CN217159270U - Novel ship-borne multistage electromagnetic pulse protection filter - Google Patents
Novel ship-borne multistage electromagnetic pulse protection filter Download PDFInfo
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- CN217159270U CN217159270U CN202220390471.8U CN202220390471U CN217159270U CN 217159270 U CN217159270 U CN 217159270U CN 202220390471 U CN202220390471 U CN 202220390471U CN 217159270 U CN217159270 U CN 217159270U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a novel ship-borne multistage electromagnetic pulse protection filter, which is configured with a first-stage protection circuit, a decoupling circuit and a second-stage protection circuit; the voltage limiting of the first-stage protection circuit is higher than that of the second-stage protection circuit, the first-stage protection circuit is not started when electromagnetic pulse and lightning surge initially enter the filter through a cable, and the second-stage protection circuit is started to discharge surge voltage and current; when the electromagnetic pulse and the lightning surge reach the starting condition of the first-stage protection circuit, the first-stage protection circuit starts to discharge large current, and the protection effect on the electromagnetic pulse and the lightning surge is achieved. The filter finally plays a role in protecting electromagnetic pulse and lightning surge, and interference suppression on the electromagnetic pulse is realized.
Description
Technical Field
The utility model relates to a novel multistage electromagnetic pulse of carrier-borne protects wave filter.
Background
The ship-borne equipment is supplied with power by alternating current, and the voltage provided by an ideal ship power grid system is a single fixed frequency and a fixed voltage amplitude. The generation of electromagnetic pulse current and electromagnetic pulse voltage pollutes the power grid system of the whole ship, deteriorates the power utilization environment of ship-borne equipment, and also has serious influence on the peripheral communication system. In the prior art, the input end of the carrier-borne electric equipment is generally provided with a conventional filter for filtering high-frequency interference, but the electromagnetic pulse interference is not inhibited.
SUMMERY OF THE UTILITY MODEL
For overcoming the technical problem that prior art exists, the utility model aims to provide a novel multistage electromagnetic pulse of carrier-borne protects wave filter here, this wave filter can realize the electromagnetic pulse interference suppression.
Therefore, the utility model provides a novel multistage electromagnetic pulse of carrier-borne protects wave filter is configured:
the first-stage protection circuit comprises a voltage limiting device for limiting voltage and a first device;
the decoupling circuit comprises a second device, is used for dragging the rising edge of surge voltage and current under the combined action with the first device when electromagnetic pulse and lightning surge enter the initial state so as to ensure that the first-stage protection circuit is not started, and is used for decoupling when the electromagnetic pulse and the lightning surge reach the starting condition of the first-stage protection circuit so as to ensure that the first-stage protection circuit is started; and
the second-stage protection circuit comprises a voltage limiting device for limiting voltage;
the voltage limiting of the first-stage protection circuit is higher than that of the second-stage protection circuit; when electromagnetic pulse and lightning surge initially enter the filter through a cable, the first-stage protection circuit is not started, and the second-stage protection circuit is started to discharge surge voltage and current; when the electromagnetic pulse and the lightning surge reach the starting condition of the first-stage protection circuit, the first-stage protection circuit starts to discharge large current, and the protection effect on the electromagnetic pulse and the lightning surge is achieved.
In some embodiments, the filter provided by the present invention further comprises a filter circuit for filtering a signal passing through the second stage protection circuit, wherein the filter circuit comprises an inductor L3, an inductor L4, and a capacitor C4 connected in series between the input end of the inductor L3 and the input end of the inductor L4.
In some embodiments, the filter provided by the present invention further comprises a feed-through filter circuit disposed at the rear stage of the filter circuit, for isolating the input and output end couplings of the filter while suppressing the interference of the high frequency harmonic to the signal and the power line; the filter circuit includes a capacitor C5 and a capacitor C6.
