Method and device for acoustically sensing an area
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United States of America Patent
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Feb 9, 2016
Grant Date -
Nov 28, 2013
app pub date -
Dec 2, 2011
filing date -
Dec 14, 2010
priority date (Note) -
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Abstract
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.
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