Automatic street light controller
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This document outlines a project to develop an automatic street light controller using an AT89c51 microcontroller. It will include a photo sensor that switches the street lights on and off based on light levels, reducing power consumption. The project description provides a block diagram and overview of the main components, including the microcontroller, photo sensor, relays to control the lights, and an LCD display. It also describes the interfaces that will be used, such as the sensor, LCD, relays, switches and LED, and the software needed like a compiler and downloader.
Automatic street light controller
- 1. PROJECT DEFINITION / SPECIFICATION For AUTOMATIC STREET LIGHT CONTROLLER USING AT89c51 MICROCONTROLLER A TECHNOLOGY PLAIN DOCUMENT PROJECT DEFINITION AND SPECIFICATION……………………… 1
- 2. SECTION 1: SPECIFICATION DATE SECTION 2: PROJECT TYPE SECTION 3: PROJECT DESCRIPTION SECTION 4: BLOCK DIAGRAM SECTION 5: PROJECT OUTLINE SECTION 6: INTERFACES USED SECTION 7: SOFTWARES USED 4 PROJECT DEFINITION / SPECIFICATION SECTION 1: SPECIFICATION DATE SECTION 2: PROJECT TYPE Microcontroller (AT89C51) hardware design with software development (Device Driver) . 2
- 3. SECTION 3: PROJECT DESCRIPTION The aim of this project is to reduce the power consumption as well as maintenance by providing the Photo sensor that switches the light on and off automatically. The main feature of the Photo sensor is it’s a light dependent resistor. A small hardware model, which is as real as real world application, is built in this project. As the light falls off these sensors switch on the street light and vice-versa. SECTION 3: BLOCK DIAGRAM Relay 1 Photo Sensor Reset circuit Oscillator Circuit ATMEL 89C51 Controller Relay 2 Relay 3 Relay 4 Display1 16x2 LCD 3
- 4. SECTION 5: PROJECT OUTLINE A brief introduction to internal architecture of micro controller. An over view of programming of micro controller. An overview on assembly language. An overview on interfacing 16X2 LCD. An overview of Buzzers. An overview on interface of switches and led. SECTION 6: INTERFACES USED Sensors interfacing. 16X2 LCD Interfacing. Relay interfacing ULN2003 interfacing Buzzer, switches, led interfacing with micro controller. SECTION 7: SOFTWARES USED A Cross compiler for compiling and linking the code written for AT89C51. Serial communication software for downloading code to AT89C51. Operating system: Windows XP. 4
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