| Vehicle Travelling Data Recorder (VTDR) is a digital electronic device, which can record vehicle speed, real time, mileage and vehicle's other status information. VTDR is important to hold back traffic peccancies such as tired-driving, overspeed, and it is also important for authenticating and analyzing traffic accident. A whole VTDR system includes two parts, one is the mainframe and the other is the managing and analyzing software.This thesis mainly describes hardware and software designing of VTDR mainframe. VTDR developing background is first introduced in the first chapter. Then domestic and oversea developing actualities are summarized, and based on the summarization the aim of VTDR developing is set forth. In the following part, the thesis discusses the designing conception of the whole system and different plans of each function module. At last, the final designing plan is described in detail.In the system software designing unit, the thesis introduces software developing environment — ARM ADS. Also, the debugging method and the flow chart of each function module are dissertated, in which part the function interfaces are emphasized.In the system testing unit, hardware testing and software testing are discussed. Each problem found during debugging step is detailedly described and analysed.In the last chapter, the thesis put forward the summarization and the prospect as the whole end. |
