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Scientists have developed sensors that detect aircraft icing in real time
[ Instrument Network Instrument Development] According to foreign media reports, although the ice formed on the wing is the main cause of the crash, these ice are still mainly found through the eyes, and this is easily affected by human error. But now a new sensor may change this situation because it uses microwaves to instantly detect the formation of ice, which may not be observed by pilots or ground crews.
It is reported that this device called a planar microwave resonator sensor was developed by the University of British Columbia at Okanagan, Canada. It is mainly made of metal deposited on a thin layer of plastic, so it is strong enough to withstand various tests. And its manufacture is simple and low cost.
In short, it works by measuring how the resonant frequency, amplitude, and scattering pattern of the emitted microwave are detected by any water, frost, or ice changes that may be present on its surface. In laboratory tests, it was able to detect frost formation within a few seconds of cooling below freezing.
In contrast, human observers may wait until the sensor is at -10 ° C for about two minutes before it can see frost. However, as the researchers point out, this is only a small sample in the lab, and it is much more difficult to find the icing on the entire wing in an outdoor environment.
However, this technique can detect when icing has returned to liquid water, so it can be used to confirm that de-icing is in place.
Related research reports have been published in Sensors and Actuators B: Chemical.
(Original title: Scientists have developed sensors that can detect aircraft icing in real time)