Analysis And Research Of Data Acquisition System In Vehicle Crash Test

In recent years, auto accidents have caused a large numble of casualties and economic loss in the whole world, which force governments and automobile enterprises to invest much manpower and material resources to vehicle safety research,, Especially in our country, due to the reasons of population and road condition, car accident rates are rising sharply year-by-year. Further more, people now pay more attention to vehicle safety performance than before. All these factors make it urgent for us to establish strict vehicle safety regulations and attach much importance to the field of scientific research to enhance safety.This paper firstly study the development level of vehicle crash, method of test research and relevant regulation. It also introduces some vehicle crash methods and test equipments. In crash test, dummies are very important and indispensable to vehicle dynamic test and research work. Dummies can simulate the shape and interior structure of human body; they are mainly used to assess the injury of passengers in crash. To reflect the response of person resulted from vehicle, dummy specification are also essential. This paper give a introduction to the requirements and program of specification of the Hybrid III's important parts, such as head ,neck, thorax and knee).Measuring is a key technology during the crash test,' which including the signal of acceleration, the force of fix-counterguard and the responses of passengers .The hardware and software of Data acquisition system are the two main points in vehicle base system. They solve the practical problems in the views of microcosmic. It'll be great efficient and convenient for us to design the program in the combination of VB and C++. Construct the data analysis software by Matlab and VBMatrix to deal with test datum. It has the follow functions such as scale transformation, digital filter; synthesize channel-data and print etc. Then access the crash test result by the regulation of FMV208,including head injury, thorax injury and knee injury.