Testing method and system for testing shielding effectiveness of material
A technology of shielding effectiveness and testing methods, applied in the field of materials, can solve the problems of high cost and poor convenience, and achieve the effects of low cost, convenient operation and simplified testing process
Pending Publication Date: 2021-04-23
BEIJING INST OF RADIO MEASUREMENT
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Problems solved by technology
[0004] The embodiment of the present invention provides a testing method and system for testing the shielding effectiveness of materials, which is used to solve the problem that only planar materials can be tested when testing the shielding effectiveness of materials in the prior art, and the cost of testing is high and poor convenience
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no. 3 example
[0077] The third embodiment of the present invention, the embodiment of the present invention is based on the above two embodiments, combined with the attached Figure 1-2 An application example of the present invention is introduced.
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The invention relates to the technical field of materials, in particular to a testing method for testing the shielding effectiveness of a material, which comprises the following steps: arranging a material presetting space between an electromagnetic transmitting device and an electromagnetic receiving device which are oppositely arranged; modulating the electromagnetic emission intensity of the radiation of the electromagnetic transmitting device; before a to-be-tested material is placed in the material preset space, receiving the electromagnetic emission intensity through the electromagnetic receiving device so as to carry out a first electromagnetic receiving test; when the to-be-tested material is placed in the material preset space, receiving the electromagnetic emission intensity through the electromagnetic receiving device so as to carry out a second electromagnetic receiving test; and determining the shielding effectiveness of the to-be-tested material according to the test results of the first electromagnetic receiving test and the second electromagnetic receiving test. When the to-be-tested material is tested, the to-be-tested material does not need to be pressed and fixed, the to-be-tested material is directly placed in the material preset space, a to-be-tested material sample plate of a non-flat-plate structure can be tested, the testing process is greatly simplified, the operation is convenient, and the cost is low.
Description
technical field [0001] The invention relates to the field of material technology, in particular to a testing method and system for testing material shielding effectiveness. Background technique [0002] As a new form of pollution, electromagnetic radiation not only endangers human health and causes mutual interference between electronic devices, but also endangers national information security after electromagnetic information leakage. Electromagnetic shielding is one of the main technical measures to suppress electromagnetic interference. The scope of application widely. At present, the shielding effectiveness test of materials is generally based on the national standard GB / T52471 "Measurement Method of Shielding Effectiveness of Electromagnetic Shielding Coating", the electronic industry military standard SJ20524 "Measurement Method of Material Shielding Effectiveness" and the national military standard GJB6190 "Measurement Method of Material Shielding Effectiveness" cond...
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Login to View More IPC IPC(8): G01R29/08
CPCG01R29/0835G01R29/0871
Inventor 葛毅闫伟任冠宇郭林林涛
Owner BEIJING INST OF RADIO MEASUREMENT