Ultrasonic sensor
AssigneeRobert Bosch GmbH
InventorsPetko Faber, Christian Danz
Life of this patent
Estimating the term…
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.
Claims14
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,
- wherein a switched-on state of a windshield wiper is used as an indicator for adjusting sensitivity parameters.
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 of at least one ultrasonic sensor to a plausibility check, for recognition of at least one of (e) a curb and (f) outer contours of parked vehicles,
- wherein a switched-on state of a windshield wiper is used as an indicator for adjusting sensitivity parameters.
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:
- 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,
- wherein a switched-on state of a windshield wiper is used as an indicator for adjusting sensitivity parameters.
Dependencies are inferred from the claim text.