CN103001776A - Network accessing device - Google Patents
Network accessing device Download PDFInfo
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- CN103001776A CN103001776A CN2012104074698A CN201210407469A CN103001776A CN 103001776 A CN103001776 A CN 103001776A CN 2012104074698 A CN2012104074698 A CN 2012104074698A CN 201210407469 A CN201210407469 A CN 201210407469A CN 103001776 A CN103001776 A CN 103001776A
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- discharge tube
- lightening
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Abstract
The invention relates to the field of communication lightening protection, in particular to a network accessing device. The network accessing device comprises a switch. A power supply anti-lightening circuit and a signal anti-lightening circuit are mounted in the switch. The network accessing device has the advantages that an energy adapter of a traditional anti-lightening device is omitted, so that line impedance is reduced, insertion loss of the anti-lightening device is lowered to meet a criterion, and network transmission performance is improved; a gas discharge tube and an electric amplitude limiting module are disposed between network data lines, so that capacitance of an anti-lightening circuit is minimized, interference of the anti-lightening circuit on signal transmission is reduced, and residual voltage of diode circuit is reduced, so that normal operation of network devices under conditions of lightening and overvoltage can be guaranteed effectively.
Description
Technical field
The present invention relates to the telecommunication equipment lightning protection field, be specifically related to a kind of network access device.
Background technology
Shocking preventing technology is divided into direct lightning protection and induction lightening protection two large categories, and the induction thunder is higher than direct stroke far away to the probability of the damage that present microelectronic device causes.Network ' s thunder belongs to induction lightning protection category; in direct lightning strike is released process; as long as there is the place of circuit all can form the transient voltage pulse; thereby the equipment to the circuit two ends forms damage, so the network signal lightning protection device protection has directivity; the lightning current of sensing on netting twine road direction along the line two ends are impacted; all need to do the lightning protection processing so need the network two ends to set, otherwise can not take into account from beginning to end, do not have due lightning protection effect.
Network signal lightning protection device need to network signal transmission rate coupling, transmission rate is divided into two kinds of 100,000,000 (lOOMbps) and gigabits (lOOOMbps) usually, the kilomega network transfer of data has particularity, should describe with some special parameters; Decay, far and near end are crosstalked, far and near end return loss, decay are crosstalked ratio, the power total value of crosstalking is to weigh the important parameter of gigabit networking performance, must reach simultaneously requirement, have one defective, should be considered as the network ' s thunder device defective.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.
In the prior art 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 the energy coordination device to carry out decoupling in the middle of the multistage lightning protection components and parts, guarantee that rear class equipment is not damaged by powerful lightning current or overvoltage, but the lightning protection device of this multistage lightning protection component combination is series in the major loop owing to the energy coordination device, present larger impedance, again because the rear class lightning protection component presents larger electric capacity in high frequency, thereby cause when causing being linked into the series connection of network ' s thunder device in the main circuit that insertion loss increases, signal attenuation affects Internet Transmission.
Summary of the invention
The object of the present invention is to provide a kind of network access device, solved lightning protection device of the prior art and had larger impedance, easily affect signal stabilization, cause that insertion loss increases, signal attenuation, affect the problem of Internet Transmission.
For solving above-mentioned technical problem, the present invention by the following technical solutions: a kind of network access device, comprise switch, power lightning protection circuit and signal lighting protection circuit are installed in the switch body,
Described power lightning protection circuit comprises gas discharge tube and three groups of high-pressure and overflowing protection modules that are cascaded and consisted of by piezo-resistance, Thermal Cutoffs, first group of one end of described high-pressure and overflowing protection module is connected with live wire, the other end is connected with gas discharge tube, second group of one end of described high-pressure and overflowing protected location is connected with zero line, the other end is connected with gas discharge tube, the 3rd group of two ends of described high-pressure and overflowing protected location connect respectively zero line and live wire, and described gas discharge tube is connected with earth connection;
Described signal lighting protection circuit comprises gas discharge tube and electronics amplitude limit module, and described gas discharge tube and electronics amplitude limit module are connected between two signal line in the network data line, and described electronics amplitude limit module is connected with earth connection.
For making the present invention play better technique effect:
Further technical scheme is that above-mentioned electronics amplitude limit module comprises bridge rectifier, transient voltage suppressor diode and two ground connection diodes, the input of described bridge rectifier connects respectively two signal line, output termination transient voltage suppressor diode two ends, in described two ground connection diodes: the output of a ground connection diode is connected with earth connection, input is connected with the output of bridge rectifier, the input of another ground connection diode is connected with earth connection, and output is connected with the output of bridge rectifier.
Further technical scheme is that above-mentioned network data line has 8.
