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Moisture detection equipment, electric conductivity detector, the sensor network system, program, moisture detection method and the electrical conductivity detection method
Moisture detection equipment, electric conductivity detector, the sensor network system, program, moisture detection method and the electrical conductivity detection method
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机译：水分检测设备，电导率检测器，传感器网络系统，程序，水分检测方法和电导率检测方法
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摘要
PROBLEM TO BE SOLVED: To provide a technique for accurately and inexpensively detecting moisture content and electrical conductivity of soil.;SOLUTION: A sensor 6 includes; a pair of electrodes 68, 69 to be put into contact with culture soil 8; a signal generator unit 70 which feeds a first AC input electrical signal and a second AC input electrical signal to the electrode 69; a second resistor 72 located between the electrode 69 and the signal generator unit 70; an absolute value detection circuit 73 which measures an absolute value |Z| of impedance based on the first input electrical signal and an output electrical signal; a phase detection circuit 74 which measures impedance phase difference φ by means of resistive voltage division based on the second input electrical signal and the output electrical signal; and a CPU 60 which determines resistance R between the pair of electrodes 68, 69 based on the absolute value |Z| of impedance, and determines moisture content θ by solving an equation that is approximated to correlate only with the moisture content θ on the basis of the impedance phase difference φ measured by the phase detection circuit 74 and the resistance R.;COPYRIGHT: (C)2014,JPO&INPIT
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机译：解决的问题：提供一种准确而廉价地检测土壤的水分含量和电导率的技术。解决方案：传感器6包括：一对与培养土8接触的电极68、69。信号发生器单元70将第一AC输入电信号和第二AC输入电信号馈送到电极69;位于电极69和信号发生器单元70之间的第二电阻器72;测量绝对值| Z |的绝对值检测电路73。基于第一输入电信号和输出电信号的阻抗;相位检测电路74基于第二输入电信号和输出电信号，通过电阻分压来测量阻抗相位差φ。 CPU 60根据绝对值| Z |确定一对电极68、69之间的电阻R。阻抗，并根据由相位检测电路74测得的阻抗相位差φ和电阻R，通过求解近似仅与水分含量θ相关的方程式来确定水分含量θ。 2014年，日本特许厅＆INPIT
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