CN102593816A - Surge protection device of gigabit active Ethernet - Google Patents

Surge protection device of gigabit active Ethernet Download PDF

Info

Publication number
CN102593816A
CN102593816A CN2012100561952A CN201210056195A CN102593816A CN 102593816 A CN102593816 A CN 102593816A CN 2012100561952 A CN2012100561952 A CN 2012100561952A CN 201210056195 A CN201210056195 A CN 201210056195A CN 102593816 A CN102593816 A CN 102593816A
Authority
CN
China
Prior art keywords
gigabit
line
power supply
level
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2012100561952A
Other languages
Chinese (zh)
Inventor
李叶来
陈清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHENZHEN HAIPENGXIN ELECTRONICS CO Ltd
Original Assignee
SHENZHEN HAIPENGXIN ELECTRONICS CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHENZHEN HAIPENGXIN ELECTRONICS CO Ltd filed Critical SHENZHEN HAIPENGXIN ELECTRONICS CO Ltd
Priority to CN2012100561952A priority Critical patent/CN102593816A/en
Publication of CN102593816A publication Critical patent/CN102593816A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Dc Digital Transmission (AREA)

Abstract

The invention discloses a surge protection device of a gigabit active Ethernet. The device comprises a plurality of line pairs used for transmitting a data signal and transmitting a direct current power supply. The line pairs are arranged between a user access port and a direct current coupling network transformer circuit. Each line pair is provided with a first level protection circuit, a decoupling circuit and a second level protection circuit which are connected in order, wherein the first level protection circuit comprises a switch-type device and a first level voltage limiting device; and the second protection circuit comprises a second level voltage limiting device. The surge protection device has the advantages of large flow capacity, low residual voltage, no continuous flow, and small interelectrode capacitance.

