The Research And Design Of Tire Pressure Monitoring System

TPMS is the abbreviated form of Tire Pressure Monitoring System, which is used to get the in-tire parameters and report them to car driver, especially when the tires are in bad condition. With the increase of the mass's self-protect consciousness and the development of related laws, TPMS is increasingly gaining more and more attention, which results in wider and deeper researches into it. Base on this, the general design of tire pressure real-time monitoring and pre-warning system is presented, and the basic function and performance is listed.In the whole the system is made of one receiver module and four tire modules. The tire module has the function of the sampling signal and the transmission, and receiver module has the function of receive of wireless signal, process, alarm and human-machine interaction. It effectively improves anti-interference ability and the reliability that adopt the CRC check-up way and the many-to-one and one-direction wireless communication way of FSK digital frequency modulation. Aiming at the characteristic of bad environment and serious disturbance, many kinds of software and hardware technology, especially the PCB (Printed Circuit Board) design of radio frequency, are applied to improve systematic anti-interference ability, which comprehensively improve systematic dependability and practicability.The thesis synthetically manages the senor technology, microcontroller technology, and wireless communication technology, software engineering, etc., and a whole design process of a Pressure-Sensor Based (PSB) TPMS is described in every detail. Though the systemic analyses, previous test and experiment, it is proved to be with good performance according to testing and it indicates the designed system in the paper has feasibility in theory and technology. Which has simple and practical human-machine interaction ability. So the system has certain practical value and applied prospect.