A flexible driver of perception/execution community

Abstract

A flexible driver of a sensing / executing body, including a flexible driver composed of a flexible substrate and a flexible driving unit inside, a liquid metal sensing unit is arranged on the surface of the flexible substrate and inside, and the liquid metal sensing unit is connected to a lead wire; When the flexible substrate deforms, the expansion or contraction of the flexible substrate will simultaneously drive the corresponding liquid metal sensing unit to elongate or shorten. When the liquid metal is elongated, the increase in length and the decrease in cross-sectional area will make the liquid metal sensor The resistance increases; when the liquid metal shortens, the decrease in length and the increase in cross-sectional area will reduce the resistance of the liquid metal; by obtaining the change in the resistance of the liquid metal, the strain of the flexible substrate at the liquid metal sensing unit can be obtained; The liquid metal sensing unit is arranged locally on the surface and inside of the flexible substrate, which can realize real-time and online measurement of the strain at any position on the surface of the flexible actuator and the bulk phase.

Description

technical field [0001] The invention belongs to the technical field of micro-nano manufacturing and sensing, and in particular relates to a flexible driver for perception / execution integration. Background technique [0002] Compared with traditional actuators with complex mechanical structures, flexible actuators based on flexible functional materials can achieve complex and intelligent mechanical deformation through simple structures under conditions such as temperature, light, and current, and have excellent mechanical properties. Functional features such as flexibility and excellent environmental adaptability have shown great development prospects in the fields of narrow space detection, robotic shutdown arms, and intelligent implant systems in living organisms. [0003] Execution accuracy is the main bottleneck problem restricting the development of flexible actuators. In order to improve the execution accuracy of flexible actuators, currently the measurement unit is mai...

AI Technical Summary

Problems solved by technology

However, the current measurement unit is mainly a mounting structure, which can only sense the physical quantity (such as temperature, strain, etc.) at the mounting place, but cannot sense the physical quantity at any position, especially inside the body phase, and it is difficult to reflect the real service state of the driver. Such as the temperature distribution inside the bulk phase, the local strain concentration, and the corresponding crack state, etc.

[0004] Since traditional sensor devices are mostly based on copper, iron and other metals and semiconductor materials, their stretchability and sensitivity are greatly limited. Therefore, when the flexible actuator undergoes a large deformation, it is difficult to sense its surface and internal physical quantities.

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