A capacitance tomography detection device for dielectric functional gradient insulation

Abstract

The invention discloses a capacitance chromatography assay device used for dielectric functional gradient insulation. 3D printing equipment is used for printing an electrode structure after performingelectromagnetic simulation on a tested object; the electrode structure is connected with a capacitance measuring tester by a relay module to perform capacitance chromatography detection under the excitation voltage of 1MHz and 1V, and controls the area and position of a measurement and excitation polar plate by a network relay module; and the network relay module and the capacitance measuring tester are connected with a PC by a network switch to be used for data transmission. According to the invention, high-precision capacitance collection equipment is combined with the relay module, so as to realize automatic measurement of capacitance values among different polar plates; compared with conventional capacitance chromatography devices, the measurement precision is relatively high, and thecost is relatively low.

Description

technical field [0001] The invention belongs to the technical field of non-destructive testing, and in particular relates to a capacitance tomography testing device for dielectric functional gradient insulation. Background technique [0002] Since its invention in the 1980s, Electrical Capacitance Tomography (ECT) technology has been used in many industrial fields such as multiphase flow monitoring and flame monitoring due to its advantages of non-invasiveness, real-time performance, no radiation, and relatively low price. Wide range of applications. The principle is to invert the spatial distribution of the dielectric constant inside the field according to the capacitance value measured at the field boundary, so as to obtain the distribution of the inhomogeneous medium. [0003] At present, capacitance chromatography is mainly used in the detection of gas-solid two-phase or gas-solid-liquid multiphase flow. In recent years, newly emerging dielectric functionally graded ma...

AI Technical Summary

Problems solved by technology

However, the electrode structure of the traditional capacitance tomography device is usually tubular or square, and the electrode structure with complex geometric shapes has shortcomings such as insufficient installation accuracy and difficulty in manufacturing, which needs to be improved in the process of applying to dielectric functionally graded materials; at the same time, the traditional ECT detection The device requires special hardware equipment (computer, acquisition card, etc.), which cannot realize remote online measurement, and because it needs special acquisition card, host computer and other hardware, the price is relatively expensive, and there is an urgent need for a set of cost-effective, High-precision ECT measurement device

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