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To solve the problem of vehicle recorder data management under no-operating system, a vehicle recorder file management system is proposed with strong specificity,160G storage,and is easy to expand.The vehicle large-capacity recorder consists of control module, memory module,power module and various acquisition interfaces,and processes effective management on files by creating indexes,storing data and accessing real-time data,index and historical data.The large-capacity vehicle recorder has performed stably in the temperature cycle test,high temperature experienced test,electromagnetic compatibility test and vibration test,etc.The recorder has fast data access speed and large storage capacity.It has been used in engineering practice.