应用电流法测量土壤圆锥指数  

Measurement of Soil Cone Index Suing Current Method

作　　者：曾庆猛[1] 孙宇瑞[1] 马道坤[1] 林剑辉[1] 汪懋华[1] 

机构地区：[1]中国农业大学精细农业研究中心

出　　处：《农业机械学报》2006年第9期61-63,共3页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金资助项目(项目编号:30370823);高等学校博士学科点专项基金资助项目(项目编号:20030019012);国家"863"高技术研究发展计划资助项目(项目编号:2001AA209040)

摘　　要：圆锥指数仪是农业上用于测量土壤压实度的专用设备。基于机/电能量守恒原理,定量分析了测量过程中直流电动机输出功率与锥杆作用力之间的能量传递关系,提出了一种根据电动机电流来测量土壤圆锥指数的方法。试验结果证实了该方法的可行性。Cone index penetrometer is a special apparatus widely used for assessing soil compaction in agriculture. In this paper a current sensor was used to determine soil cone index. Unlike that of the conventional penetrometer, the measurement principle was based on the energy transformation of the output power of DC motor and the penetration force. In order to better understand this method, a theoretical analysis was discussed in terms of the penetrating process. Furthermore, a laboratory test was conducted and the results demonstrated that the method can be employed to renovate the conventional penetrometers.

关 键 词：圆锥指数 电流传感器 测量 土壤压实度 

分 类 号：S129[农业科学—农业基础科学] TU413.5[建筑科学—岩土工程]