JP2008181283A - Erroneous isolation prevention device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an erroneous isolation prevention device allowing stable isolation work without depending on the personal ability of a person responsible for the work and a person in charge of a test. <P>SOLUTION: This device used when confirming contents of the isolation work in a control panel 1 of a plant or the like performed by the person in charge of the test and the work responsible person has: a PTW (Permit To Work) tag 4A having an RFID (Radio frequency identification) function, recording guideline data related to the work contents, and installed in a prescribed position of a terminal block 2 in the control panel by the person in charge of the test; a wearable reader 6 that is a wireless type communication device carried by the person in charge of the test, reading state data in the PTW tag installed in the terminal block: and a mobile terminal 3A that is a wireless type mobile terminal carried by the work responsible person, having the guideline data related to the work contents, and comparing the state data read by the wearable device with the guideline data to perform quality decision. The wearable reader can receive a result of the quality decision from the mobile terminal. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an apparatus used for isolation work performed when testing a control panel of a plant or the like, and more particularly to an apparatus for preventing erroneous isolation.

  When testing this type of control panel, a jumper on the control panel terminal block is used to prevent transmission of unnecessary signals (for example, alarms, interlock signals, etc.) during the test, or to collect device data on the control panel. Alternatively, isolation is performed by lifting existing wiring. Here, the jumper means that a temporary jumper is attached to the terminal block of the control panel according to the test conditions, and the lift means that the main section wiring is connected to the terminal block of the control panel according to the test conditions. It means removing and isolating.

  An example of conventional isolation will be described with reference to FIG. In this case, the plant 100 is controlled by the control panel 1, and the terminal block 2 of the control panel 1 is isolated.

  For the isolation work, based on the work procedure 3 prepared in advance, the “Isolation management table / PTW tag 3” (PTW (Permit To Work): work permit or work slip) and the person in charge of the work and the person in charge of the test The person collaborates and confirms the oral communication with the person. When the person in charge of the work designates the isolation part by designation, the person in charge of the test attaches the PTW tag 3 to the designated part, confirms that there is no difference by checking with the terminal block, and repeats.

  The person in charge of the work listens to the contents of the repetition, confirms that it matches the location indicated earlier, and instructs isolation, that is, jumpers and lifts. The person in charge of the test who received the instruction from the person in charge of the work performs the isolation work and reports the result to the person in charge of the work. The person in charge of the work who received the report records the result of the implementation in the isolation management table.

  Isolation is restored after the test is complete. This work is also performed by the person in charge of the work and the person in charge of the test, but the “recovery location and isolation management table” is used. In other words, the person in charge of work calls the recovery location in the isolation management table, and the person in charge of the test collates the location with the PTW tag 3 and repeats. The person in charge of the work confirms whether the contents of the repetition are the same as the contents instructed by himself / herself, and if they match, instructs the person in charge of the test to restore the jumper / lift isolation.

  Upon receiving the instruction, the person in charge of the test will perform isolation recovery work and report the result to the person in charge of the work. Upon receiving the report, the person in charge of work records the recovery result in the isolation management table and ends.

  As described above, the conventional isolation is only confirmation by the human system by the person in charge of the work and the person in charge of the test. As a result, it is difficult to completely prevent false alarms and device malfunctions due to incorrect connection to the jumper wire or cable lift.

  In addition, if the person in charge of testing neglects to comply with the operation manual or there is a lack of skills for handling the control panel, errors due to human factors may occur.

  The present invention has been made in consideration of the above-described points, and an object thereof is to provide a false isolation prevention device that can stably perform an isolation operation without depending on the personal abilities of the person in charge of the work and the person in charge of the test. And

In order to achieve the above object, in the present invention,
A device used by the person in charge of testing and the person in charge of work to confirm the details of isolation work in a control panel such as a plant,
A PTW tag having an RFID function, in which guideline data relating to the work content is recorded and installed at a predetermined position of a terminal block in the control panel by the tester;
A wireless communication device carried by the person in charge of the test, a wearable reader that reads state data in the PTW tag installed on the terminal block;
A wireless portable terminal carried by the person in charge of the work, and having a guideline data regarding the work content, and a portable terminal that performs pass / fail judgment by comparing the state data read by the wearable device with the guideline data;
The wearable reader is capable of receiving a pass / fail judgment result from the mobile terminal.
I will provide a.

  In the present invention, as described above, RFID (Radio frequency identification: information is exchanged from a tag embedded with ID information by short-range wireless communication using an electromagnetic field or radio wave) on a terminal block of a control panel. The built-in PTW tag was placed, the tester had a wearable reader, and the person in charge of the work had a mobile terminal, and the PTW tag was read to obtain the isolation and recovery results. Can be performed.

  Hereinafter, an embodiment of the present invention will be described with reference to FIG.

  FIG. 1 is an explanatory view showing a first embodiment of the present invention. In this embodiment, a PTW tag 4A is arranged at a predetermined location on the terminal block 2 of the control panel 1, for example, a lift cable 12, and the PTW tag 4A is worn by a person in charge of the test with a pointing-type wearable reader 6. It is configured to read and transmit to the mobile terminal 3A carried by the person in charge of the work.

  The portable terminal 3 </ b> A is connected to the isolation management server 12 of the work place 200 via the transceiver 7, and holds a work manual 3 input in advance from the isolation input terminal 11. Therefore, when the wearable reader 6 reads the PTW tag 4A, the portable terminal 3A can immediately determine whether the isolation is good or bad.

  Next, the implementation of isolation and its recovery will be specifically described.

