一种林业手持式多功能测树仪设计

Design of a hand-held type multifunctional dendrometer applied in forestry

针对森林调查对便携式测量设备自动化和集成化的需求,设计了一种集测高器、角规和标准蓄积量计算功能于一体,具有测量、数据存储、计算等多种功能的手持式多功能电子测树仪GForest。该仪器通过采样控制算法实现对测高器防抖动设计,采用计数器存储并控制角规计数结果,提供USB接口同PC和移动智能终端设备进行数据共享,旨在解决目前森林地面调查数据采集硬件设备信息化与数据采集软件发展不同步的问题,大幅减少了外业调查中手工数据记录和录入的工作,提高了野外数据采集的效率。经实测验证:GForest测得的立木高度与实际值的平均误差为4%,与进口同类设备精度持平,同时还具有角规绕测计数与控制等实用功能,且具有明显的成本优势,适合在行业内推广应用。

Aiming at demand of automation and integration of portable equipments used in forest survey, a hand- held type multifunctional gauge, GForest, is designed with a prototype. GForest integrates height indicator, angle gauge and the computation of forest stand＇ s volume all together and thus has functions including measurement, data storage and campntation and other functions. GForest realizes anti-shake design through sampling control algorithm, use counter to store and control result of angle gauge counting and share datas with other equipments such as PCs and mobile intelligent terminal through USB port, aiming to solve problem of desynchrony of development of informationization of hardware equipments used for data collection in forest ground survey and data collection software. By this design, GForest can reduce hand works of data recording and typing-in in forest outdoor survey by a large extent and improve efficiency of outdoor data collection, through test and verification, the tested average error of tree height measurement using GForest is 4% ,which shows the same outstanding performance as the similar import devices, furthermore, it has utility functions of angle gauge winding test and control, and has obvious advantage in cost which makes GForest suitable for application in industry.