Ultraviolet Intensity Measurement Experiment

1 Project Scope

When my daughter (my first child) was still a baby, my father bought a UV sensor so he could measure the UV intensity. Babys are very sensitive to UV light and the worst thing he could image was a baby sunburn.

So I thought, what about creating an alarm sensor that would measure UV intensity continuously. The result is this experiment, years later but no less outdated.

2 Solution Concept

I decided to build up the entire solution on the basis of a PoE 803.af Arduino Ethernet, including measurement of environment data and ambient light, including a solar cell based voltage verification.

There are pairs of ML8511 sensors, one pair simply behind the SiO (Silicium Oxide / Quarz glass), and another pair behind a lowpass UVB filter so that these two can measure exclusively UV-A. The UVB intensity is then the difference between the tutal power in this spectral region minus the UVA.

Here is a nice overview of subnurn effects:

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