Abstract
A novel sensing device for fire detection in domestic environments is presented. The fire detector uses a combination of several sensors that not only detect smoke, but discriminate between different types of smoke. This feature avoids false alarms and warns of different situations. Power consumption is optimized both in terms of hardware and software, providing a high degree of autonomy of almost five years. Data gathered from the device are transmitted through a wireless communication to a base station. The low cost and compact design provides wide application prospects.
Highlights
Home fire detection is a matter of great concern, and many efforts are devoted in most developed countries to the design of automatic detection systems [1,2]
Both IR light emitting diode (LED) and Sensors 2015, 15 photodiode are temperature dependent and the sensitivity of the smoke sensor depends on the ambient temperature, this effect is cancelled in high performance devices [10]
The use of a carbon monoxide (CO) sensor and temperature sensors increases the reliability of the system and reduces the false alarms
Summary
Home fire detection is a matter of great concern, and many efforts are devoted in most developed countries to the design of automatic detection systems [1,2]. A fire alarm system should reliably and in a timely way notify building occupants about the presence of fire indicators, such as smoke or high temperatures. Fire detectors that use a single sensor, generally a smoke sensor, present high false-alarm rates due to temperature changes [9]. The smoke sensor is based on infrared (IR) light refraction due to the presence of smoke into a small chamber. Both IR LED and Sensors 2015, 15 photodiode are temperature dependent and the sensitivity of the smoke sensor depends on the ambient temperature, this effect is cancelled in high performance devices [10]. The system must notify the failure of components, physical damage or attempted sabotage, facilitating maintenance and reducing unnecessary costs
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