JP4613912B2 - Cable connection guide method and apparatus used therefor - Google Patents

Description

  The present invention relates to a guide method for guiding a cable connection destination to an operator when connecting a cable to a terminal block, and an apparatus used therefor, particularly for cable connection work in a nuclear power plant or the like where a large number of cables exist. The present invention relates to a suitable cable connection guide method and an apparatus used therefor.

  When connecting a cable to a terminal block of a control panel or equipment in a nuclear power plant, etc., the worker has conventionally provided information on the cable connection of which cable is connected to which terminal block (which core wire is connected to which terminal). Etc. were drawn from the paper-based design drawings / connection diagrams, and were carried out with the operator's confirmation work based on the obtained cable connection information.

  The specific work procedure is as follows. First, the control panel is installed at a predetermined location, and the cable is pulled out from the cable drum (the one in which the cable is wound and stored) and cut to a required length. At both ends of the cable, a cable card (paper tag) describing the arrival and departure points to which the cable is connected is attached. After that, both ends of the cable are respectively connected to the arrival point (terminal block) of the cable based on the description contents of the cable card and the cable connection information. When connecting the cable to the terminal block, the operator himself pulls out the cable connection information from the connection diagram (or the field supervisor etc. pulls out the cable connection information and instructs the operator where to connect the cable) While the operator visually confirms the description contents of the cable card and the position of the landing point, the cable is connected to a predetermined terminal block.

JP 2003-114247 A

  However, in the conventional cable connection method, an operator has to rely on a paper-based design drawing or a cable card when checking the connection destination of the cable. Accordingly, various confirmation operations when connecting the cables require confirmation by an operator's visual inspection or the like. As a result, there is a problem that the cable connection work requires a lot of labor and increases the work time. Such a problem becomes particularly prominent when the number of cables (the number of core wires) and the number of terminals to which they are connected are enormous, such as in a nuclear power plant.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a cable connection guide method for supporting an operator's cable connection by eliminating the need for visual confirmation using a paper-based design drawing or a cable card when connecting a cable to a terminal block. To provide an apparatus.

  The first core wire identification information for identifying the first core wire is extracted from the RFID tag connected to the first core wire of the cable, and the first core wire identification information is the core wire identification information for identifying the core wire. First terminal identification for identifying the first terminal to which the first core wire is connected by collating with the terminal connection information database associated with the terminal identification information for identifying the terminal to which the core wire is connected. Information is obtained, and a terminal display device associated with the first terminal is displayed based on the first terminal identification information.

In connecting a cable to the terminal block, and eliminates the need for visual confirmation by the worker using the paper-based design drawings and the cable card or the like, the position of the terminal to be connected to the core wire can Rukoto inform the operator.

  The cable connection guide method and the apparatus used therefor in the present invention will be described in detail with reference to the drawings.

  In the present embodiment, the control panel 1 refers to a housing that houses operation switches, monitors / recorders, other control devices and the like for controlling the operation of equipment at a nuclear power plant or the like. The equipment 11 means an air conditioner, a heat exchanger, a heater, instrumentation equipment, and other equipment, in addition to a valve attached in the middle of a pipe through which a fluid such as steam in a nuclear power plant flows. The terminal 2 is a component that becomes a point when a cable is connected to the control panel 1 or the like. The terminal block 21 means a terminal having a plurality of terminals 2 and is arranged inside the control panel 1 or the like. Inside the control panel 1 or the like, instruments, switches, lamps, and the terminal block 21 are connected to each other by wiring called an insulated wire. An insulated wire is constituted by a conductor through which electricity passes and an insulator such as polyethylene covering the periphery of the conductor. Since the outside of the control panel 1 may be damaged unlike the inside, the insulated wire is further protected with polyethylene or the like. The cable means a cable having this protective layer (a bundle of insulated wires (core wires) covered with a sheath).

