Research and design of an intelligent contactless pump pressure disinfection system for public places based on the IoT

This paper provides a solution to address the inconvenience of managing contact sterilizing products in public places, including the waste of disinfectant and other related issues. Considering the background of normal epidemic prevention and control, we propose a novel design for an Arduino NANO based public automatic contact-free pump sterilization system. Our system uses an Arduino Nano microcontroller as the core controller, an ultrasonic sensor to judge the distance between people, and a resistance liquid level sensor to detect the liquid level in real-time. The system utilizes a PID algorithm to precisely control the liquid output and uploads data in real-time to the cloud platform of the Internet of Things through a 4G communication module for data visualization. This enables staff to carry out real-time monitoring and remote monitoring, as well as receive a liquid shortage alarm of various devices in public places through a mobile phone client. Our proposed system is composed of components such as PID control algorithm, IOT remote monitoring, sterilization, and ultrasonic sensor.