CN220368469U - Electromagnetic pulse protection device for signal port of interference signal detection equipment - Google Patents
Electromagnetic pulse protection device for signal port of interference signal detection equipment Download PDFInfo
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- CN220368469U CN220368469U CN202321379228.7U CN202321379228U CN220368469U CN 220368469 U CN220368469 U CN 220368469U CN 202321379228 U CN202321379228 U CN 202321379228U CN 220368469 U CN220368469 U CN 220368469U
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Abstract
The application relates to an electromagnetic pulse protection device of interference signal check out test set signal port is applicable to the positive and negative poles of electricity connection at signal port, its characterized in that includes: the electromagnetic protection module, the first filter and the second filter. The electromagnetic protection module, the first filter and the second filter are sequentially connected in series with the positive stage and the negative stage of the signal port, the electromagnetic protection module can be utilized to effectively discharge high-power electromagnetic pulse, and then the cascading filter is utilized to filter the discharged signal, namely, the mode of combining the protection device and the multistage filter is adopted, so that the intensity of the high-power electromagnetic pulse is greatly reduced, and further, the damage or interference of the high-power electromagnetic pulse to related equipment is avoided.
Description
Technical Field
The application relates to the technical field of electromagnetic pulse protection, in particular to a strong electromagnetic pulse protection device for a signal port of interference signal detection equipment.
Background
The International electrotechnical Commission specifies that electromagnetic environments with incident electric fields exceeding 100V/m are referred to as high power electromagnetic environments. If the peak power exceeds 100MW, the electromagnetic wave generated by the electromagnetic wave generator is a high-power electromagnetic pulse. The high-power electromagnetic pulse has the greatest characteristics of quick rise time and high strength. The rising front time of a typical high-power electromagnetic pulse is about 10ns, the pulse width is 500ns, the peak field intensity can reach 50kV/m, and the high-power electromagnetic pulse is a high-strength electromagnetic interference source, and is tens to hundreds of decibels higher than the common electromagnetic interference intensity.
Electromagnetic energy of high-power electromagnetic pulse can enter electronic and electric equipment through an antenna, a power line, a metal wire of an integrated circuit board and the like, and damage the electronic and electric equipment through high-voltage breakdown, thermal effect and the like, so that the equipment and the system are damaged temporarily or permanently. Moreover, the strong magnetic field can rewrite and destroy the database equipment with the magnetic medium, and interfere the equipment such as radar, communication and the like, so that the radar is lost and the communication is interrupted.
In the field of lightning protection, a common protection device is a surge protector. However, in the case of very complex electromagnetic environments in the field, the device interface is often destroyed by high-power electromagnetic pulses during signal transmission, resulting in interruption of communication, due to the long communication distance of the cable. Because the high-power electromagnetic pulse has the characteristics of quick response time and high pulse power, the conventional surge protector cannot meet the protection capability required in a complex electromagnetic environment. Therefore, there is a need to develop a device that can protect against high power electromagnetic pulses to reduce damage or interference of the high power electromagnetic pulses to the associated equipment.
Disclosure of Invention
In view of this, the present application proposes a strong electromagnetic pulse protection device for a signal port of an interference signal detection device, so as to reduce damage or interference caused by high-power electromagnetic pulses to related devices.
According to an aspect of the present application, there is provided a strong electromagnetic pulse protection device for a signal port of an interference signal detection apparatus, including: be applicable to the electricity and connect the positive and negative poles at signal port, its characterized in that includes: the electromagnetic protection module, the first filter and the second filter; the electromagnetic protection module, the first filter and the second filter are sequentially connected in series; the electromagnetic protection module is suitable for being electrically connected with the positive electrode of the signal port, is connected with the ground wire and discharges high-power electromagnetic pulse; the first filter filters the signal discharged by the electromagnetic protection module to filter the interference signal doped in the high-power electromagnetic pulse; the second filter is suitable for electrically connecting the cathode of the signal port, filtering the signal filtered by the first filter, and filtering parasitic coupling signals in the signal filtered by the first filter.
