Patent ID: 7512467

Claim:
A tire air pressure surveillance system for a vehicle comprising: a plurality of air pressure detecting devices disposed in a plurality of tires of the vehicle respectively, to detect an air pressure in each of the tires and to send by radio detected results of the air pressure detecting devices along with distinguishing information which is used to distinguish each of the air pressure detecting devices; a plurality of receiving devices for receiving the detected results sent from the air pressure detecting devices; and a monitor device for monitoring the air pressure in each of the tires based on the detected results received by the plurality of receiving devices, wherein: the monitor device and the plurality of receiving devices are separate from each other and are connected with each other through a cable signal channel; the monitor device includes a memorizing means for memorizing the distinguishing information of all the air pressure detecting devices as determination information, and a determination-information sending means for sending the determination information memorized in the memorizing means to all of the plurality of receiving devices every a predetermined timing; and the plurality of receiving devices include a received-information memorizing means for memorizing the determination information received from the monitor device as received determination information, and a detected-result determining and sending means that determines whether the distinguishing information of detected results corresponds to the received determination information among the detected results received from the air pressure detecting devices, and sends the detected results along with the distinguishing information corresponding to the received determination information to the monitor device, wherein the determination-information sending means broadcast-sends the determination information of all the air pressure detecting devices to all of the plurality of receiving devices.