Portable tubular shielding effectiveness measuring device and method of electromagnetic shielding fabric

A technology of shielding effectiveness and electromagnetic shielding, applied in the direction of electromagnetic field characteristics, etc., to achieve accurate and reliable results, easy to carry, and low cost

CN102928678BInactive Publication Date: 2014-09-03ZHONGYUAN ENGINEERING COLLEGE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2014-09-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

A portable tubular shielding effectiveness measuring device of an electromagnetic shielding fabric comprises a signal emitting tube and a signal receiving tube which are connected with each other through threads. A miniature signal emitting device is arranged at the bottom of the signal emitting tube, and a miniature signal receiving device is arranged at the bottom of the signal receiving tube. The testing operation is easy, fast and convenient, and by means of the portable tubular shielding effectiveness measuring device, the shielding effectiveness of the electromagnetic shielding fabric can be tested fast. The testing device can be carried with users, is suitable for field measurement, has no requirements on the environment, is accurate and reliable in result and capable of well evaluating the shielding effectiveness of the electromagnetic shielding fabric, is light and handy and convenient to carry, can hold sample cloth of the electromagnetic shielding fabric to be tested, and fully ensures tightness of a testing tube to enable the testing results to be accurate. The signal emitting device and the signal receiving device can be chosen randomly, so that wideness in testing is increased. In fabric holding, a fabric blocking ring, a fabric holding ring and a bonding ring are matched for fixing, so that the fabric can be held effectively, and tightness of the testing tube can be ensured.
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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 effectiveness 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] Shielding effectiveness is a key indicator for evaluating electromagnetic shielding fabrics. However, so far, there is no convenient, fast and accurate device for measuring the shielding effectiveness of electromagnetic shielding fabrics, which makes it...

Examples

Embodiment Construction

[0020] Such as Figure 1~7 As shown, a portable tube-type measuring device for the shielding effectiveness of electromagnetic shielding fabrics includes a signal transmitting tube 1 and a signal receiving tube 12, and the signal transmitting tube and the signal receiving tube are connected by threads. The bottom 7 of the signal transmitting tube is provided with a miniature signal transmitting device 6 , and the bottom 13 of the signal receiving tube is provided with a miniature signal receiving device 14 .

[0021] The signal transmitting tube is cylindrical, and a miniature signal transmitting device is installed in the inner center of the cylindrical bottom surface. The signal transmitting tube is made of extremely smooth pure metal inside, with a wall thickness of 0.1-1.5cm, a length of 10cm-50cm, and a diameter of 3cm-30cm. The micro-signal transmitter 6 is installed on its bottom surface 7 in a fixed manner or in a spiral manner; the wire 16 of the micro-signal transmit...