Tire Pressure Monitoring System Design Studies

Tire Pressure Monitoring System (TPMS) is used to monitor the pressure of the vehicle's tire. It can alarm the driver to ensure the safety of the peoples in the car while the pressure of the tires is abnormal.The direct and indirect TPMS's advantages and disadvantages were discussed. Also, the direction of the TPMS was discussed. The mainly causation of the tire blow-out and the tire's working condition were analysed in detail. The mainly causation of the tire blow-out were gained which is the over pressure, the low-pressure and the over temperature. The general concept of the TPMS was designed based on the conclusion. The general design, man-machine interface and the fixing modes of TPMS's tire module were given out. Also, the chiefly components were chosen. The TPMS were designed in detail based on the total design.The system is composed by one alarming module and four tire modules. The data can transmit by wireless signal between the alarming module and tire modules. The system of hardware and the software were designed by modularization. The low power and the small dimension was considered while design the tire module. In order to reduce the power of the tire module, the data was designed to transmit after compared by the threshold. The alarming module used the sound, the light and the data displayed in the Liquid Crystal Display to remind the driver while the pressure was abnormal. In order to improve the antiinterference ability of the wireless data transmission, the mode of Frequency Shift Keying and Cyclic Redundancy Code was chosen.The technology of the sensors, Micro Control Unit and wireless communication were used to design the prototype of the TPMS. It was testified that the TPMS designed is feasible and worth to use.