| 摘要 |
A sensor device comprises a beam anchored at both ends to a mounting frame (31, 37) and composed of an amorphous material exhibiting a magnetostrictive effect. The beam has disposed at an intermediate point along its length a seismic mass (29), which may be magnetic or non-magnetic, and a magnetising coil (34) for imposing an alternating carrier flux upon the beam and a sensing coil (35) for sensing changes in magnetic field associated with the beam due to accelerations of an object to which the mounting frame is attached. The sensing coil may be in two sections (35a, 35b), one each side of the seismic mass, for the suppression of a transverse sensing effect. The invention also provides for the realisation of a strain-sensing device, the seismic mass being then dispensed with. <IMAGE> |
