【摘要】 为了便于对树木直径生长特征的分析,介绍了一种可代替测径围尺的专用于测量树木直径的测量仪。仪器采用超声波测距技术、条码识别技术及光电技术,可实现单株立木测量高度的确定和直径信息的识别,以及测量数据的自动读取和记录,提高了统计效率,方便了对数据的查询与分析。通过实验验证,仪器与围尺测量的相对误差在±1%以内,达到了预期设计指标。更多还原

【Abstract】 A kind of measuring instrument for tree diameter, which can replace tape measures, is introduced for the convenience of analysis on the growth characteristic of tree diameter. Ultrasonic range technology was applied to measure tree height, and barcode discerning technology to identify diameter data message. The measuring instrument can read and record the measuring data by photoelectric technology, which can improve statistical efficiency and provide a convenient way for inquiry and analysis of the measuring data. The testing result verified the less relative error of this instrument (within±1%) compared with tape measures, and the expected design index was fulfilled.更多还原