| 摘要 |
The present invention relates to a large deformation sensor capable of adjusting sensing sensitivity, which can detect the deformation of an object made of a highly elastic material, the large deformation sensor comprising: a base plate which comes into contact with an object, is deformed according to the deformation of the object, and has a recessed accommodating groove; a sensing unit which is mounted on the accommodating groove of the base plate to detect deformation according to the deformation of the object; a metal plate which has both ends fixed and coupled to the upper surface of the base plate and has a curved section formed by bending the plate surface positioned over the upper side of the accommodating groove; and a sensing sensitivity adjustment unit which is coupled to the lower surface of the curved section, and of which an area contacted with the surface of the sensing unit, according to the deformation of the object, changes to vary impedance detected by the sensing unit. Therefore, by using a surface acoustic wave device, a change in a contact area between the surface acoustic wave device and the sensing sensitivity adjustment unit, according to the deformation of an object, leads to a change in impedance, thereby detecting the deformation of the object made of a highly elastic material. |
