Tire air pressure sensor unit, tire air pressure monitoring system, and method of recording self-identification codes for air tire pressure unit
First Claim
1. A tire pressure sensor unit having a pressure sensor installed in a tire wheel of a vehicle to sense tire pressure of the tire wheel, a transmitter transmitting information at least about the tire pressure to a pressure monitor provided on the vehicle, and a fixing memory for storing data including data of self-identification code specific for the sensor unit, characterized in that said tire pressure sensor unit comprises an interface for importing signals input from external sources, and is so configured that storage the data in the fixing memory can be rewritten by the external signal imported from the interface.
1 Assignment
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Accused Products
Abstract
A sensor unit body 10 of a tire pressure sensor unit 1 is provided with external signal-importing terminals 22 for rewriting data of self-identification code stored in a ROM 21, so that a complex operation of associating the self-identification code of the sensor unit with its mounting position in the vehicle is eliminated by rewriting the self-identification code of the sensor unit 1 after the replacement to be identical to the self-identification code of the sensor unit 1 before the replacement, when a tire wheel is replaced due to a breakdown of the tire unit or a replacement between a summer tire and a winter tire.
31 Citations
6 Claims
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1. A tire pressure sensor unit having a pressure sensor installed in a tire wheel of a vehicle to sense tire pressure of the tire wheel, a transmitter transmitting information at least about the tire pressure to a pressure monitor provided on the vehicle, and a fixing memory for storing data including data of self-identification code specific for the sensor unit, characterized in that
said tire pressure sensor unit comprises an interface for importing signals input from external sources, and is so configured that storage the data in the fixing memory can be rewritten by the external signal imported from the interface.
Specification