The utility model provides another kind of structure of wave filter is configured with:
a connector for connection;
the first-stage protection circuit comprises a voltage limiting device for limiting voltage and a first device;
the decoupling circuit comprises a second device, is used for dragging the rising edge of surge voltage and current under the combined action with the first device when electromagnetic pulse and lightning surge enter the initial state so as to ensure that the first-stage protection circuit is not started, and is used for decoupling when the electromagnetic pulse and the lightning surge reach the starting condition of the first-stage protection circuit so as to ensure that the first-stage protection circuit is started;
the second-stage protection circuit comprises a voltage limiting device for limiting voltage;
the filter circuit is used for filtering the signals passing through the second-stage protection circuit; and
the feed-through filter circuit is used for inhibiting the interference of high-frequency harmonic waves to signals and power lines and simultaneously isolating the coupling of the input end and the output end of the filter;
the voltage limiting of the first-stage protection circuit is higher than that of the second-stage protection circuit; when electromagnetic pulse and lightning surge enter the filter through a cable, the first-stage protection circuit is not started, and the second-stage protection circuit is started to discharge surge voltage and current; when the electromagnetic pulse and the lightning surge reach the starting condition of the first-stage protection circuit, the first-stage protection circuit starts to discharge large current, and the protection effect on the electromagnetic pulse and the lightning surge is achieved.
The utility model has the advantages that: the first-stage protection circuit, the decoupling circuit and the second-stage protection circuit which are configured by the filter are matched, when electromagnetic pulse and lightning surge initially enter the filter through a cable, the second-stage protection circuit is started to discharge, when the electromagnetic pulse and the lightning surge reach the starting condition of the first-stage protection circuit, the first-stage protection circuit is started to discharge heavy current, and finally the protection effect on the electromagnetic pulse and the lightning surge is achieved, so that the interference suppression on the electromagnetic pulse is realized.
The configuration of the filter circuit and the feed-through filter circuit improves the high-frequency filtering effect of the filter.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 is a schematic block diagram of a filter provided by the present invention;
fig. 2 is a schematic circuit diagram of the filter provided by the present invention;
fig. 3-8 are a front view, a left side view, a right side view, a top view, a bottom view and a back view of the filter product according to the present invention;
in the figure, 1-filter housing, 2-connector JP, 3-output.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art.
The utility model provides a for the realization is to electromagnetic pulse interference suppression, a novel multistage electromagnetic pulse protection wave filter of carrier-borne is provided. The filter can be used for shipborne electric equipment to realize electromagnetic pulse interference suppression.
Referring to fig. 1 and 2, the filter mainly includes:
the first-stage protection circuit comprises a voltage limiting device for limiting voltage and a first device; the voltage limiting device comprises a voltage limiting resistor R1, a voltage limiting resistor R2, a capacitor C1, a capacitor C2 and a capacitor C3, wherein the voltage limiting device comprises a voltage limiting resistor R1 and a voltage limiting resistor R2; one end of the piezoresistor R1 is used as a first input end, the other end of the piezoresistor R1 is connected with the circuit ground, one end of the piezoresistor R2 is used as a second input end, and the other end of the piezoresistor R2 is connected with the circuit ground; the capacitor C1 is connected in series between the first input end and the second input end, the capacitor C2 is connected in series between the first input end and the circuit ground, and the capacitor C3 is connected in series between the second input end and the circuit ground; voltage limiting piezoresistors are used as main elements for electromagnetic pulse protection and lightning protection;
the decoupling circuit comprises a second device, wherein the second device mainly comprises an inductor L1 and an inductor L2; and
the second-stage protection circuit comprises a voltage limiting device for limiting voltage, the voltage limiting device mainly comprises a voltage dependent resistor R3 and a voltage dependent resistor R4, one end of the voltage dependent resistor R3 is used as an input end A, the other end of the voltage dependent resistor R3 is connected with a circuit ground, one end of the voltage dependent resistor R4 is used as an input end B, and the other end of the voltage dependent resistor R4 is connected with the circuit ground.
The voltage limiting of the first-stage protection circuit is higher than that of the second-stage protection circuit; when electromagnetic pulse and lightning surge initially enter the filter through a cable, the front edge of the surge voltage and current smoothly pass through the first-stage protection circuit due to the reasons that the reaction time is slow, the voltage-dependent voltage is higher than that of the second-stage protection circuit and the like, so that the front edge of the surge voltage and the current reaches capacitors C1, C2 and C3, inductors L1 and L2, and at the moment, the circuit utilizes the principle that the current and the voltage at the two ends of the inductors and the capacitors can not change suddenly to drag and relieve the rising edges of the surge voltage and the current, so that the second-stage protection circuit can be effectively started to discharge when the surge voltage and the current pass through; when the voltage in the circuit is continuously increased to the voltage-sensitive voltage of the first-stage protection, the inductors of the L1 and the L2 are decoupled to drive the first-stage protection circuit to discharge large current, and finally the protection effect on electromagnetic pulse and lightning surge is achieved.
