Automatic street light controller using ldr pdf free

This is done by a sensor called light dependant resistor ldr which senses the light actually like our eyes. As light is falling on ldr light dependent resistor so led does not glow. Aim of this seminar is to control the street light using ldr. Automatic street light control system is a simple yet powerful concept, which uses transistor as a switch. It glows during night and switches off automatically as the sun rises. Pdf automatic street light control system using ldr and. Although the term often refers to the devices in personal computers, servers and embedded systems, rtcs are present in almost any electronic device which needs to keep accurate time. But in dimness or at night time, we know that resistance of ldr is high.

Automatic street light control system minor project abstract automatic street light control system is a simple yet powerful concept, which uses transistor as a switch. This is done by a sensor called light dependent resistor ldr which senses the. From this resistance change the voltage variation can be obtained this value is given to adc of pic. We can control the street lights through manually, but it is a time taken and also time lagging chances are there so, the process was lagging due to this. There is no light then the resistance value is change. As a result, the output pin 1 moves to low state, which further makes the relay to activate and the led or bulb associated to it will glow. Paper 2 discusses on the essential implementation aspects of energy. Content of the seminar and pdf report for automatic street light. Here we are giving you automatic street light seminar and ppt with pdf report. Automatic street light using ldr and 555 timer youtube. I have tried a lot of circuits but i made one and this works perfectly.

This project is all about the automatic street light, which can be used in our city streets, which we can save energy and manual work can be avoided and it is cost effective. How to make automatic on off street light use ldr today i will show you how to make automatic on off street light use ldr sensor,transistor npn c945 12. Automatic street light controller using relays and ldr. Automatic street light seminar report, ppt, pdf for ece. Automatic street light control using ldr relay power. Hence, the voltage at noninverting input pin 3 of the ic lm358 decreases than the inverting input pin 2. By using this system energy consumption is also reduced.

It automatically switches on lights when the sunlight goes below the visible region of our eyes. Paper 1 has proposed a concept on automatic street light control system using microcontroller pic16f877a as a prototype. It is a project depicting the proverb try and try till you succeed. The automatic streetlight control system operates on 12 v dc supply. Automatic street light control system using ldr and ic555 timer. When the light falling occur means resistance value will be change.