This research project, titled "Development of a Smart Touchless Hand-Washing System with Integrated Temperature Monitoring," was developed to improve personal hygiene, reduce cross-contamination, and enhance public health safety by minimizing physical contact with commonly touched surfaces while enabling the early identification of individuals with elevated body temperature. It was undertaken to design and develop an intelligent, fully automated, contactless hand-washing system capable of simultaneously monitoring users' body temperature. It integrated ultrasonic sensors for hand detection, automated soap and water dispensing units, and a non-contact ultrasonic temperature sensor. The system employs an HC-SR04 ultrasonic sensor for contactless hand detection, an MLX90614 infrared thermometer for non-contact body temperature measurement, a SIM800L GSM module for SMS-based alert communication, and an ESP32 microcontroller as the central processing unit. Upon detection of a user's hands, the system automatically activates a solenoid-controlled water valve and a peristaltic soap pump. Simultaneously, the infrared sensor measures the user's forehead temperature. If a fever threshold of 37.5 degrees Celsius or above is detected, the washing cycle is suspended, an audio alert is triggered, and an SMS notification is immediately sent to a designated administrator's phone number. The system also features automated periodic SMS reports summarizing usage statistics, soap and water levels, and any health alerts recorded. Testing results demonstrate that the system effectively reduces contact-based contamination, provides reliable temperature screening with an accuracy of +/-0.5 degrees Celsius, and successfully delivers SMS alerts within an average response time of 3.2 seconds. In conclusion, a Smart Touchless Hand-Washing System with Integrated Temperature Monitoring that is cost-effective, energy-efficient, and adaptable to different operational environments, making it suitable for deployment in both urban and resource-constrained settings was developed
Nzeribe et al. (Thu,) studied this question.