CN203466837U - Network camera power supply device - Google Patents
Network camera power supply device Download PDFInfo
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- CN203466837U CN203466837U CN201320573272.1U CN201320573272U CN203466837U CN 203466837 U CN203466837 U CN 203466837U CN 201320573272 U CN201320573272 U CN 201320573272U CN 203466837 U CN203466837 U CN 203466837U
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Abstract
The utility model relates to a network camera power supply device in which a direct current provided by the power supply end is transmitted to the network camera receiving end by combining with a network cable. The power supply device comprises a PSE power supply end, an isolation transformer, an Ethernet interface and a control circuit. The control circuit comprises a PD controller, a PD control switch, an alternating-current transformer and an AC/DC conversion circuit. The device adopts two power supply modes, wherein one power supply mode is that data is modulated onto a direct-current power source through the power supply end, the data is separated through the isolation transformer and provided for the Ethernet interface, and after the direct-current power source is used as the input of the PD controller, the PD controller can be used to output a stable direct-current power source to supply power; and the other power supply mode is that a free line in the Ethernet cable is used to transmit the direct-current power source to supply power. The network camera powered by using the power supply device of the utility model does not need to be connected with a power source additionally, and a network cable is adopted, so that the transmitted signal will not be disturbed, and two power supply modes can be provided, so advantages of safety and reliability can be realized, and the utilization of users can be facilitated greatly.
Description
Technical field
The utility model relates to a kind of electric supply installation of video camera, is specifically related to a kind of electric supply installation of web camera.
Background technology
Along with the day by day universal and development of field of video monitoring, the particularly arriving in high definition epoch, web camera has obtained development at full speed.Meanwhile, along with the growing demand of people, web camera also constantly improves and upgrades in technology and aspect of performance, and new technology is constantly applied in fast development.Web camera generally adopts embedded real-time operating system, and equipment needed thereby is simple, and the transmission of image realizes by complex wiring network, and the reliability of system is quite high.
General web camera, except needs come transmission video signal by netting twine, also must round-the-clockly provide enough electric power for it.And in reality construction, often there will be because stable power supply cannot be provided, and have to redesign the situation of the infield of camera.Thus, redesign infield volume and may cause occurring monitoring dead angle, make monitoring lose meaning.
Video camera installation site non-transformer or installation position are equipped with power supply but mains lighting supply, and the situation of round-the-clock power supply cannot be provided, and such situation is much, and the focus of problem is the power supply of web camera.In prior art, the video camera of the grid line that relies on power supply and transmission data, only need a common netting twine, use POE technology, utilize existing standard ethernet netting twine in transmission of data signals, can also from netting twine, obtain DC power supply.
But, video camera is arranged on outdoor, may be in severe bad border, therefore in the video camera of installing after the critical component damage as separated transmission data-signal and DC power supply, whole parts can not mask data signal and DC power supply, therefore system can not continue to complete signal transmission and the function of supplying power of web camera simultaneously, cause the inconvenience of power supply.
Utility model content
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of electric supply installation of web camera, has the mode of two kinds of power supplies.
The technical scheme that the utility model adopts is: a kind of electric supply installation of web camera, comprising: PSE feeder ear, by one end of Power over Ethernet; Isolating transformer, for the direct current of exporting through PSE feeder ear is separated with signal transmission, the first output of above-mentioned isolating transformer connects following Ethernet interface, and the second output of above-mentioned isolating transformer connects control circuit; Ethernet interface, connects the idle line in the Ethernet cable of the isolated signal transmission of above-mentioned isolating transformer; Control circuit, comprise PD controller, by PD control switch, AC transformer and the ac-dc converter circuit of converting direct-current power into alternating-current power, the first input end of above-mentioned PD controller connects above-mentioned PSE feeder ear, the second input of above-mentioned PD controller connects described isolating transformer, the first output of above-mentioned PD controller connects above-mentioned PD control switch, the second output of above-mentioned PD controller connects above-mentioned AC transformer, above-mentioned AC transformer connects above-mentioned ac-dc converter circuit, and the output of above-mentioned ac-dc converter circuit connects receiving end web camera.
Preferably, between above-mentioned PSE feeder ear and above-mentioned control circuit, be also provided with and prevent that feeder ear power positive cathode from connecing first protective circuit of burning on the contrary circuit.
Preferably, between above-mentioned isolating transformer and above-mentioned control circuit, be also provided with and prevent that feeder ear power positive cathode from connecing second protective circuit of burning on the contrary circuit.
Preferably, above-mentioned PD controller also comprises AC transformer.
