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Dielectric flexible sensor for big deformation and touch pressure measurement

A flexible sensor and large deformation technology, applied in the direction of electric/magnetic solid deformation measurement, force measurement, measurement device, etc., can solve problems such as measurement

Inactive Publication Date: 2017-02-22
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For large and complex structural parts, the deformation of each component during work has a significant impact on its own working accuracy, but in many cases the size of these deformations is difficult to measure with laser measuring instruments and other equipment

Method used

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  • Dielectric flexible sensor for big deformation and touch pressure measurement
  • Dielectric flexible sensor for big deformation and touch pressure measurement
  • Dielectric flexible sensor for big deformation and touch pressure measurement

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Embodiment Construction

[0035] The present invention is described in further detail below in conjunction with accompanying drawing:

[0036] see figure 1 , the present invention can be made into a single-layer structure, and its structure includes a dielectric layer 1, and an electrode layer 2 attached to the upper surface and the lower surface of the dielectric layer respectively; Both ends of the electrode are pierced with thin metal needles.

[0037] like figure 2 As shown, the present invention can utilize interdigitated electrodes to make a multilayer structure with higher precision, and its structure includes interdigitated electrodes 3, and a dielectric layer is arranged between each group of positive and negative interdigitated fingers of interdigitated electrodes 3. 1. The lead wire is connected to the interdigitated electrode 3, and the lead wire adopts a true perforation method to penetrate the positive and negative electrodes with metal needles.

[0038] like image 3 As shown, the p...

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Abstract

The invention discloses a dielectric flexible sensor for big deformation and touch pressure measurement. The sensor has incomparable advantages on big deformation displacement measurement and distributed pressure measurement. The sensor consists of an upper conductive flexible electrode material, a lower conductive flexible electrode material, and a central insulating silicone rubber elastomer material, and forms a capacitive loop. After a single-layer structure is stretched, at least 300% deformation can be generated. The big deformation displacement is measured through capacitance changes, and the sensor is very good in prospect for exercise rehabilitation and posture measurement. The single-layer structures form a multilayer structure through stacking, thereby forming a parallel capacitive loop. The contact pressure is measured through the capacitance changes. The flexible materials can interact with a person well, so as to measure the pressure of contact between a human body and an external object. The sensor also can be designed in a distributed structure serving as a flexible touch sensing source. During the measurement of the pressure, the sensor determines the contact position, and is better in prospect for wearable equipment.

Description

[0001] 【Technical field】 [0002] The invention belongs to the technical field of flexible sensors and soft robots, and relates to a dielectric flexible sensor used for large deformation and tactile pressure measurement. [0003] 【Background technique】 [0004] The field of flexible electronics technology is currently a hot spot in research and development. It is mainly used in the fields of wearable technology and consumer electronics technology, such as bendable screens, flexible electronic tactile screens, human body training and rehabilitation posture measurement, and virtual reality (VR) applications. Sensory tactile system. Among them, the flexible sensing technology is used to sense the external tension and pressure to realize flexible measurement. This kind of measurement is different from traditional measurement structures. They generally use metal materials as sensing elements, which generate less strain and are difficult to interact with people friendly. For example...

Claims

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Application Information

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IPC IPC(8): G01B7/16G01L1/14
CPCG01B7/22G01L1/142
Inventor 张进华洪军李慕凡王浩
Owner XI AN JIAOTONG UNIV
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