TIRE AND ELECTROMAGNETIC WAVE FEEDING SYSTEM WITH SAME

摘要

PROBLEM TO BE SOLVED: To provide a tire enabling feeding of power required for driving a detection device detecting air pressure and temperature in the tire from outside thereof. SOLUTION: A plurality of independent circular closed loop conductive foils with prescribed line width are provided in the inner side surface of the tire 50 without a metal mesh or metal wire attached to a wheel 43. An electromagnetic wave feeding system is provided with an external antenna 80 outside the tire 50, an internal antenna 77 inside the tire 50, and a power source means. The external antenna 80 radiates a high frequency magnetic field to the tire 50 to make the conductive foils generate an induced alternating current. The internal antenna 77 receives the high frequency magnetic field generated by the induced alternating current generated in the conductive foils 53, and outputs a reception signal. The power source means is attached to the inside of the tire 50, and it rectifies the reception signal into direct-current electric power and feeds driving power to the detection device 70 detecting a prescribed condition in the tire 50. COPYRIGHT: (C)2008,JPO&INPIT