Patent ID: 7504934
Filing Date: 2009-03-17
Classification: B60C

Abstract:
1. A tire condition information collection apparatus for detecting a predetermined physical characteristics of a vehicle tire to inform a driver or an administrator of information on a tire condition, the tire condition information collection apparatus comprising: a plurality of detection apparatuses mounted on each tire; a plurality of relay apparatuses disposed in a predetermined vehicle side position in a vicinity of each tire; and a main apparatus for informing the driver or administrator of a result of detection of the physical characteristics of the tire, the tire condition information collection apparatus characterized in that the detection apparatus includes: a sensor circuit which detects a predetermined first physical characteristic within the tire to output an electrical signal corresponding to the first physical characteristic; and wireless communication means for wirelessly transmitting the result of detection as information within the tire by use of an electromagnetic wave of a first frequency based on the electrical signal outputted from the sensor circuit, and the relay apparatus includes: reception means for receiving the information within the tire transmitted from the wireless communication means of the detection apparatus; outside-tire information detection means for detecting a predetermined second physical characteristic outside the tire in a vicinity of the self apparatus as information outside the tire; transmission means for wirelessly transmitting the information within the tire and the information outside the tire by use of an electromagnetic wave of a second frequency; means for holding specific identification information for each relay apparatus; and means for transmitting the identification information of the relay apparatus along with the information within the tire and the information outside the tire, and a main apparatus includes: reception means for receiving the information within the tire and the information outside the tire transmitted from the relay apparatus; information correction means for correcting the first physical characteristic based on the information within the tire by use of the second physical characteristic based on the information outside the tire according to the received information within the tire and information outside the tire; and information informing means for informing of the information corrected by the information correction means as information on the tire condition.