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Anti-electromagnetic radiation textile simulating and testing instrument

An anti-electromagnetic radiation, tester technology, applied in the use of wave/particle radiation for material analysis, instruments, measurement of electricity, etc., can solve the problems affecting the accuracy and reliability of test results, complex interference waves, etc., to achieve simple structure, Accurate test results, accurate test results

Inactive Publication Date: 2009-09-09
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

However, because this test method and its test instruments are not specially designed for the textile field, there are some test obstacles in the test process, especially for flexible test objects, complex surfaces will cause complex interference waves, which will affect the accuracy of the test results. Accuracy and Reliability

Method used

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  • Anti-electromagnetic radiation textile simulating and testing instrument
  • Anti-electromagnetic radiation textile simulating and testing instrument
  • Anti-electromagnetic radiation textile simulating and testing instrument

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Embodiment Construction

[0021] see figure 1 , 2 , when testing the insertion loss, the two ends of the flange coaxial device 2 are respectively connected to the output and input ends of the vector network analyzer 1 through an attenuator 3; the so-called insertion loss refers to the insertion loss, that is, the transmitting device and the receiving device Among them, the signal loss caused by inserting cables or components is expressed in decibels (db) corresponding to the received signal level, and is generally used to measure the transmittance. When testing the return loss, the flange coaxial device 2 is connected to the vector network analyzer 1 by means of a reflection bridge 4 , and the other end of the flange coaxial device 2 is connected to a matching load 5 . The so-called return loss refers to the measurement of the component of the input power reflected from the flange coaxial device, which is generally used to measure the size of the reflectivity; the matching load 5 is a radio frequency ...

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Abstract

The invention relates to an anti-electromagnetic radiation textile simulating and testing instrument which is used for simulating and testing textile material. The technical proposal is as follows: a structure comprises a vector network analyzer and a flange coaxial device. The flange coaxial device is connected with an insertion loss or return loss test loop of the vector network analyzer. The middle part of the flange coaxial device is provided with a sample frame. The outer edge of the sample frame is provided with winding gaps with uniform intervals, wherein, the spaces of the winding gaps at the edge are same. The center of the sample frame is provided with a circular hole which is coaxial with a cavity in the flange coaxial device. Electromagnetic wires forming textile to be tested are wound at the winding gaps. The anti-electromagnetic radiation a textile simulating and testing instrument can simulate and test the textile with the electromagnetic wire array of different densities and provides reliable and exact data basis for designing anti-electromagnetic radiation textile satisfying the requirement further, and the anti-electromagnetic radiation textile simulating and testing instrument has simple structure and can test soft and hard plane material exactly.

Description

technical field [0001] The invention relates to a testing device for the anti-electromagnetic radiation performance of textile materials capable of simulating the structure of anti-electromagnetic radiation fabrics, and belongs to the field of measurement technology. Background technique [0002] At present, there are many test methods on the shielding effectiveness of anti-electromagnetic radiation fabrics at home and abroad. These test methods are summarized into three categories: far-field method, near-field method and shielding room test method. The far-field method mainly includes the ASTM-ES-7 coaxial transmission line method and the flange coaxial method, and the near-field method mainly includes the ASTM-ES double box method and the improved MIL-STD-285 method. [0003] A common defect of existing testing instruments is that they can only measure the anti-electromagnetic radiation performance of finished fabrics, but for designers, in most cases, they hope to predict...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/00G01R31/00
Inventor 李瑞洲张丽娟庞金玲敖利民贾立霞
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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