Research And Development Of Data Acquisition And Processing System For TPMS Based On MATLAB/xPC

The safety of driving a car is a hotspot to people. When a car is running at a high speed, tire blowout is one of the main reasons of the malignant traffic accidents. Running at a high speed for long hours under abnormal pressure, particularly low pressure, is the most primary cause of tire blowout. How to avoid tyre fault effectively is an urgent problem to be solved. Tyre pressure monitoring system emerges as time requires. The research climax is lifted in different countries. By right of advantages of low cost, stable performance and convenient installation, the indirect tyre pressure monitoring system will certainly be popular by getting consumers trust.Designing a high-precision tyre pressure monitoring system, needs to contrast and improve the calculation methods of correlated parameters by collecting a lot of data, and needs to find the most accurate calculation method and values of parameters. This paper uses matlab and its simulation toolbox-Simulink, Real-time Workshop, xPC Target, which is of powerful functions and widely used in research field, to develop a data acquisition and processing system for TPMS.At first, established the simulation models of parameter processing methods using simulink toolbox for TPMS; then constructed a hardware platform based on MATLAB/xPC Target and developed the data acquisition and processing system based on the simulation models. At last, verified functions of data acquisition and processing system by real vehicle test and collecting data in real-time, The system unitizes the data acquisition, model establishing and real-time simulation. It can adjust parameters conveniently and can optimize algorithm. The system modularized the design of tyre pressure monitoring system and laid a foundation for it. Using the tracking mode of xPC, the system can obtain signals and make it visible in the process of running programs in real-time. It can also adjust parameters interactively, so we can observe the influence of the parameters on simulation models conveniently, verifying the advantages of the data acquisition and processing system.The system can also input other vehicle signals, accomplish functions of data acquisition, display, memorizing and copying figure. Adding its friendly interface, this system is also very bit for teaching demonstration.