Nuclear electromagnetic pulse video signal protection device

Abstract

The utility model relates to a nuclear electromagnetic pulse video signal protection device, and relates to the field of electromagnetic pulse protection devices, the nuclear electromagnetic pulse video signal protection device comprises a protection shell, a pulse protection circuit, a grounding device and a connection interface, the pulse protection circuit comprises five groups of basic protection signal lines, and the basic protection signal lines comprise three paths of signal lines; wherein the first signal line and the second signal line are connected with transient suppression protection diodes in parallel, the transient suppression protection diodes are connected with piezoresistors in series, the two piezoresistors corresponding to the first signal line and the second signal line are connected with a gas discharge tube in parallel, and the gas discharge tube is connected with a third signal line in parallel. In this way, a plurality of frequency bands can be covered in the process of protecting the video signals, and all input signals and output signals are protected.

Description

Technical Field

[0001] The present application relates to the field of electromagnetic pulse protection devices, and in particular to a nuclear electromagnetic pulse video signal protection device. Background Art

[0002] Nuclear electromagnetic pulse is a strong electromagnetic wave generated instantly by a nuclear explosion. It is very similar to natural lightning, but has a higher energy density and a wider range of influence. When a nuclear bomb with a yield of one million tons explodes at an altitude of several hundred kilometers, although the range of other killing and destructive effects on the ground is very small, the impact and harm radius of the nuclear electromagnetic pulse can reach several thousand kilometers.

[0003] Nuclear electromagnetic pulses have a wide spectrum, strong energy, and a wide range of action. The strong electromagnetic field of nuclear electromagnetic pulses can interfere with the transmission of video signals, causing signal quality degradation or interruption; the high energy of nuclear electromagnetic pulses may directly damage video signal transmission equipment, such as cameras, cables, etc. In view of the serious impact of nuclear electromagnetic pulses on video signals, it is particularly important to protect video signals. Utility Model Content

[0004] In order to improve the problem that nuclear electromagnetic pulses have a serious impact on video signals, the present application provides a nuclear electromagnetic pulse video signal protection device.

[0005] The nuclear electromagnetic pulse video signal protection device provided in this application adopts the following technical solution:

[0006] A nuclear electromagnetic pulse video signal protection device comprises a protection shell, a pulse protection circuit, a grounding device and a connection interface, wherein the pulse protection circuit comprises five groups of basic protection signal lines, and the basic protection signal lines comprise three signal lines; wherein the first signal line and the second signal line are both connected in parallel with a transient suppression protection diode, the transient suppression protection diode is connected in series with a varistor, the two varistors corresponding to the first signal line and the second signal line are connected in parallel with a gas discharge tube, and the gas discharge tube is connected in parallel with the third signal line.

[0007] In one embodiment, a decoupling resistor is provided at the input end and the output end of each signal line.

[0008] In one embodiment, the protective shell includes an outer layer and an inner layer, the outer layer is made of aluminum, and the inner layer is made of steel.

[0009] In one embodiment, the connection interface includes a VGA to DVI interface, a VGA to HDMI interface and a VGA to BNC interface.

[0010] The nuclear electromagnetic pulse video signal protection device provided by the embodiment of the present disclosure can achieve the following technical effects:

[0011] The input and output ends of each signal are equipped with positive and negative electrodes. The gas discharge tube is located between the positive and negative electrodes of the input end, which is used to discharge when the pulse voltage exceeds a certain threshold to protect the subsequent circuit; the decoupling resistor cooperates with the gas discharge tube to limit the size of the discharge current to prevent excessive current from damaging the circuit; the TVS (transient voltage suppressor) array is composed of transient suppression protection diodes to absorb and suppress transient overvoltages and protect the circuit from damage by nuclear electromagnetic pulses. In this way, multiple frequency bands can be covered in the process of protecting video signals, realizing protection of all input and output signals.

[0012] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the circuit structure of the nuclear electromagnetic pulse video signal protection device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0015] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0016] The following is combined with Figure 1 This application is described in further detail.

[0017] A nuclear electromagnetic pulse video signal protection device comprises a protection shell, a pulse protection circuit, a grounding device and a connection interface, wherein the pulse protection circuit comprises five groups of basic protection signal lines, and the basic protection signal lines comprise three signal lines; wherein the first signal line and the second signal line are both connected in parallel with a transient suppression protection diode, the transient suppression protection diode is connected in series with a varistor, the two varistors corresponding to the first signal line and the second signal line are connected in parallel with a gas discharge tube, and the gas discharge tube is connected in parallel with the third signal line.

[0018] In one embodiment, a decoupling resistor is provided at the input end and the output end of each signal line.

[0019] The input and output ends of each signal are equipped with positive and negative electrodes. The gas discharge tube is located between the positive and negative electrodes of the input end, which is used to discharge when the pulse voltage exceeds a certain threshold to protect the subsequent circuit; the decoupling resistor cooperates with the gas discharge tube to limit the size of the discharge current to prevent excessive current from damaging the circuit; the TVS (transient voltage suppressor) array is composed of transient suppression protection diodes to absorb and suppress transient overvoltages and protect the circuit from damage by nuclear electromagnetic pulses. In this way, multiple frequency bands can be covered in the process of protecting video signals, realizing protection of all input and output signals.

