Eco-Friendly Crop Protection Using Solar Powered Sound Sensors

Crop loss due to wild animals and birds remains a persistent challenge for farmers, especially in rural and semi-rural areas. Traditional methods such as scarecrows, fencing, and chemical deterrents often prove either ineffective in the long term or environmentally harmful. This research presents an eco-friendly and sustainable approach to crop protection using solar-powered sound sensors. The proposed system utilizes non-conventional solar energy to power sound-emitting devices triggered by motion or sound detection. When an intruder—such as a bird or animal—is detected in the field, the device emits high-frequency or predator-like sounds that naturally repel them without causing harm. This technology reduces dependence on electricity and chemical repellents, offering a cost-effective solution for farmers. Field tests showed a notable reduction in crop damage while maintaining ecological balance. The design is simple, requires minimal maintenance, and can be adapted to different crop environments. This study illustrates that integrating solar energy with sound-based deterrence is a viable strategy for modern, sustainable agriculture.