Sensor for distance measurement by ultrasound
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United States of America Patent
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-
Mar 13, 1984
Grant Date -
N/A
app pub date -
Sep 22, 1982
filing date -
Sep 23, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a sensor for performing the distance measuring in accordance with the ultrasound-echo principle, in particular for determining and indicating approaching distances between vehicles and obstacles in close range with an ultrasound transmitter and receiving converter for emitting the ultrasound signals and for receiving the ultrasound signals reflected by the obstacles, whereby the converter consists of an insulated-type transformer with piezo-ceramic resonator disposed thereon, characterized in that dampening material (99) for preventing the energy rich ultrasound emission or reception is provided on the inside of the membrane of the insulator-type transformer on two horizontally opposite disposed circular segments.
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