TIRE WATCH SYSTEM

摘要

A tire watch system, where the reception of a radio wave that is transmitted from a sensor device provided in each tire can be performed with high gain by one antenna connected to a watch unit. An antenna (50) connected to a watch unit and receiving a radio wave transmitted from a sensor device (30) arranged at each tire (20) is provided at a window glass (11) of a motor vehicle (1), the antenna (50) preferably having an element, at least portion of the element vertically extending. The shape and location of the antenna (50) that achieve the highest field strength at the position of each tire (20) are obtained through actual measurement by radiating a radio wave from the antenna (50), and this enables the antenna (50) to highly efficiently receive a weak radio wave transmitted from each sensor device (30).