GRAIN ANGLE SENSOR

摘要

A method of determining grain characteristics of a piece of wood is disclosed. The method comprises selectively illuminating multiple discrete spot areas on a wood surface and then detecting light reflected from respective discrete spot areas with respective sets of sensors. Each set of light sensors is sensitive to reflections from a respective spot area, and includes light sensors that belong to at least two other sets of light sensors. The method the comprises controlling selective simultaneous illumination of multiple spot areas to obtain reflection data with respective sets of simultaneously activated light sensors for each of the spot areas illuminated simultaneously such that the sets of sensors simultaneously illuminated are non-overlapping.