CN102324738A - Gigabit network thunder preventing method and device - Google Patents
Gigabit network thunder preventing method and device Download PDFInfo
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- CN102324738A CN102324738A CN201110295699A CN201110295699A CN102324738A CN 102324738 A CN102324738 A CN 102324738A CN 201110295699 A CN201110295699 A CN 201110295699A CN 201110295699 A CN201110295699 A CN 201110295699A CN 102324738 A CN102324738 A CN 102324738A
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Abstract
The invention provides a gigabit network thunder preventing method and device. In the invention, the thunder preventing device (GDT) is arranged between a protective wire and a grounded wire in the gigabit network thunder preventing device; a low-capacitance diode array circuit D is arranged between the protective wire and a twisted pair in the gigabit network thunder preventing device; current carrying capability of the thunder preventing device can be improved through the GDT; capacitance of the whole thunder preventing circuit can be minimized through the low-capacitance diode array circuit D; interference of the thunder preventing circuit on signal transmission can be reduced; the normal operation of equipment can be ensured in case of thunder and lightning as well as overvoltage; and performances of the gigabit network thunder preventing device are improved. The gigabit network thunder preventing device provided by the invention is free of the traditional energy matching device, and has the advantages of low impedance, low insert loss, low capacitance, low-voltage protection level and the like.
Description
Technical field
The present invention relates to a kind of network ' s thunder method and lightning protection device, more specifically, relate to a kind of gigabit networking lightening arresting method and lightning protection device, be mainly used in lightning protection to the gigabit networking signal transmission system is provided, belong to the network ' s thunder technical field.
Background technology
Shocking preventing technology is divided into direct lightning strike protection and induction thunder protection two big categories, and the induction thunder causes the probability of damage to be higher than direct lightning strike far away to present microelectronic device.Network ' s thunder belongs to induction thunder protection category, in direct lightning strike is released process, as long as there is the place of circuit all can form transient voltage; Thereby the equipment to the circuit two ends forms damage, so the protection of network signal lightning protection device has directivity; The lightning current of sensing on netting twine road direction along the line two ends are impacted; Handle so need the network terminal device all need do lightning protection, otherwise can not take into account from beginning to end, do not have due protection effect.
The network signal lightning protection device need mate with the network signal transmission rate; Transmission rate is divided into two kinds of 100,000,000 (100Mbps) and gigabits (1000Mbps) usually; The kilomega network transfer of data has particularity, should describe with some special parameters: decay, far and near end are crosstalked, distance is held return loss, ratio is crosstalked in decay, the power total value of crosstalking is to weigh the important parameter of gigabit networking performance, must reach requirement simultaneously; Have one defective, it is defective to be regarded as the network ' s thunder device.It is not just can weigh with Insertion Loss, one or two data of transmission rate.Therefore, the gigabit networking lightning protection device must possess the requirement of network performance, otherwise it will be inapplicable.
Find that through preliminary search the technical scheme of existing network lightning protection is also few, and is following about the more representational technical scheme of gigabit networking lightning protection:
One; Application number is that 200510109160.0 patent of invention discloses a kind of siganl thunder-proof device, comprises one-level protection circuit and two stages of circuit, and the one-level protection circuit is connected between holding wire and the ground; It is characterized in that; Said two stages of circuit is one or more, and the signal processing circuit that each two stages of circuit and at least one need protection is connected in parallel, an end ground connection of two stages of circuit and signal processing circuit; The other end is connected to holding wire through filter circuit, and the frequency separation that said filter circuit allows to pass through is more than or equal to the processing frequency range of connected signal processing circuit.
Two; Application number is that 200520108975.2 utility model patent discloses a kind of kilomega network lightning protection device; Comprise an one-level thunder and lightning leadage circuit, a decoupling circuit and a secondary thunder and lightning leadage circuit; And be connected between the input and output of said lightning protection device according to said sequence, said three partial circuits all are connected respectively on 8 network data lines; Also can comprise an anti-jamming circuit, said anti-jamming circuit is connected between the input and output of said lightning protection device.
The deficiency of prior art scheme is: in order to reach higher through-current capacity and to obtain lower residual voltage level; The network ' s thunder device adopts multistage lightning protection components and parts combination mostly at present; Adopt energy to cooperate device to carry out decoupling in the middle of the multistage lightning protection components and parts, guarantee that back level equipment is not damaged by powerful lightning current or overvoltage, but the lightning protection device of this multistage lightning protection component combination is because energy cooperates device to be series in the major loop; Demonstrate bigger impedance; Again because a level lightning protection component in back demonstrates bigger electric capacity in high frequency, thereby cause when causing being linked into the series connection of network ' s thunder device in the main circuit and insert loss increase, signal attenuation, influence Network Transmission.
Therefore, be necessary prior art is improved.
