Battery Free Wireless Smart Pool Monitoring System

Maintaining clean and fresh pool water typically requires manual, complex, and time-consuming methods. This project introduces a self-sustainable and autonomous smart pool monitoring system that can continuously monitor various physio-electrochemical properties of pool water in real-time without needing an external power source. The system features an electromagnetic generator inspired by the novel Brachistochrone bowl, which efficiently harvests energy from random water motion. This harvested energy powers a wireless transmission unit and a highly sensitive, custom-designed multifunctional sensor unit that measures pH, temperature, chlorine, conductivity, and wave motion. The free-floating, completely isolated device demonstrates a portable, wireless, and autonomous solution for maintaining a hygienic and safe swimming environment.

• The generator achieved a peak power of 72 mW at 4 Hz and 0.5 g acceleration from random motion.
• The multifunctional sensors demonstrated adequate sensitivity and accuracy for detecting minor variations in water quality.
• Successfully demonstrated a real-time, self-powered smart pool monitoring system with wireless data transmission to a mobile app.
• The system provides a portable, freestanding, and autonomous solution for maintaining pool hygiene.

A smart pool monitoring system (SPMS) was developed featuring an electromagnetic generator inspired by the Brachistochrone bowl to maximize energy harvesting from random water motion. The harvested energy powers a wireless unit and a custom-designed multifunctional sensor unit for pH, temperature, chlorine, conductivity, and wave motion. The system's performance was demonstrated in real-time by acquiring sensor data and wirelessly transmitting it to a custom-developed mobile application.