The invention discloses a low-cost tire pressure early-warning method. Each tire is internally provided with a tire pressure sensor, a temperature sensor and an acoustic surface wave device which is connected with the tire pressure sensor and the temperature sensor on the tire; a plurality of antennas which are used for communication connection of a car and a key in a keyless car entry and self-starting system are multiplexed and taken as an antenna for tire pressure early-warning; all the antennas are in communication connection with the tire pressure sensors, the temperature sensors and the acoustic surface wave devices, respectively; signals are sent into a control device by the antennas, and the control device is internally provided with a tire pressure monitoring system (TPMS) mainframe used for converting the signals into digital signals. According to the method, the antennas in the existing keyless car entry and self-starting system are multiplexed in tire pressure early warning, and other antennas do not need to be additionally arranged, so that the cost is lowered; power supplies do not need to be additionally arranged for the tire pressure sensors of the tires, and the tire pressure sensors are supplied with power by electric energy converted by piezoelectric material, so that the energy is saved.
Low-cost tire pressure early-warning method
2015-05-27
Patent
Elektronische Ressource
Englisch
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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