Finger allodynia device based on tabletop

A finger and human hand technology, which is applied in the field of desktop-based finger touch devices, can solve problems such as easy fatigue of human hands, affect human hand force perception, and unfavorable human intuitive feeling, etc., and achieve the effect of low overall cost, simple and compact structure, and natural operation

Inactive Publication Date: 2009-12-02
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The weight of the entire device itself will not only affect the force perception of the human hand, but also make the human hand prone to fatigue
Due to the complexity of the mechanism, the desktop tactile device is limited to the measurement and force feedback of a single point or single finger. For example, the PHANTOM series of SensAble Technology Co., Ltd. is currently the most used desktop-based tactile interaction device, but the device only It can provide force feedback similar to a finger when grabbing an object, and lacks the function of sensing the roughness of the surface material of the object
If multiple finger touch interaction is required, multiple PHANTOM devices are required. In fact, due to the complex structure of the PHANTOM device and the limitation of its own volume, it is impossible to perform touch interaction with more than three fingers at the same time. The position of the device and the human hand is relatively placed, which is not conducive to the intuitive feeling of the human hand

Method used

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  • Finger allodynia device based on tabletop
  • Finger allodynia device based on tabletop
  • Finger allodynia device based on tabletop

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0030] Further description will be given below in conjunction with the accompanying drawings.

[0031] A desktop-based five-finger touch device, such as figure 1 As shown in (a, b), it includes a thumb tactile component 1, an index finger tactile component 2, a middle finger tactile component 3, a ring finger tactile component 4, a little finger tactile component 5 and a base plate 6. The index finger tactile assembly 2 , middle finger tactile assembly 3 , ring finger tactile assembly 4 , and little finger tactile assembly 5 are respectively vertically fixed on the base plate 6 , and the thumb tactile assembly 1 is horizontally fixed on the base 6 .

[0032] It is characterized in that the structures and functions of the five finger touch components are the same, such as figure 2 (a, b) shown. Each haptic component can provide a joint bending angle measurement mechanism for a virtual finger; the front end of each haptic component is equipped with a force feedback mechanism ...

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PUM

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Abstract

The invention relates to a finger allodynia device based on a tabletop and belongs to the field of robots. The device can directly acquire three rotating angles of a knuckle of people through a potentiometer, sense the positive pressure of a finger tip when a virtual hand grabs an object through a force feedback mechanism of a direct current motor, and sense the roughness of material touched by the finger tip through a force feedback mechanism of a sucker-type electromagnet or electrorheological liquid. The device is based on the tabletop without loading on hands of people, has comfortable and intuitionistic operation, and has the advantages of simple structure and the like, and can be used in a virtual reality system.

Description

Technical field: [0001] The invention relates to a desktop-based finger touch device, which can not only provide the bending angle of finger joints for a virtual hand, but also sense the force of the virtual hand grabbing an object and the roughness of the surface material of the touching object. Can be used in virtual reality systems. Background technique: [0002] There are two types of haptic devices used in virtual reality systems: wearable and desktop. Wearable haptic devices are generally worn on the back of the hand. The weight of the entire device itself will not only affect the force perception of the human hand, but also make the human hand prone to fatigue. Due to the complexity of the mechanism, the desktop tactile device is limited to the measurement and force feedback of a single point or single finger. For example, the PHANTOM series of SensAble Technology Co., Ltd. is currently the most used desktop-based tactile interaction device, but the device only It ...

Claims

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Application Information

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IPC IPC(8): G06F3/01
Inventor 孙志峻宁晓蕾
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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