Summary of the invention
The technical problem that the present invention will solve is: network ' s thunder device of the prior art; Because energy cooperates device to be series in the major loop; Cause impedance bigger; Again since after be that lightning protection component demonstrates bigger electric capacity in high frequency, thereby cause when causing being linked into network ' s thunder device series connection in the main circuit and insert loss increase, signal attenuation, influence Network Transmission.To deficiency of the prior art, the present invention provides that a kind of parasitic capacitance is little, the residual voltage level is low, lightning protection circuit and transmission circuit gigabit networking lightening arresting method and lightning protection device arranged apart.
The present invention adopts following technical scheme for the technical solution problem:
A kind of gigabit networking lightening arresting method is provided with lightning protection component GDT between protective wire and the ground wire in said gigabit networking lightning protection device, and low di-cap array circuit D is set between the twisted-pair feeder in said gigabit networking lightning protection device; Improve the discharge capacity of lightning protection device through lightning protection component GDT; Make whole lightning protection circuit electric capacity drop to minimum through low di-cap array circuit simultaneously; Reduce the interference of lightning protection circuit to the signal transmission; Protection equipment is the ability operate as normal under thunder and lightning and over-voltage condition, improves gigabit networking lightning protection device performance.
According to a kind of gigabit networking lightning protection device that said method proposed; Comprise lightning protection component; It is characterized in that: also comprise some diodes, said diode is arranged between the some groups of twisted-pair feeders that are used for the network connection, and said lightning protection component is arranged between said set of twisted pair and the ground.
Further, positive and negative some diodes of connecting between every group of twisted-pair feeder, the voltage at said diode string two ends is not less than the operating voltage between the twisted-pair feeder, is not higher than the highest residual voltage value that twisted-pair feeder can bear.
Further, said lightning protection component is connected between said diode string and the ground.
Said lightning protection component is the GDT gas discharge tube, perhaps is other lightning protection components.
Said lightning protection component and said diode circuit and electric connection line thereof are arranged on the ordinary electronic wiring board, and twisted-pair feeder and other are used for circuit and the apparatus arrangement of network wire size transmission at the High-Frenquency Electronic Circuit plate, and lightning protection circuit is separated with signal circuit.
The invention has the advantages that: 1, lightning protection device according to the invention does not have traditional energy cooperation device, has reduced the impedance of circuit, network ' s thunder device insertion loss is reduced to meets the requirements of the standard, and makes network transmission performance more superior; 2, between the online and line diode array circuit is set, makes lightning protection circuit electric capacity drop to minimum, reduce the interference of lightning protection circuit to the signal transmission, the diode circuit residual voltage is extremely low simultaneously, can protecting network equipment can operate as normal under thunder and lightning and over-voltage condition.
Description of drawings
Fig. 1 is the circuit structure diagram of network ' s thunder device according to the invention;
Among the figure: 1 ~ 8 for being used for the twisted-pair feeder that network connects, and D is the diode array circuit, and GDT is the GDT gas discharge tube.
Embodiment
Coming further to set forth the present invention below in conjunction with accompanying drawing and embodiment, is lightning protection component with the GDT gas discharge tube, is the lightning protection object with the gigabit networking.
Can find out from accompanying drawing and the present invention relates to a kind of gigabit networking lightening arresting method; In said gigabit networking lightning protection device, between protective wire and the ground wire lightning protection component GDT is set, and in said gigabit networking lightning protection device, low di-cap array circuit D is set between protective wire and the twisted-pair feeder; Improve the discharge capacity of lightning protection device through lightning protection component GDT; Make whole lightning protection circuit electric capacity drop to minimum through low di-cap array circuit simultaneously; Reduce the interference of lightning protection circuit to the signal transmission; Protection equipment is the ability operate as normal under thunder and lightning and over-voltage condition, improves gigabit networking lightning protection device performance.
According to a kind of network ' s thunder device that said method proposed; Comprise lightning protection component GDT; It is characterized in that: also comprise some diodes, said diode is arranged between 4 groups of twisted-pair feeders that are used for the network connection, and said lightning protection component GDT is arranged between said set of twisted pair and the ground.
Further, positive and negative some diodes of connecting between every group of twisted-pair feeder, the voltage at said diode string two ends is not less than the operating voltage between the twisted-pair feeder, is not higher than the highest residual voltage value that twisted-pair feeder can bear.
Further, said lightning protection component is connected between said diode string and the ground.
Said lightning protection component is the GDT gas discharge tube, perhaps is other lightning protection components.
Said lightning protection component and said diode circuit and electric connection line thereof are arranged on the ordinary electronic wiring board, and twisted-pair feeder and other are used for circuit and the apparatus arrangement of network wire size transmission at the High-Frenquency Electronic Circuit plate, and lightning protection circuit is separated with signal circuit.
