CN2786874Y - Ethernet bus power supply equipment capable of supplying high power - Google Patents
Ethernet bus power supply equipment capable of supplying high power Download PDFInfo
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- CN2786874Y CN2786874Y CN 200520009123 CN200520009123U CN2786874Y CN 2786874 Y CN2786874 Y CN 2786874Y CN 200520009123 CN200520009123 CN 200520009123 CN 200520009123 U CN200520009123 U CN 200520009123U CN 2786874 Y CN2786874 Y CN 2786874Y
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Abstract
The utility model relates to a high-power Ethernet bus power supplying device which belongs to the field of industrial site control. The utility model is composed of an Ethernet communication circuit and an Ethernet bus power supplying circuit; data signals and power supply signals are commonly connected with an RJ-45 interface and loaded by an Ethernet cable, and the output of a switching power supply in the Ethernet bus power supplying circuit is connected with the RJ-45 interface through an over-current protective circuit and an over-voltage protective circuit; a power supplying state indicating lamp circuit and a power supply on-off managing circuit are bridged on both ends of the over-voltage protective circuit. The maximum power supplied by the utility model is controlled by the parameters of a holding current of a self-recovery fuse wire in an over-current protective unit; the utility model can supply high power to a power receiving device to meet the requirement of the high power for the power receiving device. The utility model enlarges the application field of Ethernet power supplying technology; besides, a bus power supplying circuit does not use a special chip, therefore the manufacturing cost of devices is lowered.
Description
Technical field
The utility model relates to industry spot control field, relates in particular to bus power supply system part in the industry spot control field of adopting ethernet technology.
Background technology
At present, the Power over Ethernet system is a technical specification with the IEEE802.3af standard of releasing in June, 2003 mainly.This standard definition a kind of method that allows in the transmission data, to carry the 48V DC power supply by Ethernet, it can be safely, reliably Power over Ethernet PoE (Power over Ethernet) technology is introduced in the existing network infrastructure, and compatible mutually with original network equipment.In the PoE system, provide the equipment of power supply to be called as power supply unit PSE (Power Sourcing Equipment), and use the equipment of power supply to be called powered device PD (Powered Device).PSE is responsible for power supply is injected the Ethernet transmission cable, and implements the planning and the management of power.Endpoint PSE (termination power supply unit) is exactly Ethernet switch, router, hub or other network switching equipment of supporting PoE.Midspan PSE (in stride power supply unit) equipment is to be specifically designed to power management, an and equipment common and that switch is put together, the same RJ-45 port that the multichannel input and output are also arranged with switch, there are two RJ-45 jacks on corresponding every road, a jack is connected to the network switching equipment with Power over Ethernet function with short-term, as the data input port; And another jack is connected to the far-end power consumption equipment (PD) of supporting the 802.3af power supply, as the dual-purpose data/power output of data/electric power, these data/power output interface adopts the RJ-45 interface, Midspan equipment adopts in the Ethernet cable untapped 4/5 and 7/8 line to carrying power supply usually, and remaining part keeps for transfer of data to use.The Power over Ethernet system that meets the IEEE802.3af standard in the prior art is 12.95W to the maximum at the power supply that receiving end obtains, and this power grade has greatly restricted higher-wattage equipment in the use in Power over Ethernet field and the popularization of Power over Ethernet technology; And this class power supply and power receiving equipment all must adopt expensive special chip, and the manufacturing cost of equipment is increased.
Can't provide high power power more, application surface is narrow and equipment cost is too high present situation to power receiving equipment in order to overcome existing Power over Ethernet equipment PSE, the utility model provides a kind of high power industry ethernet power supply unit, this equipment can not only carry out data communication, and the DC power supply of higher-wattage is provided can for the network equipment that is connected to it.
Summary of the invention
The technical scheme that its technical problem that solves the utility model adopts is: high power industry ethernet power supply unit mainly is made up of ethernet communication circuit and industry ethernet power supply circuits two parts; the industry ethernet power supply circuits are by over-current protecting unit; Overvoltage protecting unit; power supply state indicator unit and on/off administrative unit constitute; the output of Switching Power Supply is connected to the different terminals of data/power interface by current foldback circuit and overvoltage crowbar, and the power supply state indicator light circuit and the on/off management circuit of series connection are connected across the overvoltage crowbar two ends mutually.The output port of on/off administrative unit is received on the pin of data/power interface as the DC power supply output interface; be provided with a resettable fuse in the over-current protecting unit; by changing the holding current parameter of resettable fuse, make power supply unit provide more high-power DC power supply to power receiving equipment.
