Capacitive Displacement Sensor

Capacitive Displacement Sensor

A displacement sensor in which the capacitance between two electrode plates varies with the distance between the plates or the area of overlap between the plates. Sensors that use the change in distance between the plates can be used to detect small displacements , and sensors that use the change in the overlap area of the plates can be used to detect displacements from a few millimeters to a few centimeters. This sensor has disadvantages such as high output impedance and susceptibility to stray capacitance, but if assembled and used properly, it can still achieve high-precision and high-stability detection.