S.R.Vijayalakshmi and S.Muruganand Bharathiar University, India
ABSTRACT
A design of simple hardware circuit with differentkind of fire sensors enables every user to use thiswireless fire security system. The challenges in designing the nodes with various types of fire sensors arediscussed and the methods to overcome design proble ms are also analyzed. The circuit is interfaced withthe different types of sensor to sense different fire sources such as gas leakage, smoke, and heat. The cost,circuit components, design requirements, power requirements of sensor node are minimized. The methods to improve the quality of system to detect fire areanalyzed. The system is fully controlled by the PICmicrocontroller. All the sensors and detectors areinterconnected to PIC microcontroller by using varioustypes of interface circuits. The PIC microcontroller will continuously monitor all the sensors and ifit sensesany security problem then the microcontroller willsend the information to the PC central monitoringstation wirelessly for a short distance of 300m indoor/1500m outdoor using zigbee technology. The gassensor, light sensor, smoke detector sensor, IR sensor, temperature & humidity sensor, fire sensor areinterfaced with microcontroller to detect abnormalfire conditions in the environment in all possibleways
KEYWORDS Security Systems - Smoke Sensor – wireless sensor nodes – wireless fire security sensor nodes Original Source URL: http://airccse.org/journal/ijesa/papers/5215ijesa03.pdf http://airccse.org/journal/ijesa/current2015.html
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