Description

The surge protector of the active Ethernet of gigabit
Technical field
The present invention relates to the active ethernet technology of gigabit, relate in particular to the surge protector of the active Ethernet of a kind of gigabit.
Background technology
Active Ethernet (Power Over Ethernet; POE) refer under the situation that existing Ethernet Cat.5 wiring architecture does not make any changes; When being some IP-based terminals (like IP phone machine, wireless local network connecting point AP, web camera etc.) transmission of data signals, kind equipment provides the technology of direct current supply for this reason.POE also is called as the electric supply installation based on local area network (LAN), or is called POE etc. for short.This is to utilize existing standard ethernet transmission cable to transmit the newest standards standard of data and electrical power simultaneously, and has kept the compatibility with existing Ethernet device and user.
100,000,000 POE adopt 1-2, two pairs of line transmission signals of 3-6,4-5, two pairs of line power supplies of 7-8, and its feature is that signal and power supply are the separate lines transmission.
Gigabit POE then adopts 1-2,3-6,4-5, four pairs of whole transmission signals of line of 7-8, and these four pairs of lines also will transmit DC power supply simultaneously, and the 1-2-4-5 line connects positive source, and the 3-6-7-8 line connects power cathode.Power is less also can adopt two pairs of lines power supplies (the 4-5 line connects positive pole, the 7-8 line connects negative pole).
Because the characteristic of gigabit POE, its requires to be used for surge protective device and has bigger discharge capacity, lower residual voltage, no afterflow, very little interelectrode capacitance.And find to satisfy the surge protective device of above performance requirement in the prior art as yet.
Summary of the invention
Technical problem to be solved by this invention is: the surge protector of the active Ethernet of a kind of gigabit is provided, and this device has bigger discharge capacity, lower residual voltage, no afterflow, very little interelectrode capacitance.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
The surge protector of the active Ethernet of a kind of gigabit; Include some groups of being arranged between user access port and the direct-current coupling network transforming circuit be used for transmission of data signals and transmit the line of DC power supply right; Every group of line on be respectively arranged with successively one-level protection circuit, decoupling circuit and the two stages of circuit that connects; Wherein, said one-level protection circuit comprises the switching mode device and the one-level votage limit type device of series connection successively; Said two stages of circuit includes secondary votage limit type device.
Preferably, said switching mode device is that three utmost point gas discharge tubes, said one-level votage limit type device are piezo-resistance or Transient Suppression Diode; It is the noninductive resistance of 1~4 Ω that said decoupling circuit adopts Standard resistance range; Said secondary pressure limiting device is a Transient Suppression Diode.
Preferably, the two end electrodes of said three utmost point gas discharge tubes is connected respectively on two right lines of its line of living in, and public pole then links to each other with an end of said one-level votage limit type device, and the other end ground connection of this one-level votage limit type device.
Preferably, the two end electrodes of said Transient Suppression Diode is connected respectively on two right lines of its line of living in.
Preferably, this device also includes the power supply pressure limiting device that is arranged between the DC power supply port.
Preferably, said power supply pressure limiting device is higher than the piezo-resistance or the Transient Suppression Diode of 1.2 times of DC power supply voltages for the standard conducting voltage.
Preferably, said direct-current coupling network transforming circuit adopts and has tapped gigabit networking transformer, and the centre tap of its input is cross-linked the both positive and negative polarity to said DC power supply.
Preferably, the right quantity of said line is 4 groups, its be respectively the 1-2 line to, 3-6 line to, 4-5 line to and the 7-8 line right.
The invention has the beneficial effects as follows:
Embodiments of the invention carry out surge protection comprehensively targetedly according to unlike signal transmission loop, have forgiven that DC power supply and data-signal are poor, common mode is protected.Realized the effect of bigger discharge capacity, lower residual voltage, no afterflow, very little interelectrode capacitance.
Below in conjunction with accompanying drawing the present invention is made further detailed description.
Description of drawings
Fig. 1 is the circuit theory diagrams of an embodiment of surge protector of the active Ethernet of gigabit of the present invention.
Fig. 2 is DC power supply and the data-signal common mode surge bleed-off circuit sketch map of Fig. 1.
Fig. 3 is the data-signal differential mode two-stage surge bleed-off circuit sketch map of Fig. 1.
Fig. 4 is the DC power supply differential mode two-stage surge bleed-off circuit sketch map of Fig. 1.
The port label explanation:
J1, user access port (surge input port); J2, protection port (with being connected) by the protection switch; J3, dc supply input mouth (+48V DC power supply is connected with power supply adaptor); The J4 port is grounding ports (being connected with the earth).
Embodiment
A following embodiment who describes the surge protection circuit of the active Ethernet of gigabit of the present invention with reference to figure 1-Fig. 4 in detail; As shown in Figure 1; Present embodiment mainly include some groups of being arranged between user access port J1 (being the surge input port) and the direct-current coupling network transforming circuit 4 be used for transmission of data signals and transmit the line of DC power supply right; In the present embodiment; Said some groups of lines are to right for 4 groups of lines that are made up of 1 line-8 line, be respectively the 1-2 line to, 3-6 line to, 4-5 line to and the 7-8 line right.
Every group of line on be respectively arranged with successively the one-level protection circuit 1 that connects, decoupling circuit 2, and two stages of circuit 3, wherein, said one-level protection circuit 1 comprises the switching mode device G1-G4 and the one-level votage limit type device R V1-RV4 of series connection successively; Said two stages of circuit 3 includes secondary votage limit type device VD1-VD4.
During concrete the realization, said switching mode device G1-G4 is three utmost point gas discharge tubes, and its characteristic is that discharge capacity is big, and interelectrode capacitance is little; Said one-level votage limit type device R V1-RV4 can adopt piezo-resistance or Transient Suppression Diode, and its characteristic is that discharge capacity is big, no afterflow; It is the noninductive resistance R1-R8 of 1~4 Ω that said decoupling circuit adopts Standard resistance range, is unfavorable for the decoupling effect if resistance is too for a short time, and resistance too greatly then can increase the transfer of data loss; Said secondary pressure limiting device VD1-VD4 can adopt the Transient Suppression Diode of low conducting voltage and very little interelectrode capacitance.
With reference to figure 2, the public pole of said three utmost point gas discharge tube G1-G4 then links to each other with the end of said one-level votage limit type device R V1-RV4, and the other end ground connection of this one-level votage limit type device, constitutes the common mode protection of all 8 lines.
Two end electrodes with reference to figure 3, three utmost point gas discharge tube G1-G4 is connected respectively on two right lines of its line of living in, constitutes every group of data-signal differential mode one-level bleed-off circuit that line is right.
The two end electrodes of Transient Suppression Diode VD1-VD4 is connected respectively on two right lines of its line of living in, constitutes every group of transmission signals differential mode secondary bleed-off circuit that line is right.
Noninductive resistance R1~R8 plays the decoupling effect between above-mentioned two-stage protection.
With reference to figure 4, in addition, G1, RV1, RV2, four device series connection of G2 constitute DC power supply differential mode one-level surge bleed-off circuit, and same G3, RV3, RV4, four device series connection of G4 constitute another bleed-off circuit of DC power supply differential mode one-level surge.Present embodiment also can include the power supply pressure limiting device VD5 that is arranged between the DC power supply port J3; Constitute DC power supply differential mode secondary surge bleed-off circuit; During concrete the realization, said power supply pressure limiting device VD5 can adopt the standard conducting voltage to be higher than the piezo-resistance or the Transient Suppression Diode of 1.2 times of DC power supply voltages.Noninductive resistance R1~R8 plays the decoupling effect equally between above-mentioned two-stage protection.Here votage limit type device R V1-RV4 key has been the follow current interrupt effect, prevents switching mode device short circuit when the differential mode surge is released, and causes DC power supply detection load short circuits and closes output.
Said direct-current coupling network transforming circuit can adopt and have tapped gigabit networking transformer T1-T4; And the centre tap of its input is cross-linked the both positive and negative polarity to said DC power supply; Be that transformer T1, T3 centre tap are connected with dc power anode, transformer T2, T4 centre tap are connected with dc power cathode.
Embodiments of the invention carry out surge protection comprehensively targetedly according to unlike signal transmission loop in the coupled transfer circuit of gigabit POE DC power supply and Ethernet digital signal, forgiven that DC power supply and data-signal are poor, common mode is protected.
The above is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also are regarded as protection scope of the present invention.

