Development Of Railway Track Surveying And Checking System

Tow meth of Track Alingnment Irregularity Detecting has two methods,the mid-cord offset method and inertial benchmark method, which are applied to inspecting cars widely. The two methods possess some obvious disadvantage: the data obtained isn' t much accurate and its Repeatability is not highAt present,most of railway check instrument is just only used to check railway that has been builded, but it cann't be used when building railway.As the technique of Unballasted Track has been introduced into China, the railway check instrument cann't be meet the need of the checking railway , building railway and alignment irregularity detecting.This paper introduced Key technique of Unballasted Track It innovatively used the total station as a sensor to detect the track exterior geometry condition. And it fused with technology of track alingnment irregularity detecting interior geometry condition. It can complete surveying railway highly efficientely and accurately.It consists of of total station, MCU system, PC manage, anlyse system and others parts. The hardware of GJY-H4 inherited and improved to adapting 3D railway surveying for the system. In software, it had improved the arithmetical precision of the freestation. It had built the arithmetical model of railway track surveying. It realized measure data collected manage and alignment irregularity detecting of 300m wave.the detecting system has high precision, high speed, working guide and realtime anlyse, and so on.The researching findings of this paper has applied to engineering,and has great contributies to construction of China Railway High-speed and Unballasted Track surveying.