Electromagnetic radiation protection method, protection material and preparation method for automobile interior space

A technology for electromagnetic radiation protection and automobiles. It is applied in the direction of electrical components, magnetic field/electric field shielding, etc. It can solve problems such as inability to absorb and shield electromagnetic radiation, influence of wireless communication signals, and unusable equipment, so as to improve the protection effect and ensure health and safety. Safe and prevent the effect of continuous accumulation of radiation dose

Active Publication Date: 2021-12-07
广东高鑫信息股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the composite wave-absorbing shielding material provided by this patented technology has a total thickness of less than 1mm, which is only suitable for electromagnetic wave absorption and electromagnetic interference suppression in high-frequency and intermediate-frequency bands, and cannot effectively absorb electromagnetic radiation from 0.9MHz to 1.8GHz. and shielding, especially that it cannot provide differentiated protection for specific spatial areas according to the needs of occupants in the vehicle
Since the occupants in the car (sitting in different positions) are exposed to different radiation frequencies and intensities, the protection strengths they need to take are also different; at the same time, occupants often need to use mobile smart phones, wireless earphones ( Bluetooth) and other wireless devices, if indiscriminate electromagnetic shielding is performed on the entire car interior space, it will have a serious impact on the wireless communication signal between 820Mhz-2.4GHz, making the above devices unusable, so it is necessary to protect the car interior space Carry out differentiated protection to protect the safety of the occupants in the car without affecting the normal wireless communication

Method used

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  • Electromagnetic radiation protection method, protection material and preparation method for automobile interior space
  • Electromagnetic radiation protection method, protection material and preparation method for automobile interior space
  • Electromagnetic radiation protection method, protection material and preparation method for automobile interior space

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Please see attached Figure 1-4 , the method for protecting electromagnetic radiation in the interior space of automobiles provided by the present embodiment includes the following steps: preparing an automobile electromagnetic radiation protecting material 11 with a layered composite structure, which includes a shielding layer 1 and an electromagnetic wave absorbing layer that are sequentially stacked and connected from top to bottom 2 and the scattering layer 3, the total thickness of which is not less than 20mm; multiple electromagnetic radiation sources within a set frequency range in the vehicle 10 are used as the projection source, the electromagnetic wave propagation direction emitted by each electromagnetic radiation source is used as the projection direction, and the driver and passengers in the vehicle The local three-dimensional space where the torso of the body is located is the target setting protection projection area 9; between the projection direction of ...

Embodiment 2

[0093] Please refer to the attached Figure 5-6 , the automobile interior space electromagnetic radiation protection method provided by the present embodiment, automobile electromagnetic radiation protection material and preparation method thereof, it is basically the same as embodiment 1, and its difference is: shielding layer 1, electromagnetic wave absorbing layer 2, scattering layer 3 thickness and specific preparation method.

[0094] The thickness of the shielding layer 1 is 2mm.

[0095] The thickness of the electromagnetic wave absorber 2 is 12mm.

[0096] The thickness of the scattering layer 3 is 2 mm.

[0097] The preparation process of the electromagnetic radiation protection material is as follows:

[0098] S1: Select an iron-nickel alloy with an iron-nickel composition of 1:1, make it into a metal wire with a wire diameter of 0.3 mm, and then weave the metal wire into an iron-nickel alloy layer 4 with an aperture of 30 meshes for use; among them, the iron-nick...

Embodiment 3

[0106] Please refer to the attached Figure 5-6 , the automobile interior space electromagnetic radiation protection method provided by the present embodiment, the automobile electromagnetic radiation protection material and the preparation method thereof are basically the same as Embodiment 1 and 2, the difference being that the shielding layer 1, the electromagnetic wave absorbing layer 2, the scattering The thickness of layer 3 and the specific preparation method.

[0107] The thickness of the shielding layer 1 is 4mm.

[0108] The thickness of the electromagnetic wave absorber 2 is 14mm.

[0109] The thickness of the scattering layer 3 is 4mm.

[0110] The preparation process of the electromagnetic radiation protection material is as follows:

[0111] S1: Select an iron-nickel alloy with an iron-nickel composition of 1:1, make it into a metal wire with a wire diameter of 0.5 mm, and then weave the metal wire into an iron-nickel alloy layer 4 with an aperture of 50 meshe...

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PUM

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Abstract

The invention discloses a method for protecting electromagnetic radiation in an automobile interior space, a protective material and a preparation method thereof. The method for protecting electromagnetic radiation in an automobile interior space comprises the following steps: preparing an automobile electromagnetic radiation protection material; The electromagnetic radiation source is the projection source, and the electromagnetic wave propagation direction emitted by each electromagnetic radiation source is the projection direction, and the local three-dimensional space where the torso of the driver and passengers in the vehicle is located is the target to set the protection projection area; in the projection of each projection source Between the direction and the protection projection area, one or more automobile electromagnetic radiation protection materials are set; the present invention makes it form multiple protection projection areas in the local space of the vehicle through the reasonable setting of the electromagnetic radiation protection material, and realizes the specific protection of the vehicle interior. Absorption and shielding of electromagnetic radiation in a specific local space area of ​​0.9MHz‑1.8GHz frequency band, to meet the requirements of electromagnetic radiation protection for occupants inside the car without affecting normal communication.

Description

technical field [0001] The invention relates to the technical field of electromagnetic protection and materials, in particular to a method for protecting electromagnetic radiation in an automobile interior space, a protective material and a preparation method thereof. Background technique [0002] With the electrification and intelligence of automobiles, more and more electronic equipment such as motors, batteries, electronic controls, electrical appliances, and communications are used in automobiles. The occupants of the automobile are exposed to the electromagnetic environment and will be emitted by various interference sources in the automobile. Influenced by the radiation of electromagnetic waves, its personal safety is threatened to a certain extent, and in electric vehicles with more electronic and electrical equipment, this hazard is particularly serious. [0003] With the wide application of electronic and electrical equipment in various vehicles, especially electric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K9/00
CPCH05K9/00H05K9/0088
Inventor 颜铄清翟文正曹粲贺君徐海清孙明科孙化海
Owner 广东高鑫信息股份有限公司
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