Shang Yuanyuan

Research on Embedded Surveillance Platform in Severe Environment

In the coal mine, open field or a severe surveillance environment, the use of computers and data collection card to achieve surveillance task is fairly dangerous and unreliable. This paper analyzes platform selection in special surveillance environment based on such problems as the high possibility of flammability and explosion, high humidity and lots of dust in surveillance environment, and the inconvenience of separate, long distance surveillance fields. It also proposes the concept of establishing the embedded surveillance platform. Finally a surveillance platform based on system on programmable chip (SOPC) is presented. The result shows that the embedded platform can afford the task in severe environment.

Trigonometric polynomial uniform B-spline surface with shape parameter

In this paper, we study in depth a new modeling method of the parameter curve and surface, i.e. uniform trigonometric polynomial B-spline surface with shape parameters. We have designed a series of algorithms. We also develop a Space Freedom Surface Modeling System under Microsoft Visual C++6.0 programmed circumstance, with some examples given as the application of the model. Through experiments, we present the range of change of the shape parameters in this model and discuss its effect on the surface when the controlling polygon remains constant.In this paper, we study in depth a new modeling method of the parameter curve and surface, i.e. uniform trigonometric polynomial B-spline surface with shape parameters. We have designed a series of algorithms. We also develop a Space Freedom Surface Modeling System under Microsoft Visual C++6.0 programmed circumstance, with some examples given as the application of the model. Through experiments, we present the range of change of the shape parameters in this model and discuss its effect on the surface when the controlling polygon remains constant.