Fault detection device and method for safety interlocking loop of train door

Abstract

The invention discloses a fault detection device and a method for the safety interlocking loop of a train door. The device comprises a short circuit detecting and cut-off circuit, a short circuit point detecting and positioning circuit, a microprocessor chip, a memory circuit and a communication bus transceiving circuit. The short circuit detecting and cut-off circuit, the short circuit point detecting and positioning circuit, the memory circuit and the communication bus transceiving circuit are respectively connected with the microprocessor chip. The short circuit detecting and cut-off circuit and the short circuit point detecting and positioning circuit are connected with a safety interlocking loop detection system of a railroad train. According to the fault detection device and the method for the safety interlocking loop of the train door, the short circuit fault of a train door safety interlocking loop is detected. After that, a fault point is automatically cut off, and a short circuit point is positioned. The fault information is stored, and a fault code is displayed. Moreover, the information is sent to a railroad train bus communication system through a communication line interface. As a result, the emergency treatment of an on-site crew member and the maintenance of a returned train are facilitated. The device and the method are good in application prospect.

Description

technical field [0001] The invention relates to the technical field of train vehicle door systems, in particular to a fault detection device and method for a train door safety interlock circuit. Background technique [0002] At present, there are several doors on each side of the train vehicle, and the micro switches that reflect the position of the doors are installed on the doors. The train vehicles will connect these micro switches in series through cables to form a door safety interlock circuit. When in the locked state, the safety interlock circuit is turned on, and the safety interlock circuit detection system of the train vehicle can receive the conduction signal. At this time, the train vehicle has the conditions for traction. However, as long as any door is not locked If it is in place, the safety interlock circuit will be in a disconnected state, the safety interlock circuit detection system of the train vehicle will not receive the conduction signal, and the train...

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is that the short-circuit fault of the door safety interlock circuit in the prior art cannot automatically remove the fault point and locate the fault point, and instruct the crew

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