An enhanced process for the production of a dianhydrosugar, such as isosorbide, from the corresponding sugar alcohol is described. The actuation electrode is disposed on a substrate. At least one sound or electromagnetic waves beam is then produced in a determined reference line or plane and the passage of the anode in the beam is used to measure the distances. The processor determines that there has been a security breach of the enclosure at least in response to detecting IR activity in the enclosure from the IR detection signals that does not correspond to the IR profile. The pixel data pulse has a pulse voltage corresponding to pixel data derived from the input image signal.