Mathematical Techniques in Multisensor Data Fusion
Mathematical Techniques in Multisensor Data Fusion
A coverage-preserving node scheduling scheme for large wireless sensor networks
WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
A comparison of randomized and evolutionary approaches for optimizing base station site selection
Proceedings of the 2004 ACM symposium on Applied computing
Set k-cover algorithms for energy efficient monitoring in wireless sensor networks
Proceedings of the 3rd international symposium on Information processing in sensor networks
| Hi-index | 12.05 |
The research is mainly to design a portable anemometer that can display two-elemental direction and data as well as measure the variations of small wind speed and instantaneous wind speed based on wireless sensors network (WSN). The research principle is to use gas molecules of Negative high-voltage free air to form different equipotential field, which will offset as it's affected by wind, and the voltage differences measured by sensing bars of four terminals will be values of wind speed and wind direction. The circuit design of the research is to use piezoelectric transformer to generate negative high voltage with features of high efficiency, high step-up ratio and thinness and small size; and circuit board production is used by SMD parts with features of light weight, small size and portability. The experimental results demonstrate that two-elemental direction and value can be displayed at same time and the minimum value of wind speed can be less than 0.05m/s. As compared with vane anemometer, it can measure the small wind that can be measured by rotary anemometer, thus the device of the experiment is demonstrated to be an anemometer that can measure two-elemental and small speed wind. The sensor of the research can sense air convention, gas emissions and gas leakage with wide range of applications such as in the industries of aerospace, energy and food, biochemical laboratory, hospital isolation room, office, storage facilities, mine field, tunnel, car and so on. In the future it can take integrated design to integrate the electric circuit into the IC and be applied in the MEMS to make measurements without external high voltage. It can make measurement for micro-surgery and measure the flow of airflows of body organs by combining with biotechnology.