TIRE INFORMATION MONITORING DEVICE

PROBLEM TO BE SOLVED: To provide a tire information monitoring device which is a simple device and accurately specifies the arrangement azimuth of a tire which transmits signals. SOLUTION: The tire information monitoring device includes a plurality of antennas 1 of the same number of tires which transmit information, with each of the antennas having the highest directivity among the other antennas to the direction of each tire; a plurality of delay circuits 2 of the same number of the antennas for delaying a reception signal received by each antenna by a delay time which is different from each other; a synthesizer 3 for synthesizing the output signals of all the delay circuits as a time-sequential signal; a sorting device for sorting the signal of the maximum reception level from the time-sequential signal output from the synthesizer; and a tire-specifying device for specifying the antenna which has output a signal whose reception level is determined as being a maximum by the sorting device, and for specifying the tire which has transmitted the information, based on the directivity of the antenna which has output the signal whose reception level is determined as being a maximum. COPYRIGHT: (C)2011,JPO&INPIT