Smart Heat Stress and Toxic Gases Monitoring Instrument with a Developed Graphical User Interface Using IoT

In any given environment, human body's ability to maintain homeostasis accounts his probability of life and death. Thus, its importance cannot be overlooked, as it allows hormones and enzymes to be ‘fine-tuned’ at a specific set of conditions, and allows efficient operation. The interest in the human body physiological capacity to endure extreme heat and cold conditions has raised enormously in the last few decades because of global warming and the sudden changes in temperature. This research focused on the development of a smart real-time monitoring instrument to detect and measure heat stress and toxic gases (CO, NO2 and H2S) on Java developed Graphical User Interface (GUI) using the Internet of Things (IoT) technology. The designed system uses DHT 22 (temperature and humidity), MQ7, MQ136 and MQ131 (CO, H2S and NO2 gas) sensors which are coupled with SEN0170 wind sensor. Atmega 328-PU with its Wi-Fi shield 101 is used for the purpose of controlling and Wi-Fi communication between Remote Terminal Unit (RTU) and GUI. The performance of the developed system was critically appraised and the accuracies measured from the toxic gases, Temperature Humidity Index (THI) and Wind Chill Index (WCI) were recorded as 97.3%, 97.8% and 96.2% respectively.