Device and method for automatic calibration of locomotive wheel diameter based on radar

Abstract

The invention discloses an automatic calibration device and method for the wheel diameter of a locomotive based on a radar. The radar is adopted to measure the speed and collects the actual operationdistance and the actual operation speed of the locomotive, the wheel diameter value of the locomotive is modified through a wheel diameter stepped calibration method every 1000 seconds, the modified difference value cannot be larger than 1 millimeter till the calculated valve is the same as the current wheel diameter value. The precision of calibration through the radar is high, the precision level of radar calibration is millimeter; the automatic calibration device is not limited by operation lines and can be widely applied to various lines such as the straight line, the curve and a ramp; andthe radar is not installed on a shaft head of the locomotive or a motor, and by comparing the speed of the radar with the speed of the shaft head or the rotating speed of the motor, the conditions ofidling, sliding and the like can be detected. The wheel diameter value of the locomotive is modified through the wheel diameter stepped calibration method, so that the defect that a wheel diameter modifying mode in the prior art is simple, and when the wheel diameter exceeds a certain specific value, correction or repeated and intermittent correction is needed is overcome.

Description

technical field [0001] The invention relates to the technical field of locomotive wheel diameter calibration, in particular to a radar-based automatic wheel diameter calibration device and method. Background technique [0002] The long-term operation of the locomotive leads to wear of the wheels, and the reduction of the wheel diameter causes the calculated locomotive speed to be greater than the actual locomotive speed. smoothness. Moreover, when the wheel diameter values ​​of different axles of the locomotive are different, the traction torque applied by different axles needs to be different to ensure the smooth operation of the locomotive. Therefore, TCMS needs to increase the automatic calibration function of the wheel diameter to meet the requirements of the smooth operation of the locomotive. [0003] At present, there are mainly several methods for automatic calibration of locomotive wheel diameters, but they all have certain shortcomings to varying degrees. [000...

AI Technical Summary

Problems solved by technology

[0005] Disadvantage 1: The accuracy of satellite positioning is low

The satellite positioning of the locomotive is for civilian use, and the error range of 3 meters will lead to deviations in the calibration value of the wheel diameter

[0006] Disadvantage 2: narrow scope of application

The two wheel diameter calibration detection points and the line between the two wheel diameter calibration detection points are usually set in areas with the same altitude. Areas with changing altitudes will lead to distance accuracy errors between the wheel diameter calibration calibration points obtained through satellite positioning. value expansion

[0007] Disadvantage 3: Strict conditions for wheel diameter correction

[0009] Disadvantage 1: narrow scope of application

The reference standard setting makes it difficult to meet the automatic calibration conditions of the wheel diameter

[0010] Disadvantage 2: The wheel diameter modification method is simple

The average value of the wheel diameter is used to directly replace the original wheel diameter value, resulting in repeated correction of the wheel diameter value, and at the same time, a large range of wheel diameter value modification will lead to the smooth operation of the locomotive

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