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Virtual flexible body surgery simulation system capable of supporting force haptic feedback

A technology of tactile feedback and surgical simulation, which is applied in the field of virtual flexible body surgical simulation system, can solve problems such as difficult stability and low precision, and achieve the effects of improving computing speed, reducing maintenance costs, and simplifying the amount of calculation

Active Publication Date: 2017-05-10
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

BEM model calculation is simple, but there are some difficulties in stability
The shape-preserving chain model has the advantage of better real-time performance, but the chain elements are based on the assumption of rigid bodies, and the accuracy is not high

Method used

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  • Virtual flexible body surgery simulation system capable of supporting force haptic feedback
  • Virtual flexible body surgery simulation system capable of supporting force haptic feedback
  • Virtual flexible body surgery simulation system capable of supporting force haptic feedback

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Embodiment Construction

[0052] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0053] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0054] A haptic feedback simulation system for a virtual flexible body, comprising a host computer, a display device and a haptic interaction device respectively connected to the host computer, and a power supply module for supplying power, the host computer includes a hard disk and an IEEE1394 card, and is characterized in that : the hard disk includes a position detection module, a collision detection module, a force-tactile calculation and deformation module, a graphic refresh modul...

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Abstract

The invention discloses a virtual flexible body surgery simulation system capable of supporting force haptic feedback. A position detection module is used for detecting the position of a virtual proxy; a collision detection module is used for detecting whether the virtual proxy collides with a virtual flexible body or not; a force haptic deformation calculation module is used for calculating a local region deformation amount of the virtual flexible body when the virtual proxy collides with the virtual flexible body at a given virtual contact pressure F; an image refreshing module is used for continuously feeding back and outputting visual information to a display device according to the local region deformation amount calculated by the force haptic deformation calculation module; a force haptic information feedback module is used for continuously feeding back and outputting force haptic information to a handler through a force haptic interactive device. According to the virtual flexible body surgery simulation system capable of supporting force haptic feedback, through the arrangement and integration of a computer mainframe, the force haptic interactive device, a power module and the display device, the intelligent degree of a simulation system is easily improved, the energy consumption is lowered, the operating speed is increased, the maintenance cost is lowered, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the field of virtual reality human-computer interaction, and in particular relates to a virtual flexible body operation simulation system supporting force tactile feedback. Background technique [0002] Research on the ability of human beings to obtain information shows that force touch is the most important sense besides vision and hearing, and it is an important means for human beings to understand the external environment and interact with the environment. Also in some virtual operations, force-tactile interaction is also very important. The force haptic has its outstanding advantages in the virtual reality environment. The force haptic makes the virtual reality environment real. It is the only perception channel that can accept the input of the surrounding environment and can output the surrounding environment, which can greatly enhance the effect of visual expression. . The haptic interaction technology of virtual realit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G06F3/01G06T19/00
CPCG06F3/011G06F3/016G06T19/00G06T2210/21G06T2210/41G16H50/50
Inventor 张小瑞吕查德孙伟刘佳夏薇薇朱利丰宋爱国牛建伟王澎湃
Owner NANJING UNIV OF INFORMATION SCI & TECH
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