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Thermal conductive sensor for myoelectrically controlled hand

A technology of thermal conductivity and sensors, applied in the field of information and control, can solve the problems of no sensing and perception functions, and achieve the effect of improving bionics

Inactive Publication Date: 2012-04-25
SERVICE CENT OF COMMLIZATION OF RES FINDINGS HAIAN COUNTY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary myoelectric prosthetic hands can only complete some of the simplest hand movements, such as fist stretching, fist clenching, wrist extension, wrist flexion, etc., without any sensing and perception of the external operating environment

Method used

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  • Thermal conductive sensor for myoelectrically controlled hand
  • Thermal conductive sensor for myoelectrically controlled hand
  • Thermal conductive sensor for myoelectrically controlled hand

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] Such as figure 1 As shown, a thermal conductivity sensor for a myoelectric prosthetic hand includes a layered sensor body and a signal processing circuit 10 .

[0013] The sensor body consists of a rubber base 7 , a flexible heating layer 5 , and a rubber-encapsulated skin 1 from bottom to top. Protrusions 3 are arranged on the upper surface of the rubber-encapsulated skin 1 . The temperature-sensitive resistor 2 is embedded in the rubber-encapsulated skin 1 , and the output resistance values ​​of the temperature-sensitive resistor 2 are different when the temperature is different. The flexible heating layer 5 is rubber resistance or resistance paint, and the upper and lower surfaces of the flexible heating layer 5 are respectively pasted with sheet-shaped flexible electrodes 4 . The sensor body is packaged in a metal frame 8 . A flexible electrode lead 6-2 is connected to a flexible electrode after passing through the rubber base 7, and another flexible electrode lea...

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Abstract

The invention relates to a thermal conductive sensor for a myoelectrically controlled hand. The traditional myoelectrically controlled hand cannot sense the thermal conductivity of an object. The thermal conductive sensor comprises a sensor body and a signal processing circuit. The sensor body sequentially includes a rubber base, a flexible heating layer and a rubber encapsulation skin from bottom to top. A temperature sensitive resistor is embedded in the rubber encapsulation skin. Lamellar flexible electrodes are respectively stuck to the upper surface and the lower surface of the flexible heating layer. The sensor body is encapsulated in a metal frame. Three resistors in the signal processing circuit form an electrical bridge together with the temperature sensitive resistor, the input end of the electric bridge is connected with a direct current power supply, and the output end is connected with a differential amplifier. The thermal conductive sensor is installed on the forefinger of the myoelectrically controlled hand to sense the thermal conductivity of a grasped object, when the myoelectrically controlled hand grasps the object, the thermal conductive sensor is in direct contact with the grasped object to finish the measurement on the thermal conductivity, thereby enabling the myoelectrically controlled hand to have a certain sensing capability and improving the bio-imitability of the myoelectrically controlled hand.

Description

technical field [0001] The invention belongs to the technical field of information and control, and relates to the technology of thermal conductivity measurement and information processing of objects, in particular to a thermal conductivity sensor for a myoelectric prosthetic hand, which realizes the thermal conductivity perception of grasped objects through the myoelectric prosthetic hand. Background technique [0002] Myoelectric prosthetic hand is a kind of electric prosthetic hand that uses the electromyography (EMG) signal on the skin surface of the residual limb to obtain hand motion information through pattern processing, and then drives the control motor of the prosthetic hand to realize the control of the prosthetic hand. EMG is the information carrier for amputees to realize the intention of prosthetic hand control, and it links the human residual limb with the control of the mechanical prosthetic hand. For disabled persons with acquired limb loss, they generally s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/18G01K7/24
Inventor 罗志增周炜张卫王占玉
Owner SERVICE CENT OF COMMLIZATION OF RES FINDINGS HAIAN COUNTY