Browse Publications Technical Papers 870470
1987-02-01

MRE Rotation Sensor: High-Accuracy, High-Sensitivity Magnetic Sensor for Automotive Use 870470

A high-accuracy automotive rotation sensor with high-sensitivity has been developed using a ferro-magnetic resistance element, called MRE, which we have recently developed. This sensor composed of MRE and a multi-pole magnet, is a compact, environmental-resistive, low rpm detectable device with high hybrid circuit density including an electric signal processing circuit.
The new sensor is especially designed for generating a double-frequency output to ensure a duty ratio for precise detection of rotation. The sensor is now used as a vehicle speed sensor capable of measuring from low rpm to high rpm, mounted directly onto the transmission.
The sensor is not only considered to be a riable alternative to the conventional rotation sensor, but will be used in an expanding number of applications.

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