Sensing apparatus and material sensing method

A sensing apparatus includes a probe and a sensing module. The sensing module includes a material sensing circuit, an operation unit and a signal output circuit. The sensing module generates a frequency sweep signal and sends the frequency sweep signal to the probe to sense a state of a material. Th...

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Bibliographic Details
Main Authors CHENG, CHAO KAI, HOU, YI LIANG, HUANG, YIN LUN, LIN, I CHU
Format Patent
LanguageChinese
English
Published 01.02.2018
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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Summary:A sensing apparatus includes a probe and a sensing module. The sensing module includes a material sensing circuit, an operation unit and a signal output circuit. The sensing module generates a frequency sweep signal and sends the frequency sweep signal to the probe to sense a state of a material. The frequency sweep signal is a plurality of signals having different frequencies from each other in a predetermined frequency range. When the frequency sweep signal touches the material, an equivalent capacitance of the material is utilized to generate a reflected signal. The material sensing circuit receives the reflected signal and sends the reflected signal to the operation unit. The operation unit operates the reflected signal to generate a waveform signal to determine the state of the material. The operation unit utilizes an impedance spectrum to determine the state of the material.
Bibliography:Application Number: TW20160140869