A wearable epidermal sensor for human intention recognition and its application

A sensor and human body technology, applied in the direction of electric/magnetic solid deformation measurement, electromagnetic measurement device, etc., can solve the problems of slow development of mechanical human-machine interface, limited normal activities of human hands, limited wearability, etc., to achieve a good human body. Intent recognition effect, improved wearability, good contact separation effect

Active Publication Date: 2022-05-20
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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  • A wearable epidermal sensor for human intention recognition and its application
  • A wearable epidermal sensor for human intention recognition and its application
  • A wearable epidermal sensor for human intention recognition and its application

Examples

Experimental program
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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 recognition of human body intentions and its application, including an encapsulation layer, an electrode layer, a friction layer, an adhesion layer and an The isolation layer, the electrode layer includes the internal circuit and the electrodes, the internal circuit is dendritic, and multiple electrodes are respectively arranged at the ends of each branch of the internal circuit; the packaging layer and the friction layer completely cover the electrode layer from both sides, and the shape is consistent with the shape of the electrode layer The same; the adhesion layer is arranged at the lower end of the friction layer, and it does not cover the corresponding position of the electrode; the isolation layer is embedded in the adhesion layer. The invention enables the device to be more effectively attached to the arm muscles through the structural design of the patterned adhesive layer and the spacer layer, and can better realize the contact separation effect when the hand muscles are deformed, so that there are obvious signal output and Better human body intention recognition effect improves the wearability, comfort and practicability of the human body intention recognition sensor.

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