In one possible implementation, the circuit further includes a first input signal line and a second input signal line;
the electromagnetic protection module, the first filter and the second filter are connected with the positive electrode and the negative electrode of the signal port through the first input signal line and the second input signal line.
In one possible implementation, the electromagnetic protection module includes: a gas discharge tube;
the gas discharge tube is arranged between the first input signal line and the second input signal line; and is also provided with
The gas discharge tube is connected with a ground wire.
In one possible implementation, the electromagnetic protection module further includes: the first transient voltage suppression diode, the second transient voltage suppression diode, the third transient voltage suppression diode and the fourth transient voltage suppression diode, and the first decoupling resistor, the second decoupling resistor, the third decoupling resistor and the fourth decoupling resistor;
the first transient voltage suppression diode is connected between the first input signal line and a ground line;
the second transient voltage suppression diode is connected between the second input signal line and ground;
the third transient voltage suppression diode is connected between the first input signal line and ground;
the fourth transient voltage suppression diode is connected between the second input signal line and ground;
the first decoupling resistor is connected between the gas discharge tube and the first transient voltage suppression diode and is positioned on the first input signal line;
the second decoupling resistor is connected between the gas discharge tube and the second transient voltage suppression diode and is positioned on the second input signal line
The third decoupling resistor is connected between the first transient voltage suppression diode and the third transient voltage suppression diode and is positioned on the first input signal line
The first decoupling resistor is connected between the second transient voltage suppression diode and the fourth transient voltage suppression diode and is located on the second input signal line.
In one possible implementation, the first transient voltage suppression diode, the second transient voltage suppression diode, the third transient voltage suppression diode, and the fourth transient voltage suppression diode are transient voltage suppression diodes that have nanosecond response times.
In one possible implementation, the first filter includes: the first inductor, the second inductor, the first capacitor and the second capacitor;
the first inductor is arranged on the first input signal line;
the second inductor is arranged on the second input signal line;
the first capacitor is arranged between the first input signal line and the ground line;
the second capacitor is disposed between the second input signal line and the ground line.
In one possible implementation, the second filter includes: the third inductor, the fourth inductor, the third capacitor and the fourth capacitor;
the third inductor is arranged on the first input signal line;
the fourth inductor is arranged on the second input signal line;
the third capacitor is arranged between the first input signal line and the ground line;
the fourth capacitor is disposed between the second input signal line and the ground line.
In one possible implementation, the second filter further includes: a first decoupling resistor and a second decoupling resistor;
the first decoupling resistor is arranged between the first input signal line and the ground line;
the second decoupling resistor is disposed between the second input signal line and the ground line.
The electromagnetic pulse protection device for the signal port of the interference signal detection equipment has the beneficial effects that: when the signal filtering device is impacted by high-power electromagnetic pulse, the gas discharge tube can effectively discharge the high-power electromagnetic pulse, the decoupling resistor can effectively eliminate parasitic coupling between circuits so as to ensure normal operation of the circuits, the transient voltage suppression diode can rapidly start to rapidly clamp the high-power electromagnetic pulse and transmit the high-power electromagnetic pulse to the front-end large-current gas discharge tube for discharging, the electromagnetic protection module can effectively discharge the high-power electromagnetic pulse, and then the cascade filter is used for filtering the discharged signal, namely, the protection device and the multistage filter are combined, so that the intensity of the high-power electromagnetic pulse is greatly reduced, and the damage or interference of the high-power electromagnetic pulse to a signal port is avoided.
Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features and aspects of the present application and together with the description, serve to explain the principles of the present application.
Fig. 1 shows a block diagram of an electromagnetic pulse protection device of a signal port of an interference signal detection apparatus according to an embodiment of the present application;
fig. 2 is a circuit schematic diagram showing a main structure of an electromagnetic pulse protection device of a signal port of an interference signal detection apparatus according to an embodiment of the present application.
Detailed Description
Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
It should be understood, however, that the terms "center," "longitudinal," "transverse," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the utility model or simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may explicitly or implicitly include one or more such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
In addition, numerous specific details are set forth in the following detailed description in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements, and circuits have not been described in detail as not to unnecessarily obscure the present application.
