Multi-parameter integrated sensing system based on flexible wearable friction nanometer generator

Abstract

The invention discloses a multi-parameter integrated sensing system based on a flexible wearable friction nanometer generator. The multi-parameter integrated sensing system comprises a signal source circuit, a resonance signal generation circuit and a voltage division circuit which are connected in parallel. The signal source circuit comprises a capacitor, a flexible switch integrated with a diode and a flexible friction nanometer generator which are connected in series, positive and negative friction materials of the friction nanometer generator and corresponding electrode materials are all made of braided flexible materials, and the positive and/or negative friction materials and the corresponding electrode materials form a sheath core structure. All the materials are woven into a piece of woven cloth, and the woven cloth and a third-party friction material jointly form a friction nanometer generator; the flexible switch is connected with the diode in parallel and then connected with the capacitor and the friction nanometer generator in series; the resonance signal generation circuit comprises a capacitive sensor and an inductor which are connected in parallel; the voltage division circuit includes a fixed load and a resistive sensor connected in series. According to the invention, self-driven anti-interference multi-parameter integrated sensing can be realized, the application range is wide, and the stability is good.

Description

technical field [0001] The invention belongs to the field of friction nanogenerator sensing, and in particular relates to a multi-parameter integrated sensing system based on a flexible and wearable frictional nanogenerator. Background technique [0002] In the Internet of Things era where everything is connected, different types of sensors act as clairvoyance and ears for humans, helping humans monitor the conditions of accessible or inaccessible environments. In the field of medical and health care, it is necessary to monitor the body temperature, weight, pulse, and breathing conditions of the human body through sensors such as temperature, gravity, and respiratory rate to determine whether the body is normal. In the military field, we need to simultaneously monitor the conditions of the combat environment through sensors such as temperature, humidity, and vibration frequency. In the field of transportation, sensors such as displacement, speed, and tire air pressure need ...

AI Technical Summary

Problems solved by technology

It overcomes that multi-parameter sensing technology usually requires additional energy supply, and the use of dual-resonant peak mode to realize dual-parameter sensing leads to complex circuit analysis, while the sensor based on triboelectric nanogenerators can sense fewer parameters and cause crosstalk between sensing signals. Disadvantages of poor stability and reliability

Images