| US 7,541,916 B2 | ||
| Power supply using static magnetic field of tire pressure monitoring system | ||
| Sang Hoon Choi, Icheon-shi (Korea, Republic of); Dong Pil Chun, Icheon-shi (Korea, Republic of); Dae Hyuk Kwon, Icheon-shi (Korea, Republic of); Sang Kook Kim, Icheon-shi (Korea, Republic of); Heu Kyong Na, Icheon-shi (Korea, Republic of); and Won Jo Lee, Icheon-shi (Korea, Republic of) | ||
| Assigned to Hyundai Autonet Co., Ltd., Icheon-shi, Kyungki-do (Korea, Republic of) | ||
| Filed on Nov. 07, 2005, as Appl. No. 11/163,999. | ||
| Claims priority of application No. 10-2005-0006217 (KR), filed on Jan. 24, 2005. | ||
| Prior Publication US 2006/0176163 A1, Aug. 10, 2006 | ||
| Int. Cl. B60R 25/10 (2006.01) | ||
| U.S. Cl. 340—426.33 [340/445; 340/442; 340/447; 340/448; 73/146.2] | 2 Claims |
| 1. A RFID (Radio Frequency Identification) tag power supply using a static magnetic field of a RFID TPMS (tire pressure monitoring
system), which has a sensor for periodically measuring a tire pressure and generating tire pressure data and a transmitter
for storing the measured tire pressure data and loading and transmitting the tire pressure data on a radio frequency, the
power supply comprising:
a static magnetic field generator installed at a portion of a car adjacent to a tire, and generating a static magnetic field,
wherein the static magnetic field generator comprises an electromagnet powered by a car battery; and
an EMF (ElectroMotive Force) coil installed at the tire, and generating an induced electromotive force by the generated static
magnetic field and a relative motion resulting from rotation of the tire, and providing the generated electromotive force
to the transmitter and the sensor.
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