System and method for detecting geometric quantity of portable track through MEMS gyroscope

Abstract

The invention discloses a system and method for detecting the geometric quantity of a portable track through an MEMS gyroscope. The system is characterized by comprising a portable track detector body, the MEMS gyroscope, a speedometer, a left displacement sensor, a right displacement sensor, a signal collecting / conditioning unit and an embedded calculating device, wherein the MEMS gyroscope, the speedometer, the signal collecting / conditioning unit and the embedded calculating device are respectively mounted on the portable track detector body; the left displacement sensor and the right displacement sensor are respectively mounted on the left side and the right side of the portable track detector body; output signals of the MEMS gyroscope, the speedometer, the left displacement sensor and the right displacement sensor successively pass through the signal collecting / conditioning unit and the embedded calculating device. The detecting system and the method disclosed by the invention have the characteristics of compact structure, high reliability, high economy and reasonability and high detection accuracy, and can be widely used for the updating and the upgrading of a traditional portable track detector and have great application potential.

Description

technical field [0001] The invention relates to the detection field of railway track geometric quantities, in particular to a portable track geometric quantity detection system and method using a MEMS gyroscope. Background technique [0002] With the high-speed railway passenger transportation, heavy freight transportation, especially the huge development of high-speed railway, railway transportation has entered a new era. Track quality directly affects the safety and efficiency of railway transportation. In addition to the influence of the locomotive and rolling stock itself, the irregularity of the track state is the main reason for destroying the stability of the train operation. These irregularities include: the unevenness of the track height causes the vehicle to nod violently and the ups and downs vibration; the track level irregularity causes the vehicle to roll and vibrate; Vehicle side swing, shaking head vibration; irregular track gauge will cause wheels to fall ...

AI Technical Summary

Problems solved by technology

Due to the high price of the track inspection instrument based on the total station, a large number of track inspection instruments using the chord method are actually used in railway inspections in my country, but their measurement accuracy is not high

Although the track inspection instrument based on the angle measurement of the fiber optic gyroscope adopts the principle of angle measurement, the measurement accuracy is high, and there is no cumulative error, but in actual use, the fiber optic gyroscope is too precise, the reliability is not high, and the price is high, which limits the measurement based on the measurement to a certain extent. Application of Angle Method to Railway Track Inspection Instrument

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