JP4688730B2 - Control panel maintenance system - Google Patents

Description

  The present invention relates to a maintenance system for a control panel on which an electronic board is mounted, and more particularly to a technique for maintenance using RFID (Radio Frequency Identification).

  Conventionally, a control panel on which a plurality of electronic boards are mounted to control devices and various systems is mounted by mounting the electronic board on the board mounting portion of the control board at the time of manufacture at the factory. . The electronic board is, for example, a board on which various circuits such as a controller that performs control calculation and an input / output device that performs signal processing are assembled.

  When manufacturing such a control panel, an electronic board mounted on the control panel is mounted at a position indicated by a pre-designed mounting diagram at the time of assembly in a factory. Although it is necessary to check whether or not the mounting is correct, conventionally, this checking operation has been performed visually by an operator while comparing the mounting diagram of paper with the actual product.

In Patent Document 1, a wireless IC tag storing substrate information and the like is provided on a substrate attached to an elevator control panel, and communication is performed between the wireless IC tag and a transmission / reception unit attached to the control panel. There is a description about reading out.
JP 2005-112480 A

  Conventionally, the work of checking a plurality of electronic boards mounted on the control panel is a work of manually checking, and there is a problem that it takes time and effort. In particular, in the case of a control panel for a large-scale system, there is a problem that the number of electronic boards to be mounted is enormous, and it takes a lot of man-hours to check whether the board is correctly mounted.

  Patent Document 1 describes a technique of reading information on a substrate attached to a control panel using a wireless IC tag. By applying the technique described in Patent Document 1, it can be determined whether or not at least a necessary board is mounted on the control panel. However, an actual control panel often has a large number of boards to be mounted, and as a check work, it is necessary to check whether a necessary board is mounted at a required position. In the check using tags, it was difficult to check in detail up to such mounting position.

  The present invention has been made in view of the above points, and an object thereof is to make it possible to quickly and easily check the mounting of an electronic board mounted on a control panel.

In order to solve the above-mentioned problem, the present invention reads information on the identification number of the RFID attached to the electronic board mounted in the slot from a plurality of readers installed on the control panel, and in each of the plurality of readers arranged, The arrival time of the radio wave from the RFID is determined, the slot position where the electronic board is mounted is identified by multipoint surveying from the arrival time information of the determined readers, and the identification number of the RFID that identifies the slot position The maintenance tool database and mounting diagram information are collated in the maintenance tool to determine whether the electronic board of the type specified at the location specified in the mounting diagram is correctly mounted in the control panel slot. The determination result is displayed on the monitor of the maintenance tool.

  According to the present invention, the RFID identification number and position information attached to the electronic board is read from a reader installed on the control panel, the RFID identification number and position information read from the reader, and the information in the maintenance tool It is possible to determine whether or not the specified type of electronic board is mounted on the control panel at the specified position and display the determination result, so it can be mounted on the control panel even in a large-scale system The electronic substrate mounting check operation can be performed quickly and accurately.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a configuration diagram of the entire system according to an embodiment of the present invention. In this example, it is a system for maintaining and managing the control panel using RFID. The system configuration will be described. The system includes a control panel 2 in which equipment such as a controller for controlling plant equipment is built, and a maintenance tool 1 for maintaining the controller is connected to the control panel 2 via a network 6. Yes.

  Inside the control panel 2, there are an electronic board 31 configured as a controller for executing control calculations, and a plurality of electronic boards 32a having various functions such as signal input processing from plant equipment and signal output processing to plant equipment. The unit 3 on which .about.32d is mounted is incorporated. In the following description, the electronic substrate 31 may be referred to as the controller 31. The electronic board 31 and the electronic boards 32a to 32d can be mounted, for example, in a slot prepared in the unit 3, and an operation of mounting (mounting) on the unit 3 is performed when the control panel 2 is manufactured.

  The controller 31 includes a transmission device 33. The controller 31 and each of the electronic boards 32a to 32d are attached with RFIDs 4 that record information such as the type of the electronic board and wirelessly communicate with a reader (to be described later) to transmit the recorded information. Further, a door 2a is attached to the front surface of the control panel 2 by a hinge 2b so as to be opened and closed. When the door 2a is closed, the unit 3 on which the electronic board 31 and the electronic boards 32a to 32d are mounted is attached to the door 2a. It is as composition to cover.

  On the back surface of the door 2a of the control panel 2, a plurality of readers 5 for reading information recorded on the RFID 4 are installed. In the case of the example in FIG. 1, readers 5 are installed at the four corners of the back surface of the door 2a. Each reader 5 is connected to a transmission device 33 in the controller 31, and information read by the reader 5 can be transmitted to the outside via the transmission device 33. Further, in the processing unit (maintenance tool 1 side or the controller 31 or the like) that determines the signal received by each reader 5 of this example, the arrival time of the signal from each RFID 4 is determined, and the RFID 4 is determined from the determined arrival time. It is the structure which judges the installation position of. Here, an example in which the reader 5 is attached to the door 2a of the control panel 2 will be described, but it can also be attached to another place. Further, the number of control panels 2, units 3, controllers 31, electronic boards 32, and the like installed varies depending on the scale of the plant. In addition, the control panel 2 includes a power supply device for supplying power to the controller 31, the electronic board 32, and the like, and a relay, an indicator lamp, and a switch that constitute an interlock circuit.

