Traditional monitoring focuses on the environment via Wet Bulb Globe Temperature (WBGT). However, individual factors like age, fitness, and heavy PPE create a "micro-climate" that environmental sensors can't see [05:14]. Wearables provide a direct look at the worker's physiological response.
Step 1: Understanding the Metrics
The system tracks three primary metrics to determine a worker's safety level:
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Heart Rate: Monitors cardiovascular strain in real-time [12:10].
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Core Temperature: Uses a proprietary algorithm to estimate internal body temperature [14:35].
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Exertion: Measures physical activity levels to correlate with heart rate spikes [16:20].
Step 2: Deployment and Positioning
For accurate data, the wearable must be placed correctly:
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Arm Placement: The device is worn on the upper arm (bicep area) for the most reliable optical heart rate readings [22:15].
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Rugged Design: The band is waterproof and designed to be worn under or over PPE depending on the hazard [24:40].
Step 3: Managing Real-Time Alerts
The power of the system lies in its automated notification hierarchy:
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Worker Notification: The band vibrates on the arm when a safety threshold is crossed [33:46].
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Supervisor Alerts: Text-based alerts are sent to managers' phones, allowing for immediate intervention [33:59].
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Return to Work: Once vitals stabilize in a cooling zone, the device notifies the worker they can safely resume tasks [35:15].