Position detector for track mounted surveillance systems
First Claim
Patent Images
1. A mechanism comprising:
- a track;
a carriage moveable along said track;
a wheel fixed to said carriage, said wheel rotating as said carriage moves along said track;
a mark disposed on a portion of said wheel;
a detector fixed to said carriage for sensing said mark as said wheel rotates and outputting a signal indicative of said mark being sensed by said detector;
a carriage processor for receiving said signal and determining the position of said carriage along said track; and
at least one limit switch disposed at a predetermined position on the track, said at least one limit switch detecting the presence of said carriage and outputting a limit signal to said carriage processor indicating position of said carriage.
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Abstract
A mechanism for detecting the position of a carriage moveable along a track. The mechanism includes a wheel fixed to the carriage which rotates as the carriage moves along the track. A mark is disposed on a portion of the wheel. A detector is fixed to the carriage for sensing the mark as the wheel rotates and outputs a signal in response. A carriage processor receives the signal and determines the position of the carriage along the track.
12 Citations
8 Claims
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1. A mechanism comprising:
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a track;
a carriage moveable along said track;
a wheel fixed to said carriage, said wheel rotating as said carriage moves along said track;
a mark disposed on a portion of said wheel;
a detector fixed to said carriage for sensing said mark as said wheel rotates and outputting a signal indicative of said mark being sensed by said detector;
a carriage processor for receiving said signal and determining the position of said carriage along said track; and
at least one limit switch disposed at a predetermined position on the track, said at least one limit switch detecting the presence of said carriage and outputting a limit signal to said carriage processor indicating position of said carriage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification