Method for detecting quality of locomotive electric eddy current velocity sensing pulse generator

Abstract

The invention discloses a method for detecting the quality of a locomotive electric eddy current velocity sensing pulse generator. According to the method, a test system of an electric eddy current velocity sensing pulse generator is adopted. The method includes the following steps that: a time parameter t and a velocity parameter v in a servo velocity adjustment motor are set; the servo speed adjustment motor drives the electric eddy current speed sensing pulse generator to output two paths of oscillation pulses with rotation velocity information through a rotation shaft; the two paths of oscillation pulses with rotation velocity information are processed by an anti-EMI processing device, and then, are transmitted into a frequency voltage converter A and a frequency voltage converter B respectively, and are converted into square-wave pulses with rotation velocity information; the operating velocity v' of a locomotive can be calculated through the two paths of square-wave pulses, and a velocity error d between v' and v is calculated; and the velocity error d is compared with a standard error value, so that whether the electric eddy current velocity sensing pulse generator is qualified or not can be judged. With the method adopted, problems such as inconvenient environment and high cost of the locomotive electric eddy current velocity sensing pulse generator at present can be solved.

Description

technical field [0001] The invention belongs to the technical field of rail locomotive speed measurement, and relates to a method for detecting the quality of a locomotive eddy current speed sensor pulse generator. Background technique [0002] Accurate measurement of train speed and travel distance is an important task to realize automatic control of trains. The core functions of the on-board automatic train protection (ATP) and automatic train driving subsystem (ATO) of automatic train control (ATC) are to realize the safety monitoring of train running status and running speed. At present, eddy current sensors are mostly used in train odometers (speed sensor pulse generators), which are characterized by reliable structure, high measurement accuracy, and relatively easy maintenance, etc., and have been widely used in train speed measurement and positioning systems. [0003] Due to the lack of detection and calibration system of the eddy current speed sensor pulse generator...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for detecting the quality of the locomotive eddy current speed sensor pulse generator, which solves the need to test on the test line for the current locomotive eddy current speed sensor pulse generator test, test and correct the eddy current speed The sensor pulse generator has a long time period, the test environment is inconvenient, and the cost of testing and calibration is high.

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