Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1997-06-16
1999-05-11
Allen, Stephone
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
2502221, 340555, G01V9/04
Patent
active
059029986
ABSTRACT:
A proximity detection apparatus for detecting objects within a predetermined region. The apparatus comprises a transmitter, a receiver, a microcontroller, and a power supply that provides electrical potential to the transmitter, the receiver, and the microcontroller. The microcontroller produces transmitted data bursts to the transmitter, the transmitter emits optical data bursts toward the predetermined region where, if the object is present, the optical data bursts reflect off of the object as return optical bursts. The receiver detects the return optical bursts and transmits received data bursts to the microcontroller. The microcontroller compares the received data bursts against the transmitted data bursts to verify that the object is present in the predetermined region. The microcontroller produces an output signal to control equipment based the object being present or absent from the predetermined region.
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Ham Eardley L.
Olson Gary R L
Pichotta Andrew J.
Allen Stephone
Control Products Inc.
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