The conspiracy of wind guard.

The sun bangs, a mild breeze blowing and the automatic rolling shutters for fear of storm damage high. Facade Verdunkler spin because the wind sensors wrong places and facilities are poorly programmed - or because the leaders of the accountability office of the doubt.

 

If the graphic wrapping paper rolls and roll out the window with several layers of brown tape up, then the summer there. It may be that the employees in most other office buildings in the height of Germany's shutdown blinds shielded sit comfortably in the twilight.

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Low-tech blinds: When will blogs ONLINE gekurbelt - without incapacitation by mimosa-automatic

In my old office we had to lock out the sun itself. External blinds although there were, but also an automatic transmission, this bright in the sun for hours and regularly unkorrigierbar hochfuhr - because of too much wind and the threat of storm damage to the blinds, like a house said.

So there is something not only in the Ruhr region - such mimosa-blinds complain blogs ONLINE readers from all over Germany.

Ingmar Hook, for example, works at an office in Munich with blinds disease: "The wind is going down the blind guard uncompromisingly high, when some wind goes. In this case, we have A0-old wall calendar worried that we will stick to the window so that you the screens to see something. "

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Actually have automatic blinds is not as herumzicken. Actually, the technique is perfect, says Elmo Schwandke, chief editor of the journal for building and craft "g + h". His assessment: "I see no fundamental technical barriers to the components used." The problem is not the technology itself, but the installation and programming of the plant, as well as sensors for light and wind.

Certainly, as an expert Schwandke Building, there are installations in bright sun because of a "slight breeze, the Office of the midday sun completely suspended." But: "Something is in almost all cases, to faulty programming. Kompetenten electrical specialist undermined such errors do not."

A sensor for four facades

A frequent cause of zickende automatic blinds: A central meteorological station measured wind speed and light radiation, and the automatic transmission is based on this data on all four facades of the blinds react. As the sun square buildings experience a maximum of two sides also can catch some directly, so frustrated automatic at least half of the office.

The same problem arises when a wind sensor (on the roof?) Storm warning for external shutters on all building sides. Then it may well be that on one side, where just about no wind blows, the blinds because supposedly too high wind speed. Occurs confirmed Building Schwandke expert, but should not be: "With a facade-dependent control can exclude such errors. Furthermore, it is not necessary in every case, all the facades completely automated."

Say: If the client is too expensive, for each facade its own sensors to install, so you could at least the office workers a little more control over the Verdunkler give.

About Sensitive Sensors

But even if the central meteorological station of an office building stands on the roof, explains that not why every day more than the storm shutters because of perceived high risk of change. So often it is not pre-storm gusts that sweep through the office roof.

The fact that the auto still in high wind alerts daily, is usually wrong programmed limits. External blinds threatens only noticeable gusts at risk - not everybody warm breeze, the result of some automatic anspringt. But there is, of course, elaborate and expensive, an individual vote to be found than the very low default values should be used. Building expert Schwandke: "So obviously something must be accurately measured, tested and programmed. It is worthwhile here quite a bit more money for a professional programming and system support issue."

Programmed Blinds

And even if all this does not work if a central sensor in a very bad job on the building wind and light conditions and attaches arg low standard set limits - that is no reason why the decisions of such a limited automatic all occupants office necessary.

Since the early'90s, the wiring in most office buildings very flexible programming - data lines connect the electrical components, bus technique is called in the jargon. Theoretically, this infrastructure is also such a possible scenario: If someone in his office before the blinds five minutes has lowered itself, change the automatic five minutes later, the position of the blades not when its light sensor then determines that it is significantly brighter . Up to a certain critical wind speed automatic lets the office employees total control over the settings of the blinds.

Trust is good, better automatic blinds

Say: A good automatic should and could also see if the office is just can not prescribe how much light they need, because a few minutes before the blinds even so, how they want it. Whether in the office just too light or too dark, white and indeed every human being better than a weather station on the roof of a neighboring tract.

Nevertheless, when automatic blinds are often referred to an action for a long time any manual correction blocked. Building expert Schwandke: "It is sometimes surprising how little plumbers or client employees in an office building trust."

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