Preferably, above-mentioned PD control circuit also comprises for by the PD control switch power circuit of converting direct-current power into alternating-current power.
Preferably, above-mentioned control circuit is DC-DC change-over circuit.
Preferably, above-mentioned protective circuit is bridge protection circuit.
Preferably, above-mentioned isolating transformer adopts MS1023NL chip.
Preferably, above-mentioned control circuit comprises NCP1038 chip.
Preferably, 2 pin outer meeting resistances of above-mentioned NCP1083 chip are controlled power output size, and 15 pins are controlled the break-make of described AC transformer and carried out output voltage.
Preferably, above-mentioned PD control switch is for adopting the electronic switch of SI4848 chip, by what control above-mentioned PD control switch, cut-offs generation alternating current.
Adopt the beneficial effect of the technical program to be: the utility model utilizes the direct current that the feeder ear of Power over Ethernet provides in conjunction with grid line, to transfer to the receiving end of web camera, comprise PSE feeder ear, isolating transformer, Ethernet interface and control circuit, control circuit comprises again PD controller, PD control switch, AC transformer and ac-dc converter circuit.This device has two kinds of supply power modes, a kind of is to modulate data in DC power supply by PSE, after isolating transformer, data separating is offered to Ethernet interface, and using DC power supply after the input of PD controller, the DC power supply of PD controller energy stable output; Another kind is to use the idle line transmission DC power supply not being used in Ethernet cable.Adopt web camera of the present utility model not need separately to connect power supply, only need a grid line, and signal do not receive interference, and can adopt power supply in two ways, safe and reliable, the user's that greatly facilitates use.
accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model embodiment 1;
Fig. 2 is the structural representation of the isolating transformer of the utility model embodiment 1;
Fig. 3 is the structure chart of the PD controller of the utility model embodiment 1;
Fig. 4 is the circuit diagram of the control circuit of the utility model embodiment 1.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiment of the utility model in detail.
Embodiment
As shown in Figures 1 to 4, the electric supply installation of web camera, comprise PSE feeder ear, isolating transformer, Ethernet interface, control circuit, wherein control circuit comprise PD controller, by PD control switch, AC transformer and the ac-dc converter circuit of converting direct-current power into alternating-current power.The present embodiment can be realized the powering mode of two kinds of routes.
Wherein, article one, route module is: PSE feeder ear by data signal modulation to direct current, on transmission data heart yearn used, transmit direct current simultaneously, and connect according to this isolating transformer and Ethernet interface, isolating transformer separates data-signal and direct current, isolating transformer adopts MS1023NL chip, isolated data-signal is sent to Ethernet interface, by Ethernet interface, be directly inputted to the mainboard mixed-media network modules mixed-media of web camera, isolated direct current is fed through PD controller, PD controller adopts NCP1083 chip, through PD controller, PD control switch, alternating current depressor turns the 12V direct current of stable output after DC circuit and powers to web camera with exchanging, wherein PD control switch is for adopting the electronic switch of SI4848 chip.
Second route module is: PSE feeder ear directly connects PD controller, PD control switch, AC transformer and the ac-dc converter circuit of NCP1083 chip according to this, with the dead pair not being used in Ethernet cable, transmit direct current, the direct voltage of last stable output is powered to web camera, PSE is directly connected with PD controller logic, the 2 pin outer meeting resistances of NCP1083 are controlled its power output size, and 15 pins are controlled the break-make of POE power transformer and carried out output voltage.
This device is integrated in article one line module and second line module in a module, is convenient for changing and safeguards, non-POE web camera only need increase this module and just have POE function of supplying power.
Jiang Liangzhong supply line is integrated in a module, comprise PSE feeder ear, by one end of Power over Ethernet, the first output of PSE feeder ear connects isolating transformer, for the direct current of PSE feeder ear input is separated with signal transmission, the first output of isolating transformer connects following for transmitting the Ethernet interface through the idle line of the Ethernet cable of the isolated signal transmission of isolating transformer, and the second output of isolating transformer connects control circuit; Control circuit, comprise PD controller, by PD control switch, AC transformer and the ac-dc converter circuit of converting direct-current power into alternating-current power, the first input end of PD controller connects PSE feeder ear, the second input of PD controller connects isolating transformer, the first output of PD controller connects PD control switch, the second output connects AC transformer, and AC transformer connects ac-dc converter circuit, and the output of ac-dc converter circuit connects PD receiving end web camera.