The ethernet communication circuit comprises Ethernet switching chip, EEPROM, each port communication indication led circuit, crystal oscillator and network isolation transformer, Ethernet switching chip is connected to network isolation transformer, signal is sent to data/power interface again through after the isolation of network isolation transformer, data/power interface adopts standard RJ-45,1/2, No. 3/6 pin of interface is used for transmission of data signals, as signal terminal, 4/5 and No. 7/8 pin is used to transmit power supply signal, as power supply terminal.
"-" end of the input control end of solid-state relay in the on/off management circuit (K1) is connected to No. 8 pins of RJ45 interface, 4 of "-" of solid-state relay (K1) output control terminal end and RJ45 interface is connected with No. 5 pins, No. 7 pins of RJ45 interface are connected with power supply ground, and "+" end of solid-state relay input control end and "+" end of output control terminal are connected to resettable fuse through resistance (R3) and diode (D1) respectively.Power supply state indicator light circuit (23) is made up of diode (D1), light-emitting diode (D2), triode (Q1) and resistance (R1, R2).
A significant advantage of the present utility model is that power supply unit can provide the more power supply of high power level according to the needs of power receiving equipment, satisfy the demand of power receiving equipment to higher-wattage, bus-powered circuit part need not adopt special chip, has reduced the manufacturing cost of equipment.By the control of on/off management circuit, can after PD disconnects, cut off the power supply on the PSE port at once, and only when PD connects, just can provide this DC power supply on the port of PSE.
Description of drawings
The circuit connection diagram of Fig. 1 industry ethernet power supply unit
Fig. 2 is the power supply circuits block diagram of industry ethernet power supply unit
Fig. 3 is the on/off management and the power supply state indicator light circuit schematic diagram of industry ethernet power supply unit
Embodiment
With reference to accompanying drawing the technical solution of the utility model is specified, Figure 1 shows that circuit connection diagram of the present utility model, the utility model is made up of ethernet communication circuit 4, industry ethernet power supply circuits, Switching Power Supply 3, DC/DC change-over circuit 5 and RJ-45 interface 1.The ethernet communication circuit comprises that 10/100M Ethernet switching chip 41, crystal oscillator 42, led circuit 43, EEPROM44, pin initialization are provided with circuit 45, network isolation transformer 46.10/100M Ethernet switching chip inside is integrated with ethernet frame transmitting controller, ethernet physical layer transceiver controller, data buffer and mac address table, is used to transmit the Ethernet data signal; The EEPROM stored be the network switching equipment needed initialization data when starting; Led circuit is used to indicate the communications status of ethernet port.Electric power management circuit 2 and ethernet communication circuit 4 are connected respectively to RJ-45 interface 1.
Figure 2 shows that power supply circuits block diagram of the present utility model, the industry ethernet power supply circuits partly comprise Switching Power Supply, electric power management circuit.Electric power management circuit is made of current foldback circuit 21, overvoltage crowbar 22, power supply state indicator light circuit 23 and on/off management circuit 24.The DC voltage-stabilizing signal of Switching Power Supply output is through overcurrent protective circuit 21; overvoltage crowbar 22 is sent into RJ-45 interface 1; the output of on/off management circuit 24 also is connected to RJ-45 interface 1; the power supply signal that 24 pairs of on/off management circuits offer the network power receiving equipment is done the management be switched on or switched off; when power receiving equipment (must be with 4 and No. 5 pins interconnection of the RJ-45 interface of this kind equipment; 7 and No. 8 pin interconnection) when being connected to this Bus Powered Device by the Ethernet cable; just DC power supply can be provided on 4/5 and No. 7/8 pin of the data/power output interface of this equipment, and after power receiving equipment disconnects, the power supply that provides on the port can be cut off at once.Power supply state indicator light circuit 23 is serially connected between current foldback circuit 21 and the on/off management circuit 24, and indicator light is lighted and shown that this road DC power supply is normal.This industry ethernet power supply unit is controlled by the holding current parameter of the resettable fuse in the current foldback circuit 21 to the maximum power that power receiving equipment can provide; change the parameter value of holding current parameter; then can change the output power value that offers power receiving equipment, the raising of this performance number can be set according to the power bracket that transmission cable can carry.Also can in current foldback circuit 21, adopt other electric elements, the peak power output value of control power supply unit.
The data-signal of this industry ethernet power supply unit and power supply signal insert the RJ-45 interface jointly, the RJ-45 interface 1/2 with No. 3/6 pin on the line that is connected to being used to transmit the Ethernet data signal, 4/5 with No. 7/8 pin on the line that is connected to being used for the carrying power supply.
