Reflective object detecting apparatus
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United States of America Patent
Stats
-
Jun 16, 1987
Grant Date -
N/A
app pub date -
Feb 28, 1986
filing date -
Feb 28, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A plurality of ultrasonic transmitting elements and ultrasonic receiving elements are provided and are electrically switched in a sequential manner to change a region over which the existence of an object is to be detected, thus allowing the existence of an object to be detected over an extended range. The distance to the object and a particular region in which it is detected are displayed. The ultrasonic transmitting elements and the ultrasonic receiving elements are alternately disposed in a linear array. When switching the region over which the existence of an object is to be detected, the switching of the ultrasonic transmitting elements takes place in an alternate fashion with the switching of the ultrasonic receiving elements, thus changing the region at an interval corresponding to one pitch with which the elements are disposed in the array.
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Cited Art Landscape
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