Fig. 1 shows a block diagram of an electromagnetic pulse protection device of a signal port of an interference signal detection apparatus according to an embodiment of the present application; fig. 2 is a circuit schematic diagram showing a main structure of an electromagnetic pulse protection device of a signal port of an interference signal detection apparatus according to an embodiment of the present application. As shown in fig. 1 and 2, an electromagnetic pulse protection device for a signal port of an interference signal detection apparatus according to an embodiment of the present application includes: an electromagnetic protection module 210, a first filter 220, and a second filter 230. The electromagnetic protection module 210, the first filter 220 and the second filter 230 are sequentially connected in series, and the electromagnetic protection module 210 is electrically connected with the positive electrode of the signal port 100 of the interference signal detection device, and the second filter 230 is electrically connected with the negative electrode of the signal port 100 of the interference signal detection device, so that damage or interference of high-power electromagnetic pulse to related devices is avoided. The electromagnetic protection module 210 is connected with the ground, and can discharge high-power electromagnetic pulse, the first filter 220 is connected in series behind the electromagnetic protection module 210, and is used for filtering signals discharged by the electromagnetic protection module 210, and the second filter is connected in series behind the first filter 220, and is used for filtering signals filtered by the first filter 220, and filtering parasitic coupling signals.
Specifically, when the signal filtering device is impacted by the high-power electromagnetic pulse, the gas discharge tube 211 can effectively discharge the high-power electromagnetic pulse, the decoupling resistor can effectively eliminate parasitic coupling between circuits so as to ensure that the circuits work normally, and the transient voltage suppression diode can be quickly started to clamp the high-power electromagnetic pulse and transmit the high-power electromagnetic pulse to the front-end large-current gas discharge tube 211 for discharging. It can be seen that the electromagnetic protection module 210 can effectively discharge the high-power electromagnetic pulse, and then the cascaded filter is used to filter the discharged signal, that is, the protection device and the multistage filter are combined, so that the intensity of the high-power electromagnetic pulse is greatly reduced, and further the damage or interference of the high-power electromagnetic pulse to related equipment is avoided.
In one embodiment, the electromagnetic pulse protection device includes a first input signal line 310 and a second input signal line 320. The electromagnetic pulse module, the first filter 220 and the second filter 230 pass through the first input signal line 310 and have the input signal line disposed in both positive and negative stages of the signal port 100.
In one embodiment, the electromagnetic protection module 210 includes: a gas discharge tube 211. The gas discharge tube 211 is connected between the first input signal line 310 and the second input signal line 320, and the gas discharge tube 211 is connected to the ground, so that the electromagnetic pulse with high power can be effectively discharged.
In this particular embodiment, the electromagnetic shield module 210 further includes: a first transient voltage suppression diode 216, a second transient voltage suppression diode 217, a third transient voltage suppression diode 218, and a fourth transient voltage suppression diode 219, and a first decoupling resistor 212, a second decoupling resistor 213, a third decoupling resistor 214, and a fourth decoupling resistor 215. Specifically, the first transient voltage suppression diode 216 is connected between the first input signal line 310 and the ground, the second transient voltage suppression diode 217 is connected between the second input signal line 320 and the ground, the third transient voltage suppression diode 218 is connected between the first input signal line 310 and the ground, the fourth transient voltage suppression diode 219 is connected between the second input signal line 320 and the ground, the first decoupling resistor 212 is connected between the gas discharge tube 211 and the first transient voltage suppression diode 216 and is located on the first input signal line 310, the second decoupling resistor 213 is connected between the gas discharge tube 211 and the second transient voltage suppression diode 217 and is located on the second input signal line 320, the third decoupling resistor 214 is connected between the first transient voltage suppression diode 216 and the third transient voltage suppression diode 218 and is located on the first input signal line 310, the first decoupling resistor 212 is connected between the second transient voltage suppression diode 217 and the fourth transient voltage suppression diode 219 and is located on the second input signal line 320.
