Pressure sensor based on friction power generation and pressure sensing system

Abstract

The invention discloses a pressure sensor based on friction power generation and a pressure sensing system. The pressure sensor based on friction power generation comprises a pressure bearing component, a first elastic base body, a first structural layer, a base and a second structural layer, wherein the first elastic base body is arranged on a first side surface of the pressure bearing component and is provided with a regular protruding structure, the first structural layer covers the first elastic base body and forms a corresponding structure matched with the protruding structure of the first elastic base body, and the second structural layer is arranged on a first side surface of the base. When pressure is acted on the pressure bearing component, the first elastic base body and the first structural layer deform so as to enable the contacting area of a friction interface to be increased along with the increase of pressure, and a corresponding relation between the contacting area and output signals is utilized to enable the output signals of a signal output end to represent the intensity of pressure. The pressure sensor based on friction power generation overcomes the defect that a traditional pressure sensor is easily interfered by static electricity and electromagnetism, and has the advantages of being high in accuracy, wide in measurement range and wide in application environment.

Description

technical field [0001] The invention relates to the technical field of sensors, and more specifically, to a pressure sensor and a pressure sensing system based on friction power generation. Background technique [0002] Pressure sensor is the most commonly used sensor in industrial practice. It is widely used in various industrial automatic control environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemical, oil wells, electric power, ships, machine tools , pipeline and many other industries. [0003] Currently commonly used pressure sensors are mainly capacitive pressure sensors and resistance strain pressure sensors. Capacitive pressure sensors are mainly electrostatic capacity type, for example, the fixed electrode of glass and the movable electrode of silicon are opposed to form a capacitor, and the change of electrostatic capacity caused by the deforma...

AI Technical Summary

Problems solved by technology

But so far, there have been no reports of applying friction generators to pressure sensors.

Images