Three-dimensional monitoring in the area of an elevator by...

Elevator – industrial lift truck – or stationary lift for vehicle – With barrier for regulating access to load support – Includes motor or motor driven linkage for shifting barrier

Reexamination Certificate

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Details

C187S391000

Reexamination Certificate

active

07140469

ABSTRACT:
A device for monitoring an elevator area utilizes a three-dimensional semiconductor sensor for detecting three-dimensional image information. The sensor includes a light source that is mounted so that the elevator area to be monitored is disposed in the illuminated area of the light source, a sensor group that is mounted in such a manner that it receives reflected light, and a processing chip for converting the electrical signals into image information. In addition, the device includes a processing device that is connected with the semiconductor sensor in order to make available three-dimensional image information. The processing device processes the image information in order to obtain state information representing the state of the elevator area to be monitored.

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Jeremias, Ralf et al., “A CMOS Photosensor Array for 3D Imaging Using Pulsed Laser”, Tech. Digest, IEEE Int'l Solid State Circuits Conference (ISSCC 2001), San Francisco, CA, pp. 252-3, 452-3.

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