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, when connecting the core wire 5 included in the cable to the control panel 1 and the terminal 2 of the device 11, the connection work of the worker is supported using an RFID tag or the like.

  FIG. 1 is a flowchart showing the work procedure of this embodiment. Hereinafter, the present embodiment will be described with reference to this flowchart. First, the control panel 1 and the equipment 11 are installed at predetermined positions in the nuclear power plant (S1). Thereafter (or in parallel with (S1)), the cable 3 is pulled out from the cable drum outdoors and cut to a required length (S2).

Further, an RFID tag is attached to each core wire at both ends of the cable 3 (S3). Each cable 3 has a plurality of core wires 5 therein, and the cables 3 are connected to the terminal block 21 by connecting each core wire 5 to the terminal 2 of the terminal block 21 arranged inside the control panel 1. The Rukoto. The RFID tag 4 of the core wire 5 includes at least identification information (hereinafter referred to as “core wire identification information 61”) unique to the core wire 5 that identifies the core wire 5 from other core wires, and identification of the terminal 2 to which the core wire 5 is connected. Information (hereinafter referred to as “terminal identification information 62”). Further, the RFID tag 4 may be provided with cable identification information for identifying the cable 3 to which the core wire 5 belongs, terminal block identification information for identifying the terminal block or control panel to which the terminal belongs, control panel identification information, and the like.

Next, the cable 3 is carried into the building of the nuclear power plant (S4) and laid at a predetermined place (S5). Specifically, the cable 3 is brought into the building, and is laid on the starting side (for example, the control panel 1 side) and the landing side (for example, the device 11 side), starting from the intermediate point of the landing point.
The cable is laid by passing the cable through a cable storage device (electric wire path) such as a cable tray or a conduit installed on the laying path. After the installation of the cable 3 is completed, the cable is drawn into the control panel 1 (S6). The connected cable 3 (core wire 5) is processed at the terminal before being connected to the terminal block 21 (S7).

Then, each core wire 5 of the cable 3 is connected to the target terminal 2 in the control panel 1 and the apparatus 11 (S8). FIG. 2 is a schematic diagram illustrating a situation where the cable 3 is connected to the control panel 1 and the terminal block 21. Each core wire 5 at one end of the cable 3 is connected to the terminal 2 provided on the terminal block 21 of the control panel 1, and each core wire 5 at the other end of the cable 3 is connected to the terminal 2 provided on the terminal block 21 of the device 11. Is done. FIG. 3 shows a schematic diagram of a connection work guidance system in the present embodiment. FIG. 4 is a flowchart showing a work procedure for connecting the cable to the terminal block, and shows (S8) in FIG. 1 in detail.

  Hereinafter, the operation of connecting the core wire 5 to the terminal 2 in the control panel 1 will be described with reference to the flowchart of FIG. The worker includes a reader (reading device) 6 that reads information from the RFID tag and a portable terminal 8 that transmits predetermined information.

  First, “cable connection” is selected from the work items displayed on the terminal 8 carried by the worker (S8-1). Upon receiving this “cable connection” selection, the “control panel number” is presented to the portable terminal 8. The operator selects the number of the control panel 1 to be connected to the cable 3 (S8-2). Next, an operator reads the information of the RFID tag 4 of the core wire 5 of the cable 3 by the reader 6 (S8-3). Information on the RFID tag 4 is sent to the portable terminal 8, and the core identification information 61 of the core 5 is extracted from the RFID tag 4 (S8-4).

Next, based on this core wire identification information 61, the terminal identification information 62 of the terminal 2 to which the core wire 5 is to be connected is obtained (S8-5). Specifically, connection information between the core wire identification information 61 and the terminal identification information 62 (referred to as information indicating which core wire 5 is connected to which terminal 2, hereinafter referred to as “core wire terminal connection information 63”). Back view (design drawing showing connection information in the terminal block 21 of the control panel 1 and the equipment 11) having a core terminal connection information database (hereinafter referred to as "core terminal connection information DB") created in association with each other. Terminals to which the core wire 5 is connected by reading data from the database (hereinafter referred to as “back diagram DB7”), collating the core wire identification information 61 extracted in (S8-4) with the back diagram DB7 (core wire terminal connection information DB). 2 terminal identification information 62 is obtained. That is, the back view DB 7 (core wire terminal connection information DB) is searched using the core wire identification information 61 as a key, and the terminal identification information 62 of the terminal 2 to which the core wire 5 is connected is obtained.

