Miniature spiral in-site continuous penetrating TDR probe device
A spiral, in-situ technology, applied to measuring devices, instruments, and material analysis through electromagnetic means, can solve the problems of reduced detection accuracy and achieve the effect of effective permittivity and conductivity
Pending Publication Date: 2019-11-01
ZHEJIANG UNIV CITY COLLEGE
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Problems solved by technology
The probes of traditional TDR probes are distributed in a straight line. When miniaturization, the length of the probes will decrease with the shortening of the probe size, which will greatly reduce the detection accuracy.
Method used
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[0017] The present invention will be further described below in conjunction with drawings and embodiments.
[0018] Such as figure 1 , figure 2 , image 3 As shown, the present invention includes a first TDR electrode 1, a second TDR electrode 2, an insulating rod 3, a first connecting bolt 4, a second connecting bolt 5, an epoxy ring layer 6, a coaxial cable 7, and a signal exciter 12 And information collector 13;
[0019] The first TDR electrode 1 and the second TDR electrode 2 are distributed on the surface of the insulating rod 3 in a spiral form from the top to the bottom of the insulating rod 3 at a certain angle, and an epoxy resin ring layer 6 is arranged on the top of the insulating rod 3, and the first connecting bolt 4 One end of the first TDR electrode 1 is fixed on the epoxy resin ring layer 6, one end of the second TDR electrode 2 is fixed on the epoxy resin ring layer 6 by the second connecting bolt 5, and one end of the first connecting wire 10 is connected...
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The invention discloses a miniature spiral in-site continuous penetrating TDR probe device. Two electrodes are separated at a certain angle and are spirally distributed on a surface of an insulation rod from the top to the bottom of the insulation rod, an epoxy resin annular layer is arranged at the top of the insulation rod, two connection bolts are used for fixing one end of a TDR electrode on the epoxy resin annular layer, one end of each of two connection wires is connected with end parts of the bolts, the other ends of the two connection wires are respectively connected with an outer conductor and an inner conductor of a coaxial cable in the epoxy resin annular layer, the outer conductor is connected with an information acquisition device, the inner conductor is connected with a signal simulator, a received signal is analyzed and drawn to form a waveform pattern, and a dielectric constant and conductivity of a soil body are calculated according to the waveform pattern. At the samesize, the length of the TDR probe can reach 1.57 times of the length of a traditional probe, thus, the detection accuracy can be improved by 57%, and the dielectric constant and the conductivity of the soil body can be more effectively collected and analyzed.
Description
technical field [0001] The invention relates to an in-situ continuous penetration TDR probe device, in particular to a miniature spiral in-situ continuous penetration TDR probe device. Background technique [0002] The in-situ continuous penetration TDR probe device uses two stainless steel needles as TDR electrodes to test the dielectric constant and electrical conductivity of the soil through TDR technology, so as to complete the monitoring of soil moisture content and pollution degree. The probes of traditional TDR probes are distributed in a straight line. When miniaturization, the length of the probes is shortened with the size of the probes, which will greatly reduce the detection accuracy. In order to meet the requirements of miniaturization of TDR probes and ensure that the detection accuracy is not reduced, it is necessary to invent a new in-situ continuous penetration TDR probe. Contents of the invention [0003] The purpose of the present invention is to provid...
Claims
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IPC IPC(8): G01N27/04G01N27/22
CPCG01N27/041G01N27/048G01N27/221G01N27/223
Inventor 尹鑫晟朱凌韬丁金婷魏纲丁智魏新江
Owner ZHEJIANG UNIV CITY COLLEGE