(Isolation implementation)
When testing the control panel 1 in the plant 100, the person in charge of work first creates a work procedure using the isolation information input terminal 11. This work manual includes an isolation management table in which jumpers such as panel numbers, device numbers, terminal block numbers, cable numbers, terminal numbers, and lift information are described. The created work manual is sent to and stored in the isolation management server 12.

  After this preparation, the person in charge of the work goes to the control panel to be tested by carrying the tablet PC type portable terminal 3A, for example, and the person in charge of the test with the PTW tag 4A and the wearable reader 6.

  Then, the person in charge of work uses the portable terminal 3A to transmit the work manual including the isolation management table from the isolation management server 12 via the transceiver 7 to the wireless data communication (for example, PHS, wireless LAN, DSL (Digital Abbreviation for Subscriber Line, a general term for high-speed digital data communication using a telephone line.

  Next, the person in charge of the work selects, for example, the jumper and the lift point indicated in the isolation management table in the work manual displayed on the portable terminal 3A by using the input pen, and also the contents selected by the person in charge of the test. Instruct.

  In response to this instruction, the person in charge of the test finds a jumper in the control panel 1 and a terminal block to be lifted, and reads information on the PTW tag 4A attached to the terminal block by the wearable reader 6.

  The read information is transmitted from the wearable reader 6 to the portable terminal 3A carried by the person in charge of work by wireless data communication (for example, BLUETOOTH) different from the above. The portable terminal 3A collates the information transmitted from the wearable reader 6 with the jumper and the lift part selected by the work manager in the work manual, and determines the difference.

  The determination result is displayed on the screen in the form terminal 3A and is transmitted to the wearable reader 6 together. The wearable reader 6 has a function of transmitting the determination result to a tester. This is transmitted, for example, in such a manner that it vibrates if it is “good” and does not vibrate if it is “bad”. Upon receiving this result, the person in charge of the test attaches the PTW tag 4A to a predetermined cable, and implements its jumper and lift.

  After performing the jumper and lift, the person in charge of the test reads the attached PTW tag 4 </ b> A with the wearable reader 6. The read result is automatically sent to the portable terminal 3A and recorded in the isolation management table.

  After carrying out all the jumper and lift operations shown in the isolation management table in this way, the person in charge of the work moves the jumper and lift to the isolation management table stored in the isolation management server 12 from the portable terminal 3A. Upload the latest results of and perform isolation.

(Restoration of isolation)
The point that the person in charge carries the portable terminal 3A and the person in charge of the test carry the wearable reader 6 is the same as when the isolation is performed.

  The person in charge of work accesses the isolation management server 12 using the portable terminal 3A and downloads the stored work manual. Then, the person in charge of the operation selects the jumper of the isolation management table displayed on the portable terminal 3A and the position where the lift is being performed by operating the input pen, and also instructs the test person to recover.

  The person in charge of the test finds the PTW tag 4A and the terminal block 2 attached to the control panel 1 according to this instruction, and reads the built-in RFID information by the wearable reader 6.

  The read information is sent from the wearable reader 6 to the portable terminal 3A by data communication such as BLUETOOTH, and the difference between the jumper and the lift recovery point selected by the person in charge of the work is determined.

  The determination result is sent to the mobile terminal 3A of the person in charge of the work and displayed on the screen, or sent to the wearable reader 6 of the person in charge of testing by data communication such as BLUETOOTH and transmitted to the person in charge of the test with or without vibration. .

  If the result of the determination is good, the person in charge of the test confirms that the PTW tag 4A attached to the cable matches the instructed recovery location, and performs a jumper / lift recovery operation.

  After the jumper and lift are restored, the tester reads the RFID information of the attached PTW tag 4A with a wearable reader. The read information is sent from the wearable reader 6 to the portable terminal 3A by data communication and automatically recorded in the isolation management table.

  According to such a procedure, the jumper and lift recovery work planned in the isolation management table is performed, and when the work is completed, the person in charge of the work jumps to the isolation management table in the isolation management server 12 by data communication from the portable terminal 3A. Upload the latest lift results. Thereby, the recovery work is completed.

Modified example

  In the above embodiment, two types of data communication are performed among the mobile terminal 3A, the wearable reader 6, and the transceiver 7. A wireless method is desirable for this communication, but various types of data communication can be used.

Explanatory drawing which shows the structure of one Embodiment of this invention. Explanatory drawing which shows the conventional isolation operation | work.

Explanation of symbols

1 control panel, 2 terminal block, 3 work instructions, 4,4A PTW bill,
5 Lift cable, 6 Wearable reader, 7 Transceiver,
11 isolation input terminal, 12 isolation management server,
100 plants, 200 working places.

Claims (5)

A device used by the person in charge of testing and the person in charge of work to confirm the details of isolation work in a control panel such as a plant,
A PTW tag having an RFID function, in which guideline data relating to the work content is recorded and installed at a predetermined position of a terminal block in the control panel by the tester;
A wireless communication device carried by the person in charge of the test, a wearable reader that reads state data in the PTW tag installed on the terminal block;
A wireless portable terminal carried by the person in charge of the work, and having a guideline data regarding the work content, and a portable terminal that performs pass / fail judgment by comparing the state data read by the wearable device with the guideline data;
The wearable reader can receive a pass / fail judgment result from the portable terminal. The false isolation preventing device according to claim 1,
The wearable reader has a wearable structure that can be worn on a hand of the person in charge of the test. The false isolation preventing device according to claim 1,
The mobile terminal has a function of receiving the pointer data from the outside, and an erroneous isolation preventing device. The false isolation preventing device according to claim 1,
The wearable reader includes an RFID, and a false isolation preventing device. The false isolation preventing device according to claim 1,
The wearable reader has a function of vibrating according to the pass / fail judgment result.

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