This paper presents a method of wireless measurement of pressure and temperature of air in a car wheel with Tire Pressure Monitoring System - one of the modern safety systems used in the automotive industry. The readings were performed on a specially designed test bench. It was described a construction and operating principle of key elements of this test bench allowing work with sensors, TPMS module, reference instruments, and the format of data and correctness of data transmission between TPMS and host computer. The created software for embedded system emulating real on-board computer let to observe the uncorrected sensor readings and the effect of calibration in two points of characteristic.
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