| 摘要 |
PURPOSE:To simplify constitution and to improve detection sensitivity by transducing torsion applied to a mechanical oscillator into compressive axial force and leading it out in the form of frequency. CONSTITUTION:When one terminal of a mechanical oscillator 1 is fixed and the other terminal is twisted at an angle theta, external beam parts are twisted and shortened. Then, compressive axial force is generated at the center beam part. The center beam 11 is in lateral oscillation at a resonance frequency through a self-oscillation loop constituted including an exciting means 2, oscillation detecting means 3, and oscillating circuit 4 and when the comporessive axial force is applied to the center beam 11, the resonance frequency varies with the compressive axial force, i.e. angle theta of torsion. This variation in resonance frequency is detected by a counter 5 and processed by an arithmetic circuit 6, and an indicator 7 indicates the arithmetic result. |
