Internet based key problems of virtual environment for robot teleoperation

To solve the problem of time-delay existing in Internet tele-robotics, the approach of predictive display based virtual environment is usually selected. Studies several key issues of the virtual environment in order to improve its abilities of extension and operation. Firstly, object-oriented method is used to construct the virtual environment on a platform using Java/Java3D, which can satisfy the need of flexible extensions of the system. Secondly, graphic representations of multi-sensor information are presented on the basis of self-made multi-sensor gripper to improve the ability of an operator to carry out a given task. Finally, the real-time updating of remote objects in the virtual environment is implemented through multiple long/short laser sensors. As a result, operative capabilities of the operator to perform remote complex tasks can be enhanced greatly.