Low-coupling flexible self-powered multi-mode sensor and preparation method and application thereof

The low-coupling, flexible, self-powered multimodal sensor designed with three functional layers solves the problems of signal coupling and high energy consumption of multimodal sensors, and realizes self-powered, low-coupling, and high-sensitivity multi-parameter detection, which is suitable for wearable health monitoring and robot interaction.

CN120820198APending Publication Date: 2025-10-21GUANGDONG UNIV OF TECH
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Patent Information

Application Number
CN202510986089.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-17
Publication Date
2025-10-21

AI Technical Summary

Technical Problem

Existing multimodal sensors have problems such as signal coupling interference, the need for complex algorithm decoupling, high energy consumption, dependence on external power supply and complex preparation process, making it difficult to achieve multi-parameter detection with high sensitivity and low signal coupling.

Method used

It adopts a three-layer functional layer design, namely temperature sensing layer, pressure sensing layer and humidity sensing layer, and uses conductive composite materials, triboelectric effect and hydrophilic conductive hydrogel to achieve self-powered and low-coupling signal output through solution coating and micro-nanostructure preparation technology.

Benefits of technology

It achieves self-decoupling of temperature, pressure and humidity signals, reduces signal processing complexity and energy consumption, improves sensor sensitivity and flexibility, and is suitable for wearable device and robot interaction.

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Abstract

The invention provides a low-coupling flexible self-powered multi-mode sensor and a preparation method and application thereof, and belongs to the technical field of flexible electronic materials. Comprising a temperature sensing layer, a pressure sensing layer and a humidity sensing layer which are stacked in sequence. The temperature sensing layer is made of a PEDOT: PSS / MWCNT composite material and outputs a temperature response signal through resistance change; the pressure sensing layer is formed by combining a PDMS layer with a micro-nano structure and a PET layer, and outputs a pressure response voltage signal based on a triboelectric effect; the humidity sensing layer is composed of PVA / CA composite matrix and EGaIn liquid metal, and humidity response signals are output through hygroscopicity induced resistance change. The sensor realizes simultaneous detection of three physical quantities of temperature, pressure and humidity, has low coupling degree among the sensing units, and can be applied to the fields of robot interaction, wearable health monitoring and environment monitoring.
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