Automatic LDR based window blind control system

Automatic LDR based window blind control system - AUTOMATIC...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: AUTOMATIC LDR BASED WINDOW BLINDS CONTROL SYSTEM The purpose of this project is to control the window blinds automatically using LDR sensor when there is need of sun light or air. It detects itself weather there is need for light or not. When darkness rises to a certain value then automatically window blinds are closed and when there is source of light i.e. day time, the window blinds are automatically opened. In our project we have used a microcontroller, LDR sensor which detects the source of light and a geared DC motor for opening and closing of the window blinds. To detect the presence of source of light we use LDR sensor. LDR is a special type of resistance whose value depends on the brightness of the light, which is falling on it. It has resistance of about 1 mega ohm when in total darkness, but a resistance of only about 5k ohms when brightness illuminated. It responds to a large part of light spectrum. The basic firmware for the microcontroller is written in Embedded C language and complied using PIC complier. The compiler generates the Hex code for the microcontroller and the Hex code is stored /programmed in flash memory of micro controller. The main features of the project: 1. Power is saved. 2. No manual operation. 3. less no of Components 4. Easy for automatic operation 5. Low cost design www.mycollegeproject.com Ameerpet: Ph: +91 9490219339, 040-23731030 A-8, 2nd floor, Eureka court, beside Image hospital, Ameerpet, HYDERABAD 73. Santoshnagar: Opp: Magna Hypermarket, Santoshnagar X-Roads,HYDERABAD – 59. The project focuses on the following areas: 1. LDR sensor for detecting source of light. 2. Geared DC motor and microcontroller interface. 3. Embedded C programming. 4. Hardware and PCB design. The major building blocks of this project are: 1) Microcontroller based control system with regulated power supply. 2) Geared DC Motor. 3) DC Motor Driver. 4) LDR sensor. Software’s used: 1. PIC-C compiler for Embedded C programming. 2. PIC kit 2 programmer for dumping code into Microcontroller. Regulated power supply: www.mycollegeproject.com Ameerpet: Ph: +91 9490219339, 040-23731030 A-8, 2nd floor, Eureka court, beside Image hospital, Ameerpet, HYDERABAD 73. Santoshnagar: Opp: Magna Hypermarket, Santoshnagar X-Roads,HYDERABAD – 59. Block Diagram: www.mycollegeproject.com Ameerpet: Ph: +91 9490219339, 040-23731030 A-8, 2nd floor, Eureka court, beside Image hospital, Ameerpet, HYDERABAD 73. Santoshnagar: Opp: Magna Hypermarket, Santoshnagar X-Roads,HYDERABAD – 59. Automatic LDR based Window blinds control system Regulated power supply LDR ADC Reset Crystal Oscillator www.mycollegeproject.com Ameerpet: DC Motor driver Geared DC Motor Micro controller LED Indicators Ph: +91 9490219339, 040-23731030 A-8, 2nd floor, Eureka court, beside Image hospital, Ameerpet, HYDERABAD 73. Santoshnagar: Opp: Magna Hypermarket, Santoshnagar X-Roads,HYDERABAD – 59. ...
View Full Document

This note was uploaded on 10/30/2011 for the course MECHATRONI EN11ME2050 taught by Professor Perera during the Spring '11 term at Asian Institute of Technology.

Ask a homework question - tutors are online