  It is not necessary to read all of the back view DB 7, and it is possible to read only the back view DB 7 corresponding to the control panel 1 number to be connected. If there is no corresponding terminal identification information 62 for the control panel 1 selected by the worker, an error message can be output from the portable terminal 8 or the like to notify the worker or the like.

Thereafter, the terminal identification information 62 obtained in (S8-5) is output to the display guide controller 26 (S8-6). The display guide controller 26 receives the terminal identification information 62 from the control device 8, and displays the display device associated with the terminal 2 to which the core wire 5 is to be connected (S8-7). As the display device, for example, an LED (hereinafter referred to as “terminal LED 25”) can be used.
By emitting light 25, the operator can be informed of the position of the terminal 2 to be connected.

  Here, the LED controller 26 used as the display guide controller 26 when LEDs are used as the display device will be described. FIG. 5 shows a detailed configuration diagram of the LED controller 26. As the terminal identification information 62, an information string of terminals ON / OFF (0/1, 0/1,..., 0/1) can be used. If the i-th element of the information string of the input terminal identification information 62 is 0, the SW control unit 27 turns off sw (i), and the terminal LED 25 associated with the terminal does not emit light. SW (i) is turned ON, and the terminal LED 25 attached to the terminal is caused to emit light. As a result, the terminal LED 25 attached to the terminal 2 to which the cable 3 (core wire 5) is connected emits light, so that the core wire 5 can be connected without visual confirmation by an operator using a paper-based design drawing or a cable card. It can be connected to a predetermined terminal.

  Thereafter, according to the display on the display device (lighting of the terminal LED 25), the operator connects each core wire 5 of the cable 3 to the target terminal 2 of the terminal block 21 using a tool such as a screwdriver (S8-8). Subsequently, connection work is similarly performed for the other terminals 2 of the control panel 1 and the terminals 2 of the device 11. After all the connection operations in the control panel 1 and the device 11 are completed, the cable 3 is laid out in consideration of the appearance and appearance around the terminal block 21 (S9). Then, the appearance inspection about the cable 3 and the core wire 5 is implemented (S10), and the cable laying connection work is completed.

  The back diagram data can include a control panel number, terminal block number, terminal number, cable number, and core number. Furthermore, information indicating whether the core wire is connected to the terminal (1 during connection) or not (0 during disconnection) can also be provided. That is, after the core wire 5 is connected to a predetermined terminal, when the operator selects the connection work end button from the portable terminal 8, the connection work end information is transmitted to the control device and further input to the data in the back diagram. The Thereby, it is possible to register the progress status of which work has been completed.

  When the length of the cable 3 is further shortened during work at the cable laying site, the RFID tag can be replaced according to the length of the cable 3.

  In this embodiment, when connecting the cable to the terminal block, the core wire can be connected to a predetermined terminal without visual confirmation by an operator using a paper-based design drawing or cable card. Time spent for connection work can be reduced. This is particularly effective when the number of cables (the number of core wires) and the number of terminals are enormous, such as in a nuclear power plant.

  In addition, in the cable connection work, the operator can connect the cable to the terminal block without looking at the design drawing (because it is possible to eliminate the intervention of the confirmation work by the worker himself), it is due to human error. Reliability can be improved from the viewpoint of preventing erroneous connection.

