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Multi-degree of freedom hand-prosthesis based on multi-force sensing resistance transducer

A technology of force-sensitive resistors and control devices, applied in prosthesis, medical science, etc., can solve problems such as poor bionic performance, few control modes, and weak anti-interference ability, and achieve high accuracy, natural movement, high sensitivity and accuracy degree of effect

Inactive Publication Date: 2009-01-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the shortcomings of the traditional muscle surface electric signal (EMG) on the multi-free artificial hand control device, which has weak anti-interference ability, poor bionic performance and few control modes, it proposes a multi-force sensitive resistance sensor. Multi-freedom prosthetic hand control device

Method used

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  • Multi-degree of freedom hand-prosthesis based on multi-force sensing resistance transducer
  • Multi-degree of freedom hand-prosthesis based on multi-force sensing resistance transducer
  • Multi-degree of freedom hand-prosthesis based on multi-force sensing resistance transducer

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specific Embodiment approach 1

[0007] Specific implementation mode one: combine figure 1 Describe this embodiment, it is made up of information acquisition module 1, signal analysis and processing module 2 and the artificial hand control module 3 based on DSP; Described information acquisition module 1 is made up of force sensitive resistance sensor 1-1 and circuit conversion processing module 1-2 Composition: The force sensitive resistance sensor 1-1 is installed on the inside of the prosthetic tube that matches the shape of the forearm and is in full contact with the forearm muscles. The signal output end of the force sensitive resistance sensor 1-1 is connected to the signal input end of the circuit conversion processing module 1-2 connected; the signal output end of the circuit conversion processing module 1-2 is the signal output end of the information acquisition module 1, and the signal output end of the information acquisition module 1 is connected with the signal input end of the signal analysis and...

specific Embodiment approach 2

[0016] Specific implementation mode two: combination figure 2 Describe this embodiment. The difference between this embodiment and the specific embodiment is that the circuit conversion processing module 1-2 is composed of a first resistor R1, a second resistor R2, a first capacitor C1, a second capacitor C2, and a third capacitor Composed of C3, the fourth capacitor C4 and the amplifier U1; one end of the first resistor R1 is respectively connected to one end of the second resistor R2 and one end of the first capacitor C1; one end of the first resistor R1 is the circuit conversion processing module 1-2 Signal input terminal; the other end of the first resistor R1 is respectively connected to the other end of the first capacitor C1, the negative phase power input terminal of the amplifier U1 and the ground wire; the other end of the second resistor R2 is connected to the positive phase input terminal of the amplifier U1 The inverting input terminal of the amplifier U1 is conn...

specific Embodiment approach 3

[0017] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the force sensitive resistance sensor 1 - 1 is a thick film polymer sensor. Other compositions and connection methods are the same as those in Embodiment 1. The force sensitive resistance sensor 1-1 has the characteristics of small size and high sensitivity. When the pressure acting on its surface increases, its resistance value will decrease correspondingly. The force-sensitive nature of the sensor is optimized for controlling electronic devices through the human sense of touch, making it ideal for acquisition of tactile signals.

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Abstract

A multi-degree-of-freedom artificial hand control device based on a multiple force sensing resistance sensor relates to a multi-degree-of-freedom artificial hand control device, which is provided for solving the shortcomings of the muscle surface electrical signal artificial hand control device of weak interference resistance, poor biomimetic performance and few control modes. The multi-degree-of-freedom artificial hand control device is composed of an information collection module, a signal analysis and processing module, a DSP-based artificial hand control module, etc; wherein, the information module is composed of a force sensing resistance sensor and a circuit switching processing module; the force sensing resistance sensor is installed at the inner side of an artificial limb tube, which coincides with the shape of the forearm, and fully contacts the forearm muscle; the signal output end of the force sensing resistance sensor is connected with the signal input end of the circuit switching processing module; the output end of the information collection module is connected with the signal input end of the signal analysis and processing module; the digital signal output end of the signal analysis and processing module is connected with the digital signal input end of the DSP-based artificial hand control module. The multi-degree-of-freedom artificial hand control device has the advantages of high interference resistance, good biomimetic performance, many control modes and high sensitivity.

Description

technical field [0001] The invention relates to a multi-free artificial hand control device, in particular to a multi-free artificial hand control device based on tactile information. Background technique [0002] The multi-freedom artificial hand tends to be miniaturized and lightweight on the mechanical body. Its volume is close to that of a normal adult hand, and its weight is about 500g, so that the user can bear the weight of the multi-freedom artificial hand; at the same time, with the intelligentization of the multi-freedom artificial hand With the improvement of requirements, more action modes need to be realized while ensuring a high success rate in prosthetic hand control. The traditional muscle surface electrical signal (EMG) has a high success rate in controlling the multi-free artificial hand, but at the same time, it also has a weak signal, which is easily interfered by electromagnetic radiation during the signal collection process, and it is difficult to incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/70A61F2/72
Inventor 姜力赵京东孙超杨大鹏刘宏
Owner HARBIN INST OF TECH
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