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Wearable epidermis sensor for human body intention recognition and application of wearable epidermis sensor

A sensor and human body technology, applied in the direction of electric/magnetic solid deformation measurement, electromagnetic measurement devices, etc., can solve the problems of slow development of mechanical man-machine interface, restriction of normal human hand activities, limited wearability, etc., to achieve good human body Effects of intent recognition, improvement of wearability, and effects of contact separation

Active Publication Date: 2021-11-05
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low signal-to-noise ratio and poor stability, the development of mechanical human-machine interfaces based on biopotential signals is slow, so it is of great significance to develop wearable epidermal sensors that can quickly and effectively recognize human intentions.
[0003] Most of the sensors used in the existing human-machine interface technology are placed on the human hand, and the existing human-machine interface is in the shape of gloves, bracelets or arm sleeves, which are similar to clothing and have limited wearability, which greatly limits the normal function of the human hand. Activities, especially scenes that need to be grabbed

Method used

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  • Wearable epidermis sensor for human body intention recognition and application of wearable epidermis sensor
  • Wearable epidermis sensor for human body intention recognition and application of wearable epidermis sensor
  • Wearable epidermis sensor for human body intention recognition and application of wearable epidermis sensor

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Effect test

Embodiment 1

[0046] Select flexor hallucis longus, flexor digitorum profundus, flexor carpi radialis, flexor digitorum superficiale, extensor index finger, extensor hallucis longus, extensor digitorum, extensor carpi radialis brevis, and the encapsulation layer is selected according to The polydimethylsiloxane (PDMS) film patterned at the above 8 muscle positions, the electrode layer is sprayed with silver nanowires (AgNWs) to form an electrode film patterned according to the above 8 muscle positions, and the friction layer is selected according to the above 8 muscle positions. The polydimethylsiloxane (PDMS) film patterned on the muscle position, the adhesive layer is selected from the adhesive polydimethylsiloxane (PDMS) film patterned according to the above 8 muscle positions, and the isolation layer is selected with an inner diameter of 14mm. For a ring-shaped polyethylene terephthalate (PET) film with an outer diameter of 18 mm, the maximum distance between the friction layer PDMS and ...

Embodiment 2

[0049] Select 8 arm muscles, flexor carpi radialis, flexor carpi ulnaris, flexor digitorum superficiale, extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnaris, and extensor digitorum The encapsulation layer is selected from the aliphatic aromatic random copolyester (Ecoflex) film patterned according to the above 8 muscle positions, and the electrode layer is formed by spin-coating conductive hydrogel to form an electrode film patterned according to the above 8 muscle positions. The aliphatic aromatic random copolyester (Ecoflex) film patterned according to the above 8 muscle positions was selected as the layer, the film formed by spin coating with 3M-VHB tape patterned according to the above 8 muscle positions was selected as the adhesive layer, and the isolation layer was selected from For a ring-shaped polyimide film with an inner diameter of 14mm and an outer diameter of 18mm, the maximum distance between the friction layer Ecoflex and human ...

Embodiment 3

[0052] Human body intention recognition using wearable epidermal sensors includes the following steps:

[0053] S1. Using the wearable epidermis sensor to collect multi-channel signals of gestures and actions corresponding to different intentions of the human body;

[0054] The user wears the wearable skin sensor on the forearm of the human body, and makes each electrode point located at the position of each corresponding muscle, and the offset range between the electrode and the above muscle position is feasible within 10mm. Use a multi-channel acquisition card to collect multi-channel signals of this wearable skin sensor. During the collection, the user keeps the body sitting upright and the forearm horizontal, and makes different gestures, such as Arabic numeral gestures 1, 2, 3, 4, 5. Rehabilitation treatment gestures such as wrist flexion, wrist extension, fist clenching, palm extension, left deviation, right deviation, etc. The duration of the action can be reflected by ...

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Abstract

The invention belongs to the technical field of flexible wearable electronic devices, and discloses a wearable epidermis sensor for human body intention recognition and application thereof. The wearable epidermis sensor comprises a packaging layer, an electrode layer, a friction layer, an adhesion layer and an isolation layer which are sequentially arranged from top to bottom; the electrode layer comprises an inner circuit and electrodes,the inner circuit is dendritic, and the electrodes are arranged in the packaging layer; the plurality of electrodes are respectively arranged at the tail ends of branches of the inner circuit; the packaging layer and the friction layer completely cover the electrode layer from the two sides and are the same as the electrode layer in shape; the adhesion layer is arranged at the lower end of the friction layer and does not cover the corresponding positions of the electrodes; and the isolation layer is embedded in the adhesion layer. Through the structural design of the patterned adhesion layer and the spacer layer, the device can be more effectively attached to arm muscles, and the contact separation effect can be better achieved when the hand action muscles deform, so that the obvious signal output and the better human body intention recognition effect are achieved, and the wearable performance, the comfort and the practicability of the human body intention recognition sensor are improved.

Description

technical field [0001] The invention belongs to the technical field of flexible wearable electronic devices, and more specifically relates to a wearable skin sensor for human body intention recognition and its application. Background technique [0002] Today, with the rapid development of microelectronics and material technology, a large number of new microelectronic devices with multiple functions and high integration have been continuously developed, and have shown unprecedented application prospects in various fields in people's daily life. The human-machine interface can naturally expand the communication channel between human and external devices, connect human intentions with machine behavior, and realize human-computer interaction. So far, bioelectrical signals applied to human-computer interfaces include neuron signals, as well as cortical electrical signals, EEG, EMG, EoG signals, etc. Due to the low signal-to-noise ratio and poor stability, the development of mech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/16
CPCG01B7/16
Inventor 吴豪程小雯郭伟
Owner HUAZHONG UNIV OF SCI & TECH