| 摘要 |
<p>A movement sensor has a spherical body (14) freely movable within a chamber (12). Radiation (21, 22) is passed through the chamber (12) from at least two different sources (16, 19). Detectors (17, 18) opposite the radiation sources (16, 19) produce signals responsive to the amount of detected radiation which is dependent on the position of the spherical body (14) relative to the chamber (12).</p> |