  In the present embodiment, as in the first embodiment, when connecting the core wire 5 included in the cable 3 to the control panel 1 and the device 11, the connection work of the worker is supported using an RFID tag or the like. However, the terminal display device (terminal LED 25) for specifying the terminal 2 is not directly installed on the terminal block, but is installed on the terminal block cover 15 attached to the terminal block 21. The terminal block cover 15 is manufactured as a standard on the assumption that the specifications (number of connection points, dimensions, etc.) of the terminal block 21 of the control panel 1 and the device 11 are common, and can be attached to a plurality of terminal blocks 21. It is.

  FIG. 6 is a schematic diagram illustrating a situation where the cable 3 is connected to the control panel 1 and the terminal block 21 when the terminal block cover 15 is used. Hereinafter, the present embodiment will be described with reference to FIG. The RFID including the core wire identification information 61, the back view DB 7 (core wire terminal connection information 63) including data associated with the core wire identification information 61 and the terminal identification information 62, and display guidance for displaying a predetermined display device. Example 1 is the same as that of supporting the worker's connection work by notifying the worker of the terminal 2 to which the core wire 5 is connected using the controller 26 or the like. The description will be omitted, and differences from the first embodiment will be described.

First, similarly to the first embodiment, the core wire identification information 61 is extracted from the information of the RFID tag 4 attached to the core wire 5, and the terminal 2 to which the core wire 5 is connected from the core wire identification information 61 and the core wire terminal connection information 63. Terminal identification information 62 is obtained. However, in this embodiment, the terminal identification information 62 includes not only the identification information of the terminal 2 but also identification information of the terminal block 21 to which the core wire 5 is connected (hereinafter referred to as “terminal block identification information 64”). Based on the terminal block identification information 64, the display guide controller 26 displays the terminal block display device 28 attached to the terminal block 21 to which the core wire 5 is connected. As the terminal block display device, for example, an LED can be used. By illuminating the terminal block LED 28, it is possible to guide the operator to which terminal block 21 the core wire 5 should be connected (to which terminal block 21 the terminal block cover 15 should be attached).

  Thereafter, according to the display on the terminal block LED 28, the worker attaches the terminal block cover 15 including the terminal display device (for example, the terminal LED 25) to the terminal block 21 on which the terminal block LED 28 is lit. The terminal block cover 15 is attached so as to cover the surface of the terminal block 21 having the terminals 2.

After the terminal block cover 15 is attached to the terminal block 21, the core wire identification information 61 of the RFID tag 4 is read again by the reader 6, and the terminal 2 to which the core wire 5 is connected from the core wire identification information 61 and the core wire terminal connection information 63. Terminal identification information 62 is obtained. Based on the terminal identification information 62, the display guide controller 26 turns on the terminal LED 25 associated with the terminal 2 to which the core wire 5 is connected. By lighting the terminal LED 25, it is possible to guide the operator to which terminal 2 the core wire 5 should be connected.

  Each terminal LED 25 of the terminal block cover 15 is arranged at a predetermined position so as to correspond to each terminal 2 of the terminal block 21. Therefore, by lighting the terminal LED 25 of the terminal block cover 15, the operator can be notified of the terminal 2 to which the core wire 5 is to be connected.

  When the cable (core wire 5) connection work in the terminal block 21 unit is completed and the operation shifts to the connection work to another terminal block, the terminal block cover 15 is removed from the terminal block 21 after the connection work is completed. The terminal block cover 15 removed is attached to another terminal block, and the cable connection guidance is performed in the same manner as described above.

In this embodiment, after the terminal block cover 15 is attached to the terminal block 21, the core wire identification information 61 of the RFID tag 4 is read again by the reader 6, and the core wire 5 is obtained from the core wire identification information 61 and the core wire terminal connection information 63. The terminal identification information 62 of the terminal 2 connected to the terminal 2 is obtained, but without waiting for an instruction from the operator (without obtaining the core identification information 61 again by the operator), the terminal block cover 15 is attached to the terminal block. The display guide controller 26 may light the terminal LED 25 based on the terminal identification information 62 obtained first by attaching to the terminal 21 (using the terminal block cover 15 as the trigger for installation).

