| 摘要 |
This invention provides an optical sensing system for detecting displacements of a slidable frame along an elongated plate of the system and generating corresponding position or displacement signals. The optical sensing system comprises a housing, an elongated plate horizontally installed in the housing having a plurality of positioning holes and a plurality of parallel conductors installed in it, a slidable frame having a sliding hole in its middle for slidably engaging the elongated plate, an optical sensor installed in the frame and slidably wired to the parallel conductors of the elongated plate for detecting the positioning holes of the elongated plate and generating corresponding sensing signals, and a control circuit wired to the parallel conductors of the elongated plate for converting the sensing signals into corresponding position signals or displacement signals.
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