Method and device for acoustically sensing an area

摘要

A method for acoustically sensing an area is described. An acoustic transmit pulse is transmitted into the area by an acoustic transducer and a received signal is acquired with the aid of the transducer, in order to receive the transmit pulse reflected back from the area. Within a post-pulse oscillation time of the transducer, which directly follows the emission of the transmit pulse, the actual phase response of the received signal is determined. In the event the actual phase response deviates from a predefined setpoint phase response, an object is detected within the area. Also described is a device for acoustically sensing an area, which is designed to carry out the method.

主权项

1. A method for acoustically sensing an area, comprising:
emitting an acoustic transmit pulse into the area by an acoustic transducer; acquiring a received signal via the transducer in order to receive a transmit pulse reflected back from the area; within a post-pulse oscillation time of the transducer that directly follows the emitting of the transmit pulse, determining an actual phase response of the received signal; and detecting an object within the area if the actual phase response deviates from a predefined setpoint phase response.