| 摘要 |
<p>A device comprises a shaft (22), a stopper (23), a protective spring plate (24), a pressuring member (16), a sensor bed (17), a pressure sensor (15), a sensor cover (25) and a base (26). The pressure sensor (15) consists of a pair of flat elastic plates (18a,18b) of an electrically insulating material with printed electrodes (19), which are stuck together with a spacer of 40-60 microns (20). When a load is applied via the shaft (22), the upper plate (18a) of the sensor is deformed whilst the lower plate (18b) keeps its former shape. The resultant change in the gap between the plates is detected in terms of a capacitance variation between the electrodes.</p> |
