The Design And Research Of Wireless Tire Pressure Monitoring System

With the socio-economic and science and technology development, road traffic has become the major system of the national economy and the social, economic development, however, traffic accidents following resulted in significant losses about the lives and safety of people and economic development. Puncture is the main cause of traffic accidents, keep driving in standards tire pressure is the key to prevent puncture, Tire pressure detection system (TPMS) which born as a car security system. Tire pressure monitoring system is mainly used for real-time tire pressure and temperature monitoring in the process of driving to protect the occupants of the driving safety when the abnormal state of alarm. The purpose of this research is to develop a wireless RF transmission tire pressure monitoring system which used in motor vehicle.This paper proposed a wireless technology based on the tire pressure monitoring systems programs, gave the overall system design block diagram and explain the system hardware circuit design and software design of the modules. Hardware circuit mainly uses sensor detection technology, single-chip technology and wireless communication technology, transmitter module can detect, deal with the tire pressure and temperature parameters real-time, and transmitted data processed to the receiver module use the way of wireless. Receiver module can calibration data and display the result to inform the driver of the situation of all tires. Software design contains transmitter module and receiver module, specific for transmitter module and receiver module initialization, data measurement and processing, send and receive procedures.Because of the working environment of the automotive interior electronic devices is bad and serious interference around the automobiles. From the system hardware design considerations for anti-jamming, and use software technology to enhance and improve the system of anti-jamming ability, special discusses the design of system PCB circuit board, improves the reliability of the system, ensure long-term stability of the system to run.The system uses effective energy-saving measures, not only in hardware choice with the sleep function chip, but also put the determine function in transmitter module of the software design, reduces the firing frequency of system, thus reducing the energy consumption, ensure not disassembly the tire frequently because of replacement of energy, improve the practicality of the system, therefore it has broad application prospects.