| 摘要 |
PURPOSE: A system for measuring a shuttle run is provided to reduce a range of an error within 1m by using an optic sensor instead of a naked eyes. CONSTITUTION: A sensor(100) contactless-senses the approach of a target by a sensor which is fixed by a support at both sides of a plurality of lanes. A photo electronic control sensor has a light-transmitting part and a light receiving part which are one body in one side thereof and also includes a reflector in the other side. A display unit(300) displays a signal which is transmitted from the controller.
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