A Detailed Explanation of Capacitive Pressure Sensors 1

In modern industrial and scientific research fields, the measurement and monitoring of pressure are of paramount importance. Capacitive pressure sensors, with their high sensitivity, long lifespan, and stable performance across a wide temperature range, have become the preferred pressure measurement tools in numerous applications. This article will provide a detailed introduction to the working principles, structural design, application scenarios, as well as the challenges and future development directions of the FSBB30CH60F capacitive pressure sensor. diode

working principle

The core working principle of a capacitive pressure sensor is based on the fundamental formula of capacitance: C=εA/d, where C is the capacitance, ε is the dielectric constant, A is the electrode area, and d is the electrode spacing. When the sensor detects external pressure, it causes a change in the electrode spacing d, resulting in a variation in capacitance C. By measuring this change in capacitance, the magnitude of the pressure can be accurately determined.diode

structural design

A capacitive pressure sensor primarily consists of the following components: a sensing element, electrode plates, dielectric material, an encapsulation body, and a measurement circuit. The sensing element, typically made of metal or semiconductor materials, deforms in response to pressure changes. Electrode plates are attached to both sides of the sensing element, with dielectric material filling the space between them. The encapsulation body protects the internal structure from external environmental influences. The measurement circuit converts the capacitance changes into electrical signals, facilitating subsequent processing and analysis.diode