Active infrared presence sensor
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United States of America Patent
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Mar 23, 2004
Grant Date -
Feb 6, 2003
app pub date -
Aug 2, 2001
filing date -
Aug 2, 2001
priority date (Note) -
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Abstract
A presence detector includes an optical emitter for emitting optical radiation, an optical detector for detecting a presence of an object based on receiving the optical radiation, and a microcontroller for controlling the optical emitter and processing the optical detector output, such that a range adjustment and range hysteresis based on the object are provided by software in the microcontroller.
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