Electronic skin based on flexible capacitor

The safety of human-machine interaction is very important in intelligent manufacturing, and the main purpose of ensuring safety is to enable the robot to receive information about the surrounding environment through proximity sensors, which can achieve good interaction between the machine and humans. In view of the current shortcomings of electronic skins, such as poor flexibility, lack of proximity sensing system, and the immeasurable magnitude of force after contact, we design a composite sensor that can realize proximity and small force haptics in this paper. We use flexible materials such as copper foil, polyimide, polyurethane and a new type of semiconductor material based on super capacitor and design a double-layer pressure-capacitance sensing structure based on the principle of human induced capacitance, variable dielectric constant and variable pitch capacitance. And we use STM32, FDC2214 chip to build a complete information acquisition and processing system.