Beacon missed reading detection method for trains

Abstract

The invention discloses a beacon misreading detection method for a train. The method comprises the following steps: acquiring the maximum possible location and minimum possible location of a beacon antenna; if a range swept over by the beacon antenna at the maximum possible location in a last period comprises a theoretical beacon location, adding a beacon corresponding to the theoretical beacon location into a beacon queue; detecting whether the beacon antenna in the last period reads the beacon or not, if so, deleting the beacon from the beacon queue; judging whether a range swept over by the beacon antenna at the minimum possible location in the last period comprises a theoretical beacon location or not, and judging whether the beacon is in the beacon queue; if so, delaying for a set period of time, judging whether the beacon is in the beacon queue once again, and prompting misreading of the beacon if the beacon is still in the beacon queue. By adopting the beacon misreading detection method, misreading of the beacon caused by wrong arrangement of the beacon on the ground or failure of the beacon antenna can be detected.

Description

Technical field [0001] The invention relates to the field of urban rail transit control systems, in particular to a method for detecting missed reading of train beacons. Background technique [0002] In modern rail transit control systems, beacons are the key equipment for vehicle-ground communication and are widely used in the positioning of urban rail transit trains. Since the theoretical position of all the beacons on the ground communicating with the train is stored in the track database, it can be called when the train passes a beacon corresponding to the theoretical position of the beacon and reads it through the beacon antenna scan The theoretical value in the track database determines the position of the train. Combined with the travel distance obtained by the wheel speed sensor, the position of the train outside the position of the beacon can be obtained. When the beacon antenna of the train continuously reads two beacons, the position of the train can be obtained. Dire...

AI Technical Summary

Problems solved by technology

Although the method of positioning through beacons reduces the uncertainty compared with the method of positioning through wheel speed sensors alone, there are still some problems. The location of the beacons on the ground is wrong, or the beacon antenna is faulty. It will lead to missed reading of the beacon. When the train has passed the actual beacon on the ground, the beacon has not been read by the train, and the beacon can no longer be read

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