Here, the second stage protection circuit of the filter further includes a voltage protector R5 connected in series between the input terminal a and the input terminal B and/or a metal film resistor R6 connected in series between the input terminal a and the input terminal B.
The utility model provides a filter still includes one or more combination of following functional circuit on the basis of above functional circuit:
the connector JP is used for connecting with an electric device, and may be an aerial plug for connecting with a ship-based electric device.
The filter circuit is used for filtering the signal passing through the second-stage protection circuit; the filter circuit mainly comprises an inductor L3, an inductor L4 and a capacitor C4 which is connected in series between the input end of the inductor L3 and the input end of the inductor L4.
The feed-through filter circuit is used for inhibiting interference of high-frequency harmonic waves to signals and power lines and simultaneously isolating input end coupling and output end coupling of the filter, and comprises a capacitor C5 and a capacitor C6.
The voltage limiting device mentioned herein may be a gas discharge tube, a transient voltage suppression diode or other voltage limiting device, in addition to a varistor.
Referring to fig. 3 to 8, the filter provided herein is configured with a filter housing 1, functional circuits are distributed in the filter housing 1, and a connector JP2 and an output terminal 3 are configured on a side wall of the filter housing 1 so as to be connected to an electric device.
The present disclosure has been described in terms of the above-described embodiments, which are merely exemplary of the implementations of the present disclosure. It must be noted that the disclosed embodiments do not limit the scope of the disclosure. Rather, variations and modifications are possible within the spirit and scope of the disclosure, and these are all within the scope of the disclosure.
Claims (10)
1. A novel shipboard multistage electromagnetic pulse protection filter, characterized in that the filter is configured with:
the first-stage protection circuit comprises a voltage limiting device for limiting voltage and a first device;
the decoupling circuit comprises a second device, is used for dragging the rising edge of surge voltage and current under the combined action with the first device when electromagnetic pulse and lightning surge enter the initial state so as to ensure that the first-stage protection circuit is not started, and is used for decoupling when the electromagnetic pulse and the lightning surge reach the starting condition of the first-stage protection circuit so as to ensure that the first-stage protection circuit is started; and
the second-stage protection circuit comprises a voltage limiting device for limiting voltage;
the voltage limiting of the first-stage protection circuit is higher than that of the second-stage protection circuit; when electromagnetic pulse and lightning surge initially enter the filter through a cable, the first-stage protection circuit is not started, and the second-stage protection circuit is started to discharge surge voltage and current; when the electromagnetic pulse and the lightning surge reach the starting condition of the first-stage protection circuit, the first-stage protection circuit starts to discharge large current, and the protection effect on the electromagnetic pulse and the lightning surge is achieved.
2. The novel shipboard multistage electromagnetic pulse protection filter of claim 1, wherein the first stage protection circuit comprises a voltage-limiting device selected from the group consisting of a voltage-limiting resistor R1, a voltage-limiting resistor R2, a first device selected from the group consisting of a capacitor C1, a capacitor C2, and a capacitor C3; one end of the piezoresistor R1 is used as a first input end, the other end of the piezoresistor R1 is connected with a circuit ground, one end of the piezoresistor R2 is used as a second input end, and the other end of the piezoresistor R2 is connected with the circuit ground; the capacitor C1 is connected in series between the first input terminal and the second input terminal, the capacitor C2 is connected in series between the first input terminal and circuit ground, and the capacitor C3 is connected in series between the second input terminal and circuit ground.
3. The novel shipboard multistage electromagnetic pulse protection filter according to claim 1, wherein the second-stage protection circuit comprises a voltage dependent resistor R3 and a voltage dependent resistor R4 as voltage limiting devices, one end of the voltage dependent resistor R3 serves as an input terminal a, the other end of the voltage dependent resistor R3 is connected to a circuit ground, and one end of the voltage dependent resistor R4 serves as an input terminal B, and the other end of the voltage dependent resistor R4 is connected to the circuit ground.
4. The novel shipboard multistage electromagnetic pulse protection filter of claim 3, wherein the second stage protection circuit further comprises a voltage protector R5 connected in series between the input terminal A and the input terminal B.
