Patent ID: 11927547
Assignee: JIANGSU MATHE INTERNET OF THINGS TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. A detection method for water content and conductivity with the detection system as recited in claim 1, comprising steps of:
(1) by the microprocessor, controlling the signal generator to output a microwave signal; by the power divider, dividing the microwave signal into two signals and respectively outputting to the measurement side circuit and the reference side circuit;
(2) firstly calibrating a phase difference signal respectively under a water-free condition and a pure water condition, obtaining values of the phase difference signal respectively under water contents of 0% and 100%, and storing into the microprocessor; wherein if the measured medium, which the measurement side circuit contacts, contains water, a transmission speed of a microwave signal on the measurement wire is reduced, and the microwave signal on the measurement wire produces a phase shift with a microwave signal on the reference wire; through comparing phases of the microwave signals outputted by the measurement wire and the reference wire, outputting a phase difference signal by the amplitude and phase discriminator and then transmitting to the microprocessor, wherein the phase difference signal corresponds to a phase difference between the microwave signals of the measurement wire and the reference wire; through calculating by the microprocessor, obtaining a water content of the measured medium; and
(3) firstly calibrating an amplitude difference signal respectively under a water-free condition and a condition with a full measuring range of conductivity, obtaining minimum and maximum calibration values of the amplitude difference signal, and storing into the microprocessor; wherein if the measured medium, which the measurement side circuit contacts, contains water or minerals, a conductivity of the measured medium is increased, and an amplitude of the microwave signal of the measurement wire is attenuated relative to an amplitude of the microwave signal of the reference wire; through comparing the amplitudes of the microwave signals outputted by the measurement wire and the reference wire, outputting an amplitude difference signal by the amplitude and phase discriminator and then transmitting to the microprocessor, through calculating by the microprocessor, obtaining the conductivity of the measured medium; and obtaining a corresponding mineralization rate according to the conductivity.