Specifically, the transient voltage suppression diode is used as a high-efficiency protection device, and can be started quickly to clamp the high-power electromagnetic pulse quickly and transmit the high-power electromagnetic pulse to the gas discharge tube 211 at the front end for discharging. The decoupling resistor can effectively eliminate parasitic coupling between the circuits so as to ensure the normal operation of the circuits. In this way, the combination of the gas discharge tube 211, the transient voltage suppression diode and the decoupling resistor is included to discharge the high-power electromagnetic pulse, so that the damage or interference of the high-power electromagnetic pulse to the signal port 100 is avoided.
In this particular embodiment, the first transient voltage suppression diode 216, the second transient voltage suppression diode 217, the third transient voltage suppression diode 218, and the fourth transient voltage suppression diode 219 are transient voltage suppression diodes having nanosecond response times. Thus, the transient voltage suppression diode with nanosecond response time has the advantages of fast response and short starting time, and the reaction speeds of the first transient voltage suppression diode 216, the second transient voltage suppression diode 217, the third transient voltage suppression diode 218 and the fourth transient suppression diode are improved.
In an embodiment, the first filter 220 is configured to filter the signal released by the electromagnetic protection module 210 to remove the interference signal doped in the high-power electromagnetic pulse, and the first filter 220 includes: a first inductor 221, a second inductor 222, a first capacitor 223 and a second capacitor 224. The first inductor 221 is disposed on the first input signal line 310, the second inductor 222 is disposed on the second input signal line 320, the first capacitor 223 is disposed between the first input signal line 310 and the ground, and the second capacitor 224 is disposed between the second input signal line 320 and the ground.
In this embodiment, the inductor has the effect of suppressing electromagnetic interference. Specifically, the filtering process of the first filter 220 for filtering the interference signal is actually a process that the first inductor 221 and the second inductor 222 of the first filter 220 absorb the interference signal and convert the interference signal into magnetic induction and thermal energy, and the first capacitor 223 and the second capacitor 224 of the first filter 220 bypass the interference signal remaining after the absorption to the ground.
In one embodiment, the second filter 230 includes: third inductor 231, fourth inductor 232, third capacitor 233, and fourth capacitor 234. The third inductor 231 is disposed on the first input signal line 310, the fourth inductor 231 is disposed on the second input signal line 320, the third capacitor 233 is disposed between the first input signal line 310 and the ground, and the fourth capacitor 233 is disposed between the second input signal line 320 and the ground.
Further, in this particular embodiment, the second filter 230 further includes: a first decoupling resistor 235 and a second decoupling resistor 236. The first decoupling resistor 235 is disposed between the first input signal line 310 and ground, and the second decoupling resistor 236 is disposed between the second input signal line 320 and ground.
Specifically, in this embodiment, the second filter 230 further filters the signal filtered by the second filter 230 through a combination of capacitance, inductance and resistance, and eliminates parasitic coupling between circuits, so as to ensure that the subsequent device has a smaller input current when operating normally.
In summary, the electromagnetic anti-skid module is configured to drain the high-power electromagnetic pulse, the first filter 220 is configured to filter the signal drained by the electromagnetic protection module 210, filter the interference signal doped in the high-power electromagnetic pulse, and the second filter 230 is configured to filter the signal filtered by the first filter 220, and filter the parasitic coupling signal in the signal filtered by the first filter 220. In addition, the two-stage filter is adopted to filter the released signals, so that the high-power electromagnetic pulse is greatly attenuated, and the doped interference signals, signals outside a preset wave band and parasitic coupling signals are filtered, so that the finally filtered signals can meet the requirement of normal operation. Thus, through the cooperation of the electromagnetic protection module 210, the first filter 220 and the second filter 230, the signal port 100 can avoid the interference or damage of high-power electromagnetic pulse.
The embodiments of the present application have been described above, the foregoing description is exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (8)
1. An electromagnetic pulse protection device for a signal port of an interference signal detection device, which is suitable for being electrically connected with a positive electrode and a negative electrode of the signal port, and is characterized by comprising:
the electromagnetic protection module, the first filter and the second filter;
the electromagnetic protection module, the first filter and the second filter are sequentially connected in series;
the electromagnetic protection module is suitable for being electrically connected with the positive electrode of the signal port, is connected with the ground wire and discharges high-power electromagnetic pulse; the first filter filters the signal discharged by the electromagnetic protection module to filter the interference signal doped in the high-power electromagnetic pulse; the second filter is suitable for electrically connecting the cathode of the signal port, filtering the signal filtered by the first filter, and filtering parasitic coupling signals in the signal filtered by the first filter.
