CN202940824U - Power over Ethernet (POE) device - Google Patents
Power over Ethernet (POE) device Download PDFInfo
- Publication number
- CN202940824U CN202940824U CN 201220637564 CN201220637564U CN202940824U CN 202940824 U CN202940824 U CN 202940824U CN 201220637564 CN201220637564 CN 201220637564 CN 201220637564 U CN201220637564 U CN 201220637564U CN 202940824 U CN202940824 U CN 202940824U
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- Prior art keywords
- ethernet port
- discharge tube
- port transformer
- poe
- ground
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Abstract
The utility model provides a power over Ethernet (POE) device, comprising a mainboard chip, an Ethernet port transformer, an RJ45 connector and a power supply management chip. The primary tap of the Ethernet port transformer is connected with the power supply management chip. Signal lines on the primary of the Ethernet port transformer are connected with the RJ45 connector. The secondary of the Ethernet port transformer is connected with the mainboard chip through signal lines. The primary tap of the Ethernet port transformer is connected with a discharge tube which discharges electricity to the ground. At the same time, a discharge tube is arranged between the signal lines on the secondary of the Ethernet port transformer, and a discharge tube which discharges electricity to the ground is also arranged between the signal line and the ground. When external thunder strike a net cable, electricity enters the primary tap of the Ethernet port transformer through the net cable, and the discharge tube connected with the primary tap of the Ethernet port transformer is conducted immediately so as to enable the electricity to be discharged to the ground instantly. In addition, if little residual current is coupled to the secondary through the Ethernet port transformer, the discharge tubes connected on the secondary discharge the coupled residual current to the ground thoroughly.
Description
[technical field]
The utility model relates to network service hardware device field, relates in particular to a kind of POE(Power over Ethernet of network communication field, Power over Ethernet) power supply unit.
[background technology]
POE system (Power Over Ethernet) comprises 2 parts altogether: power supply unit PSE(Power Sourcing Equipment) with powered device PD (Powered Device).POE refers in the situation that existing Ethernet Cat.5 wiring architecture does not make any changes, being some IP-based terminal PD(such as IP phone machine, wireless local network connecting point AP, web camera etc.) in transmission of data signals, kind equipment provides the technology of direct current supply for this reason.The POE technology can be when guaranteeing existing structure wiring safety and guaranteeing the normal operation of existing network, and power receiving equipment can also directly by the power taking on power supply unit of common netting twine, thoroughly solve the problem of power taking difficulty.
Along with the develop rapidly of modern technologies, the POE power supply technique also gradually from original maximum 15W power supply of supporting, is updated to 30W, 60W, and the product of the minority release 90W of producer power supply is more arranged.The 802.3af standard that IEEE formulates also is updated to the 802.3at standard, and is existing again at the formulation new standard.The POE product also expands to outdoor use by original indoor use, and the environment of POE product work is also more and more abominable.Be subjected to the variation of global climate, especially the impact of global warming, heavy rain is with the frequent appearance of the extreme weathers such as high temperature, make the more frequent of thunder and lightning generation, most of netting twine picks out the interference that thunder and lightning is easily introduced in outdoor use meeting, and corresponding is the PHY mainboard chip (physical chip of POE power supply unit therewith, be mainboard chip) integrated level more and more higher, degree of protection is also more and more lower, thereby the PHY mainboard chip is easy to be hit and damage by thunder and lightning.
[utility model content]
The technical problem that the utility model need solve is to overcome above-mentioned deficiency, and a kind of POE power supply unit of being damaged by thunder and lightning of preventing is provided.
For solving above-mentioned technical problem, the utility model has designed a kind of POE power supply unit, comprise mainboard chip, net mouth transformer, RJ45 connector and power management chip, the elementary tap of described net mouth transformer is connected with power management chip, holding wire on described net mouth transformer elementary is connected with the RJ45 connector, the secondary of described net mouth transformer is connected with mainboard chip by holding wire, is connected in the elementary tap of net mouth transformer and releases the discharge tube that discharges into the earth.
Further improve as the utility model, be provided with discharge tube between the holding wire on described net mouth transformer is secondary, holding wire releases to also being provided with between ground the discharge tube that discharges into the earth.
The utility model POE power supply unit product prevents the principle damaged by thunder and lightning: when external lightning hits netting twine, electric current flow into the elementary tap of net mouth transformer by netting twine, be connected on the discharge tube conducting immediately of the elementary tap of net mouth transformer, electric current logical being discharged in the earth of moment gone.
Simultaneously, the secondary discharge tube that also is provided with of net mouth transformer is equivalent to release circuit for the second time, if having few aftercurrent be coupled to by net mouth transformer secondary, the release circuit for the second time on secondary, the electric current that coupling is come in thoroughly is discharged into the earth.
[description of drawings]
Fig. 1 is the structural representation of the utility model POE power supply unit.
[embodiment]
The utility model is described in further detail below in conjunction with drawings and embodiments.
The utility model POE power supply unit specifically comprises the POE switch, POE hub etc.The present embodiment, POE power supply unit the have been integrated POE switch of POE technology can be powered for web camera, IP phone, industrial sensor, wireless aps and other the electric product that is subjected to.
