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The enhancement of urban air quality is a pressing global issue, crucial for safeguarding public health. Carbon monoxide (CO), a significant air pollutant, poses severe risks to human health. This study focuses on the development of a mobile-based Internet of Things (IoT) system for the detection and monitoring of carbon monoxide (CO) pollution, contributing to the advancement of healthy urban environments. Utilizing the MQ-7 sensor, the system accurately detects and quantifies CO levels, while the u-blox NEO-6M GPS receiver precisely locates measurement sites through satellite signal processing. Integration with the OV5647 camera enables the system to capture images at points of CO detection, enhancing data visualization. Processed data are relayed to a virtual private server (VPS) via a Raspberry Pi 3 Model B+, employing the Nginx web server for efficient data management. The MQ-7 sensor demonstrates a CO detection range of 20-100 ppm, with a minimal error rate of 4.87%. GPS accuracy tests reveal an average discrepancy of only 0.89 meters when compared to the Garmin eTrex 10, indicating high reliability. Field tests conducted across three Indonesian locales (Jakarta, Bekasi, and Depok) involved data collection via a quadcopter, culminating in the successful dissemination of CO concentration data on a publicly accessible web page, presented as an interactive map correlating to measurement locations.
Yusro et al. (Tue,) studied this question.