Device for controlling a drive mechanism for an automotive accessory
First Claim
1. Device for controlling a drive mechanism (70) for an automotive accessory, havinga sensor (3) reacting to wetness on the outside of a vehicle, said sensor producing a signal with a parameter dependent on a degree of wetness on the outside of the vehicle, anda device (83) for actuating the drive mechanism (70) dependent on the size of the parameter of the signal coming from the sensor (3),characterized by a device (120 to 131, 132 to 143) for detecting the amount of variation of the parameter with time and an additional device (225,221;
- 252,260;
320,343) for actuating the drive mechanism (70) when there is a preset amount of variation of the parameter with time.
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Accused Products
Abstract
The invention concerns a device for controlling a drive mechanism (70), e.g. for windshield wipers (5, 6), wiping/washing systems, sliding roofs and tops of motor vehicles dependent on how moist or dirty the windshield is on the outside. With help of a sensor (3) and a special computation circuit, the degree and type of moisture or dirt can be ascertained. Depending on whether or not there is only a fine mist or a heavy thundershower, the appropriate circuits on the windshield wipers (5, 6), sliding roofs or tops are automatically actuated. If dirt is detected on the windshield (2), then a wiping/washing system is switched on. Sudden splashes on the windshield, which appear just before the last wiping action of a wiper (5, 6) is completed, are definitely detected and lead to a new wiping action.
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Citations
26 Claims
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1. Device for controlling a drive mechanism (70) for an automotive accessory, having
a sensor (3) reacting to wetness on the outside of a vehicle, said sensor producing a signal with a parameter dependent on a degree of wetness on the outside of the vehicle, and a device (83) for actuating the drive mechanism (70) dependent on the size of the parameter of the signal coming from the sensor (3), characterized by a device (120 to 131, 132 to 143) for detecting the amount of variation of the parameter with time and an additional device (225,221; - 252,260;
320,343) for actuating the drive mechanism (70) when there is a preset amount of variation of the parameter with time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
- 252,260;
Specification