Track curve parameter measuring device and method

Abstract

A rail curve parameter measuring device comprises a fixed measuring vehicle which is provided with an electronic total station, a vehicle mounted computer and a fixed vehicle global positioning system; a movable measuring vehicle which is provided with a front-end reflection object, a movable global positioning system, a wireless data transmission system and a tilt angle sensor; and a global positioning system base station. The method comprises the following steps: the search range of the total station to the front-end reflection object is calculated and the total station is controlled to turn to the position through the RTK-GPS measurements of geodetic coordinates of the movable measuring vehicle and the fixed measuring vehicle at the both ends of the rail section; the total station locks the front-end reflection object and measures the coordinate data thereof within the designated range, the vehicle mounted computer calculates the current rail parameters according to the coordinate and the value of the tilt angle sensor; the movable vehicle is driven to the fixed vehicle along the rail, and the vehicle mounted computer continuously calculate the rail parameters according to the new data. The rail curve parameter measuring device combines the GPS measurement and the total station optical measurement to realize the rail parameter measurement, utilizes the GPS data to control the direction orienteering of the total station, and allows the total station to carry out the precise measurement.

Description

technical field [0001] The invention relates to a device and method for measuring track curve parameters. Background technique [0002] There is always a certain error between the static curve shape of the railway track and its design value. The existence of the error makes the actual value of the rail track a fluctuation curve around its design value. When a measuring ruler is used to measure this fluctuation, it is longer than the fluctuation of the measuring ruler. It cannot be measured, therefore, special devices must be used to measure in a large scale to eliminate the influence of long waves. At present, there are several track measurement devices that eliminate long waves, but most of them are based on laser and a tracking target. Among them, Plasser-Tauer Company is the most typical. It consists of a fixed-point measuring vehicle, a laser emitting device, and a moving target that can track the laser. When the measuring vehicle walks along the rail, the target moves ...

AI Technical Summary

Problems solved by technology

Its shortcoming is that it is only used for long straight line interval operations. In these devices, the laser beam is fixed, and the laser target is moving. The moving range of the laser target is limited. When the deviation angle between it and the laser emission point is too large Work

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