Train integrity detection method based on moving baseline solution

Abstract

The invention provides a train integrity detection method based on moving baseline solution. The method comprises the steps of: eliminating a clock error between a satellite and a receiver and a delayerror between an ionized layer and a troposphere related to a propagation path by using a double-difference carrier phase method, estimating relative position coordinates between two antennas at a column head and a column tail by using Kalman filtering, and then obtaining the length of a baseline between the two antennas at the column head and the column tail; and then comparing a solved baselinelength with a predetermined reference baseline length to judge whether a difference value therebetween is within a threshold range. If the difference value is within the threshold range, it indicatesthat the integrity state of a train is normal, otherwise, it indicates that the integrity state of the train is abnormal, and there may be a decoupling situation. The train integrity detection methodprovided by the invention is based on the solved moving baseline length, the moving baseline length is compared with the reference length to obtain the real-time integrity state information of the train, the train integrity detection method has the characteristics of good continuity and high reliability, and the probabilities of false alarms and missed alarms of train integrity can be reduced effectively.

Description

technical field [0001] The invention relates to the technical field of train integrity detection, in particular to a train integrity detection method based on moving baseline calculation. Background technique [0002] The carriages of the train are physically connected by couplers. During the running of the train, frequent acceleration and braking are required, and long-term action will damage the couplers. Therefore, there is a risk of decoupling between carriages. Once the train is decoupled, the train integrity detection system should be able to give an alarm message immediately to avoid accidents such as train derailment or collision with the rear car. In fact, before the train enters the blocked section, it must be ensured that the blocked section has been completely cleared, and that the last train has no remaining cars in the section. Therefore, the train integrity detection is an important part of the train operation control system, which is of great significance fo...

AI Technical Summary

Problems solved by technology

[0009] The disadvantage of this method is: when the positioning result has a large deviation, the calculated positions of the front and rear of the vehicle will be inaccurate. At this time, the estimated vehicle length has a large error, and the probability of false a

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