Door safety loop fault point detection system and fault judgment method

Abstract

The invention relates to a fault point detection system for a car door safety loop, which includes a car door safety loop and a door controller assigned to each car door, wherein: the car door safety loop connects the first group of contacts at both ends of the state switches of all the doors in series, And the car door safety ring has a safety ring 1 end and a safety ring 2 end of each car door at both ends of the state switch of each car door; the safety ring 1 end and the safety ring 2 end are connected to the input end of the corresponding door controller; The door controller collects the level status fed back from the 1st end of the safety loop line and the 2nd end of the safety loop line. The fault point detection system of the car door safety loop line collects the level status fed back from the 1st end of the safety loop line and the level state fed back from the 2nd end of the safety loop line. By comparison, it can be judged whether there is a fault in the door safety loop and the location of the fault point. In addition, the present invention also proposes a fault judging method for the fault point detection system of the above-mentioned car door safety loop.

Description

technical field [0001] The invention relates to the technical field of urban rail vehicle circuit design. The present invention further relates to a fault point detection system and a diagnosis method for the door safety loop of an urban rail vehicle. Background technique [0002] In urban rail vehicles, the door system is a very critical, complex subsystem that has more contact with passengers and is directly related to passenger safety. Urban rail vehicles have a large number of doors and frequent operations. Taking an 8-carriage train as an example, there are usually 80 passenger compartment doors, and the doors need to be opened and closed every 2 to 4 minutes on average during operation, and the state of the doors is related to the operation of the train, so its failure rate and failure downgrading treatment Capability directly affects the operation quality and safety of the entire line. In order to monitor the status of the doors, when designing the vehicle circuit,...

AI Technical Summary

Problems solved by technology

[0005] Because the door security loop connects the states of all the doors in series, in addition to the failure of the security loop of the door itself, the door security loop between the vehicle level (in the same compartment) and the train level (between adjacent compartments) doors may also be Faults, such as broken wires, disconnected terminals, or loose connectors, may cause faults in the safety loop between the doors

[0006] However, due to the series structure of the door safety loop, when a fault is reported on the driver's display, it can only prompt the existence of a fault, but cannot determine where the fault occurred, and it is impossible to quickly troubleshoot the fault.

And due to the large number of contacts connected in series in the door safety ring line and the frequent use of the door, the number of door system failures accounts for about 50% of the entire vehicle failure, and it is difficult to quickly determine the location of the failure after the failure, so that the defect of the failure cannot be eliminated as soon as possible. Caused the train to be delayed, off the assembly line, and even clear passengers

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