The design uses a wireless sensor network as information acquisition and processing platform. The coverage is big, effectively resolves the disadvantages of wired communications. Adopting the technology of wireless sensor network based on Zigbee, GPRS and Web Services technology, we design a set of low cost, low power consumption, flexible automatic networking temperature humidity monitoring system of soil. And the system is a complete set of wireless sensor network induction, acquisition, storage, application, reporting, solution, has a good man-computer exchange interface. Through commissioning in the demonstration base of soybean in Northeast Agricultural University, it shows that the system can meet the requirements of the temperature and humidity of soil environmental monitoring and unified management.

Wireless power transfer (WPT) is emerging as a practical means for electric vehicle (EV) charging. Of the three main approaches to WPT, resonant inductive, inductive, and capacitive coupling, capacitivepower transfer (CPT) is proposed herein to charge an EV at a kilowatt scale power level. CPT implementation replaces copper coils and ferrous core focusing/shield materials of inductive approaches with foil surfaces making CPT cost effective and structurally simple to implement, while maintaining efficient power transfer capability. This paper addresses each facet of kilowatt scale CPT system development, namely achieving high coupling capacitance between the vehicle and charging station and the associated drive power electronics. High capacitive coupling is achieved through a conformal (flexible and compressive) foam transmitter bumper that molds and contours itself to thevehicle to minimize air gap during charging. An experimental docking station to charge a Corbin Sparrow EV 156V battery pack was built and measured throughput power is demonstrated at >1kW with a coupling capacitance of 10nF operating at 540kHz

Pollution in water deposits is a great health issue. Portable devices installed in water deposits to form a real time, pollution monitoring system would be of great help. Research has demonstrated the use of dielectrophoresis (DEP) where particle manipulation is required. A portable, programmable device for manipulating pollutant particles has been developed, so data or images of samples can be analyzed, transmitted and stored. The system has a signal generator for electrical stimulation, a microfluidic device, a particle detection sub-system, and a data transmitter. It can be programmed to manipulate a specific type of particles and transmit resulting data or image. A portable prototype is achieved, which can be installed in any water deposit and programmed to perform regular fluid samples and analysis, to maintain a web-based, real time data center.

In this advancing era of technology we are more concerned about the advancements made in technology rather than thinking upon the alternative sources of energy. Energy costs and decreasing supplies of fossil fuels, emphasis on protecting the environment and creating sustainable forms of society. Since, as solar energy which is also considered a renewable form of energy can be used to offset some of the power coming from the main grid that is generated by let us say nonrenewable sources of energy. And creating these renewable sources in such a way that these provide us with the maximum efficiency is our main goal. This paper proposes a solar tracking system designed with microcontroller and Idr's that will actively track the sun and change its position accordingly to maximize the energy output. The Idr's incorporated on solar panel helps to detect sunlight which in turn moves the panel accordingly