Power supply using static magnetic field of tire pressure monitoring system

• US 7,541,916 B2
• Filed: 11/07/2005
• Issued: 06/02/2009
• Est. Priority Date: 01/24/2005
• Status: Active Grant

• Current Assignee: Hyundai AMCO Company Limited (Hyundai Mobis Co., Ltd.)
• Original Assignee: Hyundai AMCO Company Limited (Hyundai Mobis Co., Ltd.)
• Inventors: Kwon, Dae Hyuk, Na, Heu Kyong, Lee, Won Jo, Choi, Sang Hoon, Kim, Sang Kook, Chun, Dong Pil
• Primary Examiner(s): POPE, DARYL C
• Application Number:
  US11/163,999
• Publication Number:
  US 20060176163A1
• Time in Patent Office: 1,303 Days
• Field of Search: 340/442, 340/426.33, 340/445, 340/447, 340/448, 731/462, 731/464
• US Class Current: 340/426.33
• CPC Class Codes: B60C 23/0408 transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver

Abstract

A power supply using a static magnetic field of a tire pressure monitoring system is provided. The power supply includes: a static magnetic field generator installed at a car position adjacent to a tire, and generating the static magnetic field; 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.

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.

2. 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 a permanent magnet; 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.