CN114597880A - Net mouth lightning protection system of floating equipment - Google Patents
Net mouth lightning protection system of floating equipment Download PDFInfo
- Publication number
- CN114597880A CN114597880A CN202210211513.1A CN202210211513A CN114597880A CN 114597880 A CN114597880 A CN 114597880A CN 202210211513 A CN202210211513 A CN 202210211513A CN 114597880 A CN114597880 A CN 114597880A
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- resistor
- capacitor
- transformer
- net
- lightning protection
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Links
- 239000003990 capacitor Substances 0.000 claims abstract description 87
- HISOCSRUFLPKDE-KLXQUTNESA-N cmt-2 Chemical compound C1=CC=C2[C@](O)(C)C3CC4C(N(C)C)C(O)=C(C#N)C(=O)[C@@]4(O)C(O)=C3C(=O)C2=C1O HISOCSRUFLPKDE-KLXQUTNESA-N 0.000 claims abstract description 5
- 238000002955 isolation Methods 0.000 claims description 41
- 238000000926 separation method Methods 0.000 claims description 6
- ZXFCRFYULUUSDW-LANRQRAVSA-N cmt-3 Chemical compound C1C2CC3=CC=CC(O)=C3C(=O)C2=C(O)[C@@]2(O)C1CC(O)=C(C(=O)N)C2=O ZXFCRFYULUUSDW-LANRQRAVSA-N 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
Abstract
The invention provides a lightning protection system for a net port of floating ground equipment, which comprises a first connection terminal net port, a second connection terminal net port, a first net port transformer T1 and a second net port transformer T2, wherein a CMT0 pin of a first net port transformer T1 is connected to a main board ground through a fourth resistor R4, a fourth capacitor C4 and a fifth capacitor C5 which are sequentially connected in series, a CMT1 pin of the first net port transformer T1 is connected to the main board ground through a third resistor R3, a third capacitor C3 and a fifth capacitor C5 which are sequentially connected in series, a CMT2 pin of a first net port transformer T1 is connected to the main board ground through a second resistor R2, a second capacitor C2 and a fifth capacitor C5 which are sequentially connected in series, and a CMT3 pin of the first net port transformer T1 is connected to the main board ground through a first resistor R1, a first capacitor C1 and a fifth capacitor C5 which are sequentially connected in series. The invention has the beneficial effects that: the lightning protection capability of the floating equipment is improved.
Description
Technical Field
The invention relates to floating equipment, in particular to a lightning protection system for a net mouth of the floating equipment.
Background
With the wider and wider application environment of products, particularly in remote areas, fewer lightning protection facilities are provided, the surge protection requirement on electronic products is higher and higher, and the traditional lightning protection scheme is more prone to the application of grounding products; the improvement that surge grade required leads to the lightning protection design of floating ground product not satisfied existing network environment requirement yet, thereby the direct traditional lightning protection scheme of moving over of floating ground product can lead to the phenomenon that the product chip residual pressure is too big to lead to the chip to damage, great influence user's use experience.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a lightning protection system for a net gap of floating equipment.
The invention provides a lightning protection system for a net opening of floating ground equipment, which comprises a first connection terminal net opening, a second connection terminal net opening, a first net opening transformer T1 and a second net opening transformer T2, wherein a CMT0 pin of a first net opening transformer T1 is connected to a mainboard ground through a fourth resistor R4, a fourth capacitor C4 and a fifth capacitor C5 which are sequentially connected in series, a CMT1 pin of the first net opening transformer T1 is connected to the mainboard ground through a third resistor R3, a third capacitor C3 and a fifth capacitor C5 which are sequentially connected in series, a CMT2 pin of a first net opening transformer T1 is connected to the mainboard ground through a second resistor R2, a second capacitor C2 and a fifth capacitor C5 which are sequentially connected in series, a CMT3 pin of the first net opening transformer T1 is connected to the mainboard ground through a first resistor R1, a first capacitor C1 and a fifth capacitor C388 which are sequentially connected in series, and a second net opening transformer T6 pin of the first net opening transformer T6855 is sequentially connected in series, Sixth capacitor C6, eighth capacitor C8, and ninth capacitor C9 are connected to main board ground, and surge/return path CTP connected to first net gape transformer T1 and surge/return path CTN connected to second net gape transformer T2 are connected through seventh capacitor C7.
As a further improvement of the present invention, the first network port transformer T1 and the second network port transformer T2 are both of model number HN 2064C.
As a further improvement of the present invention, the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4 are all 0603 packaged, and have an impedance of 75 ohms; the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8 and the ninth capacitor C9 are all packaged in 1206, and have the direct-current withstand voltage capacity of 2KV and the capacitance value of 1 nF.