Further technical scheme is that above-mentioned switch body fuselage is provided with the whether normal warning light of display power supply lightning protection circuit, be provided with louvre, be provided with the network port and the USB socket that are connected with signal lighting protection circuit, be provided with and power lightning protection circuit power input socket and power output socket, be provided with the earth jack that links to each other with earth connection.
Compared with prior art, the invention has the beneficial effects as follows:
One, the present invention has reduced the impedance of circuit without the energy adapter of traditional network ' s thunder device, can use network ' s thunder device insertion loss to be reduced to and meet the requirements of the standard, and makes network transmission performance more superior;
Two, between the network data line, be provided with gas discharge tube and electronics amplitude limit module; use lightning protection circuit electric capacity to be reduced to minimum; reduce lightning protection circuit to the interference of signal transmission, wherein the diode circuit residual voltage reduces, and effectively protecting network equipment can work under thunder and lightning and overpressure situation.
Description of drawings
Fig. 1 is the power lightning protection circuit connection diagram of an embodiment of a kind of network access device of the present invention.
Fig. 2 is the signal lighting protection circuit connection layout of an embodiment of a kind of network access device of the present invention shown in Fig. 1.
Fig. 3 is the body rearview of a kind of another embodiment of network access device of the present invention.
Fig. 4 is the body front view of a kind of another embodiment of network access device of the present invention shown in Fig. 3.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 and Fig. 2 show an embodiment of a kind of network access device of the present invention: a kind of network access device, comprise switch, and power lightning protection circuit and signal lighting protection circuit are installed in the switch body,
Described power lightning protection circuit comprises that gas discharge tube and three groups are by piezo-resistance; the high-pressure and overflowing protection module that Thermal Cutoffs is cascaded and consists of; first group of one end of described high-pressure and overflowing protection module is connected with live wire; the other end is connected with gas discharge tube; second group of one end of described high-pressure and overflowing protected location is connected with zero line; the other end is connected with gas discharge tube; the 3rd group of two ends of described high-pressure and overflowing protected location connect respectively zero line and live wire; described gas discharge tube is connected with earth connection; piezo-resistance wherein; adopt the chip varistor outfit low temperature fuse of function admirable to form through embedding is special; the fusing-off temperature of Thermal Cutoffs is 115 degree; it is 10A that the maximum of this Thermal Cutoffs is born electric current; when electric current surpasses 10A, so this Thermal Cutoffs possesses overcurrent; overheated defencive function.After piezo-resistance was aging, Thermal Cutoffs can disconnect piezo-resistance within the very first time from power circuit, and piezo-resistance adopts the mode of embedding, thus pressure-sensitive in ageing process, do not have smolder, the phenomenon such as blast occurs;
Described signal lighting protection circuit comprises gas discharge tube and electronics amplitude limit module, and described gas discharge tube and electronics amplitude limit module are connected between two signal line in the network data line, and described electronics amplitude limit module is connected with earth connection.
A kind of network access device preferred embodiment according to the present invention, the length of earth connection are less than 4cm, and be enough low with the residual voltage that guarantees lightning protection unit, to the protection of equipment The Gift of Being the Best You Can Be.
Another embodiment of a kind of network access device according to the present invention; because the higher 100Mbps of signal rate that transmits on the network signal circuit; circuit of high transfer rate is so protected; must guarantee that its data transfer can not be affected because of the mounted with lightning protection device; electronics amplitude limit module comprises bridge rectifier; transient voltage suppressor diode and two ground connection diodes; the input of described bridge rectifier connects respectively two signal line; output termination transient voltage suppressor diode two ends; in described two ground connection diodes: the output of a ground connection diode is connected with earth connection; input is connected with the output of bridge rectifier; the input of another ground connection diode is connected with earth connection; output is connected with the output of bridge rectifier; the diode of the low appearance value in the bridge rectifier passes and links to each other with transient voltage suppressor diode; reduce the appearance value of transient voltage suppressor diode, guarantee the transmission of circuit.
A kind of network access device preferred embodiment according to the present invention, the network data line has 8.
Fig. 3 and Fig. 4 show another embodiment of a kind of network access device of invention, the switch body fuselage is provided with the whether normal warning light of display power supply lightning protection circuit, be provided with louvre 3, be provided with the network port 4 and the USB socket 5 that are connected with signal lighting protection circuit, be provided with and power lightning protection circuit power input socket 6 and power output socket 7, for power consumption equipment provides power supply, be provided with the earth jack 8 that links to each other with earth connection, earth jack 8 is used for earth connection by plug wire mode ground connection, such structure is so that only need during ground connection the ground connection lot line directly is connected with earth connection jack interface 8 and get final product, and is simple to operation.
Another preferred embodiment of a kind of network access device according to the present invention, described warning light are divided into the red led 1 that showed and the green indicating lamp 2 that shows in the time of normal operation when lightning protection was lost efficacy.
