| 摘要 |
<p>MOTION DISCONTINUANCE DETECTION SYSTEM AND METHOD A motion detection system is disclosed which utilizes a lens or other imaging means to be responsive to motion in a particular field of view in a room, for example, and pass illumination to a photoelectric means. The photoelectric cell or a screen in front thereof establishes an image distortion means so that there is a nonuniform electrical output from the photosensitive means upon motion of objects in the given field of view. The nonuniform electrical output establishes pulses which are passed to a timer and continually reset the timer so long as there is motion detected. Upon discontinuance of any motion in the field of view, no further pulses are passed to reset the timer, and the timer times out to de-energize an electrical load. This may be an electrical lamp illuminating the field of view, or it may be an electric soldering iron or typewriter which is de-energized when the person has left the room. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.</p> |
