Method for detecting whether distance between subway platform shielded gate and vehicle body is safe

Abstract

The invention discloses a method for detecting whether the distance between a subway platform shielded gate and a vehicle body is safe. According to the method, a two-dimensional laser scanner is installed at the point where the midperpendicular of the rear surface of a railway vehicle intersects with the plane where the bottom edges of vehicle doors are located, an angle encoder is installed on the head of an axle, a polar coordinate storage module, a data processing host and a mileage positioning module are installed in a compartment, spatial three-dimensional coordinates are obtained through processing of the data processing host by means of the distance between the scanner and the shielded gate obtained by the two-dimensional laser scanner and the advancing mileage of the vehicle obtained by the angle encoder and the mileage positioning module, then specified vehicle limit coordinate values are introduced to the same three-dimensional coordinate system, and the actual distance between the vehicle body and the shielded gate is measured and then compared with the specific safety distance so that whether the distance between the shielded gate and the vehicle meets safety requirements can be judged. According to the method, vehicle-mounted dynamic detection is achieved, detection precision is improved, operation is easy, realizing cost is low, and application and popularization are facilitated.

Description

technical field [0001] The invention relates to a method for detecting whether the distance between a screen door of a subway platform and a car body is safe, and belongs to the technical field of track safety detection. Background technique [0002] At present, the detection method of the distance between the screen door of the subway platform and the car body is mainly the traditional mechanical static measurement of the scale or the installation of a laser distance sensor at the door post of the screen door for measurement. The traditional mechanical measurement operation process is complicated, the operation efficiency is low, the human measurement error is large and other defects, and it cannot reflect the real distance between the rail vehicle and the screen door when entering and leaving the station, so it cannot meet the existing measurement needs. However, if a laser distance sensor is installed at the gate post of the shielded door to measure, it is necessary to in...

AI Technical Summary

Problems solved by technology

The traditional mechanical measurement operation process is complicated, the operation efficiency is low, the human measurement error is large and other defects, and it cannot reflect the real distance between the rail vehicle and the screen door when entering and leaving the station, so it cannot meet the existing measurement needs

And to install the laser distance sensor measurement at the door post of the shielded door, it is necessary to install the sensor at each shielded door, and the required cost is too high

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