| 摘要 |
<p>A sensor (10) comrpises a light source (24, 26) and a photosensor (28, 30) for receiving light (32, 34) emitted by the light source (24, 26). The sensor (10) further comprises a fluid passage way (12a) and resilient members (18, 20) at least partially immersed in a fluid (14) in the passageway (12a) for varying the amount of light (24, 26) incident on the photosensor (28, 30) from the light source (24, 26) as a predetermined function of the amount of movement of the fluid (14) and resulting deflection of the resilient member (18, 20) in the passageway (12a). <IMAGE></p> |
