| Summary: | 碩士 === 逢甲大學 === 自動控制工程所 === 94 === In this research, we will integrate the wireless communication technique and automatic measuring technique to design and construct the wireless tire pressure monitoring system–TPMS. Advancing the ways of improving the stability and accuracy of wireless transmission TPMS and enhancing the function of TPMS to solve the problem on manufacturing. For example, automatically setting the identification codes of transmitters and warning value. We can also use these ways to decrease these problems on manufacturing TPMS. In final, this research provides the design of bi-directional TPMS. This system consists of four wireless sensors, four low frequency triggers and one central receiver. Tire pressure and temperature in tires are measured by the sensor’s characteristics of the variation of capacitance for varying pressure on other hand resistance for varying temperature. By using the wireless transmission sends the measuring signal to the central receiver. It’s processed by micro- controller and display on an instrument panel. The power of wireless sensor is provide by battery, so the power management of wireless sensor is an important technology of TPMS. In this research, we will install low frequency triggers external tires to control the power consumption of the wireless sensors.
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