An adjustable vehicle mirror assembly uses a revolution sensor for detecting revolutions of an element in a mirror rotation drive chain. A control circuit uses the revolution sensor control rotation of the mirror to a preset orientation by counting revolutions and controlling a motor power supply and its direction dependent on whether the count indicates that the count of revolutions has reached a preset value. At power down, power up or when a new preset value is defined the control circuit switches to an overrule state in order to calibrate an offset. The control circuit continues operating in the overrule state until a rotation coupling in the mirror assembly reaches a disengaged state or stalls.
AUTOMATICALLY ADJUSTABLE MIRROR ASSEMBLY
2018-12-06
Patent
Elektronische Ressource
Englisch
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G07C TIME OR ATTENDANCE REGISTERS , Zeit- oder Anwesenheitskontrollgeräte / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
Angle-automatically adjustable automobile rearview mirror
Europäisches Patentamt | 2020
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