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Sensor arrangement for measuring speed of electro-motor of automatic park brake of motor vehicle, has magnet wheel comprising multiple magnetic poles, and hall elements arranged along circumference of magnet wheel in phase-displaced manner
Sensor arrangement for measuring speed of electro-motor of automatic park brake of motor vehicle, has magnet wheel comprising multiple magnetic poles, and hall elements arranged along circumference of magnet wheel in phase-displaced manner
The arrangement has a magnet wheel (11) comprising multiple magnetic poles (12, 13), and hall elements (2, 3) arranged along a circumference of the magnet wheel. The hall elements are arranged in a phase-displaced manner around an electrical angle of plus or minus ninety degree. The hall elements are arranged at an electrical supply conduit (9) of an electromotor. A supply conduit of the hall elements and the electromotor are guided on a common plug pin. The supply conduit of the hall element is connected with the supply conduit of the electromotor. An independent claim is also included for a method for determining the speed of the electro-motor.
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