Flexible tactile sensor array and array scanning system applied to same

A tactile sensor and scanning system technology, applied in the field of flexible materials and sensors, can solve the problems of not realizing effective detection of three-dimensional contact force, etc., and achieve the effect of simple and reliable manufacturing process, low cost, and stable voltage output

Inactive Publication Date: 2019-08-02
INST OF ELECTRONICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this single sensor still does not realize the effective detection of three-dimensional contact force and can only detect positive pressure.

Method used

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  • Flexible tactile sensor array and array scanning system applied to same
  • Flexible tactile sensor array and array scanning system applied to same
  • Flexible tactile sensor array and array scanning system applied to same

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Embodiment Construction

[0038] Aiming at the problems and deficiencies in the piezoresistive tactile sensor array in the background technology, the present invention proposes a flexible piezoresistive tactile sensor array with ultra-high sensitivity and high spatial resolution, and can effectively detect three-dimensional contact force and its application array scanning system. The present invention utilizes the nano-composite material of multi-walled-carbon nanotubes and polydimethylsiloxane (PDMS) as the piezoresistive conductive material, and adopts a unique double-surface rough structure as the structure of the piezoresistive sensitive unit material to increase the sensitivity of the sensor At the same time, the array scanning circuit is used to complete the fast row and column scanning of the sensor array, which realizes the high sensitivity of the sensor array in the range of contact force and pressure. The simple fabrication of the nanocomposite and the process flow of the sensor array enable ...

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Abstract

The invention discloses a flexible tactile sensor array and an array scanning system applied to the same. The sensor array comprises a projection layer, an upper electrode layer, a middle layer and alower electrode layer, wherein the projection layer is provided with a plurality of projections arranged in an array; the upper electrode layer is provided with a plurality of electrodes and is connected with the projection layer; the middle layer is provided with a plurality of piezoresistive units and is connected with the upper electrode layer; each piezoresistive unit corresponds to each edgeof each projection one to one; the lower electrode layer is provided with a plurality of electrodes and is connected with the middle layer; and each electrode of the upper electrode layer and each electrode of the lower electrode layer are correspondingly interconnected with each piezoresistive unit of the middle layer. The flexible tactile sensor array disclosed by the invention is simple and reliable in production process and low in cost, meanwhile, overcomes the defect of poor flexibility of a conventional silicon-based tactile sensor, has higher sensitivity, is short in response time and can implement real-time detection and feedback on a contact force.

Description

technical field [0001] The invention relates to the field of flexible materials and sensors, in particular to a flexible tactile sensor array capable of three-dimensional force measurement and an array scanning system applied thereto. Background technique [0002] With the development of flexible electronics in recent years, wearable and flexible tactile sensors have attracted a great deal of research due to their great potential in diverse application areas such as physiological measurement, robotics, human-computer interaction, and wearable devices. Devices have not only the ability to bend, various flexible electronic devices capable of bending, stretching and twisting have been continuously developed. One of the most important driving forces for the development of flexible electronic devices is because human beings and other organisms are flexible and elastic bodies. In addition to the characteristics of rigid pressure sensors, flexible pressure sensors have good flexib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/18
CPCG01L1/18
Inventor 薛宁孙旭光郑帅康王春凯李彤孙建海刘春秀
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI
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