Tire pressure sensor device and its setting method

A tire pressure sensor device comprises:

• a processor and memory unit, a pressure sensor electrically coupled to said processor and memory unit for sensing the internal pressure of a tire of a vehicle, a temperature sensor electrically coupled to said processor and memory unit for sensing the internal temperature of said tire of said vehicle, an acceleration sensor electrically coupled to said processor and memory unit for sensing the acceleration value of said tire of said vehicle, a LF (low frequency) transmission interface and a RF (radio frequency) transmission interface respectively electrically coupled to said processor and memory unit for transmitting the sensed temperature, pressure and acceleration data to an on-vehicle receiver by a low frequency or radio frequency, a battery pack electrically coupled to said processor and memory unit for providing the tire pressure sensor device with the necessary working power supply, and an infrared receiver electrically coupled to said processor and memory unit for receiving an external infrared signal.