to the center device 30 together with the identification information (MAC address) of the child device 10 and monitored by being input to a monitoring server or the like installed in the center device. The

FIG. 2 is a block diagram showing a configuration of an embodiment of a meter reading terminal system including a master unit and a slave unit in the remote monitoring system of the present invention.
The slave unit 10 in this meter-reading system includes a communication interface (I / F) unit 11 that performs wireless communication with the master unit 20 and a control unit 12 that includes a processor. The control unit 12 includes an address registration unit 12a that performs a process of registering the MAC address of the parent device as a function implementation unit realized by a program. Further, the slave unit 10 has an address storage unit 13 for storing the registered MAC address of the master unit and its own MAC address 14.

  The parent device 20 includes a communication interface (I / F) unit 21 that performs wireless communication with the child device 10 and a control unit 22 that includes a processor. The control unit 22 includes an address registration unit 22a that performs a process of registering the MAC address of the slave unit as a function implementation unit realized by a program. Furthermore, the base unit 20 stores the registered MAC address of the base unit as an address management table 23a, and also includes an address storage unit 23 that stores its own MAC address 26, and a circuit unit that includes an LED and displays the operation state of the base unit. The display unit 24 includes a key switch, and an operation input unit 25 including a circuit unit that accepts various operation inputs and outputs them to the control unit 22. Although not shown in FIG. 2, the master unit 20 includes an external input / output terminal for connecting a personal computer (PC) for setting, and can input various information. Yes.

FIG. 3 is a block diagram schematically showing the configuration of the center device 30.
The center device 30 includes a control unit 31 that controls the entire device 30, a communication interface (I / F) unit 32 that communicates from the parent device 20 via a communication line, and monitoring information transmitted from the parent device 20. The storage unit 33 for storing, etc., the display unit 34, the operation input unit 35, etc., and the control unit 31 is an address for registering the MAC addresses of the parent device 20 and the child device 10 respectively. Registration means 31a is provided.

Next, the process of assembling the slave unit 10 and the master unit 20 described above will be described with reference to the process flowchart shown in FIG.
First, a description will be given of a first embodiment in which an association process is performed using an information terminal device, for example, a personal computer PC.
The personal computer PC is connected to the external input / output terminal of the old master unit 20, and the MAC address of the old master unit 20 and the MAC address of the slave unit 10 are read out from the address registration means 22a and stored ( S101). Subsequently, the personal computer PC and the new master device 20 are connected, and the MAC addresses of the old master device and the slave device are respectively written from the personal computer PC of the new master device 20 to the address registration means 22a (S102). A process of associating with the slave unit is performed (S103).
Subsequently, the new master unit communicates with the slave unit using the MAC addresses of the old master unit and the slave unit and transmits its own MAC address together with the registration request signal (S104). The slave unit 10 transmits a transmission signal from the master unit. In step S105, the MAC address of the new master unit is written in the address registration unit 12a. At this time, the two types of MAC addresses of the old and new parent devices are stored in each child device 100, or the MAC address of the new parent device is overwritten on the MAC address of the old parent device and deleted. Finally, all processing is completed by transmitting a completion signal to the parent device when the child device completes saving.

  In the first embodiment, when the parent device and the child device are assembled, all operations for the marriage can be performed by operating the personal computer PC at the installation location of the parent device. Regardless of this, the re-association process between the master unit and the slave unit can be easily performed.

Next, a second embodiment in which the margin processing is performed using the center device 30 will be described according to the processing flowchart shown in FIG.
The center device 30 stores the MAC address of the old master unit and the MAC address of the slave unit at the time of setting or normal (S201). When replacing the master unit, when the re-association process is instructed from the operation input unit 35, the control unit 31 extracts the MAC address of the old master unit and the MAC address of the slave unit from the storage unit 33 (S202). The extracted MAC address is transmitted to the new master unit (S203). When the new parent device receives the MAC address from the center device 30 (S204), the new parent device stores these and performs the process of associating the new parent device with the child device (S205), and then the MAC of the old parent device and the child device. Using the address, the MAC address of the new parent device is transmitted to the child device 10 together with the registration request signal (S206). The child device 10 stores the MAC address of the new parent device transmitted from the new parent device (S207). At that time, the slave unit stores two types of MAC addresses of the old and new master units or overwrites the MAC address of the old master unit with the MAC address of the new master unit and deletes it.
When the slave unit completes the storage, a completion signal is transmitted to the master unit, and the master unit further transmits a process completion signal together with the edge information to the center to complete all processing.

  In the case of this embodiment, it is necessary to read and store the MAC addresses of the parent device and the child device in advance in the center device. For example, if this is done when the monitoring system is first installed, Even if the master unit breaks down, the re-association process between the new master unit and the slave unit can be performed by the operation on the center unit side, which is convenient because it is not necessary to bring a personal computer to the base unit installation position.

It is a block diagram of one embodiment of a monitoring system concerning the present invention. It is a block diagram of the meter-reading terminal system which consists of a main | base station and a subunit | mobile_unit. It is a block diagram of a center apparatus. It is a flowchart of 1st Embodiment which shows the procedure of the edge group of a wireless subunit | mobile_unit and a main | base station. It is a flowchart of 2nd Embodiment which shows the procedure of the edge group of a wireless subunit | mobile_unit and a main | base station.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... cordless handset, 11 ... communication 1 / F part, 12 ... control part, 13 ... address storage part, 14 ... MCA address, 20-parent machine, 21 ... communication 1 / F unit, 22 ... control unit, 23 ... address storage unit, 24 ... display unit, 25 ... operation input unit, 26 ... MAC address, 30 ... center device, 31. ..Control part.

Claims (3)

A parent device accompanying replacement of a parent device in a monitoring system comprising a child device provided with a monitoring sensor, a parent device communicably connected to the child device, and a center device communicably connected to the parent device And a handset
Storing the identification information of the old master unit and the slave unit in the new master unit;
A process of transmitting the identification information of the old master unit stored in the new master unit and the identification information of the slave unit to the slave unit;
Storing the identification information of the new master unit received by the slave unit;
A method for associating a parent device and a child device with replacement of the parent device. A parent device accompanying replacement of a parent device in a monitoring system comprising a child device provided with a monitoring sensor, a parent device communicably connected to the child device, and a center device communicably connected to the parent device And a handset
Storing the identification information of the old master unit and the slave unit in the information terminal device;
Writing the identification information of the old parent device and the child device stored in the information terminal device into the memory of the new parent device;
A step of transmitting the identification information of the old parent device and the identification information of the child device to which the new parent device is written to the child device;
Storing the identification information of the new master unit received by the slave unit;
A method for associating a parent device and a child device with replacement of the parent device. A parent device associated with replacement of a parent device in a monitoring system comprising a child device having a monitoring sensor, a parent device communicably connected to the child device, and a center device communicably connected to the parent device And a handset
Storing the identification information of the old master unit and the slave unit in the center device;
A step of transmitting identification information of the old master unit and the slave unit from the center device to the new master unit;
Sending the identification information of the old master unit and the slave unit received by the new master unit to the slave unit;
Storing the identification information of the new master unit received by the slave unit;
A method for associating a master unit and a slave unit with replacement of the master unit.

Images