Microcontroller Based Automatic Street Light Control System

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  • Topic: Power supply, Voltage regulator, Relay
  • Pages : 17 (5720 words )
  • Download(s) : 2721
  • Published : December 30, 2012
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CHAPTER 1
INTRODUCTION

This project is mainly used to save power automatically instead of doing manual by using IR sensors The main consideration in the present field technologies are Automation, Power consumption and cost effectiveness. Automation is intended to reduce man power with the help of intelligent systems. Power saving is the main consideration forever as the source of the power(Thermal, Hydro etc.,)are getting diminished due to various reasons. Wireless communication has become an important feature for commercial products and a popular research topic within the last ten years These embedded communications devices will be integrated into applications ranging from homeland security to industry automation and monitoring. The main aim of the project is Automatic street power saving system with IR, this is to sensor save the power. We want to save power automatically instead of doing manual. So its easy to make cost effectiveness. This saved power can be used in some other cases. So in villages, towns etc we can design intelligent systems for the usage of street lights.

CHAPTER 2
BLOCK DIAGRAM
Microcontroller based automatic Street light control system consists of the following components
1. P89V51RD2 Microcontroller
2. LDR
3. IR sensor
4. Power supply

Fig.2.1Block Diagram
Working

Here we are using micro controller, IR sensors, and relay. By using the IR sensors we can operate the lights, i.e. when the light is available then it will be in the OFF state and when it is dark then the light will be in ON state, it means IR sensor is inversely proportional to light. When the light falls on the IR sensor it sends the commands to the micro controller that it should be in the OFF state then it switch off’s the light, all these commands are sent to the controller then according to that the devices operate. We use a relay to act as an ON - OFF switch, the load is connected to these relays.

In our project we are using LDR, which varies according to the amount of light falling on its surface, this give an indication for us whether it is a day/night time. We have placed IR sensors in both sides of the road, which can be controlled by Micro controller (P89v51).The IR‘s will be activated only on the night time. If any obstacle crosses the IR, automatically particular light will be ON, for few seconds

When the light falls on the LDR it sends the commands to the micro controller that it should be in the OFF state then it switch off’s the light, all these commands are sent to the controller then according to that the devices operate. We use a relay to act as an ON OFF switch, the load is connected to these relays.

CHAPTER 3
3.1. P89V51RD2
The P89V51RD2 is an 80C51 microcontroller with 64 kB Flash and 1024 bytes of data RAM. A key feature of the P89V51RD2 is its X2 mode option. The design engineer can choose to run the application with the conventional 80C51 clock rate (12 clocks per machine cycle) or select the X2 mode (6 clocks per machine cycle) to achieve twice the throughput at the same clock frequency. Another way to benefit from this features to keep the same performance by reducing the clock frequency by half, thus dramatically reducing the EMI.

The Flash program memory supports both parallel programming and in serial In-System Programming (ISP). Parallel programming mode offers gang-programming at high speed, reducing programming costs and time to market. ISP allows a device to be reprogrammed in the end product under software control. The capability to field/update the application firmware makes a wide range of applications possible. The P89V51RD2 is also In-Application Programmable (IAP), allowing the Flash program memory to be reconfigured even while the application is running. 3.1.1. Features

80C51 Central Processing Unit.
5 V Operating voltage...
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