Frugal Heart Rate Correction Method for Scalable Health and Safety Monitoring in Construction Sites

Abstract

Continuous, real-time monitoring of occupational health and safety in high-risk workplaces such as construction sites can substantially improve the safety of workers. However, introducing such systems in practice is associated with a number of challenges, such as scaling up the solution while keeping its cost low. In this context, this work investigates the use of an off-the-shelf, low-cost smartwatch to detect health issues based on heart rate monitoring in a privacy-preserving manner. To improve the smartwatch’s low measurement quality, a novel, frugal machine learning method is proposed that corrects measurement errors, along with a new dataset for this task. This method’s integration with the smartwatch and the remaining parts of the health and safety monitoring system (built on the ASSIST-IoT reference architecture) are presented. This method was evaluated in a laboratory environment in terms of its accuracy, computational requirements, and frugality. With an experimentally established mean absolute error of 8.19 BPM, only 880 bytes of required memory, and a negligible impact on the performance of the device, this method meets all relevant requirements and is expected to be field-tested in the coming months. To support reproducibility and to encourage alternative approaches, the dataset, the trained model, and its implementation on the smartwatch were published under free licenses.

System Architecture for Diagnostics and Supervision of Industrial Equipment and Processes in an IoE Device Environment

“…Thus, preprocessed data (e.g., through the use of sampling or processing at remote nodes) can be sent to the central processing system. In such a model, it is also possible to use frugal class solutions (e.g., frugal AI [15]) at the end nodes and send the finished requests or instructions to a central acquisition system. A comprehensive approach to building a data acquisition system was indicated in the paper [16].…”

Integration of Active Clothing with a Personal Cooling System within the NGIoT Architecture for the Improved Comfort of Construction Workers

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