| 摘要 |
<p>An inclinometer (20) has a sensing unit (40) for providing a varying capacitance signal depending on the orientation of the inclinometer (20). An oscillator circuit unit (82) includes the sensor unit (40) as a capacitive element for providing a signal having a period and a frequency depending on the capacitance of the sensor unit (40). A unit (92) is provided for determining the period of the signal. A look-up table unit (96) stores a predetermined relationship between the period of the signal and the angle of orientation of the inclinometer (20). A comparison unit (94) then compares the period of the signal to the period stored in the look-up table unit (96) and selects the corresponding angle which is the angle of orientation of the inclinometer (20). The angle is then displayed on the inclinometer display (25).</p> |