  The maintenance tool 1 includes a central processing unit 11, a storage device 12, a transmission device 13, and a monitor 14. Information read by the reader 5 and transmitted from the transmission device 33 is received by the transmission device 13 and sent to the central processing unit 11. In the central processing unit 11, the sent information is judged and collation processing with the information stored in the storage device 12 is performed. Specific processing will be described later. In the central processing unit 11, the arrangement position of the RFID 4 in the unit 3 (that is, the mounting position of the electronic board 31 and the electronic boards 32a to 32d) determined by the controller 31 is also used for verification. The storage device 12 stores a database related to an electronic board and a mounting diagram. Although not shown, the maintenance tool 1 also includes devices such as a keyboard and a mouse. The maintenance tool 1 and the control panel 2 are connected to each other via a network by transmission devices 13 and 33.

Next, functions and operations of each device will be described.
First, devices built in the control panel 2 will be described. The electronic boards 32a to 32d have various types for each function such as an analog input for input processing of an electrical signal from a thermometer or a pressure gauge and a digital input for input processing of a relay contact signal. How many are used depends on the control target and plant scale. A signal processed by each electronic board 32 is input to the controller 31. The controller 31 performs arithmetic processing based on the input signal and the stored program, and outputs the calculation result to a plant device such as a valve or other control device via the electronic substrate 32 to control the plant.

  Further, data in the controller 31 is transmitted / received to / from the maintenance tool 1 and other devices (not shown) via the transmission device 33 and the network 6. A unique identification number is recorded on the RFID 4 attached to the controller 31 and the electronic substrate 32, and the reader 5 can read information recorded on the RFID 4 by radio waves. Furthermore, each reader 5 can also obtain information on the arrival time of radio waves (position detection information) with respect to a specific RFID 4. Information obtained by the reader 5 is transmitted to the maintenance tool 1 via the transmission device 33 and the network 6. The maintenance tool 1 transmits / receives data to / from the outside via the transmission device 13 and the network 6.

  Programs and data are stored in the storage device 12 in the maintenance tool 1, and the central processing unit 11 performs processing based on the programs and data, and displays calculation results and data on the monitor 14. The central processing unit 11 performs processing according to a program based on signals from input devices such as a keyboard and a mouse. The maintenance tool 1 has functions such as a controller maintenance function such as creation and downloading of a program stored in the controller 31, a monitor function for monitoring data of the controller 31, and a data recording function for saving data of the controller 31.

  In addition to these general functions, the maintenance tool 1 stores data of mounting information (referred to as a mounting diagram) of the controller 31 and the electronic board 32 stored in the control panel 2, and the storage device 12 stores the data. The mounting diagram can be displayed on the monitor 14. Further, from the arrival time information of a radio wave sent to a specific RFID 4 sent from a plurality of readers 5 in the control panel 2, it is possible to specify in which slot of which unit the RFID 4 is located by multipoint surveying. . Further, a database in which the identification number of each RFID 4 and information such as the model, revision, date of manufacture, and mounting position of the controller 31 or electronic board 32 to which the RFID 4 is attached is stored in the storage device 12, and the database Information can be displayed on the monitor 14 by an operator request or the like. An example of the contents of the database is shown in the database 7 of FIG.

Next, an example of maintenance management processing according to the present embodiment will be described.
The electronic board 31 and the electronic boards 32a to 32d are mounted at positions designated by a pre-designed mounting diagram when the control panel 2 is assembled at the factory. Here, in the case of a large-scale system, the number of electronic boards becomes enormous, and the work of checking whether or not the electronic board is correctly mounted also requires a great number of man-hours. The present embodiment reduces man-hours by automating this mounting check work.

  FIG. 2 shows a flowchart of the electronic board mounting management process. First, when each electronic board 31, 32a to 32d is manufactured, the RFID 4 is pasted (step S11). Then, the model, revision, and date of manufacture of the electronic substrate are registered in the database 7 of the identification number of the RFID 4 (step S12). This registration operation can be performed directly by the maintenance tool 1 or can be performed by other equipment and data can be moved to the maintenance tool 1 separately. In addition to these operations, the system designer designs the control panel 2 and creates a mounting diagram showing where to mount which type of electronic board (step S13). This mounting diagram is stored in the maintenance tool 1 as electronic data. Then, the assembly operation of the control panel 2 is carried out while viewing the mounting diagram on paper or the monitor 14 (step S14). Next, it is checked whether or not the electronic board is correctly mounted on the control panel 2 in accordance with the instruction of the mounting diagram (step S15), and the mounting position of the board is registered in the database (step S16).

