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Microwave shielding clothes shielding efficiency testing system

A technology of shielding effectiveness and testing system, which is applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems of inconsistent shielding effectiveness, complex electromagnetic environment of shielding clothing, inaccurate data, etc., and achieves a large dynamic range of testing and saves testing cost, test precise effect

Pending Publication Date: 2017-07-11
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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AI Technical Summary

Problems solved by technology

In an ideal state, E2E1, and the shielding effectiveness is negative. It is concluded that the field strength of the shielded clothing is stronger than that of the non-shielded clothing, which leads to the measured value and the actual shielding effectiveness of the shielded clothing. Do not match, so the test data obtained by the existing method is inaccurate

Method used

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  • Microwave shielding clothes shielding efficiency testing system

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Embodiment Construction

[0022] In order to avoid the impact of resonance on the negative shielding effectiveness of test results, the present invention provides a shielding effectiveness test system for microwave shielding clothing. The present invention will be described in detail below with reference to the accompanying drawings.

[0023] attached figure 1 It is a schematic diagram of the structure of the microwave shielding clothing shielding effectiveness test system, as shown in figure 1 As shown, the system includes a reverberation room, a signal generator, a transmitting antenna, a human body model, and a receiving probe; the reverberation room is a shielded room made of highly reflective materials, and the reflectivity of the inner surface is generally higher than that of the shielded room. The receiving probe is placed inside the mannequin, the transmitting antenna and the mannequin are placed in the reverberation chamber, the signal generator is connected to the transmitting antenna through...

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Abstract

The invention belongs to the microwave shielding clothes shielding efficiency detection field, especially relates to a microwave shielding clothes shielding efficiency testing system, and aims to solve the problems that the microwave shielding clothes shielding efficiency test data is inaccurate under a resonant condition. The microwave shielding clothes shielding efficiency testing system comprises a reverberation chamber, a signal-generator, an emission antenna, a human body model and a reception probe. A novel controllable electromagnetic environment-the reverberation chamber is built so as to carry out the microwave shielding clothes shielding efficiency test; the microwave shielding clothes shielding efficiency testing system needs no absorbing material and large power amplifier, thus saving detection cost; in addition, the device can effectively prevent negative shielding efficiency influences on the testing result under the resonant condition, thus scientifically evaluating the microwave shielding clothes shielding efficiency, and providing reasonable and scientific data for the microwave shielding clothes shielding efficiency evaluations.

Description

technical field [0001] The invention belongs to the field of detecting the shielding effectiveness of microwave shielding clothing, in particular to a shielding effectiveness testing system for microwave shielding clothing. Background technique [0002] The function of microwave shielding clothing is mainly to reduce the influence of external electromagnetic waves on the human body and equipment in the shielding clothing. The existing microwave shielding clothing shielding test method is mainly based on "GB / T 23463-2009 Protective Clothing Microwave Radiation Protective Clothing". The specific method of the test is to create an electromagnetic environment in an anechoic chamber or an open field, and place the mannequin in this environment. , and place a field strength probe inside the mannequin. When the test field strength remains unchanged, it is calculated by comparing the ratio of the field strength detected by the internal field strength probe before and after the manne...

Claims

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Application Information

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IPC IPC(8): G01R29/08
CPCG01R29/0835
Inventor 范杰清高娟郝建红
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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