Device and method for testing intensity of electromagnetic waves reflected and transmitted by electromagnetic shielding fabrics

Abstract

Disclosed is a device capable of simultaneously testing intensity of electromagnetic waves reflected and transmitted by electromagnetic shielding fabrics. The device comprises a test shielding box, a signal emission device, a reflecting signal receiving device, a transmitting signal receiving device and a fabric holding plate, the test shielding box is manufactured by a metal shielding plate, and an openable seal door is respectively installed at the front end and the rear end of the test shielding box; an inner fixing frame is arranged in the test shielding box, and the fabric holding plate is arranged on the rear side of the inner fixing frame; and the signal emission device is arranged on the front portion of the test shielding box, the transmitting signal receiving device is arranged on the rear portion of the test shielding box, and the reflecting signal receiving device is arranged in front of the inner fixing frame. The device is simple and fast in testing operation, accurate and reliable in testing result, and capable of simultaneously testing intensity of the electromagnetic waves reflected and transmitted by the electromagnetic shielding fabrics and well estimating shielding effectiveness and reflectivity of the electromagnetic shielding fabrics. A testing method meets dark box requirements of shielding effectiveness testing, and accurate ideal data can be obtained, so that references are provided for developing, evaluating and detecting the electromagnetic shielding fabrics.

Description

technical field [0001] The invention belongs to the intercrossing technical fields of textile and clothing science and electromagnetics, and relates to a testing device and method for the shielding performance of electromagnetic shielding fabrics. Background technique [0002] Electromagnetic shielding fabrics, also known as anti-electromagnetic radiation fabrics, can be used to make flexible shields of various shapes, anti-electromagnetic radiation clothing, and substrates of shielding composite materials. It has a wide range of applications in health protection and other fields. Therefore, electromagnetic shielding fabrics are getting more and more attention, and its related technologies are developing rapidly. [0003] However, so far, there has not been a fast and accurate device that can simultaneously measure the reflection and transmission properties of electromagnetic shielding fabrics, making it difficult to correctly and reasonably evaluate the shielding performan...

AI Technical Summary

Problems solved by technology

[0003] However, so far, there has not been a fast and accurate device that can measure the reflection and transmission properties of electromagnetic shielding fabrics at the same time, making it difficult to correctly and reasonably evaluate the shielding performance of electromagnetic shielding fabrics in actual production, research and sales.

Some existing testing methods are expensive and not very specific to electromagnetic shielding fabrics, so it is difficult to guarantee the convenience and accuracy of testing

More importantly, these devices cannot test the reflection and transmission properties of electromagnetic shielding fabrics at the same time, making the test results not comprehensive enough

If tested separately, it increases the complexity of the experiment

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