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Gas pipe network PLC misoperation rate testing device and method

A technology for testing devices and false alarm rates, which is applied in electrical testing/monitoring, test/monitoring control systems, instruments, etc., can solve problems such as inaccurate test results and no guideline for false alarm rate testing, so as to save testing costs, The effect of improving work efficiency

Active Publication Date: 2020-06-09
BEIJING MUNICIPAL INST OF LABOUR PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the purposes of the present invention is to develop a device for testing the malfunction rate, which solves the above-mentioned problems of no guiding specification and inaccurate test results for the malfunction rate test mentioned above, realizes automatic testing and report generation, and greatly improves work efficiency

Method used

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  • Gas pipe network PLC misoperation rate testing device and method
  • Gas pipe network PLC misoperation rate testing device and method
  • Gas pipe network PLC misoperation rate testing device and method

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Embodiment 1

[0045] Such as figure 1 Shown, be the testing principle block diagram schematic diagram of data acquisition and monitoring control system (SCADA) in the gas pipeline network PLC test method of the present invention;

[0046]In the gas pipeline network PLC test method of the present invention, the data acquisition and monitoring control system (SCADA) includes a test device and a tested object, and the test device mainly includes a PXI chassis, a PXI controller, an analog output (AO) board, and a digital output signal (DO) board and test cable; the tested objects include main control unit, analog input (AI) board, digital input (DI) board; wherein, the PXI controller is located in the PXI chassis, and the PXI controller is connected with the The analog output (AO) board and the digital output signal (DO) board are connected; the analog output (AO) board is connected to the analog input (AI) board of the tested object through the test cable, and the digital output The signal (D...

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Abstract

The invention relates to a gas pipe network PLC misoperation rate testing device and method, and belongs to the technical field of industrial gas testing. The device mainly comprises a case, a controller, an analog quantity output board card, a digital output signal board card and a testing cable. The controller is located in the case and connected with the analog quantity output board card and the digital output signal board card. The analog quantity output board card is connected with an analog quantity input board card of a tested object through the testing cable, and the digital output signal board card is connected with a digital input board card of the tested object through the testing cable. A main control unit is connected with the controller in the testing device through an Ethernet port. According to the method, the interference of misoperation faults can be eliminated, and the misoperation rate of the measured object can be accurately measured; and the test cost is saved andthe working efficiency is improved.

Description

technical field [0001] The invention relates to a PLC misoperation rate testing device and method for a gas pipeline network, belonging to the technical field of industrial gas testing. Background technique [0002] Most natural gas stations use PLC to directly collect real-time data of the station and control on-site actuators such as valve switches. When PLC malfunctions, it will lead to miscontrol of on-site actuators, resulting in safety, economic losses and other consequences. [0003] Therefore, the error rate of the PLC is a very important indicator, and it needs to be tested to verify whether it meets the design requirements before it can be officially put into operation. [0004] In the industrial field, more attention is paid to the probability of rejection and availability test. For the PLC of the gas pipeline network, there are no special standards and specifications to guide the test of the malfunction rate at this stage. Some suppliers of industrial control s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0256
Inventor 靳江红王妤甜莫昌瑜
Owner BEIJING MUNICIPAL INST OF LABOUR PROTECTION
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