Smart PH Monitoring System: IOT, Cloud and AI Driven Solutions
D. Swaroopa (CSE) Sr. Assistant Professor at Geethanjali College of Engineering and Technology, Hyderabad, India dswaroopa.cse@gcet.edu.in
Thokala Abhishek Yadav(CSE), Student at Geethanjali College of Engineering and Technology, Hyderabad, India 21r11a05r1@gcet.edu.in
Eluri Kushal Keerthan(CSE), Student at Geethanjali College of Engineering and Technology, Hyderabad, India 21r11a05m5@gcet.edu.in
Dodla Adithya Kumar(CSE), Student at Geethanjali College of Engineering and Technology, Hyderabad, India 21r11a05m4@gcet.edu.in
Abstract
The Smart pH Monitoring System addresses the challenge of effective air quality awareness in a time of growing environmental concern. Many individuals remain unaware of harmful pH levels and pollution indicators in their immediate surroundings, leading to exposure without timely preventive action. Current monitoring apps often rely on generalized or third-party data, lack precise location-based feedback, and do not support user-specific interactions or real-time environmental visibility. A key issue is the absence of IoT integration and live geospatial mapping, which limits the ability to deliver personalized and actionable insights. Most existing systems fail to incorporate intelligent assistants and lack support for offline environments, reducing accessibility.
The proposed Smart pH Monitoring System tackles these issues by utilizing IoT sensors to measure real-time pH levels, which are visualized in a mobile application built with Flutter. Users log in securely through Firebase Authentication, after which they are presented with a Google Maps interface displaying their current location. A color-coded circular overlay spanning a 1 km radius indicates the pH severity level—green for safe, yellow for moderate, and red for hazardous. The current pH value is displayed beneath the map, offering concise and critical insight. Additionally, the app includes an AI-powered chatbot to address user queries and offer tips related to pollution and safety. The system ensures cloud-based data logging through ThingSpeak and Firebase, with offline support for continued usability. This dual-layered approach—real-time monitoring combined with interactive guidance—empowers users to make informed decisions and contributes toward greater environmental consciousness.
Index Terms – IoT, Flutter, Firebase Authentication, ThingSpeak, Google Maps API, pH Monitoring, Air Quality Index, AI Chatbot, Cloud Integration, Environmental Awareness