[0020] The pulse protection circuit has a total of fifteen signal lines, denoted as L1 to L15. The input ends of L1 to L15 are inL1 to inl15, and the output ends of L1 to L15 are outL1 to outL15. The input ends of L1 to L5 are respectively provided with decoupling resistors R1 to R5, and the input ends of L6 to L10 are respectively provided with decoupling resistors R11 to R15; the input ends of L11 to L15 are respectively provided with decoupling resistors R6 to R10. The output ends of L1 to L15 are respectively provided with decoupling resistors R16 to R30. The VGA signal is input from the input end, enters through the input end decoupling resistor, and then passes through the output end decoupling resistor and is output from the output end.

[0021] L1 is connected in parallel with transient suppression protection diode D1, which is connected in series with varistor RV1; L2 is connected in parallel with transient suppression protection diode D2, which is connected in series with varistor RV2. Varistors RV1 and RV2 are connected in parallel with gas discharge tube G1, which is connected in parallel with decoupling resistor R6 at the input end of L11.

[0022] Similarly, L3 is connected in parallel with a transient suppression protection diode D3, which is connected in series with a varistor RV3; L4 is connected in parallel with a transient suppression protection diode D4, which is connected in series with a varistor RV4. The varistor RV3 and the varistor RV4 are connected in parallel with a gas discharge tube G2, which is connected in parallel with a decoupling resistor R7 at the input end of L12.

[0023] Similarly, L5 is connected in parallel with a transient suppression protection diode D5, which is connected in series with a varistor RV5; L6 is connected in parallel with a transient suppression protection diode D6, which is connected in series with a varistor RV6. The varistor RV5 and the varistor RV6 are connected in parallel with a gas discharge tube G3, which is connected in parallel with a decoupling resistor R8 at the input end of L13.

[0024] Similarly, L7 is connected in parallel with a transient suppression protection diode D7, which is connected in series with a varistor RV7; L8 is connected in parallel with a transient suppression protection diode D8, which is connected in series with a varistor RV8. The varistor RV7 and the varistor RV8 are connected in parallel with a gas discharge tube G4, which is connected in parallel with a decoupling resistor R9 at the input end of L14.

[0025] Similarly, L9 is connected in parallel with a transient suppression protection diode D9, which is connected in series with a varistor RV9; L10 is connected in parallel with a transient suppression protection diode D10, which is connected in series with a varistor RV10. The varistor RV9 and the varistor RV10 are connected in parallel with a gas discharge tube G5, which is connected in parallel with a decoupling resistor R10 at the input end of L15.

[0026] In one embodiment, the grounding device of the device of the present application grounds the protective housing, circuit board, etc. to reduce electromagnetic interference and electromagnetic radiation, and the grounding resistance should be as small as possible to ensure a good grounding effect.

[0027] In one embodiment, the protective shell includes an outer layer and an inner layer, wherein the outer layer is made of aluminum and the inner layer is made of steel. The protective shell provides basic physical protection to prevent the external environment from directly damaging the internal circuit. On this basis, aluminum and steel have good conductor performance and pulse damage resistance.

[0028] In one embodiment, the connection interface includes a VGA to DVI interface, a VGA to HDMI interface and a VGA to BNC interface. This helps to improve the compatibility of the device, can be compatible with a variety of video signals, ensure the stable transmission of signals and reliable connection of devices.

[0029] The device of the present application not only solves the problems existing in the prior art, but also has comprehensive protection capabilities, a compact structure, and a reduced size of the device, making it easy to integrate and deploy in a communication system. It can also adapt to different battlefield environments and combat requirements, and has high adaptability and flexibility, thereby being able to better protect video signals from the effects of nuclear electromagnetic pulses and improve the stability and security of the communication system.

[0030] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A nuclear electromagnetic pulse video signal protection device, comprising a protective housing, a pulse protection circuit, a grounding device and a connection interface, characterized in that: The pulse protection circuit includes five groups of basic protection signal lines, and the basic protection signal lines include three signal lines; wherein, the first signal line and the second signal line are both connected in parallel with transient suppression protection diodes, the transient suppression protection diodes are connected in series with varistors, the two varistors corresponding to the first signal line and the second signal line are connected in parallel with gas discharge tubes, and the gas discharge tubes are connected in parallel with the third signal line.

2. The nuclear electromagnetic pulse video signal protection device according to claim 1, characterized in that: The input end and the output end of each signal line are provided with a decoupling resistor.

3. The nuclear electromagnetic pulse video signal protection device according to any one of claims 1 and 2, characterized in that: The protective shell comprises an outer layer and an inner layer, the outer layer is made of aluminum, and the inner layer is made of steel.

4. The nuclear electromagnetic pulse video signal protection device according to any one of claims 1 and 2, characterized in that: The connection interface includes a VGA to DVI interface, a VGA to HDMI interface and a VGA to BNC interface.

Images