Process and device for operating a rain sensor
First Claim
1. An apparatus for operating a rain sensor (10) which is used for automatic triggering of a device, in particular a windshield wiper for motor vehicles, having a transmitter (12), a receiver (14) whose sensor signal (18) as a function of detected moisture is delivered to a signal processor (20) and to an evaluation arrangement (34) downstream thereof, and a controller (16), which has a function of the sensor signal (18, 22) outputs a control signal (28) to the rain sensor (10), wherein in addition to outputting the control signal to the rain sensor (18, 22), the control signal (28) is also separately delivered to the evaluation arrangement (34) for tripping switching events of the device, and the controller (16) regulates a transmission power of the rain sensor (10).
1 Assignment
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Accused Products
Abstract
An apparatus and a method for operating a rain sensor (10) that outputs a sensor signal (18, 22) as a function of the wetting of a window (11) are proposed, having a controller (16) which as a function of the sensor signal (18, 22) outputs a control signal (28) to the rain sensor (10) for regulating the sensor signal (18, 22); for signal evaluation, the sensor signal (18, 22) and in addition the control signal (28) are used for tripping switching events of a device.
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Citations
10 Claims
- 1. An apparatus for operating a rain sensor (10) which is used for automatic triggering of a device, in particular a windshield wiper for motor vehicles, having a transmitter (12), a receiver (14) whose sensor signal (18) as a function of detected moisture is delivered to a signal processor (20) and to an evaluation arrangement (34) downstream thereof, and a controller (16), which has a function of the sensor signal (18, 22) outputs a control signal (28) to the rain sensor (10), wherein in addition to outputting the control signal to the rain sensor (18, 22), the control signal (28) is also separately delivered to the evaluation arrangement (34) for tripping switching events of the device, and the controller (16) regulates a transmission power of the rain sensor (10).
- 8. A method for operating a rain sensor (10) which is used for automatic triggering of a device, in particular a windshield wiper for motor vehicles, having a transmitter (12), a receiver (14) whose sensor signal (18) as a function of detected moisture is delivered to a signal processor (20) and to an evaluation arrangement (34) downstream thereof, and a controller (16), which is a function of the sensor signal (18, 22) outputs a control signal (28) to the rain sensor (10), wherein in addition to outputting the control signal to the rain sensor (18, 22), the control signal (28) is also separately delivered to the evaluation arrangement (34) for tripping switching events of the device, and the controller (16) regulates a transmission power of the rain sensor (10).
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10. A method for operating a rain sensor (10) which is used for automatic triggering of a device, in particular a windshield wiper for motor vehicles, having a transmitter (12), a receiver (14) whose sensor signal (18) is delivered to a signal processor (20) and to an evaluation arrangement (34) downstream thereof, and a controller (16), which is a function of the sensor signal (18, 22) outputs a control signal (28) to the rain sensor (10), wherein in addition to the sensor signal (18, 22), the control signal (28) is also delivered to the evaluation arrangement (34) for tripping switching events of the device, the evaluation arrangement (34) evaluates the sensor signal (18, 22) if the control signal (28) is constant, and if the control signal (28) is varying, it evaluates the control signal (28) independently of the sensor signal (18, 22) for tripping switching events of the device.
Specification