Subway shield door insulation monitoring system and method

An insulation monitoring and screen door technology, applied in impedance measurement and other directions, can solve the problems of low safety, insulation monitoring device cannot predict insulation failure in advance, and achieve the effect of early warning, good safety and reliability

Inactive Publication Date: 2016-10-05
刘春梅
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problem that the existing insulation monitoring device cannot predict insulation failure in advance, resulting in low safety

Method used

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  • Subway shield door insulation monitoring system and method
  • Subway shield door insulation monitoring system and method

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Embodiment Construction

[0022] see figure 1 , the figure shows the subway screen door insulation monitoring system according to the present invention, which includes: a detection device 1, a PLC control processor 2, an on-off controller 3, and an alarm device 4;

[0023] One end of the detection device 1 is connected to the subway screen door 100, and the other end is connected to an absolute ground 300 for detecting the resistance value between the screen door 100 and the ground; the detection device 1 includes at least 10 resistance detection devices 11, A / D conversion module 12 and an output module 13; there are 15 resistance detection devices in this embodiment; 15 resistance detection devices 11 are connected to 15 detection points A1, A2...A15 of shielded door 100 at even intervals through L4 respectively, and can Set the detection points A1, A2...A15 on the pillar of the screen door 100; the other ends of the 15 resistance detection devices 11 are connected to the absolute ground 300 through ...

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Abstract

The invention discloses a subway shield door insulation monitoring system and method. The system comprises a detection apparatus in which has one end connected with a subway shield door and the other end grounded and is used for detecting a resistance value of the shield door relative to the ground; a control processor (PLC) which is used for emitting a detection instruction, controlling an equipotential wire for connecting / disconnecting the shield door with / from a steel rail, receiving the resistance value, detected by the detection apparatus, of the shield door relative to the ground and making a comparison between the value and early warning and alarm thresholds; an on-off controller which is connected to the equipotential wire between the shield door and the steel rail and used to control connection and disconnection of the equipotential wire between the shield door and the steel rail; and an alarm apparatus which receives an instruction early warning or an alarm of the PLC. According to the invention, the insulation resistance between the shield door and the absolute ground can be directly detected in real time, the early warning is given in advance, safety hidden risks brought by insulation failure are effectively prevented, and the safety and reliability are good.

Description

technical field [0001] The invention relates to an insulation monitoring system and a monitoring method, and specifically designs an insulation monitoring system for a subway screen door, that is, a monitoring method. Background technique [0002] In the construction of subways and urban light rail, etc., it is necessary to equipotentially treat the subway screen door and the track, so as to prevent passengers from touching the screen door when they get off the train. Because there is a potential difference between the subway and the track to the ground, it is required that the subway screen door should be insulated from the ground. This requirement is included in the construction standards and bidding documents. The specific required value is that the overall resistance of the screen door to the ground is not less than 0.5 M Europe. [0003] After the screen door is connected to the rail, the insulation between the screen door and the ground is very important. In order to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/18
Inventor 刘春梅
Owner 刘春梅
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