1. Introduction to the shelter tent
The electromagnetic shielding tent is primarily composed of a foldable support frame, the main body of the tent, a waveguide ventilation window, a power filter, and internal components of the tent body. The main body is made from a high-performance soft electromagnetic shielding composite fabric material developed independently; the support frame features a telescopic structure that can be quickly deployed and retracted.
The portable radiation and electromagnetic shielding tent, made from lightweight shielding materials, is primarily composed of a high-strength inflatable frame and a radiation and electromagnetic shielding canopy. The structure consists of three or more layers: the outer layer is camouflage fabric, the middle layer (one or more layers) is shielding fabric, and the inner layer is military green canvas. The tent door is connected to the main body using double-layer radiation and electromagnetic shielding hook-and-loop fasteners. Inside the tent, electronic devices can resist external electromagnetic interference without emitting any electromagnetic radiation.
2. Composition of the shelter tent
(1) Shielding material
To enhance the shielding efficiency and mechanical properties, ultra-fine metal mesh is used as the substrate, and high conductivity and high magnetic conductivity nickel, copper and iron ternary alloy is evenly coated on the metal mesh through chemical plating process, which not only ensures the high shielding efficiency in low frequency, high frequency and microwave bands, but also solves the problem that copper and iron are easy to be oxidized.
(2) Shielded housing
Apply conductive adhesive to both sides of the shielding material and use high-temperature fusion technology to cover it with a polyimide film. This process forms a well-conductive six-sided structure for the shielding shell, which boasts excellent mechanical, electrical, and chemical stability, as well as high radiation resistance, heat resistance, and cold resistance. This enhances its field applicability.
(3) Screen doors and ventilation Windows
According to the shielding mechanism of structural absorption, a multi-layer structure is designed and the thickness of each layer is determined through a large number of experiments to realize the attenuation of the incident wave layer by layer, the reflection loss at the interface and the reflection loss within the shielding layer, so that the overall shielding efficiency of the shielding door and ventilation window is as stable as that of other positions of the shielding body.
(4) Framework
The support structure features an inflatable frame made from PVC double-coated high-strength composite fabric. The canopy is a combination of PVC single-layer high-strength fabric and a high-performance electromagnetic shielding shell. This setup allows the structure to quickly deploy into a working and protective state, addressing the limitations of traditional electromagnetic protection rooms that are immobile and the inconvenience of deploying support-type shielding tents. Additionally, the design incorporates multiple air chambers to prevent the failure of individual air columns from affecting the overall functionality.
(5) Power supply and communication interface processing
The cables entering and leaving the shielding tent are filtered, and the cutoff waveguide is used to prevent the cables from directly passing through the shielding body and affecting the overall shielding efficiency.
3. Main functions
(1) It can effectively prevent electronic information leakage, electromagnetic interference and electromagnetic radiation, as well as a far-infrared thermal imaging function.
(2) It has a good thermal insulation function, can prevent wind and rain, ultraviolet rays, snow disaster and electronic pulse, and can be used indoors or outdoors.
(3) According to customer requirements and shielding efficiency requirements, the product can be configured with different functions of filters, to facilitate contact with the outside world and achieve the effect of shielding.
(4) The product has the advantages of folding resistance, light weight, easy to carry and simple operation. The shielding performance of the tent is not attenuated after multiple times of folding and storage, and it can be unfolded and withdrawn quickly and conveniently at the same time. It is the most suitable high-tech anti-leakage product for related units to hold temporary confidential offices or hold confidential meetings, as well as for military field exercises and combat.
4. Main features
(1) Lightweight, rainproof, sunproof, flame retardant.
(2) Safe and reliable, inflatable self-contained, easy to install, disassemble and carry.
(3) It can effectively suppress the electromagnetic leakage of electronic equipment, protect information security, and enhance the ability of electronic equipment to resist electromagnetic interference and electronic warfare attacks.
(4) The unfolding and retracting are fast and convenient, and the operation is simple. It only takes 3-5 minutes for a single person to complete the unfolding of the whole tent.
(5) Good compatibility, to meet the needs of a variety of environments. Suitable for field wind, rain, snow, heat, cold and other environmental conditions.
5. Classification of shelter tents
(1) On-site shielding cover
① Shield signals of about 500K-1MHz.
② The shield is light and can be folded for storage.
③ One end of the shielding cover can be removed using bonding, and the bonding place should ensure the shielding effect.
④ The shielding part is about 6.5m² in size.
⑤ The internal skeleton is made of non-magnetic materials such as stainless steel or aluminum.
(2) Laboratory shielding hood
① Signal shielding is required for approximately 500K-1MHz.
② The shield is light and can be folded for storage.
③ One end of the shielding cover can be removed through bonding, and the bonding place should ensure the shielding effect.
④ The amount of the shielding part is about 25.5m².
⑤ The internal skeleton is made of non-magnetic materials such as stainless steel or aluminum.
(3) Single-person electromagnetic shielding tent
The single-person electromagnetic shielding tent is primarily composed of a foldable support frame, the tent body, waveguide ventilation windows, power filters, and internal components. The tent body is crafted from a high-performance soft electromagnetic shielding composite fabric material developed in-house; the support frame features a telescopic structure that can be quickly deployed and retracted. Suitable for electromagnetic safety protection of equipment used in communication, business secrets, testing departments and geological exploration and other outdoor operations.
