| 摘要 |
An active integrated circuit transponder (10) with on-board power supply (14) is mounted in or on a vehicle tire (60). A pressure sensor (50), a tempera- ture sensor (110) and a tire ro- tation sensor (120) are mounted on a substrate (12) along with the integrated circuit transponder chip, the power supply (14) and an antenna (36). Upon receiving an interrogation signal from a re- mote source (80), the transpon- der (10) activates the sensors to sense tire pressure and tempera- ture and transmits an encoded ra- dio frequency signal to the remote source (80) containing serial, en- coded tire identification, tire po- sition on the vehicle, current tire pressure, current tire temperature and accumulated tire revolutions, as well as maximum and/or min- imum tire and temperature pres- sure values encountered over a predetermined time period and other information specific to the tire.
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