14-05-2012, 05:14 PM
POWER SAVING MECHANISM FOR STREET LIGHTS USING WIRELESS COMMUNICATION
a POWER SAVING MECHANISM FOR STREET LIGHTS USING WIRELESS COMMUNICATION.doc (Size: 1.34 MB / Downloads: 128)
INTRODUCTION
Electrical shock was long time problem of electrical power system, since the usage of electricity. Still it is main problem of electric power supply system, especially for street light control system because it is installed at open space and along the roadside through long distance. Heavy rain, traffic accident, etc make big trouble sometimes. So every street light control system should make counter measure on safety problem. Maintenance is also one of main consideration
factor. Every street light control system operator want to reduce maintenance costs and number of persons for repair. To reduce costs and number of person, street light control systems should have high stability and can give required information, when operators need information for maintenance and operation. For these reasons, reliable communication path and technique that is adequate for street light control system is required.
Evolution of Mobile Radio Communications
A brief history of the evolution of mobile communications throughout the world is useful in order to appreciate the enormous impact that cellular radio and Personal Communication Services (PCS) will have on all of us over the next several decades. It is also useful for a newcomer to the cellular radio field to understand the tremendous impact that government regulatory agencies and service competitors wield in the evolution of new wireless systems, services, and technologies. While it is not the intent of this text to deal with the techno-political aspects of cellular radio and personal communications, techno-politics are a fundamental driver in the evolution of new technology and services, since radio spectrum usage is controlled by governments, not by service providers, equipment manufacturers, entrepreneurs, or researchers.
WIRELESS COMMUNICATION:
This paper is organized as follows. We briefly review therelated works in Section n. In section 1lI methodology is described. Experimental results and performance analysis IS presented Section IV gives. Section V concludes the paper.
As wireless communication systems evolve, service quality and capacity are of primary importance. To ensure reliable communication over a mobile radio channel, a system must overcome multipath fading, polarization mismatch, and interference. The trend towards low power hand held transceivers increases all of these challenges. Even as more spectrum is allocated, demand for higher data rate services and steadily increasing numbers of users will motivate service providers to seek ways of increasing the capacity of their systems.
RELATED WORK
The hardware design of new street light control system designed by using Zigbee communication protocol is described in . As data communication protocol between centralized control center and concentrator, Code Division Multiple Access (CDMA) protocol is used. The concept of a double layer capacitor (super capacitor) based hybrid power train for light rail vehicles and city bus is presented in. The simulations of the hybrid power train and first practical test-bench results which have been recorded from a prototype inverter made for integration into a diesel electric bus are also presented.
A new design of high power factor low cost electronic ballast with intelligent energy saving control for watertreatment system ultra-violet lamps (UVL) drive is described in to obtain truly pure and safe drinking water. High power factor electronic ballast that will provide intelligent energy saving control design for ultraviolet lamps drive of water treatment system proposed in , which will not only save energy and manufacturing costs but also guarantee the 100% safe and drinkable water quality. The phase-one results of a case study of a dimmable road lighting system with intelligent remote control presented in. This is the first large scale installation of such system for about 8000 street lamps in China and the phase one of the project involves 1350 lamps.