Patent ID: 8201449

Claim:
A sensor comprising: a detecting element including an acceleration sensor which comprises: a weight coupled to a rigid section via a flexible section, the flexible section comprising: a first arm coupled to the rigid section at a first end of the first arm, and a second arm coupled orthogonally to the first arm at a second end of the first arm, the second arm being further coupled to the weight and supports the weight as a cantilever; a substrate confronting the weight; and an electrode section formed of opposed electrodes placed on respective opposed faces of the weight and the substrate, wherein the substrate is formed of a first substrate and a second substrate confronting each other for sandwiching the weight along a gravitational direction, and the opposed electrodes are placed on the respective opposed faces of the weight, the first substrate and the second substrate respectively, and the acceleration sensor detects a change in an electrostatic capacity between the opposed electrodes for detecting acceleration.