Design of Indoor Environment Monitoring System Based on Wireless Sensor Network

This paper designs a low-cost indoor air quality monitoring system based on wireless sensor network architecture. The system is mainly composed of four core modules: data acquisition terminal, data transmission system, data processing and storage system, and monitoring management system. The system utilises MQ-4, MQ-7 and MQ-135 sensors to monitor the main pollutants in indoor air, such as carbon monoxide, methane, and ammonia, in real time, records the data locally, identifies outliers through 3ainaccuracy, and aims to provide users with an accurate air quality monitoring and management solution.