Published Paper Details:

The system designed here is very useful for gardens, plantations where huge trees exist. In such places availability of solar energy may be difficult due to the shadow of trees, therefore solar lamp posts may not function properly. To overcome this problem, here in this project work, movable solar lamp post is designed, which moves towards sunlight. The main advantage of using this kind of technology is that the lamp post along with its accessories can be moved to a particular place where solar energy is available, this is essential in day time for charging the battery. The other advantage is that the panel can be positioned towards the Suns direction, there by maximum power can be utilized from the panel. The third & important feature is that the lamp post can be brought to a specific place where light is required in the nights. To perform all these activities, the system designed can be used. To prove the theme practically, a prototype module is constructed with lower rating electrical devices, which can be used for real applications. The lamp post arranged over a wooden chassis moves in singular direction freely. The chassis is equipped with 3 wheels and a DC motor connected to the front wheel. This DC motor drives the chassis. The solar lamp post contained with Solar panel, huge battery, lamp dome with high glow LED's, logic circuit, charging circuit, etc. is designed as totally automatic. The light will be activated automatically during the dark, & it will be switched off automatically in the morning. To achieve this, panel potential is monitored continuously. The battery is charged at constant voltage so that it is protected from over charging. Similarly, the battery voltage is also monitored & protected from deep discharging. When the battery voltage falls down by 9V, immediately load will be disconnected. The control circuit is designed with Atmel AT89C51.