数字水准仪测量所需最短条码长度的研究

Study on the Minimum Bar Code Length Required for Digital Level Measurement

在水准测量中,部分标尺被遮挡会造成数字水准仪无法识别,不能正常读取。通过对条码尺上下对称遮挡测量,得到三种不同型号的数字水准仪在不同视距下正确测量所需要的最短条码长度,结合条码尺的编码规律,分析了所需最短条码长度的变化规律。并在此基础上研究了误刻和不对称遮挡对测量的影响。

In the leveling,part of the staff code blocked will cause the digital level cannot read.In this paper,the minimum bar code length required for the correct measurement of the three different levels of digital level is obtained by measuring the upper and lower symmetrical occlusion of the bar code,and the variation rule of the shortest bar code length is analyzed according to the coding rule of the bar code.And on this basis,the effects of erroneous and asymmetric occlusion on the measurement are studied.