The heat stroke prevention system combines three types of hardware: a Wet Bulb Globe Temperature (WBGT) environmental sensor installed on-site, the DasSenseH wearable vital-sign sensor worn by each worker (available as a clip-on or wristband), and the DasLoop smart safety helmet with a built-in speaker for voice alerts. These hardware components feed real-time data into the DasIoT cloud platform for AI analysis.

The heat stroke prevention solution works in three stages. First, the on-site WBGT sensor and DasSenseH wearables continuously collect environmental and physiological data. Second, an AI algorithm co-developed with Hong Kong Polytechnic University calculates each worker's personal heat stroke risk index. Third, when risk thresholds are crossed, the system triggers a voice alert through the worker's helmet speaker and sends a push notification to supervisors' phones — all in real time.

Wet Bulb Globe Temperature (WBGT) is the international standard for measuring heat stress. Unlike air temperature alone, WBGT accounts for humidity, radiant heat, and wind speed — all factors that determine how quickly a worker's body overheats. The heat stroke prevention hardware uses a calibrated WBGT sensor placed directly on-site, so risk calculations reflect actual working conditions rather than distant weather-station data.

Yes. All heat stroke prevention hardware is wireless and battery-powered, requiring no fixed cabling or dedicated internet infrastructure on site. The sensors communicate over a private mesh network and sync data to the DasIoT cloud platform when connectivity is available, making the heat stroke solution practical for large outdoor sites, underground works, and remote locations.