Fig. 3 is an on/off management circuit schematic diagram of the present utility model, and on/off management circuit 24 is made up of solid-state relay K1 and divider resistance R3.The resettable fuse F1 of resistance R 3 one ends in overcurrent protective circuit 21 connects Switching Power Supply 3; "+" of the input control end of the other end and solid-state relay K1 (being the c pin of K1) joins; "-" of the input control end of solid-state relay K1 (being the d pin of K1) is connected on No. 8 pins of RJ45 interface 1; and No. 7 pin of RJ45 interface 1 and power supply ground join; be connected to "+" (being a pin of K1) of the output control terminal of solid-state relay K1 behind the output process diode D1 of Switching Power Supply 3, and 4 and No. 5 pins of "-" of the output control terminal of solid-state relay K1 (being the b pin of K1) and RJ45 interface 1 join.When power receiving equipment is connected to the utility model by the Ethernet cable, "-" end of the input control end of solid-state relay K1 will be connected to power supply ground by the Ethernet cable, make and form path between the input of solid-state relay K1, then the output of solid-state relay K1 is connected, thereby will provide DC power supply on the power supply port 4/5 of RJ-45 interface 1 and 7/8 pin.
Power supply state indicator light circuit 23 in the electric power management circuit 2 is made up of diode D1, light-emitting diode D2, triode Q1 and resistance R 1, R2.The end of resettable fuse F1 in the emitter of the anode of diode D1 and triode Q1 and the current foldback circuit 21 joins; The negative electrode of diode D1 is electrically connected through the base stage of resistance R 1 with triode Q1; The collector electrode of triode Q1 is connected through the anode of resistance R 2 with light-emitting diode D2, and the negative electrode of light-emitting diode D2 is connected to power supply ground.When no power receiving equipment was connected to the utility model, triode Q1 ended, and collector current is zero, and light-emitting diode D2 can not lighted; And when connecting power receiving equipment, triode Q1 conducting, collector electrode has electric current to flow through, and light-emitting diode D2 is lighted, thereby plays the effect of indication power supply state, and this on/off management circuit 24 also can be realized by other custom circuit.
The holding current parameter of resettable fuse F1 is provided with the maximum power that RJ-45 interface 1 can provide, can change the power output grade that this industry ethernet power supplying switch offers power receiving equipment by the holding current parameter that changes F1, can only be the limitation of 12.95W thereby broken through the power supply maximum power that the traditional ethernet electric power system offers receiving end, make that the power receiving equipment of higher-wattage (can reach 30W) can be by power supply units such as Ethernet switches by connecting the twisted-pair feeder power supply of RJ45 interface 1.And needn't adopt expensive special chip, reduce the manufacturing cost of equipment.
Though be to be described as an example in the specification with Ethernet switch, but those skilled in the art will be understood that, the application's industry ethernet power supply unit is not restricted to Ethernet switch, and this industry ethernet power supply unit is suitable for supporting Ethernet switch, router, hub or other network equipment of PoE.
Claims (5)
1; a kind ofly can provide high-power industry ethernet power supply unit; the common different terminals that insert a data/power interface of the output of the output of ethernet communication circuit (4) and industry ethernet power supply circuits in this power supply unit; it is characterized in that: the industry ethernet power supply circuits partly comprise Switching Power Supply (3) and electric power management circuit (2); electric power management circuit (2) is by current foldback circuit (21); overvoltage crowbar (22); power supply state indicator light circuit (23) and on/off management circuit (24) constitute; the output of Switching Power Supply (3) is connected to the power supply terminal of described data/power interface by current foldback circuit (21) and overvoltage crowbar (22), and the power supply state indicator light circuit (23) and the on/off management circuit (24) of series connection are connected across described overvoltage crowbar (22) two ends mutually.
2, industry ethernet power supply unit according to claim 1; it is characterized in that: described current foldback circuit (21) comprises a resettable fuse (F1); one end of resettable fuse connects the output of Switching Power Supply (3), and the other end is connected to the common port of on/off management circuit (24) and power supply state indicator light circuit (23).
3, industry ethernet power supply unit according to claim 1 and 2 is characterized in that: described data/power interface is RJ-45 interface (1).
4, industry ethernet power supply unit according to claim 3, it is characterized in that: described power supply state indicator light circuit (23) is by diode (D1), light-emitting diode (D2), triode (Q1) and resistance (R1, R2) form, the emitter of the anode of diode (D1) and triode (Q1) and Switching Power Supply (3) output join, the negative electrode of diode (D1) joins through the resistance (R1) and the base stage of triode (Q1), the collector electrode of triode (Q1) is electrically connected with the anode of light-emitting diode (D2) through resistance (R2), and the negative electrode of light-emitting diode (D2) is connected to power supply ground.
