Literature all the street lights remain switched off

Literature Survey According 2 now days the world under the need of electrical power for every technologies used by the people therefore saving the power is very important, instead of using power in unused time and place it should be switched off when not in use. In the city street light is one of the most and major power consuming factors. Most of the time lights are on all the night until sunrise. By using the led and PIR sensors communication to reduce the power consummation. M.Abhishek et al 3 have implemented design of traffic flow based street light control system with effective utilization of solar energy in the year 2015. They used the renewable source of energy i.e. the solar power for street lighting. They have also used 8052 series microcontroller and is developed by replacing the normal bulbs with the LEDs due to which the power consumption is reduced by 3 times. Sensors are placed on either side of the road which senses the vehicle movement and sends the commands to the microcontroller to switch ON and OFF the lights. Here all the street lights remain switched off and it glows only when it senses the vehicle movement. Hence, because of the microcontroller, even when its night the lights are switched off.SomchaiHiranvarodom 4 describes a comparative analysis of photovoltaic (PV) street lighting system in three different lamps. Namely, a low pressure sodium lamp, a high pressure sodium lamp and a fluorescent lamp have been used for installation in each mast to determine the suitable system to install in a typical rural area of Thailand. All three systems have been mounted with the same module type and wattage in different places within the Rajamangala Institute of Technology, Thanyaburi district, Pathumthani province of Thailand. An operation of solar street lighting system can be divided into 2 period of time, namely, at 18.00-22.00 hours and 05.00-06.00 hours. The design of a control circuit was experimentally done in this work. The aim of this work is to determine the appropriate system to install in a typical rural area or a typical rural village of Thailand.Automatic control using LDR helps to save a large amount of electric power which is wasted in conventional street lighting system. The automatic switching operation observed using the developed control circuit is found to be very efficient and the maintenance cost is very less. The circuit controls the turning ON or OFF the street light. The street lights have been successfully controlled by microcontroller. With commands from the controller the lights will be ON when it’s dark. Furthermore the drawback of the street light system by just using timer controller has been overcome, where the system depends on both timer and LDR sensor 5.

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