压电式土壤湿度计在农业自动化中的应用  

Applying of Piezoelectric Type Soil Hygrometer in Agriculture Automation

作　　者：闫兵[1] 

机构地区：[1]辽宁石油化工大学职业技术学院,辽宁抚顺113001

出　　处：《农机化研究》2009年第7期215-217,共3页Journal of Agricultural Mechanization Research

摘　　要：压电式土壤湿度计是利用固态压力传感器将土壤湿度计测得的土壤吸力值转换为电压值,供二次仪表(数字仪表或自动记录仪)测量和显示。压电式土壤湿度计由张力计、压力传感器、显示仪表及电源等部分组成。其电压信号经过A/D转换器与接口电路输入微型计算机,进行数据处理,可作为数据库或进行复杂的数值运算或与灌溉系统联接起来,实现微机控制的闭环自动灌溉系统。压电式土壤湿度计在农业自动化中将会发挥越来越大的作用。The piezoelectric type soil hygrometer uses solid state pressure transducer and converts the value of soil attraction messured by soil hygrometer to the voltage so that secondary meter messures and shows. The piezoelectric type soil hygrometer is made of tensiometer and pressure transducer and display instrument and electrical source. The signal voltage inputs microcomputer through A/D converter and interface and deal with data so that it regards as database or computes complicated numerical value or it connects to irrigation system in order to realize closed loop automatic irrigation system controled by microcomputer. The piezoelectric type soil hygrometer will be widely used in agriculture automation.

关 键 词：压电式 土壤 湿度计 农业 

分 类 号：S152.71[农业科学—土壤学]