Low Frequency Receiver with Magnetically Sensitive Detector

• US 20070096888A1
• Filed: 10/06/2006
• Published: 05/03/2007
• Est. Priority Date: 10/10/2005
• Status: Abandoned Application

• Current Assignee: Infineon Technologies Sensonor AS (Infineon Technologies AG)
• Original Assignee: Infineon Technologies Sensonor AS (Infineon Technologies AG)
• Inventors: Blixhavn, Bjorn
• Application Number:
  US11/539,192
• Publication Number:
  US 20070096888A1
• Time in Patent Office: Days
• US Class Current: 340/445
• CPC Class Codes: B60C 23/0425 Means comprising permanent magnets, e.g. Hall-effect or Reed-switches
• CPC Class Codes: G01D 21/00 Measuring or testing not otherwise provided for

Abstract

A receiver for a wheel module of a tire pressure monitoring system (TPMS) includes: a giant magnetoresistive (GMR) detector element; a receiver element, and a signal processor connected to the detector and receiver elements. The receiver is arranged to detect a low frequency signal transmitted by a tire pressure monitoring system (TPMS) transmitter.

Claims

1. A tire pressure monitoring system (TPMS) comprising a wheel module including a receiver, the receiver comprising:

a giant magnetoresistive (GMR) detector element;

a receiver element; and

a signal processor connected to the detector and receiver elements;

wherein the receiver is arranged such that the GMR detector element detects a low frequency signal transmitted by a TPMS transmitter.

2. The system according to claim 1, wherein the detector element comprises a film.

3. The system according to claim 1, wherein the detector element is deposited on the surface of an integrated circuit.

4. The system according to claim 2, wherein the detector element is deposited on the surface of an integrated circuit.

5. The system according to claim 1, wherein the receiver element is tuned to a frequency between 80 and 170 kHz inclusive.

6. The system according to claim 4, wherein the receiver element is tuned to 125 kHz.