21-05-2012, 04:35 PM
SMOKE ALERT SYSTEM FOR INDUSTRIES
SMOKE ALERT SYSTEM FOR INDUSTRIES.siva vinay .docx (Size: 1.33 MB / Downloads: 62)
INTRODUCTION
This project “SMOKE ALERT SYSTEM FOR INDUSTRIES” is used to monitor the Temperature of two Rooms and if the sensor found any fire in the Room then the alarm will be switched ON and water pump will be turned on until the Fire is put off else the Reset button is pressed. The Fire is sensed by using the Fire Sensor. The Fire Sensor is a passive device which has a Negative Temperature Co-efficient (NTC), i.e. when the temperature increases then the resistance of the Fire Sensor will decrease. A analog comparator is used for the fire sensor circuit , at normal temperature the output of the comparator is low, and if there is any fire hazard, then the temperature increases and therefore the resistance of the Fire Sensor decreases and the output of the comparator goes High which Trigger the Microcontroller. Then the Microcontroller will switch ON the Alarm for fire. The above system is monitored and controlled by the 8 bit Microcontroller. The Microcontroller continuously monitors the two sensors and if any one of the sensor sense Fire then it latches the sensor and the microcontroller switch on the Alarm according to the software stored on the RAM.
• HARDWARE COMPONENTS:
1. 8052 MICROCONTROLLER.
2. FIRE SENSOR.
3. BUZZER.
4. LOGIC CIRCUIT.
5. BC547 TRANSISTER.
6. LCD DISPLAY
7. DC MOTOR