Automobile internal space electromagnetic radiation protection method, and protection material and preparation method thereof

Abstract

The invention discloses an automobile internal space electromagnetic radiation protection method, a protection material and a preparation method thereof. The automobile internal space electromagnetic radiation protection method comprises the following steps: preparing an automobile electromagnetic radiation protection material; arranging a protection projection area by using electromagnetic radiation sources in a plurality of set frequency ranges in the automobile as projection sources, the propagation direction of electromagnetic waves emitted by the electromagnetic radiation sources as a projection direction and the local three-dimensional space where the trunk part of the body of a driver and passengers in the automobile is located as a target; and arranging one or more automobile electromagnetic radiation protection materials between the projection direction of each projection source and the protection projection area. According to the invention, through reasonable arrangement of the electromagnetic radiation protection material, a plurality of protection projection areas are formed in the local space in the automobile, so that electromagnetic radiation in a specific local space area and in a specific 0.9 MHz-1.8 GHz frequency band in the automobile is absorbed and shielded, electromagnetic radiation protection of passengers in the automobile is satisfied, and the requirements of normal communication are not influenced.

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...

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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

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