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American Focus > Blog > Tech and Science > Wearable sensors monitor factory worker fatigue in real time
Tech and Science

Wearable sensors monitor factory worker fatigue in real time

Last updated: October 15, 2024 9:02 pm
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Wearable sensors monitor factory worker fatigue in real time
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Manufacturing jobs have long been associated with high rates of injuries, often stemming from physical and mental fatigue among workers. To address this issue, researchers have developed a system of wearable sensors that utilize machine learning to monitor workers for signs of strain and tiredness. The goal of these devices is to enhance job site safety and prevent accidents.

The research, detailed in a study published by a team at Northwestern University in the October edition of PNAS Nexus, focuses on a network of six wearable sensors positioned on a wearer’s torso and arms. These sensors are complemented by two depth cameras to track joint movements and an HD webcam to analyze movement patterns, intensity, and strength over time. By continuously monitoring heart rate, skin temperature, and locomotion patterns, the system aims to provide a comprehensive understanding of a worker’s physical condition.

Given the absence of universal biomarker metrics for fatigue, researchers relied on self-reported perceived exertion levels on a scale of 0-10, which were then fed into a machine learning model for real-time fatigue prediction. This approach offers a more nuanced assessment of an individual’s physical state compared to traditional methods.

The potential applications of this technology are significant, with the ability to optimize work schedules, implement adaptive work/rest cycles, and address the lack of deterministic biomarkers in manufacturing settings. In a trial involving 43 participants performing simulated manufacturing tasks while wearing weighted vests, the system accurately predicted fatigue levels and received positive feedback from industry workers.

Key findings from the study emphasize the importance of viewing exertion as a continuous variable and tailoring fatigue indicators to individual characteristics such as age, gender, and weight. Universal trends observed during the manufacturing tasks include measuring fatigue levels in the nondominant arm and monitoring ambulatory movements through chest sensors. Common signs of fatigue such as increased heart rate, elevated body temperature, and perspiration also informed the modeling for assessing exertion.

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The researchers envision that similar sensor systems will provide more precise monitoring of manual labor fatigue in factories, ultimately enhancing worker safety and risk mitigation. To facilitate this progress, they have made their methodology designs openly accessible online. However, ethical considerations regarding the deployment of such technology in workplace environments are essential, emphasizing the need for responsible oversight by manufacturing companies.

As advancements in technology continue to evolve, discussions surrounding the ethical and legal implications of deploying fatigue-monitoring systems in real-world settings will be crucial. By promoting constructive dialogue and responsible practices, the integration of wearable sensors and machine learning algorithms has the potential to revolutionize worker safety in manufacturing industries.

TAGGED:FactoryfatigueMonitorrealsensorstimeWearableworker
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