Patent ID: 8413510
Filing Date: 2013-04-09
Classification: G01P

Abstract:
1. An acceleration sensor comprising: a substrate; a flexible section having flexibility and coupled to the substrate; a weight coupled to the substrate via the flexible section, wherein the weight has a first main surface and the substrate has a second main surface; and a first opposed electrode unit including a first electrode placed on the first main surface of the weight, a second electrode placed on the second main surface of the substrate and spaced away from and facing the first electrode, the first electrode and the second electrode providing a first capacitance between the first electrode and the second electrode; a second opposed electrode unit including a third electrode placed on the first main surface of the weight, a fourth electrode placed on the second main surface of the substrate and spaced away from and facing the third electrode, the third electrode and the fourth electrode providing a second capacitance between the third electrode and the fourth electrode, wherein