Integrated GMR based Wheel Speed Sensor for Automotive Applications

Author

Kapser, Konrad ; Sterling, James

Author_Institution

Infineon Technol. AG, Munich

fYear

2007

fDate

28-31 Oct. 2007

Firstpage

848

Lastpage

851

Abstract

In this paper we present a novel wheel speed sensor using integrated GMR (Giant Magneto Resistor) technology for automotive applications. Speed sensors are widely used in modern cars especially for safety applications as ABS (anti-locking system) and ESC (electronic stability control) to monitor the speed of each individual wheel. Increasing demand for larger air-gaps and better noise performance (lower jitter) requires sensor principles with higher sensitivity, compared for example to the currently used Hall sensors. The monolithic integration of GMR resistors as sensing elements, together with advanced signal conditioning electronics, provide a smart sensor solution which meets the automotive industry´s high reliability requirements with superior performance.

Keywords

Hall effect transducers; analogue-digital conversion; automotive electronics; giant magnetoresistance; signal processing equipment; Hall sensors; antilocking system; automotive applications; electronic stability control; giant magnetoresistor; integrated GMR; noise performance; reliability requirements; safety applications; signal conditioning electronics; wheel speed sensor; Air gaps; Automotive applications; Control systems; Intelligent sensors; Magnetic sensors; Resistors; Sensor systems and applications; Stability; Vehicle safety; Wheels;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2007 IEEE

Conference_Location

Atlanta, GA

ISSN

1930-0395

Print_ISBN

978-1-4244-1261-7

Electronic_ISBN

1930-0395

Type

conf

DOI

10.1109/ICSENS.2007.4388534

Filename

4388534