Conceptual Design
After choosing manuel on the homepage the window could be opened and closed by the buttons on the homepage as long as the wind is calm.
For Operating:
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The best temperature for working is between 20°C and 26°C. The ideal temperature is 22°C.
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The best humidity for working is between 30% and 65%. The ideal humidity is 50%.
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The maximal limit value for CO2 is 1 Vol. %.
Only for closing:
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The maximal limit value for the wind is 21 m/s.
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The maximal limit value for the noise is 60 dB.
First alarms had to be defined. To prevent the window from continuous opening and closing the alarms has to be setted at the limit values and reseted at a mean normal value. The Alarm is also resettet if the Outside Value and the Inside Value are the same.
Only if the conditions outside are better then inside, it is useful to open the window.
Each Alarm also possesses a State. The State is shown at the visualization. It inherits three States: OK, Warning and Alarm.
The concept was designed as logic diagram.
It consists two main states, the window is opened (green) or closed (blue). We have four paths with different priorities. The priority declares which alarm is examined. If all alarms are examined, it is possible that the window could not close again. This would be caused by the unknown dependence of all alarm causes.
- Priority 0: Humidity
- Priority 1: Temperature
- Priority 2: Air Quality
- Priority 3: All
