Self-checking method of automatic over-phase control system of motor train unit and realizing circuit

Abstract

The invention discloses a self-checking method of an automatic over-phase control system of a motor train unit. Firstly, an output signal of the automatic over-phase control system is cut off, and then whether a static photoelectric coupling circuit is output, whether a comparator circuit is output, the magnitude of a signal value received by a vehicle-mounted receiving inductor and a disconnection detection threshold voltage value and the magnitude of a short-circuit detection threshold voltage value are compared in sequence, and detection is carried out according to whether a dynamic photoelectric coupling circuit in each sales output state is output or not. According to the comparison between the detection result and the preset value, whether and where a fault exists is judged, and a fault alarm is input to a man-machine display unit, and a fault code is displayed according to the corresponding protocol. The self-checking method of an automatic over-phase control system of the motortrain unit effectively solves the problems that in the prior art that only open circuit detection exists and short circuit detection does not exist and the fault position cannot be accurately located.

Description

technical field [0001] The invention relates to an automatic over-phase separation control system applied to multiple train sets, in particular to a method for self-inspection of the system and a circuit for realizing it. Background technique [0002] At present, the automatic over-phase separation method used by EMUs with a speed of 160 km / h or more on my country's electrified railways (such as CRH1 series, CRH2 series, CRH3C, CRH5, CRH380 series, etc.) uses ground buried points as positioning information. Excessive mode. In this way, the on-board receiving sensor installed on the locomotive bogie receives the positioning information on the ground and inputs the information to the main control unit of the automatic over-phase control system through the signal conditioning circuit to trigger the automatic over-phase control system to send information to the locomotive on-board The microcomputer outputs the automatic phase separation control signal, and then the on-board micr...

AI Technical Summary

Problems solved by technology

The system has a "self-inspection" circuit, but there are some problems, as follows: 1) The self-inspection circuit can only perform self-inspection on each induction receiving circuit of the system. The LED keeps flashing all the time), but the fault location cannot be accurately located

This makes it impossible to give targeted instructions for maintenance after system failures. Maintenance personnel need to check each receiving circuit and corresponding devices one by one.

2) The self-inspection circuit only detects "open circuit" but not "short circuit" for the detection of the working condition of the on-board receiving sensor

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