A Hierarchical Processing Algorithm for Frequency Parameters of Capacitive Sensors

Capacitive sensors include various types of capacitors and have been widely used as sensing elements. When the physical quantity or mechanical quantity is measured or sensed, the capacitance of capacitors with various parameters will be changed accordingly. In order to have a unified treatment method for the data of the capacitive sensors, this paper proposes a hierarchical processing algorithm for the frequency parameters of the capacitive sensors, which can be applied to any capacitive sensors that meet the premise. The results not only have a reference significance in some control systems, but also are useful in the design of capacitive sensors. With the algorithm, the flexibility and accuracy of designing the capacitive sensors in circuits can be greatly improved as demonstrated in a real application.