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Bats are nocturnal animals who feast on fruits bearing trees like lansones, rambutan, papaya, etc. As the time goes by farmers have generated few deterrent systems for bats, like putting nets around the trees, but by doing this thing some bats gets caught and can be killed meaning it is harmful to the species and putting net is also expensive and must be changed every often because it is easily broken. This study demonstrates the effect of an alternative way to deter bats by developing a device that can detect bats and other nocturnal animals near its effective range. It uses PIR (passive infrared sensor) as the detector, 12v LED light and ultrasonic speaker as the deterrent. The profobat detects body heat in motion and emits frequency that range from 10 KHz to 42 KHz. This frequency is not audible to human ears but is effective as a deterrent for animals, meaning that it can detect bats that flies in its effective range that is 10- 12 meters at 180 degrees. This device is powered by twelve 12 batteries and is controlled by an Arduino mega microcontroller. The device was developed using the following steps namely; problem identification, research requirements specification, concept generation, design prototype, system testing and evaluation. The device was tested for its functionality in a local farm, and was the evaluated for reliability, ease of use, portability, and accuracy.


Bats, flashing lights, PIR (passive infrared sensor); tropical fruit bearing trees; ultrasonic Speaker

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How to Cite
“PROFOBAT (Protection From Bats) Microcontroller-BasedBat RepellentSystem in Fruit Bearing Trees”, IEJRD - International Multidisciplinary Journal, vol. 5, no. Special Issue, p. 8, Sep. 2020.


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