Alcohol breath analyzer

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Information about Alcohol breath analyzer

Published on February 22, 2014

Author: padmakarmangrule

Source: slideshare.net

Project Definition / Specification Alcohol breath analyzer with display using microcontroller Confidential ABSTRACT For Alcohol breath Analyzer using PIC microcontroller with display Project Definition / Specification Alcohol breath analyzer with display using microcontroller Confidential -1-

Project Definition / Specification Alcohol breath analyzer with display using microcontroller Confidential PROJECT DEFINITION / SPECIFICATION PROJECT TYPE Microcontroller(PIC16F877A) hardware design with software development (Device Driver) . PIC micro controller (PIC16F877A) based. PROJECT DESCRIPTION Our main motivation for creating the alcohol breath analyzer is to get alert from drunken people. In general, in intoxicated people are usually more care less and destructive than those not under the influence in our particular house, kitchen and library are 2 rooms that are vocationally left by an intoxicated. We decided to fabricate device that would allow sober housemates to use the facility while keeping the drunken ones out. Our breath analyzer initiates an alarm when a threshold concentration of alcohol is reached. The microcontroller does the above job it receives the signals from the sensors, and this signals operated under the control of software which is stored in ROM. Project Definition / Specification Alcohol breath analyzer with display using microcontroller Confidential -2-

Project Definition / Specification Alcohol breath analyzer with display using microcontroller Confidential BLOCK DIAGRAM SENSOR Reset circuit 16x2 LCD PIC 16F877A Controller Oscillatory circuit Alarm Unit Relay Unit PROJECT OUTLINE  A brief introduction to internal architecture of microcontroller.  An over view of programming of microcontroller.  An overview on C language.  An overview on mechanical arrangement.  Alcohol sensor interfacing with microcontroller. Project Definition / Specification Alcohol breath analyzer with display using microcontroller Confidential -3-

Project Definition / Specification Alcohol breath analyzer with display using microcontroller Confidential INTERFACES USED  Serial communication used for downloading the hex code.  Sensor circuit interface.  LCD interfacing  Relay interfacing. SOFTWARES USED  A Cross compiler for compiling and linking the code written for PIC16F877A.  Serial communication software for downloading code to PIC16F877A.  Operating system: Windows XP. Project Definition / Specification Alcohol breath analyzer with display using microcontroller Confidential -4-

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