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Distributed flexible pressure sensor based on electrically active polymer

A technology of electroactive polymers and pressure sensors, which is applied in the direction of instruments, measuring force, and measuring devices, can solve the problems of lack of flexibility, inconvenient use, and difficulty in ensuring accuracy, so as to reduce external interference, reduce use costs, and reduce development costs. effect of difficulty

Active Publication Date: 2015-06-24
常州柔希电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that most of the existing pressure sensors are rigid sensors, which cannot adapt to the needs of the human body and the pressure detection of the uneven surface of the measured object. They have large brittleness, small strain, lack of flexibility, and poor comfort, resulting in inconvenient use. Or the problem that the accuracy is difficult to guarantee, design an electroactive polymer-based distribution that is as soft as human skin in physical characteristics, can be bent or even folded freely, can easily monitor parts with complex surface shapes, and is easy to install flexible pressure sensor

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  • Distributed flexible pressure sensor based on electrically active polymer
  • Distributed flexible pressure sensor based on electrically active polymer
  • Distributed flexible pressure sensor based on electrically active polymer

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] Such as Figure 1-4 shown.

[0034] A distributed flexible pressure sensor based on electroactive polymers, such as figure 1 As shown, it includes a base plate 6, an electroactive polymer 3, a first electrode layer 2, a first aluminum foil layer 4, a second electrode layer 8, a second aluminum foil layer 9, and a silicone rubber gasket 10. The thickness of the base plate 6 can be 0.001 ~2mm; the electroactive polymer 3 is bonded and sealed with the bottom plate 6, and forms a plurality of closed spaces 5 arranged in an array ( figure 2 The array in it is 5×5, which can be freely set according to the specific implementation requirements), used to achieve good contact with the measurement surface, it consists of a plurality of closed spaces 5 arranged in an array on the bottom plate 6, and the number of An air nozzle 7 that is at least equal to...

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Abstract

The invention discloses a distributed flexible pressure sensor based on an electrically active polymer. The distributed flexible pressure sensor comprises a sensor array, a switching circuit, an interface circuit and a computer. The sensor array is used for preparing a corresponding array according to the size of a measuring plane and inputting pressure. The switching circuit is used for converting a sensed capacitance value into a voltage value. The interface circuit is used for conducting line-rank scanning, filtering, amplifying and A / D conversion on an input signal and converting an analog voltage signal into a digital voltage signal capable of being read by the computer. The computer is used for collecting, analyzing, processing and displaying the data input by the interface circuit. The flexible pressure sensor can be widely applied to the fields of human health monitoring, physical training, medical rehabilitation, biomechanics and safety monitoring and the like.

Description

technical field [0001] The invention relates to a capacitive-sensing pressure sensor, especially a pressure sensor that utilizes the deformed capacitance value of an electroactive polymer to realize pressure detection, specifically a distributed flexible pressure sensor based on an electroactive polymer. It can be widely used in contact measurement, non-destructive monitoring, robotics, biomechanics and other fields. Background technique [0002] At present, most pressure sensors are made of rigid sensitive materials such as metals and semiconductor strain gauges. The disadvantages are high brittleness, small strain, lack of flexibility, and poor comfort. However, for human health, rehabilitation medicine, physical exercise, sports biology and other fields, there are requirements for the flexibility of sensors. For example, to study the distribution of contact pressure between diabetic feet and the ground of diabetic patients, it is difficult for rigid pressure sensors t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/14
Inventor 朱银龙葛路伟苏晓芳张鑫炎王化明周宏平
Owner 常州柔希电子科技有限公司
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