  Further, when the terminal block 21 to which the core wire 5 is to be connected is known, it is not necessary to turn on the terminal block LED 28, the terminal block cover 15 is attached to the predetermined terminal block 21 in advance, and then the core wire 5 connection work is performed. be able to.

  In the present embodiment, the same effects as in the first embodiment can be obtained. Furthermore, since the terminal block cover 15 can be used for a plurality of terminal blocks by using the standardly prepared terminal block cover 15, a guide device in which terminal LEDs are provided on all the terminal blocks 21 is prepared. This is unnecessary, and the cost for connecting the cables can be reduced.

The flowchart which shows the operation | movement procedure of a 1st Example. Schematic which shows the condition which connects a cable to a control panel and a terminal block. 1 is a schematic diagram of a connection work guidance system in a first embodiment. The flowchart which shows the connection work procedure of a core wire. The detailed block diagram of a LED controller. The schematic diagram of the connection work system in the 2nd example.

Explanation of symbols

1 Control panel 2 Terminal 3 Cable 4 RFID tag 5 Core wire 6 Reader 7 Database (DB)
8 Mobile terminal 11 Device 15 Terminal block cover 21 Terminal block 25 Terminal LED
26 LED controller 28 Terminal block LED
61 Core identification information 62 Terminal identification information 63 Core terminal connection information 64 Terminal block identification information

Claims (4)

First RFID identification information for identifying the first core wire is extracted from the RFID tag connected to the first core wire of the cable,
The first core wire identification information is collated with a core wire terminal connection information database in which core wire identification information for identifying a core wire is associated with terminal identification information for identifying a terminal to which the core wire is connected. Obtaining first terminal identification information for identifying a first terminal of a terminal block in which a plurality of terminals to which one core wire is connected and a terminal display device associated therewith are arranged;
A cable connection guide method for displaying a terminal display device associated with the first terminal based on the first terminal identification information. A terminal block cover having a display device arranged so as to correspond to the position of the terminal to which the core wire of the cable is connected, so as to cover the first terminal block in which the terminals are gathered;
First core identification information for identifying the first core wire is taken out from the first RFID tag connected to the first core wire of the cable,
The first core wire identification information is collated with a core wire terminal connection information database in which the core wire identification information for identifying the core wire is associated with the terminal identification information for identifying the terminal to which the core wire is connected, Obtaining first terminal identification information for identifying a first terminal to which the first core wire is connected;
Based on the first terminal identification information, to display the display device arranged in the cable cover attached to the first terminal,
Thereafter, the terminal block cover is removed from the first terminal block and arranged to cover the second terminal block,
From the second RFID tag connected to the second core wire of the cable, the second core wire identification information for identifying the second core wire is extracted,
Collating the second core wire identification information with the core wire terminal connection information database to obtain second terminal identification information for identifying the second terminal to which the second core wire is connected;
A cable connection guide method for displaying the display device arranged on the cable cover attached to the second terminal based on the second terminal identification information. A reading device that reads first core wire identification information for identifying the first core wire from an RFID tag connected to the first core wire of the cable;
A core wire terminal connection information database in which core wire identification information for identifying a core wire and terminal identification information for identifying a terminal to which the core wire is connected;
For collating the first core wire identification information with the core wire terminal information database and identifying a first terminal of a terminal block in which a plurality of terminals to which the first core wire is connected and an associated terminal display device are arranged. A device for obtaining the first terminal identification information;
A cable connection guide device comprising: a display guide controller for displaying a terminal display device associated with the first terminal based on the first core terminal information. In Claim 3, the cable connection guide device includes a terminal block cover arranged to cover a terminal block where the terminals gather.
The said terminal block cover is a cable connection guide apparatus which comprises the said terminal display apparatus arrange | positioned so as to correspond with the position of the said terminal of the said terminal block.

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