| 摘要 |
<p>A displacement sensor comprises an oscillator system comprising an oscillating element. The oscillating element comprises a first conducting surface is arranged to oscillate about a fixed point in use. A second conducting surface is associated with a measurand, and is positioned opposite the first conducting surface at a distance from the first conducting surface. Voltage supply means is arranged to supply a substantially constant voltage across the first and second conducting surfaces in use and the first and second conducting surfaces are arranged such that, on oscillation of the oscillating member in use, a change in the distance of the second conducting surface from the first conducting surface causes a change in oscillation frequency of the oscillating member.</p> |