5. The novel shipboard multistage electromagnetic pulse protection filter of claim 3 or 4, wherein the second stage protection circuit further comprises a resistor R6 connected in series between the input terminal A and the input terminal B.
6. The novel shipboard multistage electromagnetic pulse protection filter of claim 1, further comprising a filter circuit for filtering a signal passing through the second stage protection circuit, wherein the filter circuit comprises an inductor L3, an inductor L4, and a capacitor C4 connected in series between an input end of the inductor L3 and an input end of the inductor L4.
7. The novel shipboard multistage electromagnetic pulse protection filter of claim 6, further comprising a feed-through filter circuit configured at a rear stage of the filter circuit, and configured to isolate input and output end couplings of the filter while suppressing interference of high-frequency harmonics to signals and power lines; the feedthrough filter circuit includes a capacitor C5 and a capacitor C6.
8. A novel shipboard multistage electromagnetic pulse protection filter, characterized in that the filter is configured with: a connector for connection;
the first-stage protection circuit comprises a voltage limiting device for limiting voltage and a first device;
the decoupling circuit comprises a second device, is used for dragging the rising edge of surge voltage and current under the combined action with the first device when electromagnetic pulse and lightning surge enter the initial state so as to ensure that the first-stage protection circuit is not started, and is used for decoupling when the electromagnetic pulse and the lightning surge reach the starting condition of the first-stage protection circuit so as to ensure that the first-stage protection circuit is started;
the second-stage protection circuit comprises a voltage limiting device for limiting voltage;
the filter circuit is used for filtering the signals passing through the second-stage protection circuit; and
the feed-through filter circuit is used for inhibiting the interference of high-frequency harmonic waves to signals and power lines and simultaneously isolating the coupling of the input end and the output end of the filter;
the voltage limiting of the first-stage protection circuit is higher than that of the second-stage protection circuit; when electromagnetic pulse and lightning surge enter the filter through a cable, the first-stage protection circuit is not started, and the second-stage protection circuit is started to discharge surge voltage and current; when the electromagnetic pulse and the lightning surge reach the starting condition of the first-stage protection circuit, the first-stage protection circuit starts to discharge large current, and the protection effect on the electromagnetic pulse and the lightning surge is achieved.
9. The novel shipboard multistage electromagnetic pulse protection filter of claim 8, wherein the first stage protection circuit comprises a voltage-limiting device selected from the group consisting of a voltage-limiting resistor R1, a voltage-limiting resistor R2, a first device selected from the group consisting of a capacitor C1, a capacitor C2, and a capacitor C3; one end of the piezoresistor R1 is used as a first input end, the other end of the piezoresistor R1 is connected with a circuit ground, one end of the piezoresistor R2 is used as a second input end, and the other end of the piezoresistor R2 is connected with the circuit ground; the capacitor C1 is connected in series between the first input terminal and the second input terminal, the capacitor C2 is connected in series between the first input terminal and circuit ground, and the capacitor C3 is connected in series between the second input terminal and circuit ground.
10. The novel shipboard multistage electromagnetic pulse protection filter of claim 8, wherein the second-stage protection circuit comprises a voltage dependent resistor R3 and a voltage dependent resistor R4 as voltage limiting devices, a voltage protector R5 and a resistor R6, one end of the voltage dependent resistor R3 is used as an input end A, the other end of the voltage dependent resistor R5 is connected with a circuit ground, one end of the voltage dependent resistor R4 is used as an input end B, and the other end of the voltage dependent resistor R3883 is connected with the circuit ground; the voltage protector R5 and the resistor R6 are respectively connected in series between the input end A and the input end B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202220390471.8U CN217159270U (en) | 2022-02-25 | 2022-02-25 | Novel ship-borne multistage electromagnetic pulse protection filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220390471.8U CN217159270U (en) | 2022-02-25 | 2022-02-25 | Novel ship-borne multistage electromagnetic pulse protection filter |
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| CN217159270U true CN217159270U (en) | 2022-08-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118282195A (en) * | 2024-04-08 | 2024-07-02 | 北京泰派斯特电子技术有限公司 | Electromagnetic pulse protection device of direct current power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118282195A (en) * | 2024-04-08 | 2024-07-02 | 北京泰派斯特电子技术有限公司 | Electromagnetic pulse protection device of direct current power supply |
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