  Next, the details of this check operation will be described with reference to the mounting diagram shown in FIG. First, the mounting diagram is displayed on the monitor 14 by the operation of the maintenance tool 1 (mounting diagram screen 8 in FIG. 5), and the check start operation is performed (step S21: the check start button 81 in FIG. 5 is pressed). By this operation, the maintenance tool 1 acquires the mounting position of the electronic board to which the RFID 4 is attached based on the RFID 4 position detection information from the reader 5 of the check target control panel 2 (step S22). The maintenance tool 1 collates the obtained mounting position information and mounting diagram information (model and mounting position) with reference to the database 7 using the RFID recognition number as a key (step S23). Then, the collation result is displayed on the mounting diagram screen 8 displayed on the monitor 14 (step S24).

  As the display state on the monitor 14, for example, as shown in FIG. 5, if the correct type of electronic board is mounted at the correct position, the corresponding electronic board on the electronic board mounting display area 82 is displayed in green, If it is mounted, the corresponding electronic board is displayed in red. And about the electronic board mounted correctly, the mounting position data acquired in the mounting position information of the pertinent recognition number of the database 7 are reflected.

  As described above, in this embodiment, the RFID identification number and position information attached to the electronic board are read from the reader installed on the control panel, the RFID identification number and position information read from the reader, and the maintenance tool The maintenance tool checks the database and mounting diagram information in the product to determine whether the specified type of electronic board is mounted on the control panel, and the determination result is the maintenance tool. Therefore, even in a large-scale system, it is possible to quickly check the mounting of the electronic board mounted on the control panel. In particular, since it is collated with the mounting drawing including the mounting position of the electronic substrate, an accurate determination is possible. In the example of FIG. 1, there is an example in which five boards are configured. However, in practice, the control board can be applied to a control board on which a larger number of boards are mounted. By applying it to maintenance management, it is more effective.

  In the above-described embodiment, the RFID to be used is configured to record information in advance and read the recorded information with a reader attached to the control panel. However, a reader capable of recording (writing) information as a reader. -It may be configured as a writer so that information used for maintenance and management can be recorded on an RFID attached to each substrate.

It is the whole block diagram which showed the example of a structure of the control panel maintenance system using RFID in one embodiment of this invention. It is a flowchart of the electronic substrate mounting management method of this invention. It is a flowchart of the electronic substrate mounting check work of this invention. It is explanatory drawing which shows the electronic substrate database example of this invention. It is explanatory drawing which shows the example of a control panel mounting diagram display screen of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Maintenance tool, 2 ... Control panel, 3 ... Unit, 4 ... RFID, 5 ... Reader, 6 ... Network, 7 ... Database, 8 ... Implementation drawing screen, 11 ... Central processing unit, 12 ... Storage device, 13 ... Transmission Device, 14 ... Monitor, 15 ... Communication device, 31 ... Controller (electronic board), 32a to 32d ... Electronic board, 33 ... Transmission device, 81 ... Check start button, 82 ... Electronic board mounting display area

Claims (3)

A control panel including a slot on which one or a plurality of electronic boards are mounted, and performing a process executable by the electronic board mounted in the slots;
In a control panel maintenance system comprising a controller connected to the controller of the control panel via a network and having a maintenance tool for maintaining or monitoring the controller,
RFID is attached to the electronic board mounted in the slot of the control panel,
Arranging a plurality of readers for reading information of the identification number of the RFID inside the control panel,
Information of the identification number of the RFID read from the plurality of readers is transmitted from the controller of the control panel to the control device via a network,
As a maintenance tool provided in the control device, provided with a database and mounting diagram relating to an electronic board mounted in each slot of the control panel,
The controller determines the arrival time of radio waves from the RFID attached to the electronic board at each of the plurality of readers arranged, and performs multipoint surveying from the determined arrival time information at the plurality of readers. By identifying the slot position where the board is mounted , the mounting status in each slot of the electronic board that reads the RFID identification number is determined,
Using a maintenance tool provided in the control device, a result of checking whether or not a correct electronic board is mounted in each slot of the control panel is displayed from a determination result of the mounting state in each slot of the electronic board. Control panel maintenance system characterized by that. The control panel maintenance system according to claim 1 ,
A control panel maintenance system for displaying a mounting diagram provided in the maintenance tool as a display of the verification result, and changing and displaying the color of the electronic board correctly mounted by the verification in the mounting diagram. The control panel maintenance system according to claim 2 ,
The database provided in the maintenance tool is composed of the identification number of the RFID, the type, revision, date of manufacture, and mounting position of the electronic board to which the RFID is attached. Maintenance system.

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