As shown in Figure 1, the POE switch comprises mainboard chip (also claiming the PHY chip), net mouth transformer, RJ45 connector and power management chip, and these hardware modules all are contained in the casing of POE switch.The elementary tap of described net mouth transformer is connected with power management chip, and the holding wire on described net mouth transformer elementary is connected with the RJ45 connector, and the secondary of described net mouth transformer is connected with mainboard chip by the holding wire on it.
The elementary tap of net mouth transformer is connected with power management chip, and the elementary and RJ45 connector of net mouth transformer is connected by holding wire.Thereby power supply signal is transferred to the RJ45 connector by holding wire from power management chip output again after net mouth transformer, thereby outside power receiving equipment is connected with the RJ45 connector by netting twine and receives power supply signal.Elementary tap at net mouth transformer also is provided with the discharge tube that discharges into the earth.The mode of discharge tube ground connection has a variety of modes, and general, the casing of POE power supply unit is with regard to ground connection, thereby the earth terminal that the utility model discharge tube is put directly is connected with casing, discharges into the earth by casing.
In the present embodiment, the discharge tube that the elementary tap of net mouth transformer is connected to can be selected the semiconductor TVS pipe (Transient Voltage Suppressor, transient voltage twin zener dioder) of 110V conducting.When external lightning hits netting twine, when electric current flow into the elementary tap of net mouth transformer by netting twine, when voltage herein surpasses 110V, be connected on the elementary tap of net mouth transformer to the pipe of the TVS between ground (being discharge tube) meeting conducting immediately, make immediate current pass through semiconductor TVS pipe and flow into casing ground, at last by casing export in the ground of the Nature and go.Consider power line AC220V overlap joint risk as need, semiconductor TVS pipe herein is replaceable is the semiconductor TVS pipe of 400V conducting.
Because net mouth transformer isolates at voltage may do unsatisfactory, what make net mouth transformer is secondary in thunderbolt moment a part of residual voltage that also can be coupled into, therefore, be necessary the secondary increase discharge tube at net mouth transformer, concrete structure is, be connected to discharge tube between holding wire on secondary, holding wire is to being connected to discharge tube between ground again.When the secondary residual voltage of net mouth transformer (pressure reduction of holding wire etween the lines, holding wire and systematically between pressure reduction) reach 5V or more than 5V, inner corresponding discharge tube will conducting, this part residual voltage promptly is discharged into systematically goes up.
Above-described is only execution mode POE switch of the present utility model, should be pointed out that at this all POE power supply units for integrated POE technology all belong to protection range of the present utility model.
Claims (2)
1. POE power supply unit, comprise mainboard chip, net mouth transformer, RJ45 connector and power management chip, it is characterized in that, the elementary tap of described net mouth transformer is connected with power management chip, holding wire on described net mouth transformer elementary is connected with the RJ45 connector, the secondary of described net mouth transformer is connected with mainboard chip by holding wire, is connected in the elementary tap of net mouth transformer and releases the discharge tube that discharges into the earth.
2. POE power supply unit according to claim 1, it is characterized in that: be provided with discharge tube between the holding wire on described net mouth transformer is secondary, holding wire releases to also being provided with between ground the discharge tube that discharges into the earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220637564 CN202940824U (en) | 2012-11-28 | 2012-11-28 | Power over Ethernet (POE) device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220637564 CN202940824U (en) | 2012-11-28 | 2012-11-28 | Power over Ethernet (POE) device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940824U true CN202940824U (en) | 2013-05-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220637564 Expired - Fee Related CN202940824U (en) | 2012-11-28 | 2012-11-28 | Power over Ethernet (POE) device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940824U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934957A (en) * | 2015-07-10 | 2015-09-23 | 上海斐讯数据通信技术有限公司 | POE switch lightning protection circuit |
| CN110391649A (en) * | 2019-07-15 | 2019-10-29 | 韶关高尔德防雷科技有限公司 | A kind of POE combining lightning protection circuit |
| CN110855583A (en) * | 2019-12-03 | 2020-02-28 | 江苏盛世天安信息科技有限公司 | Multi-functional multi-level POE switch system |
-
2012
- 2012-11-28 CN CN 201220637564 patent/CN202940824U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934957A (en) * | 2015-07-10 | 2015-09-23 | 上海斐讯数据通信技术有限公司 | POE switch lightning protection circuit |
| CN110391649A (en) * | 2019-07-15 | 2019-10-29 | 韶关高尔德防雷科技有限公司 | A kind of POE combining lightning protection circuit |
| CN110855583A (en) * | 2019-12-03 | 2020-02-28 | 江苏盛世天安信息科技有限公司 | Multi-functional multi-level POE switch system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN WDK TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHANGHAI FEIXUN DATA COMMUNICATION TECHNOLOGY CO., LTD. Effective date: 20131112 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 201616 SONGJIANG, SHANGHAI TO: 518057 SHENZHEN, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131112 Address after: 518057 A hall, 15 floor, global digital building, three, 9, hi tech, Shenzhen, Nanshan District, Guangdong, China Patentee after: Shenzhen wandekai Technology Co. Ltd. Address before: 201616 Shanghai city Songjiang District Guangfulin Road No. 4855 Building No. 90 big industry territory Patentee before: Shanghai Feixun Data Communication Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20181128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |