I am working on a HVAC project where lizard in going inside the electrical unit and causing wire damage and short circuit. I need to find some solution to detect or repel lizard before any catastrophic situation. Since lizard are cold blooded species, I cannot use IR head index measurement methods or PIR sensor. Also, lizard are very small creature so method need to be foolproof.
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3An obvious "low-tech" answer would be something like wire mesh to prevent the lizards getting in, but maybe I'm missing something here... – alephzero Jun 05 '18 at 09:43
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Would this be better on the Biology SE? Seems to be more about Lizards, thhan HVAC systems? – Jonathan R Swift Jun 05 '18 at 09:53
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It's difficult to make something foolproof as fools are so ingenious... – Solar Mike Jun 05 '18 at 10:08
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1cold-blooded animals still have temperature gradients. Further, are you implying it's acceptable for warm-blooded animals to invade your space? – Carl Witthoft Jun 05 '18 at 17:48
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A camera with provided lighting (IR is okay) within the duct (area where no stray moving objects should appear) would be perfectly okay for detection. Lizards aren't invisible. Now, stopping the lizards might be trickier.
I think though, that the best approach would be to make the intakes/exhausts to face downwards and grease the walls - or include a T-shape section, with a service hatch on the short downwards facing segment, thoroughly greased. Detection no longer required.
SF.
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