As a further improvement of the present invention, the layout of the first connection terminal mesh and the second connection terminal mesh on the PCB board needs to satisfy the requirement of 4KV surge isolation spacing.
As a further improvement of the present invention, the separation distance between the first connection terminal web port and the second connection terminal web port is 120 mil.
As a further improvement of the present invention, the layout of the first net gape transformer T1 and the second net gape transformer T2 on the PCB board needs to satisfy the requirement of 4KV surge isolation spacing, and the layout of the signal lines of the first connection terminal net gape and the signal lines of the second connection terminal net gape on the PCB board needs to satisfy the requirement of 4KV surge isolation spacing.
As a further improvement of the present invention, the layout of the primary side of the first net gape transformer T1 and the secondary side of the first net gape transformer T1 on the PCB board needs to satisfy the requirement of 4KV surge isolation spacing, and the layout of the primary side of the second net gape transformer T2 and the secondary side of the second net gape transformer T2 on the PCB board needs to satisfy the requirement of 4KV surge isolation spacing.
As a further improvement of the present invention, the isolation distance between the primary side of the first portal transformer T1 and the secondary side of the first portal transformer T1 is 80 mils, and the isolation distance between the primary side of the second portal transformer T2 and the secondary side of the second portal transformer T2 is 80 mils.
As a further improvement of the present invention, the layout of the first resistor R1 and the sixth resistor R6 on the PCB needs to satisfy the requirement of 4KV surge isolation distance, the layout of the second resistor R2 and the sixth resistor R6 on the PCB needs to satisfy the requirement of 4KV surge isolation distance, the layout of the third resistor R3 and the sixth resistor R6 on the PCB needs to satisfy the requirement of 4KV surge isolation distance, and the layout of the fourth resistor R4 and the sixth resistor R6 on the PCB needs to satisfy the requirement of 4KV surge isolation distance.
As a further improvement of the present invention, the separation distance between the first resistor R1 and the sixth resistor R6 is 120 mils, the separation distance between the second resistor R2 and the sixth resistor R6 is 120 mils, the separation distance between the third resistor R3 and the sixth resistor R6 is 120 mils, and the separation distance between the fourth resistor R4 and the sixth resistor R6 is 120 mils.
The invention has the beneficial effects that: through above-mentioned scheme, the lightning protection ability of floating ground equipment has been promoted.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other solutions can be obtained according to the drawings without inventive efforts.
Fig. 1 is a circuit diagram of a lightning protection system for a net gap of a floating device according to the present invention.
Fig. 2 is a layout diagram of a lightning protection system for a net gap of a floating device according to the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The implementation of the present invention is described in detail below with reference to the accompanying drawings, but not limited to a certain fixed protection voltage capability, when a network interface transformer with a stronger voltage endurance appears in the market, the surge capability can improve the lightning protection level according to the diffraction of the circuit.
As shown in fig. 1, a lightning protection system for a net gap of a floating device includes: a first connection terminal port 101, a first port transformer T1, a second connection terminal port 102, and a second port transformer T2.
The CMT0 pin of the first network port transformer T1 is connected to the main board ground through a fourth resistor R4, a fourth capacitor C4 and a fifth capacitor C5 which are sequentially connected in series, the CMT1 pin of the first network port transformer T1 is connected to the main board ground through a third resistor R3, a third capacitor C3 and a fifth capacitor C5 which are sequentially connected in series, the CMT2 pin of the first network port transformer T1 is connected to the main board ground through a second resistor R2, a second capacitor C2 and a fifth capacitor C5 which are sequentially connected in series, the CMT3 pin of the first network port transformer T1 is connected to the main board ground through a first resistor R1, a first capacitor C1 and a fifth capacitor C5 which are sequentially connected in series, a pin CT0 of the second net port transformer T2 is connected to a main board ground through a sixth resistor R6, a sixth capacitor C6, an eighth capacitor C8 and a ninth capacitor C9 which are sequentially connected in series, and a surge backflow path CTP connected to the first net port transformer T1 and a surge backflow path CTN connected to the second net port transformer T2 are connected through a seventh capacitor C7;
wherein the content of the first and second substances,
the first network port transformer T1 and the second network port transformer T2 are both HN2064C in model number;
the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are 0603 packages, and have impedance of 75 ohm;
the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8 and the ninth capacitor C9 are packaged by 1206, and have the direct-current withstand voltage capacity of 2KV and the capacitance value of 1 nF.
