Abstract:
We have developed a sensor for fire detection in the forest (fire-sensor), which will be applied in rain forest of
Sumatra. A prototype of the forest-fire sensor consisted of transmitter and receiver module of STM110 EnOcean
Firma of 433MHz ISM Band has been constructed. The fire-sensor module detects the presence of fire in the
vicinity using a temperature sensor of the NTC (negative temperature coefficient). The NTC sensor is thermally
sensitive resistors (resistance decrease with increasing temperature and made of metal oxides and coated with
epoxy or glass with resistance of 470K Ω. The thermistor is mounted on the exterior of the prototype (casing)
and its switch-temperature is adjusted between 50°C and 90°C. A rapid rise in the temperature above the setting
point indicates the presence of a nearby fire changes the sensor resistance rapidly and therefore, the sensor would
send a telegram to the central station (receiver module).