Embodiment
As shown in Figure 1, as the lightning protection object, the combination of twisted-pair feeder is respectively line 1 and line 2, line 3 and line 6, line 4 and line 5, line 7 and line 8 with the gigabit networking of four groups of twisted-pair feeder transmission signals.
A kind of lightning protection device that is used for this gigabit networking; Comprise the GDT pipe; Also comprise diode, positive and negative several diodes of connecting between every group of twisted-pair feeder, the operating voltage between the said twisted-pair feeder is 5V; The conduction terminal voltage of a diode is 0.7V, so want 8 diodes of positive anti-series could guarantee the circuit operate as normal at least; If diode is too much, can cause diode string two ends residual voltage too high again, damage equipment, in this example, 10 diodes of maximum positive and negative series connection between the twisted-pair feeder.
Said lightning protection component is selected GDT gas anti-thunder tube for use, and said GDT gas anti-thunder tube is connected between diode string and the ground.
The lightning protection operation principle of the foregoing description is: when lightning current or overcurrent flow through twisted-pair feeder, can electric current be caused GDT gas anti-thunder tube through the diode string, play the effect of protection equipment; When lightning current when come in the circuit two ends, the diode string of positive and negative setting can guarantee that the lightning current that both direction is come in all is clamped at below the 7V, plays the effect of protection equipment.
The present invention also can be used for the lightning protection of other networks, and the quantity that only needs to change diode between line and the line gets final product, and all distortion that does not break away from spirit of the present invention all should be regarded as within protection scope of the present invention.
Claims (6)
1. gigabit networking lightening arresting method is characterized in that: in said gigabit networking lightning protection device, between protective wire and the ground wire lightning protection component GDT is set, and in said gigabit networking lightning protection device, between protective wire and the twisted-pair feeder low di-cap array circuit D is set; Improve the discharge capacity of lightning protection device through lightning protection component GDT; Make whole lightning protection circuit electric capacity drop to minimum through low di-cap array circuit simultaneously; Reduce the interference of lightning protection circuit to the signal transmission, protection equipment can operate as normal under thunder and lightning and over-voltage condition.
2. a gigabit networking lightning protection device comprises lightning protection component, it is characterized in that: also comprise some diodes, said diode is arranged between the some groups of twisted-pair feeders that are used for the network connection, and said lightning protection component is arranged between said set of twisted pair and the ground.
3. according to the said a kind of gigabit networking lightning protection device of claim 1; It is characterized in that: positive and negative some diodes of connecting between every group of twisted-pair feeder; The voltage at said diode string two ends is not less than the operating voltage between the twisted-pair feeder, is not higher than the highest residual voltage value that twisted-pair feeder can bear.
4. according to claim 1 or 2 said a kind of gigabit networking lightning protection devices, it is characterized in that: said lightning protection component is connected between said diode string and the ground.
5. according to the said a kind of gigabit networking lightning protection device of claim 3, it is characterized in that: said lightning protection component is the GDT pipe, perhaps is other lightning protection components.
6. according to the said a kind of gigabit networking lightning protection device of claim 4; It is characterized in that: said lightning protection component and said diode circuit and electric connection line thereof are arranged on the ordinary electronic wiring board; Twisted-pair feeder and other are used for circuit and the apparatus arrangement of network wire size transmission at the High-Frenquency Electronic Circuit plate, and lightning protection circuit is separated with signal circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110295699A CN102324738A (en) | 2011-09-28 | 2011-09-28 | Gigabit network thunder preventing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110295699A CN102324738A (en) | 2011-09-28 | 2011-09-28 | Gigabit network thunder preventing method and device |
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| Publication Number | Publication Date |
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| CN102324738A true CN102324738A (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110295699A Pending CN102324738A (en) | 2011-09-28 | 2011-09-28 | Gigabit network thunder preventing method and device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5717561A (en) * | 1995-08-11 | 1998-02-10 | The Whitaker Corporation | Sharing arrangement for surge protection circuitry |
| JP2000050494A (en) * | 1998-07-23 | 2000-02-18 | Nissei Hitachi Denshi Service Kk | Arrester for coaxial cable |
| CN2874885Y (en) * | 2005-06-15 | 2007-02-28 | 刘光纯 | Network lightning arrester |
-
2011
- 2011-09-28 CN CN201110295699A patent/CN102324738A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5717561A (en) * | 1995-08-11 | 1998-02-10 | The Whitaker Corporation | Sharing arrangement for surge protection circuitry |
| JP2000050494A (en) * | 1998-07-23 | 2000-02-18 | Nissei Hitachi Denshi Service Kk | Arrester for coaxial cable |
| CN2874885Y (en) * | 2005-06-15 | 2007-02-28 | 刘光纯 | Network lightning arrester |
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Application publication date: 20120118 |