The Sonar Acoustic Defense System (SADS) addresses the critical issue of human-elephant conflict, a problem with far-reaching consequences including crop damage, injuries, and fatalities for both humans and elephants. This project introduces an innovative wireless sensor network and acoustic defense system that acts as a virtual barrier, covering key elephant corridors and vulnerable villages. Unlike traditional methods, SADS emits unidirectional sonic waves to deter elephants without causing harm or disrupting the natural habitat of other animals. It serves as an early warning system, effectively reducing conflicts.

  • Virtual Barrier Technology: The system employs a combination of electronic signal generation and sound modulation to enhance the deterrence effect. By integrating modulated audio signals with ultrasonic waves, the technology has demonstrated increased effectiveness in repelling elephants from sensitive areas.
  • Early Warning System: SADS serves as an early warning system, providing timely alerts to authorities and villagers in the event of elephant intrusions. This rapid response capability significantly reduces potential conflicts.
  • Wireless Sensor Network: The implementation of a wireless sensor network, facilitated by the Xbee S2C module, allows seamless communication between multiple SADS devices. This interconnected mesh topology ensures comprehensive coverage.
  • Adaptive Target Tracking (OpenCV): The incorporation of OpenCV-based target tracking technology represents a significant advancement. This feature substantially improves the accuracy and responsiveness of the system, particularly in complex and dynamic environments.
  • Environmentally Conscious Solution: SADS prioritizes environmental preservation. By utilizing unidirectional sonic waves and avoiding harmful deterrence methods, it minimizes disruption to the natural habitat and other wildlife.
  • PIR Sensor Integration: The inclusion of a PIR sensor enables the system to detect animal movement through the measurement of heat signatures. This precise detection mechanism ensures the system is activated only when necessary.
  • GSM Alert System: The integration of a GSM (SIM900A) module enables real-time communication with forest rangers and landowners. This ensures that the appropriate authorities are promptly notified in the event of an elephant intrusion.
  • Customizable Deployment: The modular design of SADS allows for flexible deployment based on specific needs. It can be strategically positioned to cover critical areas such as elephant corridors and vulnerable villages.
  • PIR Sensor: The Passive Infrared (PIR) sensor detects the heat signatures of animals, enabling the device to activate in response to animal movement.
  • Xbee S2C Module: This module facilitates communication between similar devices in a mesh network topology, allowing for the exchange of vital information.
  • GSM (SIM900A) Module: The GSM module enables the transmission of elephant detection alerts to forest rangers and landowners, ensuring swift action in the event of an intrusion.
  • L298N Module: This module amplifies the modulated ultrasonic waves before they are transmitted via Ultrasonic Transducers.
  • Arduino Uno (ATmega328p): The Arduino Uno microcontroller is the central control unit, orchestrating all functions of the device, including data processing and communication with various modules.


The Sonar Acoustic Defense System (SADS) has undergone a series of transformative developments, each aimed at enhancing its efficacy and applicability in mitigating human-elephant conflict. These advancements have been achieved through a combination of rigorous field testing, cutting-edge technological integrations, and collaborative efforts with experts in wildlife conservation and sensor technology.

One of the most notable strides in SADS’ development journey has been the integration of OpenCV-based target tracking technology. This addition has revolutionized the system’s capability to accurately identify and track elephants, even in dynamic and challenging environments. By harnessing the power of computer vision, SADS can now respond with heightened precision, ensuring an even greater level of protection for both human communities and elephant populations. also I’m looking forward to implement thermal vision tracking…