Although invention has been described with reference to a plurality of explanatory embodiment of the present invention here, but, should be appreciated that, those skilled in the art can design a lot of other modification and execution modes, and these are revised and execution mode will drop within the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to building block and/or the layout of subject combination layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes also will be obvious.
Claims (4)
1. network access device, comprise switch, it is characterized in that: power lightning protection circuit and signal lighting protection circuit are installed in the switch body, described power lightning protection circuit comprises that gas discharge tube and three groups are by piezo-resistance, the high-pressure and overflowing protection module that Thermal Cutoffs is cascaded and consists of, first group of one end of described high-pressure and overflowing protection module is connected with live wire, the other end is connected with gas discharge tube, second group of one end of described high-pressure and overflowing protected location is connected with zero line, the other end is connected with gas discharge tube, the 3rd group of two ends of described high-pressure and overflowing protected location connect respectively zero line and live wire, and described gas discharge tube is connected with earth connection; Described signal lighting protection circuit comprises gas discharge tube and electronics amplitude limit module, and described gas discharge tube and electronics amplitude limit module are connected between two signal line in the network data line, and described electronics amplitude limit module is connected with earth connection.
2. a kind of network access device according to claim 1, it is characterized in that: described electronics amplitude limit module comprises bridge rectifier, transient voltage suppressor diode and two ground connection diodes, the input of described bridge rectifier connects respectively two signal line, output termination transient voltage suppressor diode two ends, in described two ground connection diodes: the output of a ground connection diode is connected with earth connection, input is connected with the output of bridge rectifier, the input of another ground connection diode is connected with earth connection, and output is connected with the output of bridge rectifier.
3. a kind of network access device according to claim 1 and 2, it is characterized in that: described network data line has 8.
4. a kind of network access device according to claim 1 and 2, it is characterized in that: described switch body fuselage is provided with the whether normal warning light of display power supply lightning protection circuit, be provided with louvre (3), be provided with the network port (4) and the USB socket (5) that are connected with signal lighting protection circuit, be provided with and power lightning protection circuit power input socket (6) and power output socket (7), be provided with the earth jack (8) that links to each other with earth connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104074698A CN103001776A (en) | 2012-10-23 | 2012-10-23 | Network accessing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104074698A CN103001776A (en) | 2012-10-23 | 2012-10-23 | Network accessing device |
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| CN103001776A true CN103001776A (en) | 2013-03-27 |
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| CN2012104074698A Pending CN103001776A (en) | 2012-10-23 | 2012-10-23 | Network accessing device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638629A (en) * | 2015-02-13 | 2015-05-20 | 菲尼克斯亚太电气（南京）有限公司 | Partial voltage triggered symmetric type overvoltage lightning protection circuit |
| CN104953403A (en) * | 2015-07-07 | 2015-09-30 | 湖南中普防雷股份有限公司 | Wall power socket having power system conversion function and provided with lightning protection device and operating method |
| CN105338428A (en) * | 2015-11-23 | 2016-02-17 | 内江师范学院 | Novel network distribution frame with multiple independent metal lightning protection rings |
| CN105896512A (en) * | 2015-10-28 | 2016-08-24 | 苏州研工电子科技有限公司 | Lightning stroke-proof surge circuit |
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| CN202474851U (en) * | 2012-02-22 | 2012-10-03 | 深圳远征技术有限公司 | Lightning protection system for video servers |
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| CN202949438U (en) * | 2012-10-23 | 2013-05-22 | 四川省电力公司内江电业局 | Network access device |
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| US6188557B1 (en) * | 1998-11-23 | 2001-02-13 | Tii Industries, Inc. | Surge suppressor |
| US20050180080A1 (en) * | 2002-07-02 | 2005-08-18 | Fultec Semiconductor, Inc. | Protection and indication apparatus |
| CN101950956A (en) * | 2010-11-03 | 2011-01-19 | 英利能源（中国）有限公司 | Lightning-proof electric control device of photovoltaic power generation system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638629A (en) * | 2015-02-13 | 2015-05-20 | 菲尼克斯亚太电气（南京）有限公司 | Partial voltage triggered symmetric type overvoltage lightning protection circuit |
| CN104638629B (en) * | 2015-02-13 | 2019-03-05 | 菲尼克斯亚太电气（南京）有限公司 | Divide the symmetrical overvoltage lightning protection circuit of triggering |
| CN104953403A (en) * | 2015-07-07 | 2015-09-30 | 湖南中普防雷股份有限公司 | Wall power socket having power system conversion function and provided with lightning protection device and operating method |
| CN105896512A (en) * | 2015-10-28 | 2016-08-24 | 苏州研工电子科技有限公司 | Lightning stroke-proof surge circuit |
| CN105338428A (en) * | 2015-11-23 | 2016-02-17 | 内江师范学院 | Novel network distribution frame with multiple independent metal lightning protection rings |
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Application publication date: 20130327 |