Ultrasonic Sensor
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Accused Products
Abstract
For an ultrasonic sensor at least one sensitivity parameter or sensitivity characteristics curve may be adjusted as a function of the air humidity and/or temperature in such a way that a predefined range or a range section may be reliably reached. Such a sensor makes it possible to reliably detect curbs, and to locate parking spaces, including curb detection under varying weather conditions.
24 Citations
20 Claims
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1-9. -9. (canceled)
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10. An ultrasonic sensor comprising:
a sensor element having one of (a) at least one sensitivity parameter and (b) a sensitivity characteristics curve that is adjustable as a function of at least one of (c) an air humidity and (d) a temperature in such a way that a predefined range or a range section may be reached. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method using an ultrasonic sensor including a sensor element having one of (a) at least one sensitivity parameter and (b) a sensitivity characteristics curve that is adjustable as a function of at least one of (c) an air humidity and (d) a temperature in such a way that a predefined range or a range section may be reached, the method comprising:
subjecting a plurality of ultrasonic pulse measurements to a plausibility check, for recognition of at least one of (e) a curb and (f) outer contours of parked vehicles. - View Dependent Claims (19)
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20. A method using an ultrasonic sensor including a sensor element having one of (a) at least one sensitivity parameter and (b) a sensitivity characteristics curve that is adjustable as a function of at least one of (c) an air humidity and (d) a temperature in such a way that a predefined range or a range section may be reached, the method comprising:
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as a function of a signal evaluation of at least one ultrasonic sensor, ascertaining a length and a depth of a parking space; and as a function thereof, ascertaining an optimal parking trajectory into the parking space.
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Specification