18476777. ICE BLOCKAGE DETECTION AND MITIGATION FOR ULTRASONIC SENSORS (Robert Bosch GmbH)
ICE BLOCKAGE DETECTION AND MITIGATION FOR ULTRASONIC SENSORS
Organization Name
Inventor(s)
Michael T. White of Livonia MI US
Paul J. Connor of Belleville MI US
Majed J. Sabbagh of Northville Township MI US
ICE BLOCKAGE DETECTION AND MITIGATION FOR ULTRASONIC SENSORS
This abstract first appeared for US patent application 18476777 titled 'ICE BLOCKAGE DETECTION AND MITIGATION FOR ULTRASONIC SENSORS
Original Abstract Submitted
Systems and methods for ice removal system for an ultrasonic sensor. One example system includes the ultrasonic sensor including a transducer and an electronic processor. The electronic processor is configured to output, at the transducer, a chirp signal. The electronic processor is configured to determine, based on the chirp signal, whether a mechanical impedance is present at the transducer. The electronic processor is configured to, in response to determining that the mechanical impedance is present, output, at the transducer, a frequency sweep signal. The electronic processor is configured to receive, at the transducer, a reflected frequency sweep signal. The electronic processor is configured to determine, based on the reflected frequency sweep signal, a resonant frequency. The electronic processor is configured to output, at the transducer, an output signal according to the resonant frequency.