The invention provides a lightning protection system for a net opening of floating equipment, which has the following specific protection principle:
3 protection circuits are integrally arranged in the circuit;
the first surge protection circuit is composed of a first network port transformer T1 and a second network port transformer T2, and carries out isolation processing on the surge through the isolation capacity of 4KV of the transformers;
the second surge protection circuit is composed of a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a sixth resistor R6, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a seventh capacitor C7 and a sixth capacitor C6, and the isolation capacity of a link to 4KV is improved in a capacitor series connection mode to carry out isolation processing on the surge;
the third surge protection circuit is composed of a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a sixth resistor R6, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, an eighth capacitor C8 and a ninth capacitor C9, and the isolation capacity of the link to 4KV is improved in a capacitor series connection mode to carry out isolation processing on surges.
As shown in fig. 2, on the basis of the above circuit, the lightning protection capability can be further improved by reasonable layout and wiring of the PCB, including:
the first connecting terminal net port 101 and the second connecting terminal net port 102 need to meet the requirement of 120mil on the isolation distance of 4KV surge;
the first network port transformer T1 and the second network port transformer T2 need to meet the requirement of 80mil on the isolation distance of 4KV surge;
the primary wiring of the first network port transformer T1 and the secondary wiring of the first network port transformer T1 need to meet the requirement of 80mil on the 4KV surge isolation distance;
the primary wiring of the second network port transformer T2 and the secondary wiring of the second network port transformer T2 need to meet the requirement of 80mil on the 4KV surge isolation distance;
the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 of the first connection terminal network port 101 link and the sixth resistor R6 of the second connection terminal network port 101 link need to meet the requirement of 120mil on the 4KV surge isolation distance.
The specific isolation protection design spacing requirements are shown in table 1:
TABLE 1
When external lightning surge energy is injected from the first connecting terminal net port 101, the isolation capacity of the transformer, the capacitor and the resistor on a protective link from the first connecting terminal net port 101 to the second connecting terminal net port 102 is far larger than 4KV, and the surge energy cannot be injected into a product because a proper backflow path cannot be found, so that the product is protected from being damaged.
The net mouth lightning protection system of the floating equipment provided by the invention has the following advantages:
1. the lightning protection capability is obviously improved from the initial 1.5KV to 4 KV.
2. The lightning protection cost is reduced, the lightning protection device (such as a TSS (transistor switch) tube) can be completely removed by the isolation protection design scheme, and the surge protection problem is solved through reasonable layout and wiring.
3. The lightning protection design scheme has strong continuity, is suitable for various floating ground products, and reduces the product protection cost.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. The utility model provides a floating equipment net gape lightning protection system which characterized in that: the grid port of the first grid port transformer T1 is connected to a mainboard ground through a fourth resistor R4, a fourth capacitor C4 and a fifth capacitor C5 which are sequentially connected in series, a CMT1 pin of the first grid port transformer T1 is connected to the mainboard ground through a third resistor R3, a third capacitor C3 and a fifth capacitor C5 which are sequentially connected in series, a CMT 6852 pin of the first grid port transformer T1 is connected to the mainboard ground through a second resistor R2, a second capacitor C2 and a fifth capacitor C2 which are sequentially connected in series, a CMT2 pin of the first grid port transformer T2 is connected to the mainboard ground through a first resistor R2, a first capacitor C2 and a fifth capacitor C2 which are sequentially connected in series, a CMT2 pin of the second grid port transformer T2 is connected to the mainboard ground through a sixth resistor R2, a first capacitor C2 and a ninth capacitor C2 which are sequentially connected in series, a sixth resistor CT 2 and a capacitor C2 which are sequentially connected in series, the surge return path CTP connected to the first net gape transformer T1 and the surge return path CTN connected to the second net gape transformer T2 are connected through a seventh capacitor C7.
2. The lightning protection system for the net gap of the floating equipment as claimed in claim 1, wherein: the first network port transformer T1 and the second network port transformer T2 are both HN2064C in model number.
3. The lightning protection system for the net gap of the floating equipment as claimed in claim 1, wherein: the first resistor R1, the second resistor R2, the third resistor R3 and the fourth resistor R4 are all 0603 packaged, and have impedance of 75 ohm; the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8 and the ninth capacitor C9 are all packaged in 1206, and have the direct-current withstand voltage capacity of 2KV and the capacitance value of 1 nF.
4. The lightning protection system for the net gap of the floating equipment as claimed in claim 1, wherein: the layout of the first connecting terminal net port and the second connecting terminal net port on the PCB board needs to meet the requirement of 4KV surge isolation distance.
5. The lightning protection system for the net gap of the floating equipment as claimed in claim 4, wherein: the separation distance between the first connecting terminal net opening and the second connecting terminal net opening is 120 mil.
6. The lightning protection system for the net gap of the floating equipment as claimed in claim 1, wherein: the layout of the first network port transformer T1 and the second network port transformer T2 on the PCB board needs to meet the requirement of 4KV surge isolation spacing, and the layout of the signal line of the first connection terminal network port and the signal line of the second connection terminal network port on the PCB board needs to meet the requirement of 4KV surge isolation spacing.