5, industry ethernet power supply unit according to claim 3, it is characterized in that: "-" of the input control end of solid-state relay (K1) end is connected to No. 8 pins of RJ45 interface in the described on/off management circuit, 4 of "-" of solid-state relay (K1) output control terminal end and RJ45 interface is connected with No. 5 pins, No. 7 pins of RJ45 interface are connected with power supply ground, and "+" end of solid-state relay input control end and "+" end of output control terminal are connected to resettable fuse through resistance (R3) and diode (D1) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520009123 CN2786874Y (en) | 2005-04-07 | 2005-04-07 | Ethernet bus power supply equipment capable of supplying high power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520009123 CN2786874Y (en) | 2005-04-07 | 2005-04-07 | Ethernet bus power supply equipment capable of supplying high power |
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| CN2786874Y true CN2786874Y (en) | 2006-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200520009123 Expired - Fee Related CN2786874Y (en) | 2005-04-07 | 2005-04-07 | Ethernet bus power supply equipment capable of supplying high power |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404582B (en) * | 2008-11-12 | 2011-01-05 | 北京星网锐捷网络技术有限公司 | Management signal transmitting/receiving method and apparatus, Ethernet power supply unit and system |
| CN102075330A (en) * | 2009-11-19 | 2011-05-25 | 一硕科技股份有限公司 | Long-distance PoE power supply equipment and method |
| CN101663858B (en) * | 2007-02-13 | 2012-05-30 | 凌力尔特有限公司 | Magnetic isolation of power sourcing equipment control circuitry |
| CN101594236B (en) * | 2009-06-29 | 2012-09-05 | 华为技术有限公司 | Method, device and system for realizing power over Ethernet (POE) |
| CN102710011A (en) * | 2012-06-14 | 2012-10-03 | 济南镭之源电气有限公司 | Power over Ethernet (POE) device capable of supplying power uninterruptedly |
| CN103023663A (en) * | 2012-12-07 | 2013-04-03 | 中兴通讯股份有限公司 | Router power supply device and router power supply device method |
| CN103176021A (en) * | 2011-12-21 | 2013-06-26 | 北京普源精电科技有限公司 | Data acquisition device for bus structure |
| CN103259325A (en) * | 2012-02-15 | 2013-08-21 | 中兴通讯股份有限公司 | Power supply device and power supply method |
| CN104106190A (en) * | 2011-10-31 | 2014-10-15 | 博世汽车服务解决方案有限公司 | Vehicle communication component and process having active overvoltage protection |
| CN104520636A (en) * | 2012-07-09 | 2015-04-15 | 全球绿色照明有限公司 | Light fixture having power over ethernet power sourcing equipment |
| CN108709583A (en) * | 2017-11-30 | 2018-10-26 | 江苏苏威尔科技有限公司 | Portable wireless or the data collector and its working method of USB connections |
-
2005
- 2005-04-07 CN CN 200520009123 patent/CN2786874Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101663858B (en) * | 2007-02-13 | 2012-05-30 | 凌力尔特有限公司 | Magnetic isolation of power sourcing equipment control circuitry |
| CN101404582B (en) * | 2008-11-12 | 2011-01-05 | 北京星网锐捷网络技术有限公司 | Management signal transmitting/receiving method and apparatus, Ethernet power supply unit and system |
| CN101594236B (en) * | 2009-06-29 | 2012-09-05 | 华为技术有限公司 | Method, device and system for realizing power over Ethernet (POE) |
| CN102075330A (en) * | 2009-11-19 | 2011-05-25 | 一硕科技股份有限公司 | Long-distance PoE power supply equipment and method |
| CN104106190B (en) * | 2011-10-31 | 2017-07-25 | 博世汽车服务解决方案公司 | Vehicle communication units and method with active overvoltage protection |
| CN104106190A (en) * | 2011-10-31 | 2014-10-15 | 博世汽车服务解决方案有限公司 | Vehicle communication component and process having active overvoltage protection |
| CN103176021A (en) * | 2011-12-21 | 2013-06-26 | 北京普源精电科技有限公司 | Data acquisition device for bus structure |
| CN103259325A (en) * | 2012-02-15 | 2013-08-21 | 中兴通讯股份有限公司 | Power supply device and power supply method |
| CN102710011B (en) * | 2012-06-14 | 2015-12-09 | 济南镭之源电气有限公司 | A kind of uninterrupted power supply POE device |
| CN102710011A (en) * | 2012-06-14 | 2012-10-03 | 济南镭之源电气有限公司 | Power over Ethernet (POE) device capable of supplying power uninterruptedly |
| CN104520636A (en) * | 2012-07-09 | 2015-04-15 | 全球绿色照明有限公司 | Light fixture having power over ethernet power sourcing equipment |
| CN104520636B (en) * | 2012-07-09 | 2018-01-26 | 全球绿色照明有限公司 | The lighting apparatus of electric supply installation with POE |
| CN103023663A (en) * | 2012-12-07 | 2013-04-03 | 中兴通讯股份有限公司 | Router power supply device and router power supply device method |
| CN108709583A (en) * | 2017-11-30 | 2018-10-26 | 江苏苏威尔科技有限公司 | Portable wireless or the data collector and its working method of USB connections |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |