Automatic monitoring device for ballastless track structure

Abstract

The invention discloses an automatic monitoring device for a ballastless track structure. The automatic monitoring device comprises a laser emitter, photoelectric receivers and a signal processing controller. The photoelectric receivers are fixed on a ballastless track and used for receiving laser signals emitted by the laser emitter and sending the position data of the laser signals to the signalprocessing controller; and the signal processing controller receives the position data sent by each photoelectric receiver and corrects the position data. According to the method, by pre-analyzing corresponding reasons when the position data of a PSD target is abnormal, multi-level correspondence relation between displacement threshold and change threshold and abnormal causes is established; andin real-time monitoring process, the position data measured by the PSD target is corrected and calibrated according to the pre-established correspondence relation, thereby eliminating pseudo-abnormaldata and accurately positioning to corresponding true abnormal data when equipment is abnormal and a track structure has an open joint, and preventing appointing maintenance personnel for field maintenance when the track structure is not abnormal and avoiding additional workload of the railway maintenance personnel.

Description

technical field [0001] The invention belongs to the technical field of crack measurement of ballastless track structures, and more particularly relates to an automatic monitoring device for ballastless track structures based on laser and PSD technology. Background technique [0002] Ballastless track refers to the track structure that uses concrete, asphalt mixture and other integral foundations to replace the loose-grained gravel track bed, also known as ballastless track, which is an advanced track technology in the world today. Compared with the ballasted track, the ballastless track avoids ballast splashing, has good smoothness, good stability, long service life, good durability, less maintenance work, and the train running speed can reach more than 350 kilometers per hour. One of the main disease types of ballastless track is the interlayer gap of the track structure, which mainly exists between the track slab, CA mortar and the base structure. The interlayer gap seriou...

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Problems solved by technology

[0004] Although this method can realize the real-time and accurate monitoring of the temperature stress condition of the seamless line, it has the following disadvantages: it lacks the process of correcting and correcting the displacement data measured by the rail displacement laser measurement unit. During the continuous monitoring process, There may be errors in the rail parameters measured by the rail displacement laser measurement unit. This error may be an accidental error, or it may be an equipment error caused by equipment abnormality or loose installation of the laser transmitter or photodetector; the above two errors may be This leads to abnormal changes in the final rail parameters. In this case, if the railway maintenance personnel are assigned to the site to maintain the steel rails without abnormalities, it will undoubtedly increase the workload of the railway maintenance personnel and waste manpower and material resources.

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