USING THE VIBRATION SENSORS TO DETECT ELEPHANTS
Keywords:vibration sensor, geophone seismic sensor, circular plate, , natural frequency, confrontation between humans and elephants
This research proposed the development of vibration sensors to detect the elephants. A method based on the detection of vibration caused by footfalls. The purpose of the detection system have been try to reduce the confrontation between humans and elephants by warning. The elephant presence detection, consisted of the vibration sensor, was installed at a circular plate. The circular plates have different radii in the ranges 10 - 45 cm. These vibration modules were embedded into underground at 15 cm depth. The vibration sensor at a circular plate will convert motions of elephants into electrical signals when elephants enter the sensor areas, an early warning through SMS/Social Media is sent to the nearby forest officials and to owner of the crop field. In testing, the circular plate radii 20 - 45 cm. with the vibration sensor 801S can detect the motion of elephants, similar as the geophone seismic sensors. The experimental results are corresponding with the natural frequency of the circular plate 6 - 60 Hz which is the frequency range for the footfalls of elephants.
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