7. The lightning protection system for the net gap of the floating equipment as claimed in claim 1, wherein: the layout of the primary side of the first network port transformer T1 and the secondary side of the first network port transformer T1 on the PCB board needs to meet the requirement of 4KV surge isolation distance, and the layout of the primary side of the second network port transformer T2 and the secondary side of the second network port transformer T2 on the PCB board needs to meet the requirement of 4KV surge isolation distance.
8. The lightning protection system for the net mouth of the floating equipment as claimed in claim 7, wherein: the primary side of the first net gape transformer T1 and the secondary side of the first net gape transformer T1 have an isolation distance of 80mil, and the primary side of the second net gape transformer T2 and the isolation distance of the second net gape transformer T2 have an isolation distance of 80 mil.
9. The lightning protection system for the net gape of the floating equipment as claimed in claim 1, wherein: the layout of the first resistor R1 and the sixth resistor R6 on the PCB needs to meet the requirement of 4KV surge isolation distance, the layout of the second resistor R2 and the sixth resistor R6 on the PCB needs to meet the requirement of 4KV surge isolation distance, the layout of the third resistor R3 and the sixth resistor R6 on the PCB needs to meet the requirement of 4KV surge isolation distance, and the layout of the fourth resistor R4 and the sixth resistor R6 on the PCB needs to meet the requirement of 4KV surge isolation distance.
10. The lightning protection system for the net gap of the floating equipment as claimed in claim 9, wherein: the first resistor R1 and the isolation spacing of the sixth resistor R6 is 120 mils, the second resistor R2 and the isolation spacing of the sixth resistor R6 is 120 mils, the third resistor R3 and the isolation spacing of the sixth resistor R6 is 120 mils, and the fourth resistor R4 and the isolation spacing of the sixth resistor R6 is 120 mils.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210211513.1A CN114597880A (en) | 2022-03-04 | 2022-03-04 | Net mouth lightning protection system of floating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210211513.1A CN114597880A (en) | 2022-03-04 | 2022-03-04 | Net mouth lightning protection system of floating equipment |
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| Publication Number | Publication Date |
|---|---|
| CN114597880A true CN114597880A (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210211513.1A Pending CN114597880A (en) | 2022-03-04 | 2022-03-04 | Net mouth lightning protection system of floating equipment |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162855A (en) * | 2006-10-13 | 2008-04-16 | 三菱重工业株式会社 | Control board and control apparatus |
| CN203596614U (en) * | 2013-11-08 | 2014-05-14 | 深圳市共进电子股份有限公司 | Lightning protection circuit for PSE (Power Source Equipment) multiport equipment |
| CN104639334A (en) * | 2013-11-11 | 2015-05-20 | 研祥智能科技股份有限公司 | Electronic equipment and network interface circuit |
| CN204464985U (en) * | 2015-04-03 | 2015-07-08 | 深圳市槟城电子有限公司 | A kind of POE system protection circuit and POE guard system |
| CN105470936A (en) * | 2014-08-15 | 2016-04-06 | 中国电信股份有限公司 | Network transformer lightning protection circuit for suppressing common mode surge |
| CN106159921A (en) * | 2015-04-23 | 2016-11-23 | 深圳市祈飞科技有限公司 | A kind of port lightning preventing circuit |
| CN209767148U (en) * | 2019-03-12 | 2019-12-10 | 深圳市共进电子股份有限公司 | router and surge protection circuit thereof |
-
2022
- 2022-03-04 CN CN202210211513.1A patent/CN114597880A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101162855A (en) * | 2006-10-13 | 2008-04-16 | 三菱重工业株式会社 | Control board and control apparatus |
| CN203596614U (en) * | 2013-11-08 | 2014-05-14 | 深圳市共进电子股份有限公司 | Lightning protection circuit for PSE (Power Source Equipment) multiport equipment |
| CN104639334A (en) * | 2013-11-11 | 2015-05-20 | 研祥智能科技股份有限公司 | Electronic equipment and network interface circuit |
| CN105470936A (en) * | 2014-08-15 | 2016-04-06 | 中国电信股份有限公司 | Network transformer lightning protection circuit for suppressing common mode surge |
| CN204464985U (en) * | 2015-04-03 | 2015-07-08 | 深圳市槟城电子有限公司 | A kind of POE system protection circuit and POE guard system |
| CN106159921A (en) * | 2015-04-23 | 2016-11-23 | 深圳市祈飞科技有限公司 | A kind of port lightning preventing circuit |
| CN209767148U (en) * | 2019-03-12 | 2019-12-10 | 深圳市共进电子股份有限公司 | router and surge protection circuit thereof |
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