DEVELOPMENT OF 2D OPTICAL MEASUREMENTS

The analysis of 2D measurement methods and means is presented. The actual optical-electronic devices using bar codes are discussed. The correlation functions of measuring and reference codes in the electronic level instrument are calculated showing possible errors in height determination. The new electronic level design is proposed simplifying the main design and as well as the meter of the level. The principal correlation and error determination equations are given, and the diagrams of the new design are included.