Device and method or detecting smoothness of laser track

Abstract

The invention provides a device and method for detecting the smoothness of a laser track, and the method comprises the steps: detecting and obtaining a horizontal base measurement value Xi and a vertical base measurement value Y1 of a to-be-measured position Pi through a photoelectric measurement target; detecting a horizontal random deviation value delta(Xi) and a vertical random deviation valuedelta(Yi) of a laser reference beam through a deviation detection unit on the photoelectric measurement target, and correcting the horizontal random deviation value delta(Xi) and the vertical random deviation value delta(Yi); superposing the horizontal base measurement value Xi and a horizontal random deviation correction value delta(Xi)*Ki, and obtaining an engineering detection value Xi' in a horizontal direction; superposing the vertical base measurement value Yi and a vertical random deviation correction value delta(Yi)*Ki, and obtaining an engineering detection value Yi' in a vertical direction. The method solves a problem that the engineering detection result of a conventional laser smoothness detection device is low in precision and poor in reliability. The method is suitable for other laser alignment engineering measurement in an outdoor environment under the long-distance condition.

Description

technical field [0001] The invention relates to the technical field of laser alignment measurement, in particular to a laser track smoothness detection device and method. Background technique [0002] The direction and height of the railway track are two basic geometric parameters in the track smoothness inspection. Orbit direction refers to the lateral trend of the centerline of the track along the ground surface, whether it is straight on a straight line, and whether it is smooth on a curve. If the track direction is not smooth, it will cause the train to shake from side to side and snake, and thus increase the lateral impact force of the vehicle on the track, and further aggravate the irregularity of the track direction. The height refers to the longitudinal height difference of the top surface of the track. When the front and rear heights of the track are uneven, the train will experience bumps and impacts when passing these tracks. The above process can further aggrava...

AI Technical Summary

Problems solved by technology

The natural light intensity changes greatly in the field working environment. When the light spot is too bright and the environment is too dark, the eyes are prone to fatigue or injury. When the environment is too bright and the light spot is too weak, the recognition accuracy will be greatly reduced.

This situation greatly affects the actual detection accuracy, and at the same time significantly limits the extension of the current detection working distance

[0007] 2. The laser reference line currently used as the measurement reference, its stability will be affected by changes in laser parameters during the entire detection process, especially the jitter drift and slow bending of the light spot caused by atmospheric turbulence during transmission. As the detection distance increases, its The resulting deviation will increase dramatically

Obviously, the auxiliary light source will weaken the edge definition of the laser spot; as for the observation to determine whether the weather is stable and whether the spot jump is too large, as well as the conditions for judging whether the reference spot shifts too much during use and needs to be checked and retested, the calibration Whether the retest results after the nuclear test are more reliable than the previous results, all of which are difficult to implement relying on subjective and human processing

Moreover, these processing methods will also seriously affect the detection efficiency of the engineering site

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