Revolutionary battery-free environmental sensing through vibration energy harvesting
I designed and implemented a wireless CO₂ sensing system that operates completely without batteries by harvesting ambient vibration energy through a triboelectric nanogenerator (TENG). This groundbreaking system integrates BLE 5.0 communication for real-time data transmission, enabling sustainable environmental monitoring in industrial settings.
As the co-first author, I led the system architecture design, implemented the wireless communication protocol, and optimized the power management circuit to achieve self-sustained operation with minimal vibration input (as low as 0.3 g acceleration).
Ambient mechanical vibration (0.3-2g)
→Triboelectric energy conversion
→NDIR sensing module
→nRF52832 SoC
The system achieves complete energy autonomy by utilizing a highly efficient inertia-driven TENG that can harvest energy from vibrations as small as 0.3 g, making it suitable for deployment in various industrial environments without any external power source.
Designed the complete wireless sensing system integrating CO₂ sensor, BLE module, and power management circuit with optimal component selection for low-power operation.
Developed custom BLE communication protocol with adaptive transmission intervals based on available harvested energy, ensuring reliable data delivery.
Achieved self-powered operation through efficient energy management, including sleep mode optimization and intelligent power gating techniques.
Created compact flexible PCB layout integrating all components in a 40mm × 30mm form factor, suitable for industrial deployment.
Expanding the system to include temperature, humidity, and VOC sensors for comprehensive environmental monitoring.
Integrating on-device machine learning for predictive maintenance and anomaly detection in industrial environments.
Collaborating with industry partners for large-scale deployment in manufacturing facilities and smart buildings.