Safety relay redundant control system used for subway platform screen doors

A safety relay and redundant system technology, applied in the direction of electrical program control, sequence/logic controller program control, etc., can solve problems affecting passengers getting on and off, shield doors cannot be opened/closed, complex problems, etc., to ensure normal operation The effect of opening and closing

Active Publication Date: 2012-07-04
FANGDA INTELLIGENT INNOVATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively complex situation on site, and considering that subway operations have high requirements for safety and maintenance time, when the PEDC fails, it will cause the screen doors on the entire side to be unable to open / close, thus affecting passengers getting on and off the train

Method used

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  • Safety relay redundant control system used for subway platform screen doors
  • Safety relay redundant control system used for subway platform screen doors
  • Safety relay redundant control system used for subway platform screen doors

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Embodiment Construction

[0016] Such as figure 1 As shown, the redundant system of the logic control unit of the subway screen door proposed by the present invention includes: a safety relay control module RM, an electronic control module EM and a mode switching switch.

[0017] Such as figure 2 As shown, the safety relay control module RM includes a CPU, logic control relay group and output control relay group. The CPU completes the state monitoring of the logic control relay group, the logic control relay group completes the arbitration of external input commands and outputs hard-line commands, and the output control relay group is used to disconnect the hard logic commands. Considering that the output of the safety relay logic module is the default output mode under normal circumstances, the output control relay uses a normally closed contact to connect the control command in series. Open, cuts off the output signal of the safety relay logic module.

[0018] Such as image 3 As shown, the elec...

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Abstract

The invention discloses a safety relay redundant control system used for subway platform screen doors, which includes a safety relay control module (RM), an electronic control module (EM), and a mode selector switch. When the safety relay control module cannot output an effective command, the electronic control module sends out door opening, door closing, flexible door closing and other commands to the whole side of a DCU group, and the problems that screen doors on the whole side cannot be opened and further influence passengers who get on or off the subway can be avoided.

Description

technical field [0001] The invention relates to a subway screen door system, more specifically, to a subway screen door safety relay control redundancy system. Background technique [0002] The subway platforms are generally equipped with safety screen doors, and the opening / closing of the platform screen doors is realized by the logic control unit PEDC. The logic control unit realizes the arbitration of external input commands through safety relays and outputs hard-wired commands to the door control unit DCU group on one side of the platform, so as to realize the opening / closing of the screen door of the platform on this side. However, due to the relatively complicated situation on site, and considering that subway operations have high requirements for safety and maintenance time, when the PEDC fails, it will cause the screen door on the entire side to be unable to open / close, thereby affecting passengers getting on and off the train. Contents of the invention [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04
Inventor 刘晓东吕海波陈卓朱振飞郑洪涛
Owner FANGDA INTELLIGENT INNOVATION TECH CO LTD
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