COMMAND BASED STREET LIGHT CONTROLLING THROUGH PC

COMMAND BASED STREET LIGHT CONTROLLING THROUGH PC

BATCH NO:12

SURESH RAVINDER SRUTHI VENKANNA

PURPOSE:

The purpose of the project is to implement a system is to control the street lights via instructions which are given through the pc.

Tools Required : Hardware: 1.Micro Controllers 2. Power Supply 3. PC. 4. MAX -232 5. Relay CIRCUIT 6. LIGHT ING SYSTEM Software: Embedded C Keil IDE Uc-Flash

BLOCDIAGRAM:

POWERSUPPLY

PC

MAX232

MICROCONTROLL

ER

RELAYS

CIRCUIT

LIGHTING SYSTEM

POWER SUPPLY

STEP DOWNTRANSFARMA

R

BRIDGERECTIFIER

FILTER CIRCUIT

REGULATOR SECTION

Block Diagram description :

POWER SUPPLY: The step down transformer converted 230v ac

to 12v dc The bridge rectifier is converted in to

pulsating dc The filter is converted into pure dc The regulator constant dc voltage be

maintained

MAX232We entered a command is “on”.The microcontroller can’t understand the language.so the RS 232 is converted voltage levels to logic levels i.e 0&1

MICROCONTROLLER1.In this project work the micro-controller is playing a major role. 2.Micro-controllers were originally used as components in complicated process-control systems. 3.However, because of their small size and low price, Micro-controllers are now also being used in regulators for individual control loops. 4.In several areas Micro-controllers are now outperforming their analog counterparts and are cheaper as well.

RELAYSRelay is an electrically operated switch. Current flowing through the coil of the relay creates a magnetic field which attracts a lever and changes the switch contacts. The coil current can be on or off so relays have two switch positions and they are double throw (changeover) switches.

The colour of an LED is determined by the semiconductor material, not by the colouring of the 'package.

LIGHTING SYSTEM

In the above project discussed as far, we are not sure about actually the idea regarding the project because , till now we had discussed about the different components used in the project and their specifications, characteristics etc. but now we come across the flow of data or the sequence of the connections regarding these components with the microcontroller.

Circuit Description:

PC control has become an indispensable item of every day’s life. Starting from routines like gate openers, window shutters through

metering and PC fire alarms to automotive applications like remote keyless entry and tire pressure monitoring systems.

Wireless control devices have established themselves as a cost-efficient and robust solution for a broad range of control applications.

In this project we are controlling various devices i.e. various street lights through PC just by typing the commands in communication terminal, in which PC is interfaced with the microcontroller serially.

According to commands given by PC the controller makes the devices ON or OFF.

APPLICATIONS:1.POWER SAVING2.MAN POWER SAVING3.TIME SAVING4.MAINTANANCE IS SIMPLE