BREATHALYZER DOOR LOCK
INSPIRATIONWE FOCUS NOT TO PREVENT PEOPLE FROM USING ALCOHOLBUT PREVENT THEM FROM DRUNKEN DRIVING
BREATHALYZER DOOR LOCK PROVIDES IT CHECKS THE BAC LEVEL OF THE BLOWER IT PREVENTS THE DOOR OPENING WHENEVER THE PERSON I...
BLOCK DIAGRAM
BLOCK DIAGRAM DESCRIPTION1.PIC MC-16F877A• MASTER BRAIN OF THE DEVICE2.GAS SENSOR• DETECTS THE BAC LEVEL OF THE BLOWER3.KE...
FEATURES OF PIC-16F877A High performance RISC CPU Only 35 single word instructions to learn Interrupt capability (up to...
CIRCUIT DIAGRAM                  Vcc(9v)
LCD DISPLAY UNIT•IT DISPAYS THE BAC VALUE DETECTED BY GAS SENSOR ANDADC•IT ALSO DISPLAYS BASIC INSTRUCTIONS
KEYPAD• IT IS A PUSH TYPE 12 BUTTON KEYPAD• USED FOR SELECTING MODE AND ENTESINGACCESS      CODE           DC MOTOR• DC MO...
INTERNAL DIAGRAM OF GAS            SENSOR MQ-303A                     STANDARD CIRCUITCONFIGURATION
FEATURES OF GAS SENSOR• High sensitivity•Low power consumption•Miniature-size• The change of the sensor resistance (RS) is...
DATAFLOW DIAGRAM
APPLICATION1.PREVENTING DRUNKEN DRIVING AND THERE BYREDUCING ROAD ACCIDENTS UP TO AN EXTENT2.IN CASE OF FAILURE OF SENSOR,...
THANKSWe are thankful for the Co-operation and Kindness Of theStaff Of Electronics & Communication Dept. forboosting our S...
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Brathaly

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Brathaly

  1. 1. BREATHALYZER DOOR LOCK
  2. 2. INSPIRATIONWE FOCUS NOT TO PREVENT PEOPLE FROM USING ALCOHOLBUT PREVENT THEM FROM DRUNKEN DRIVING
  3. 3. BREATHALYZER DOOR LOCK PROVIDES IT CHECKS THE BAC LEVEL OF THE BLOWER IT PREVENTS THE DOOR OPENING WHENEVER THE PERSON IS TOXICATED IT ALSO PROVIDES ADMISTRATIVE ACCESS WITH A KEYPAD IT ALSO DISPLAYS THE BAC VALUE
  4. 4. BLOCK DIAGRAM
  5. 5. BLOCK DIAGRAM DESCRIPTION1.PIC MC-16F877A• MASTER BRAIN OF THE DEVICE2.GAS SENSOR• DETECTS THE BAC LEVEL OF THE BLOWER3.KEYPAD• FOR SELECTING MODE AND ENTERING ACCESS CODE4.LCD DISPLAY• DISPLAYS THE BAC VALUE AND INSTRUCTIONS5.DC MOTOR• CONTROLS THE OPENING OF THE DOOR
  6. 6. FEATURES OF PIC-16F877A High performance RISC CPU Only 35 single word instructions to learn Interrupt capability (up to 14 sources) Eight level deep hardware stack Direct, indirect and relative addressing modes Timer0: 8-bit timer/counter Timer1: 16-bit timer/counter Timer2: 8-bit timer/counter Two Capture, Compare, PWM modules 10-bit multi-channel Analog-to-Digital converter Synchronous Serial Port (SSP) Universal Synchronous Asynchronous Receiver Transmitter (USART/SCI) Parallel Slave Port (PSP)
  7. 7. CIRCUIT DIAGRAM Vcc(9v)
  8. 8. LCD DISPLAY UNIT•IT DISPAYS THE BAC VALUE DETECTED BY GAS SENSOR ANDADC•IT ALSO DISPLAYS BASIC INSTRUCTIONS
  9. 9. KEYPAD• IT IS A PUSH TYPE 12 BUTTON KEYPAD• USED FOR SELECTING MODE AND ENTESINGACCESS CODE DC MOTOR• DC MOTOR IS USED FOR CONTROLINGOPENING OF DOOR BUZZER• PRODUCING CAUTION TONE WHEN TESTFAILS AND INCORRECT PASSWORD ISENTERED
  10. 10. INTERNAL DIAGRAM OF GAS SENSOR MQ-303A STANDARD CIRCUITCONFIGURATION
  11. 11. FEATURES OF GAS SENSOR• High sensitivity•Low power consumption•Miniature-size• The change of the sensor resistance (RS) is obtained as the change of the output voltage•Generally, the sensor enters into normal working conditionsafter several minutes’ preheating• TheMQ-303A is a tin dioxidesemiconductor alcohol sensor WITHQUICK RESPONSE SPEED .
  12. 12. DATAFLOW DIAGRAM
  13. 13. APPLICATION1.PREVENTING DRUNKEN DRIVING AND THERE BYREDUCING ROAD ACCIDENTS UP TO AN EXTENT2.IN CASE OF FAILURE OF SENSOR,WE CANDEPEND ANOTHER ACCESSING MODE3.CAN BE SIMPLY IMPLEMENTED ON ANY KIND OFDOOR SYSTEM
  14. 14. THANKSWe are thankful for the Co-operation and Kindness Of theStaff Of Electronics & Communication Dept. forboosting our Spirit by Giving Us Innovative Suggestionsfor the Successful Completion Of our Project Entitled“BREATHALYZER DOOR lOCK” on time.

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