The Study Of The Image Thinning Algorithm Based On Fpga And Its Application On The Measurement System For The Railway Gauge

Gauge is one of the basic rail parameters and it has always been one of the necessary parameters to measure ever since the gauge measurement vehicle developed. If the gauge can not be measured precisely, it will lead to weighty rail hidden trouble. In order to adapt to the need of speediness and over loading, to guarantee the train run safely, smoothly and uninterruptedly, we must improve the measurable capacity and optimize the performance .So, it is very important for the rail gauge to be measured precisely and high efficiently and it is still an important research of the train department in every country to be in face.This paper first introduces the developing background and the research status quo of the automatic measurement system for railway gauge and also some knowledge about FPGA. Then it illustrates the structure and the measurement principle of the gauge automatic measurement system. And also it carefully introduces the image thinning .At last I use VHDL to realize the gray thinning algorithm of the gauge automatic measurement system and achieve simulation.Measurement system for railway gauge is an important area of our laboratory. In order to control the cost of the measurement system, satisfy the requirements of high speed and real time in gauge automatic measurement system,improve its performance,based on analysis the characters of the algorithm of the measurement system for railway gauge and the characters of FPGA chips and FPGA systems, We draw a conclusion,that the measurement system based on FPGA can resolve those shortages.