CPC G01N 21/952 (2013.01) [H05K 1/0203 (2013.01); H05K 7/20218 (2013.01); H05K 2201/10106 (2013.01); H05K 2201/10151 (2013.01)] | 20 Claims |
1. An apparatus, comprising:
a printed circuit board with electronic components mounted thereon, at least one of the electronic components coupled to a liquid cooling system;
a light source; and
a plurality of photosensitive elements, the light source to illuminate a region of the printed circuit board, wherein a first one of the photosensitive elements is to detect a first reflection from the region corresponding to a lack of a presence of coolant from the liquid cooling system in the region, and wherein a second one of the photosensitive elements spaced apart from the first one of the photosensitive elements is to detect a second reflection from the region corresponding to the presence of the coolant in the region.
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