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The significance of forest fire monitoring was determined by the importance of forest resource and the destructive of forest fire. In the paper, according to the limitation of traditional forest fire monitoring schemes, a new wireless network implementation scheme oriented to forest fire monitoring was presented based on GPRS communication technology and ZigBee technology. The related hardware schemes...
The localization principle and error source of DV-Hop algorithm which is classic self-localization algorithm in wireless network are introduced in this paper. Aiming at the disadvantage of DV-Hop algorithm on localization accuracy, an improved scheme by modifying the average hop distance is proposed. The simulation results show that the comprehensive properties of the improved algorithm (including...
Based on the advantages and disadvantages of some common methods which are used to trace the maximum power of solar cells, a novel fuzzy PID control method which can rapidly respond to changes in the external environment and effectively eliminate the oscillation phenomena near the power points is put forward after the properties of solar cell are carefully discussed. Every unit circuit is stimulated...
In the light of the problem of monitoring forest fire, the design strategy and practical implementation of establishing the fire monitoring system based on digital image information are proposed. The system is based on the continuous image sampling provided by CCD camera. We can obtain the configuration characteristics, dynamic characteristics and color information of interesting region with an application...
Precision agriculture is the frontier of international contemporary agriculture in the twentieth century. The development of precision agriculture is a significant strategic choice of agriculture and agricultural science development in the new stage in China. As a novel technology of information acquisition and processing, WSN possesses a great strategic meaning in overall improving the modernize...
As forest was considered as one of the most important and indispensable resources, the prevention and detection of forest fire have been hotly researched in worldwide Forest Fire Prevention Departments. Wireless sensor network (WSN) as a new technology of information acquisition and processing, has important strategic significance to improve the level of detection of the forest fire. Sensor nodes...
Wireless Sensor network(WSN), which was made by the convergence of sensor, micro-electro-mechanism system and networks technologies, was a novel technology about acquiring and processing information. Wireless sensor network (WSN) had a great application value and wide application prospect in the fields of military, agriculture, environmental monitoring, medical health, industry, intelligent transportation,...
As we all know, the forest is considered as one of the most important and indispensable resources, the prevention and detection of the forest fire, have been researched hotly in worldwide forest fire prevention departments. Based on the deficiencies of conventional forest fire detection on real time and monitoring accuracy, the wireless sensor network technique for forest fire detection was introduced,...
A new developed motion control system was composed of a novelty position detection apparatus of DC motor, the digital control circuit based on complex programmable logic device (CPLD), the opto-coupler driver circuit and the feedback detection circuit. The design of this kind of motion control system has novelty thinking in the advantage of real time detection and control, reliability and simplicity,...
Ultrasonic detection is widely used in the area of non-destructive testing system of wood intensity. In this paper, after analyzing the principle of the ultrasonic detection method of the wood modulus of elasticity, we have proposed a scheme which is based on Texas Instrument's DSP (Digital Signal Processor) TMS320LF2407. This DSP provides an efficient solution to computational complexities of the...
The Wireless Sensor Network technology has been used widely; however the limited energy resource is one of the bottlenecks for its application. To enhance the robustness and accuracy of the information which is obtained by the entire network, certain redundancy exists in the data collected from the sensor node and thus data fusion processing is needed to reduce the redundant information. Firstly the...
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