STEM与日常科技·英语30篇（7）

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智能遮阳帘如何响应室内温度变化

Smart blinds use tiny thermal sensors embedded in their frames to detect subtle air temperature shifts.
When indoor heat rises above a preset threshold, the blinds automatically tilt upward slightly to allow airflow.
This adjustment helps reduce reliance on air conditioning by improving natural ventilation.
The system works independently of sunlight intensity, focusing only on ambient thermal data.
Each sensor communicates wirelessly with a central controller that processes readings every 90 seconds.
Manufacturers calibrate these devices using real-world HVAC load models for energy efficiency.
Unlike sun-tracking blinds, this mechanism activates even on cloudy or nighttime hours.
The motorized gears operate quietly and consume less than 0.5 watts per adjustment cycle.
Users can override automatic mode via app or voice command without disrupting calibration.
Engineers designed the algorithm to avoid rapid toggling by requiring sustained temperature change over two minutes.