Patent ID: 8742517
Filing Date: 2014-06-03
Classification: B06B,G01L,H04R

Abstract:
1. A capacitive sensor configured to measure a physical parameter, comprising: a moveable membrane forming an upper electrode and having a plurality of collapsed parts; and a bottom layer forming a bottom electrode, wherein the sensor is configured to be driven in a collapsed mode in which the moveable membrane is brought into contact with the bottom layer, a magnitude of an area of contact between the moveable membrane and the bottom layer being configured to depend on the physical parameter, an output signal of the sensor depending on the magnitude of the contact area, wherein each collapsed part being configured for contact with the bottom layer, the magnitude of the contact area of each of the collapsed parts depending on the physical parameter, the output signal of the sensor depending on the total amount of magnitudes of the areas of contact between the collapsed parts of the moveable membrane and the bottom layer.