2. The electromagnetic pulse protection apparatus for a signal port of an interfering signal detection device of claim 1, further comprising a first input signal line and a second input signal line;
the electromagnetic protection module, the first filter and the second filter are connected with the positive electrode and the negative electrode of the signal port through the first input signal line and the second input signal line.
3. The electromagnetic pulse protection device for a signal port of an interfering signal detection apparatus of claim 2, wherein the electromagnetic protection module comprises: a gas discharge tube;
the gas discharge tube is arranged between the first input signal line and the second input signal line; and the gas discharge tube is connected with a ground wire.
4. The electromagnetic pulse protection device for a signal port of an interfering signal detection apparatus of claim 3, wherein the electromagnetic protection module further comprises: the first transient voltage suppression diode, the second transient voltage suppression diode, the third transient voltage suppression diode and the fourth transient voltage suppression diode, and the first decoupling resistor, the second decoupling resistor, the third decoupling resistor and the fourth decoupling resistor;
the first transient voltage suppression diode is connected between the first input signal line and a ground line;
the second transient voltage suppression diode is connected between the second input signal line and ground;
the third transient voltage suppression diode is connected between the first input signal line and ground;
the fourth transient voltage suppression diode is connected between the second input signal line and ground;
the first decoupling resistor is connected between the gas discharge tube and the first transient voltage suppression diode and is positioned on the first input signal line;
the second decoupling resistor is connected between the gas discharge tube and the second transient voltage suppression diode and is positioned on the second input signal line;
the third decoupling resistor is connected between the first transient voltage suppression diode and the third transient voltage suppression diode and is positioned on the first input signal line;
the first decoupling resistor is connected between the second transient voltage suppression diode and the fourth transient voltage suppression diode and is located on the second input signal line.
5. The electromagnetic pulse protection device of claim 4, wherein the first transient voltage suppression diode, the second transient voltage suppression diode, the third transient voltage suppression diode, and the fourth transient voltage suppression diode are transient voltage suppression diodes having nanosecond response times.
6. The electromagnetic pulse protection apparatus for a signal port of an interfering signal detection device of claim 2, wherein the first filter comprises: the first inductor, the second inductor, the first capacitor and the second capacitor;
the first inductor is arranged on the first input signal line;
the second inductor is arranged on the second input signal line;
the first capacitor is arranged between the first input signal line and the ground line;
the second capacitor is disposed between the second input signal line and the ground line.
7. The electromagnetic pulse protection apparatus for a signal port of an interfering signal detection device of claim 2, wherein the first filter comprises: the third inductor, the fourth inductor, the third capacitor and the fourth capacitor;
the third inductor is arranged on the first input signal line;
the fourth inductor is arranged on the second input signal line;
the third capacitor is arranged between the first input signal line and the ground line;
the third capacitor is disposed between the second input signal line and the ground line.
8. The electromagnetic pulse protection apparatus for a signal port of an interfering signal detection apparatus of claim 7, wherein the second filter further comprises: a first decoupling resistor and a second decoupling resistor;
the first decoupling resistor is arranged between the first input signal line and the ground line;
the second decoupling resistor is disposed between the second input signal line and the ground line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321379228.7U CN220368469U (en) | 2023-06-01 | 2023-06-01 | Electromagnetic pulse protection device for signal port of interference signal detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321379228.7U CN220368469U (en) | 2023-06-01 | 2023-06-01 | Electromagnetic pulse protection device for signal port of interference signal detection equipment |
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| Publication Number | Publication Date |
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| CN220368469U true CN220368469U (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321379228.7U Active CN220368469U (en) | 2023-06-01 | 2023-06-01 | Electromagnetic pulse protection device for signal port of interference signal detection equipment |
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