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PROCESS AND APPLIANCE FOR MONITORING A MAGNETIC VARIABLE-RELUCTANCE SENSOR, AND THEIR USE IN MOTOR VEHICLE ELECTRONICS
PROCESS AND APPLIANCE FOR MONITORING A MAGNETIC VARIABLE-RELUCTANCE SENSOR, AND THEIR USE IN MOTOR VEHICLE ELECTRONICS
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机译:磁变率传感器的监测方法及装置及其在汽车电子中的应用
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摘要
The device includes a comparator (4) fed by a quasi-sinusoidal signal (3) delivered by a variable reluctance sensor, for converting alternations of the signal into pulses acceptable by digital computing means. According to the invention, the device includes a selectively connectable feedback resistor (R5) for varying the threshold of the comparator in such a way as to check, at a given frequency of the signal, the correctness of the amplitude of the signal (3) provided by the sensor. The device may be used for the checking of the operational state of a variable reluctance sensor delivering a signal indicating the speed of rotation of a shaft fitted in a motor vehicle.
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