Abstract: A NOx sensing device includes at least one pair of spaced electrodes, at least one of which is made of a conductive oxide, and an oxygen-ion conducting material in bridging electrical communication with the electrodes.

Abstract: A laser scanner is located in a fixed position to have line-of-sight access to key features of monitored objects. The scanner rapidly scans pre-programmed points corresponding to the positions of retroreflecting targets affixed to the key features of the objects. The scanner is capable of making highly detailed scans of any portion of the field of view, permitting the exact location and identity of targets to be confirmed. The security of an object is verified by determining that the cooperative target is still present and that its position has not changed. The retroreflecting targets also modulate the reflected light for purposes of returning additional information back to the location of the scanner.

Abstract: The optical waveguide connector comprises at least two optical waveguides abutting at a joint, the waveguides having a diameter variance in a predetermined range; a cover at least partially enclosing at least two optical waveguides, the cover having a first end, a second end, and an interior annular space; a collet proximate each first end and second end of the cover and removably coupled to an optical waveguide; and a sleeve removably abutting each collet and circumferentially surrounding the cover and each collet.