The output of the feeder ear of PSE connects respectively 9 pins of isolating transformer, 10 pins, 11 pins, 13 pins, 14 pins and 15 pins, through 1 pin of the output of isolating transformer MS1023NL chip, 3 pins, 6 pins are connected Ethernet interface with 8 pin outputs, and the pin 5 of isolating transformer and pin 6 merge, and the pin 7 of isolating transformer and pin 8 merge, and the pin of two merging of isolating transformer connects respectively the first bridge protection circuit, the pin 10 of isolating transformer, be connected respectively the second bridge protection circuit with pin 15, the output of two bridge protection circuits is connected to pin 1 and the pin 6 of NCP1038 chip jointly, 8, 10, the pin 16 of 21, NCP1038 chip connects AC transformer, 17, 18 pins merge and connect photoelectrical coupler transistor collector, and 15 pins of NCP1038 chip connect the pin 4 of PD control switch, 12 pin outer meeting resistances of NCP1038 chip connect the pin 1 of PD control switch, 2, 3, the positive terminal of the middle diode of photoelectrical coupler connects interchange and turns DC circuit.
The corresponding PSE feeder ear of the utility model is supported Ethernet switch, router, hub or other network switching equipment of POE function.
When arranging in one network PSE feeder ear, POE web camera power supply step is as follows:
1, detect: at the beginning, PSE equipment is at the very little voltage of port output, until it detects the receiving end equipment of supporting IEEE 802.3af standard that is connected to of cable terminations.
2, PD end device class: after receiving end equipment PD being detected, PSE equipment may be classified for PD equipment, and assesses the required power loss of this PD equipment.
3, start power supply: within the starting period of a configurable time (being generally less than 15 μ s), PSE equipment starts the power supply from low-voltage to PD equipment, until the required DC power supply of PD is provided.
4, power supply: for PD equipment provides reliable and stable direct current, meet PD equipment and do not cross power consumption.
5, power-off: if PD equipment is when network disconnects, PSE rapidly (generally within 300～400ms) stops as the power supply of PD equipment.And whether duplicate detection process connects PD equipment to detect the terminal of cable.
All the other are identical with embodiment 1; difference is; between isolating transformer and control circuit, also comprise bridge protection circuit; isolated direct current is first through the first bridge protection circuit; and then send into PD controller, adopt this protective circuit can effectively prevent that feeder ear power positive cathode from connecing and burn on the contrary circuit.
All the other are identical with embodiment 2; difference is; between PSE feeder ear and control circuit, be also provided with bridge protection circuit; the output of PSE feeder ear first connects the second bridge protection circuit; and then connect PD controller, adopt this protective circuit can effectively prevent that feeder ear power positive cathode from connecing and burn on the contrary circuit.
All the other are identical with embodiment 3, and difference is, control circuit also comprises photoelectrical coupler, and photoelectrical coupler can effectively prevent the interference of the generation between circuit signal.
All the other are identical with embodiment 1, difference is, control circuit is DC-DC circuit, exactly the higher direct current of input converted to lower galvanic current and presses and export to web camera power supply, adopt this DC-DC circuit, can to video camera, power by the definite direct current of stable output.
The utility model utilizes the direct current that the feeder ear of Power over Ethernet provides in conjunction with grid line, to transfer to the receiving end of web camera, comprise PSE feeder ear, isolating transformer, Ethernet interface and control circuit, control circuit comprises again PD controller, PD control switch, AC transformer and ac-dc converter circuit.There are two kinds of supply power modes, a kind of is to modulate data in DC power supply by PSE, after isolating transformer, data separating is offered to Ethernet interface, and using DC power supply after the input of PD controller, the DC power supply of PD controller energy stable output; Another kind is to use the idle line transmission DC power supply not being used in Ethernet cable.Adopt web camera of the present utility model not need separately to connect power supply, only need a grid line, and signal do not receive interference, and can adopt power supply in two ways, safe and reliable, the user's that greatly facilitates use.
Above-described is only preferred implementation of the present utility model; it should be pointed out that for the person of ordinary skill of the art, do not departing under the prerequisite of the utility model creation design; can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (10)
1. an electric supply installation for web camera, is characterized in that, comprising:
PSE feeder ear, by one end of Power over Ethernet;
Isolating transformer, for the direct current of exporting through described PSE feeder ear is separated with signal transmission, the first output of described isolating transformer connects following Ethernet interface, and the second output of described isolating transformer connects control circuit;
Ethernet interface, connects the idle line in the Ethernet cable of the isolated signal transmission of described isolating transformer;
Control circuit, comprise PD controller, by PD control switch, AC transformer and the ac-dc converter circuit of converting direct-current power into alternating-current power, the first input end of described PD controller connects described PSE feeder ear, the second input of described PD controller connects described isolating transformer, the first output of described PD controller connects described PD control switch, the second output of described PD controller connects described AC transformer, described AC transformer connects described ac-dc converter circuit, and the output of described ac-dc converter circuit connects receiving end web camera.