Claims (8)

1. the surge protector of the active Ethernet of gigabit; Include some groups of being arranged between user access port and the direct-current coupling network transforming circuit be used for transmission of data signals and transmit the line of DC power supply right; It is characterized in that: every group of line on be respectively arranged with successively one-level protection circuit, decoupling circuit and the two stages of circuit that connects; Wherein, said one-level protection circuit comprises the switching mode device and the one-level votage limit type device of series connection successively; Said two stages of circuit includes secondary votage limit type device.
2. the surge protector of the active Ethernet of gigabit as claimed in claim 1 is characterized in that: said switching mode device is that three utmost point gas discharge tubes, said one-level votage limit type device are piezo-resistance or Transient Suppression Diode; It is the noninductive resistance of 1~4 Ω that said decoupling circuit adopts Standard resistance range; Said secondary pressure limiting device is a Transient Suppression Diode.
3. the surge protector of the active Ethernet of gigabit as claimed in claim 2; It is characterized in that: the two end electrodes of said three utmost point gas discharge tubes is connected respectively on two right lines of its line of living in; Public pole then links to each other with an end of said one-level votage limit type device, and the other end ground connection of this one-level votage limit type device.
4. the surge protector of the active Ethernet of gigabit as claimed in claim 3 is characterized in that: the two end electrodes of said Transient Suppression Diode is connected respectively on two right lines of its line of living in.
5. the surge protector of the active Ethernet of gigabit as claimed in claim 3 is characterized in that: also include the power supply pressure limiting device that is arranged between the DC power supply port.
6. the surge protector of the active Ethernet of gigabit as claimed in claim 5 is characterized in that: said power supply pressure limiting device is higher than the piezo-resistance or the Transient Suppression Diode of 1.2 times of DC power supply voltages for the standard conducting voltage.
7. the surge protector of the active Ethernet of gigabit as claimed in claim 6; It is characterized in that: said direct-current coupling network transforming circuit adopts and has tapped gigabit networking transformer, and the centre tap of its input is cross-linked the both positive and negative polarity to said DC power supply.
8. like the surge protector of the active Ethernet of each described gigabit among the claim 1-7, it is characterized in that: the right quantity of said line is 4 groups, its be respectively the 1-2 line to, 3-6 line to, 4-5 line to and the 7-8 line right.
CN2012100561952A 2012-03-06 2012-03-06 Surge protection device of gigabit active Ethernet Pending CN102593816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012100561952A CN102593816A (en) 2012-03-06 2012-03-06 Surge protection device of gigabit active Ethernet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012100561952A CN102593816A (en) 2012-03-06 2012-03-06 Surge protection device of gigabit active Ethernet

Publications (1)

Publication Number Publication Date
CN102593816A true CN102593816A (en) 2012-07-18

Family

ID=46482145

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012100561952A Pending CN102593816A (en) 2012-03-06 2012-03-06 Surge protection device of gigabit active Ethernet

Country Status (1)

Country Link
CN (1) CN102593816A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102969706A (en) * 2012-11-23 2013-03-13 上海斐讯数据通信技术有限公司 POE (Power Over Ethernet) power supply and lightning protection system and method
CN104201662A (en) * 2014-09-17 2014-12-10 深圳科安达电子科技股份有限公司 System for providing surge energy control for POE (power over Ethernet) Ethernet
CN104459471A (en) * 2014-12-17 2015-03-25 施耐德万高(天津)电气设备有限公司 Arc fault detection device based on POE technology
CN103872673B (en) * 2014-03-28 2018-04-24 杭州敦崇科技股份有限公司 A kind of three-level lightning-protection module of network interface protection
CN109347081A (en) * 2018-12-19 2019-02-15 广州广电计量检测股份有限公司 A kind of high-grade carrying out surge protection and the design of the ethernet interface circuit of high EMI performance
CN113644924A (en) * 2021-01-26 2021-11-12 青岛鼎信通讯股份有限公司 Signal receiving circuit applied to 10KV medium-voltage carrier system

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1472859A (en) * 2002-07-30 2004-02-04 华为技术有限公司 Lightening arresting method and device for Ethernet port
CN1549416A (en) * 2003-05-10 2004-11-24 华为技术有限公司 Thunder proof protective circuit for Ethernet interface
CN101227087A (en) * 2008-01-08 2008-07-23 中兴通讯股份有限公司 PoE port and lightning protection device thereof
CN101540683A (en) * 2008-03-17 2009-09-23 华为技术有限公司 Interface circuit and communication equipment
CN201466715U (en) * 2009-06-10 2010-05-12 北京欧地安科技股份有限公司 Surge protector of gigabit network
CN201466714U (en) * 2009-06-10 2010-05-12 北京欧地安科技股份有限公司 Lightning arrester for communication apparatus
CN201490712U (en) * 2009-08-25 2010-05-26 杭州华三通信技术有限公司 Common-mode surge protection circuit for Ethernet interface
CN101793930A (en) * 2010-02-01 2010-08-04 中兴通讯股份有限公司 System, device and method for testing power over Ethernet (POE) function
CN102075331A (en) * 2010-11-04 2011-05-25 中兴通讯股份有限公司 Ethernet power supply end equipment as well as system and method thereof for realizing power supply
CN102324739A (en) * 2011-09-29 2012-01-18 株洲普天中普防雷科技有限公司 Lightning strike and surge prevention method for power over Ethernet and thunder preventer

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1472859A (en) * 2002-07-30 2004-02-04 华为技术有限公司 Lightening arresting method and device for Ethernet port
CN1549416A (en) * 2003-05-10 2004-11-24 华为技术有限公司 Thunder proof protective circuit for Ethernet interface
CN101227087A (en) * 2008-01-08 2008-07-23 中兴通讯股份有限公司 PoE port and lightning protection device thereof
CN101540683A (en) * 2008-03-17 2009-09-23 华为技术有限公司 Interface circuit and communication equipment
CN201466715U (en) * 2009-06-10 2010-05-12 北京欧地安科技股份有限公司 Surge protector of gigabit network
CN201466714U (en) * 2009-06-10 2010-05-12 北京欧地安科技股份有限公司 Lightning arrester for communication apparatus
CN201490712U (en) * 2009-08-25 2010-05-26 杭州华三通信技术有限公司 Common-mode surge protection circuit for Ethernet interface
CN101793930A (en) * 2010-02-01 2010-08-04 中兴通讯股份有限公司 System, device and method for testing power over Ethernet (POE) function
CN102075331A (en) * 2010-11-04 2011-05-25 中兴通讯股份有限公司 Ethernet power supply end equipment as well as system and method thereof for realizing power supply
CN102324739A (en) * 2011-09-29 2012-01-18 株洲普天中普防雷科技有限公司 Lightning strike and surge prevention method for power over Ethernet and thunder preventer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102969706A (en) * 2012-11-23 2013-03-13 上海斐讯数据通信技术有限公司 POE (Power Over Ethernet) power supply and lightning protection system and method
CN102969706B (en) * 2012-11-23 2015-08-05 上海斐讯数据通信技术有限公司 The system and method for a kind of POE Power over Ethernet lightning protection
CN103872673B (en) * 2014-03-28 2018-04-24 杭州敦崇科技股份有限公司 A kind of three-level lightning-protection module of network interface protection
CN104201662A (en) * 2014-09-17 2014-12-10 深圳科安达电子科技股份有限公司 System for providing surge energy control for POE (power over Ethernet) Ethernet
CN104201662B (en) * 2014-09-17 2018-01-02 深圳科安达电子科技股份有限公司 The system that a kind of POE Ethernets provide surge energy control
CN104459471A (en) * 2014-12-17 2015-03-25 施耐德万高(天津)电气设备有限公司 Arc fault detection device based on POE technology
CN109347081A (en) * 2018-12-19 2019-02-15 广州广电计量检测股份有限公司 A kind of high-grade carrying out surge protection and the design of the ethernet interface circuit of high EMI performance
CN113644924A (en) * 2021-01-26 2021-11-12 青岛鼎信通讯股份有限公司 Signal receiving circuit applied to 10KV medium-voltage carrier system

Similar Documents

Publication Publication Date Title
CN102185698B (en) Ethernet power supply port protective circuit and ethernet power supply equipment
CN102593816A (en) Surge protection device of gigabit active Ethernet
CN102110980B (en) Lightning protection circuit
TWI487319B (en) Power-over-ethernet relay system, power injector and access point
CN202009229U (en) Ethernet feed port group, anti-surge protection circuit and Ethernet feed equipment
CN202353199U (en) Lighting-surge-preventing and lighting-preventing device for Ethernet power supply network
CN102324739B (en) Lightning strike and surge prevention method for power over Ethernet and thunder preventer
CN201616888U (en) Ethernet optical network unit
CN104201662B (en) The system that a kind of POE Ethernets provide surge energy control
CN207994622U (en) Lightning protection anti electrostatic protects circuit, communicating circuit, Switching Power Supply and electronic equipment
CN103684344B (en) The transconductance circuit that corner frequency is adjustable
CN102957137B (en) Ethernet overcurrent-overvoltage protector
CN204118718U (en) The system that a kind of POE Ethernet provides surge energy to control
CN101247236B (en) Ethernet power receiving equipment and its protection method
CN212518971U (en) Direct current carrier communication circuit
CN212518970U (en) Non-polarity direct current carrier communication circuit
CN102969706B (en) The system and method for a kind of POE Power over Ethernet lightning protection
CN204118722U (en) A kind of three grades of lightning-protection modules of network interface protection
CN203377595U (en) Lightning protection circuit capable of protecting RS422 communication signal
CN201656465U (en) Overcurrent-overvoltage preventing port protection circuit
CN207475193U (en) A kind of PoE electric power systems lightning protection circuit
CN106100128A (en) Active power distribution network intelligent terminal's accumulator isolation monitoring device
CN208158115U (en) A kind of lightning protection circuit of POE interchanger
CN203722226U (en) Lightning protection device integrating lightning protection, signal transmission and power supply into one body
CN204156522U (en) A kind of surge protector of end cross-over connection method active Ethernet

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20120718