Human body intention recognition sensor and recognition method based on friction power generation

A technology of friction power generation and sensors, which is applied in the field of human body intention recognition, can solve the problems of limiting the application of gesture recognition sensors, the inability to detect the movement state of the wrist, and the large number of wearable system hardware, so as to facilitate recognition and classification, and achieve high signal amplitude. value, the effect of a simple system structure

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

By making the sensor into the shape of a finger cuff, it can be worn on each finger to detect finger movements. This wearable system has a lot of hardware, a complex structure, and is not easy to wear, and it will affect people's normal body movements after wearing it. Engaging in other activities, such as wearing fingers that cannot get wet, cannot use force, and cannot detect wrist movement status, which greatly limits the application of gesture recognition sensors

Method used

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  • Human body intention recognition sensor and recognition method based on friction power generation
  • Human body intention recognition sensor and recognition method based on friction power generation
  • Human body intention recognition sensor and recognition method based on friction power generation

Examples

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Embodiment 1

[0037] see figure 1 , the present invention provides a human body intention recognition sensor based on triboelectric generation, which includes a negative material layer 1 and a plurality of flexible electrodes 2 .

[0038] The negative charge material layer 1 is preferably ring-shaped, and the negative charge material layer 1 can be sleeved on the wrist of the human body and worn like a bracelet, so that the contact between the negative charge material layer 1 and the skin generates friction and then generates electrical signals. The material of the negative material layer 1 is preferably one of polydimethylsiloxane (PDMS), 3M-VHB tape, polyethylene terephthalate, and polyimide.

[0039] A plurality of flexible electrodes 2 are arranged at intervals on the outer surface of the negative material layer 1 , that is, a plurality of flexible electrodes 2 are arranged annularly on the outer surface of the negative material layer 1 . When the negative charge material layer 1 is wo...

Embodiment 2

[0044] This embodiment provides another human body intention recognition sensor based on triboelectric power generation, including a plurality of friction nanogenerators and a wristband, and a plurality of friction nanogenerators are respectively arranged on the inner side of the wristband, so that Ring arrangement.

[0045] The triboelectric nanogenerator includes a negative material layer with negative electrical characteristics and a flexible electrode, the negative material layer is in contact with the skin to generate an electrical signal, and the flexible electrode is located between the negative material layer and the surface of the bracelet for The electrical signal is derived.

[0046] In the same manner as in Example 1, at least one of the extensor carpi ulnaris tendons, flexor digitorum superficialis tendon, extensor carpi radialis tendon, flexor carpi radialis tendon, extensor digitorum tendon and extensor hallucis longus tendon of the human wrist is respectively a...

Embodiment 3

[0055] This embodiment provides a method for human body intention recognition using the human body intention recognition sensor based on triboelectric generation in the above-mentioned Embodiment 1 and Embodiment 2, such as image 3 As shown, the method includes the following steps S1-S3.

[0056] S1: Using the human body intention recognition sensor to collect electrical signals under different human intentions.

[0057] The user wears the human body intention recognition sensor on the wrist, and makes the flexible electrode be located at the position corresponding to the designated tendon of the wrist. In this embodiment, the designated tendon of the wrist includes at least: extensor carpi ulnaris tendon, flexor carpi digits superficial tendon, carpi radialis extensor tendon, flexor carpi radialis tendon, extensor digitorum tendon, and abductor hallucis longus tendon. During collection, users can keep their palms parallel to the desktop and make different gestures, and coll...

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Abstract

The invention belongs to the related technical field of human body intention recognition, and discloses a human body intention recognition sensor based on triboelectric power generation and a recognition method thereof. The sensor includes: a negative charge material layer and multiple flexible electrodes, wherein the multiple flexible electrodes are arranged at The outer surface of the negatively charged material layer; the negatively charged material layer has negatively charged characteristics, which is sleeved on the wrist of the human body and contacts the skin to generate friction and then generate electrical signals. The flexible electrodes export the electrical signals to realize the recognition of human body intentions. In this application, the contact between the negative material layer and the skin generates friction and then generates electrical signals. The movement of the hand will cause the muscles and skin of the wrist to deform, thereby distinguishing different gestures. Multiple flexible electrodes are arranged at intervals on the outer surface of the negative material layer, which can simultaneously capture The movements of multiple parts can more accurately obtain the coupling changes of the flexible electrode signals under different human body intentions, and realize the collection of electrical signals under different intentions, which is more accurate.

Description

technical field [0001] The invention belongs to the related technical field of human body intention recognition, and more specifically relates to a human body intention recognition sensor based on friction power generation and a recognition method thereof. Background technique [0002] Myoelectric technology is an effective human body intention recognition method. It is based on the weak current signal generated during muscle contraction. By collecting and analyzing the signal data of the current changing with time during exercise, it can be used to distinguish various exercise modes. The operation is very simple. It plays an important application value in sports science, clinical medicine, rehabilitation and other methods, but the EMG signal also has obvious defects, such as the signal will be interfered when there are too many channels, the noise is obvious, and the huge data acquisition device will also affect the wearing time. The EMG signal is generally obtained through...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/11H02N1/04G06N3/08
CPCA61B5/1116A61B5/7267A61B5/1118H02N1/04G06N3/08
Inventor 吴豪方涵
Owner HUAZHONG UNIV OF SCI & TECH
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