2. the electric supply installation of web camera according to claim 1, is characterized in that, is also provided with and prevents that feeder ear power positive cathode from connecing first protective circuit of burning on the contrary circuit between described PSE feeder ear and described control circuit.
3. the electric supply installation of web camera according to claim 1, is characterized in that, is also provided with and prevents that feeder ear power positive cathode from connecing second protective circuit of burning on the contrary circuit between described isolating transformer and described control circuit.
4. the electric supply installation of web camera according to claim 1, is characterized in that, described control circuit is also provided with photoelectrical coupler.
5. the electric supply installation of web camera according to claim 1, is characterized in that, described control circuit is DC-DC change-over circuit.
6. according to the electric supply installation of the web camera described in claim 2 or 3, it is characterized in that, described protective circuit is bridge protection circuit.
7. the electric supply installation of web camera according to claim 1, is characterized in that, described isolating transformer adopts MS1023NL chip.
8. the electric supply installation of web camera according to claim 1, is characterized in that, described PD controller adopts NCP1038 chip.
9. the electric supply installation of web camera according to claim 8, is characterized in that, 2 pin outer meeting resistances of described NCP1083 chip are controlled power output size, and 15 pins are controlled the break-make of described AC transformer and carried out output voltage.
10. the electric supply installation of web camera according to claim 1, is characterized in that, described PD control switch is for adopting the electronic switch of SI4848 chip, by what control described PD control switch, cut-offs generation alternating current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573272.1U CN203466837U (en) | 2013-09-17 | 2013-09-17 | Network camera power supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573272.1U CN203466837U (en) | 2013-09-17 | 2013-09-17 | Network camera power supply device |
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| Publication Number | Publication Date |
|---|---|
| CN203466837U true CN203466837U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320573272.1U Expired - Fee Related CN203466837U (en) | 2013-09-17 | 2013-09-17 | Network camera power supply device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017016314A1 (en) * | 2015-07-29 | 2017-02-02 | 杭州海康威视数字技术股份有限公司 | Power over ethernet (poe) power sourcing module and cable configured with poe power sourcing module |
| CN108683512A (en) * | 2018-05-25 | 2018-10-19 | 英业达科技有限公司 | Telecommunication transmitting device, telecommunication transmission method and Intelligent lamp system |
| CN109257533A (en) * | 2018-03-15 | 2019-01-22 | 北京筑梦园科技有限公司 | A kind of networking power supply unit and camera device for camera |
| CN111722029A (en) * | 2019-03-21 | 2020-09-29 | 杭州海康威视数字技术股份有限公司 | Detection device and method for power supply mode of network camera and network camera |
| CN111901130A (en) * | 2019-05-05 | 2020-11-06 | 杭州海康威视数字技术股份有限公司 | Ethernet power supply equipment interface circuit and Ethernet power supply equipment |
-
2013
- 2013-09-17 CN CN201320573272.1U patent/CN203466837U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017016314A1 (en) * | 2015-07-29 | 2017-02-02 | 杭州海康威视数字技术股份有限公司 | Power over ethernet (poe) power sourcing module and cable configured with poe power sourcing module |
| CN109257533A (en) * | 2018-03-15 | 2019-01-22 | 北京筑梦园科技有限公司 | A kind of networking power supply unit and camera device for camera |
| CN109257533B (en) * | 2018-03-15 | 2024-03-26 | 北京筑梦园科技有限公司 | Networking power supply device for camera and camera equipment |
| CN108683512A (en) * | 2018-05-25 | 2018-10-19 | 英业达科技有限公司 | Telecommunication transmitting device, telecommunication transmission method and Intelligent lamp system |
| CN111722029A (en) * | 2019-03-21 | 2020-09-29 | 杭州海康威视数字技术股份有限公司 | Detection device and method for power supply mode of network camera and network camera |
| CN111722029B (en) * | 2019-03-21 | 2023-03-07 | 杭州海康威视数字技术股份有限公司 | Detection device and method for power supply mode of network camera and network camera |
| CN111901130A (en) * | 2019-05-05 | 2020-11-06 | 杭州海康威视数字技术股份有限公司 | Ethernet power supply equipment interface circuit and Ethernet power supply equipment |
| CN111901130B (en) * | 2019-05-05 | 2022-08-05 | 杭州海康威视数字技术股份有限公司 | Ethernet power supply equipment interface circuit and Ethernet power supply equipment |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20200917 |
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| CF01 | Termination of patent right due to non-payment of annual fee |