Gauge detection device and detection method for high-speed railway track
A technology for detection devices and track detection vehicles, which is applied in the direction of measuring devices, optical devices, instruments, etc., and can solve problems such as being susceptible to light interference, high cost, and limited use range
Active Publication Date: 2012-12-26
FLIGHT AUTOMATIC CONTROL RES INST
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Problems solved by technology
This measurement method has high measurement accuracy and is not affected by the detection speed, but this method is susceptible to light interference, has strict requirements on the use environment, and has limited application range
In addition, its structure is complicated and the cost is high
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[0079] The above-mentioned detection device is installed on the track detection vehicle equipped with a detection platform, and the technical indicators of the key sensors are respectively: the inertial measurement component 7 selects the optical fiber strapdown inertial group, the first laser range finder 5 and the second laser range finder All devices 6 use LK-400G laser displacement devices with a measurement accuracy of 0.05 mm, and the collected data are processed as follows:
[0080] 1. Laser range finder calibration:
[0081] 1.1. Basic mechanical dimension measurement: the irradiation angle α of the first laser range finder 5 in the static state of the detection beam 9 1 is 27.1°; the irradiation angle α of the second laser rangefinder 6 in the static state of the detection beam 9 2 is 27.1°;
[0082] 1.2. Laser range finder data acquisition: After the detection device is powered on, the first laser range finder 5 and the second laser range finder 6 start to work, an...
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The invention belongs to a high-speed railway track detection technology, and relates to improvement of a gauge detection device and detection method for a high-speed railway track. The detection device provided by the invention comprises a track inspection van, and the upper surface of a detection platform [8] is equipped with a data processing system comprising a computer [1], a distometer data acquisition card [2] and a power supply. The detection device is characterized by also comprising a first laser distometer [5] and a second laser distometer [6] which are respectively controlled by a first distometer control box [3] and a second distometer control box [4], wherein the first laser distometer [5] and the second laser distometer [6] form a gauge measurement system together with an inertial measuring unit [7] and the data processing system. The detection method provided by the invention comprises the steps of laser distometer calibration, laser distometer data preprocessing, inertial measuring component data preprocessing, laser distometer data screening, data compensation and gauge calculation. The detection device and the detection method are not affected by detection speed, can perform non-contact measurement on gauges and have high measurement accuracy and a wide application range.
Description
technical field [0001] The invention belongs to the detection technology of high-speed railway track, and relates to the improvement of a continuous detection device and method for railway track gauge. Background technique [0002] Gauge refers to the distance between the gauge points at 16mm below the working surface of the left and right strands of the same cross section. The commonly used methods of gauge gauge mainly include contact measurement and non-contact measurement. The contact gauge measurement method uses a linear displacement sensor to measure the gauge. During the detection process, the mechanical structure ensures that the sensor is in constant contact with the gauge point of the track to be measured. Although the measurement result of this measurement method is relatively accurate at low speeds, the measurement low efficiency. In addition, since the sensor needs to be in contact with the track during the measurement process, when the detection speed needs ...
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IPC IPC(8): G01B11/14
Inventor 陈欢党进张金红李玮奇黎杰高柳张军政李保成
Owner FLIGHT AUTOMATIC CONTROL RES INST