Wavesense

Inspiration

A tragic drowning incident in my apartment, where a child lost his life due to a delayed response, highlighted the urgent need for a solution to prevent such accidents. This heartbreaking event brought the issue to light and inspired me to develop a system that could help save lives

What it does

WaveSense is a smart band designed to improve water safety by immediately alerting authorities and family members in the event of a drowning incident. It works on the principle that the human heart drastically slows down during drowning (bradycardia) . It detects distress by monitoring heart rate patterns using the MAX30100 pulse sensor. Upon detection of decreasing heart rate, the system instantly sends an SMS alert, including the wearer's exact GPS location to designated contacts, ensuring swift intervention. This solution aligns with the 3rd Sustainable Development Goal by promoting good health and well-being through advanced drowning prevention technology.

How we built it

The key components used in this project are -

ESP32 :- It is the central microcontroller handling data processing and communication MAX30100 pulse sensor :- It moniters the heart rate to detect distress Ublox Neo-6M GPS module :- It provides real-time location tracking Challenges we ran into Ensuring the MAX30100 pulse sensor is accurately calibrated, and is able to detect a critical heart rate drop flawlessly while differentiating it from normal activity Transmitting SMS alerts and GPS location with minimal delay for swift response Overcoming the challenge of signal transmission through water Accomplishments that we're proud of Successfully built a virtual working simulation of the project on WOWKI Developed a fully functional code for the system and started the hardware assembly Had meaningful conversations with people who believed this idea is capable of saving lives Winner in HackEMinds 2025

What we learned

The application of technology in life threatening situations Gained practical experience in working with pulse sensors and the pulsesensor playground library and its real-world applications Developed a deeper understanding of heart rate monitoring and its significance in life saving scenarios Learned how to read GPS coordinates and determine precise locations through triangulation Increase in patience and resilience

What's next for WaveSense

Ability to detect other heart related conditions Direct communication with hospitals in order to decrease response time Improving ability to function over extended periods of time Improving the system’s waterproofing for real world usage Exploring more reliable sensors for improved accuracy and efficiency Collaborating with NGOs to manufacture this solution and make it accessible to families in need

Built With

• esp32
• gps
• sim