CN103346589A - Stored energy power supply design and using method for optical network unit - Google Patents
Stored energy power supply design and using method for optical network unit Download PDFInfo
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- CN103346589A CN103346589A CN 201310218499 CN201310218499A CN103346589A CN 103346589 A CN103346589 A CN 103346589A CN 201310218499 CN201310218499 CN 201310218499 CN 201310218499 A CN201310218499 A CN 201310218499A CN 103346589 A CN103346589 A CN 103346589A
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Abstract
The invention relates to stored energy power supply design and a using method for an optical network unit. The stored energy power supply design and the using method for the optical network unit comprise design of charging batteries, design requirements of a power management module and an on-spot using method. In the prior art, due to the fact that a fiber-to-the-home optical network unit device does not have an independent power supply device, therefore, the fiber-to-the-home ONU device cannot work under the situation of power failure of city power, phone calls cannot be got through, defects exist in fiber-to-the-home equipment, and quality in using the optical fiber broadband of vast users is reduced. According to the stored energy power supply design and the using method for the optical network unit, the problem that the ONU device cannot continue to work in the situation of power failure of the city power is solved, and electricity is independently supplied for the ONU device for no less than 5 hours.
Description
Technical field
The invention belongs to the electronic information sciemtifec and technical sphere, relate to a kind of principle of the accumulation power supply design and use method for optical network unit.
Background technology
(1) EPON (Ethernet passive optical network, Ethernet Passive Optical Network, EPON)
Ethernet passive optical network be a kind of with optical fiber as transmission medium, be the network of upper strata host-host protocol with Ethernet protocol.It is made up of four parts: and optical line terminal (Optical Line Terminal, OLT), optical network unit (Optical Network Unit, ONU), passive optical splitters (Passive Optical Splitter, POS), optical fiber (Optical Line).Optical line terminal OLT finishes exchanges data and the control that respectively inserts between the ONU; Optical network unit ONU is finished the switching with subscriber equipment, and optical splitter is finished the shunt of light path; Optical fiber is the passage of transfer of data; Ethernet passive optical network is a kind of novel broadband access technology, and its purposes is to realize that fiber-to-the-home broadband internet inserts.Compare with Ethernet switch, it has following characteristics:
-transmission rate height: directly link subscriber equipment by optical fiber, can realize reaching the bandwidth of 1.25Gbps.
-adopting time division multiplexing mechanism: control unit is carried out mechanism according to time interval distribute data transmitting rights to the subscriber equipment that inserts.This mechanism has been avoided media access control method-CSMA/CD (Carrier Sense Multiple Access with Collision Detection, collision detection carrier sense multipoint access) of adopting in the Ethernet.This is a kind of uncertainty or the randomness communication mode of Ethernet regulation.Its basic functional principle is: when certain node will send message, at first monitor network, as network busy, then wait until till its free time, otherwise will send immediately, and continue to monitor network simultaneously; If it is idle and when sending message simultaneously that two or more nodes listen to network, will bump, node stops to send immediately simultaneously, and resends after waiting for time of one section random-length.After 16 collisions, controller will stop to send and repaying failure information to the node microprocessor.When network load was higher, this collision into subject matter that exists on the Ethernet because it has greatly influenced data throughout and the transmission delay of Ethernet, and caused the decline of Ethernet actual performance.Because after a series of collisions, message may be lost, so communicating by letter and can't be protected between node and the node.This CSMA/CD medium access mechanism of Ethernet has caused " uncertainty " of network transmission delay and communication response.After adopting time-division multiplex technology, network just can be avoided information collision according to interval distribute data transmission time predetermined time.
-long transmission distance: because optical fiber adopts passive mode of operation, transmission range can reach 20 kilometers.
-having QOS mechanism: can control according to the configuration preference level that requires of user side.
(2) GPON (gigabit passive optical network, Gigabit-Capable PON)
Advantages such as GPON is that the new generation broadband EPON of a kind of EPON of being different from inserts standard, has high bandwidth, high efficiency, large coverage, and user interface is abundant.Each telecom operators such as China Telecom just adopt the GPON standard in follow-up Access Network at present, comprise that the product of the integration of three networks also adopts the GPON standard.
(3) integration of three networks
The integration of three networks refers to that telecommunications network, broadcasting and television network, the Internet are being blended in consolidated network in broadband communication network, digital tv network, Next Generation Internet evolution process, three macroreticulars are by technological transformation, its technical functionality reaches unanimity, it is identical that the scope of business is tending towards, network interconnection intercommunication, resource-sharing can provide multiple services such as voice, data and radio and television for the user.Network using Fibre Optical Communication Technology after the fusion realizes wideband transmit information.
Summary of the invention
A defective is arranged in present EPON and the GPON product, be exactly that the user that registers one's residence of optical fiber can't get through when having a power failure, this is because leading portion control appliance and user terminal all do not dispose automatic power supply device, the present invention has designed a kind of electric supply installation that has energy-storage battery, when having a power failure, can realize uninterruptedly being the ONU power supply, make the user under power-off condition, also can continue to get through and surf the Net more than 5 hours, and designed the using method of accumulation power supply in optical network system.The optical fiber that the present invention is fit to be applied to EPON, GPON and " integration of three networks " system of registering one's residence.
Beneficial effect of the present invention is: before the present invention, the device of optical network unit that optical fiber is registered one's residence (ONU) is not owing to there is independently electric supply installation, under the situation of mains failure, just can't work, also can't get through, this is a kind of defective to the optical fiber equipment of registering one's residence, and has reduced the quality that users use fiber broadband.The invention solves the problem that optical network unit (ONU) works under the situation of mains failure, guarantee to be no less than 5 hours to ONU equipment is independently-powered.Application of the present invention will bring substantial benefit for the user that vast optical fiber is registered one's residence, and also clear away last technology barrier for optical fiber enters huge numbers of families, effectively advance the process of " light advances copper and moves back ".
Description of drawings
1. accompanying drawing 1, and optical fiber network system is by forming with the lower part:
(1) front-end processor OLT: first line of a couplet telecom operators and cable television operators, second line of a couplet user terminal ONU realizes converging and transferring of data.
(2) wave multiplexer: realizing that cable TV fiber optic wavelength 1550nm and telecommunication optical fiber wavelength 1390nm/1410nm synthesize at an optical fiber transmits.
(3) uninterrupted power supply UPS: to the power supply supply of OLT and wave multiplexer, index is when being implemented in power failure: 220V, and 5-20kVA.
(4) user terminal ONU: user's online, phone, TV etc.
(5) accumulation power supply: the present invention's design, voltage 12V, electric current 1 are to 3A, and the continued power time is not less than 5 hours.
2. accompanying drawing 2, the on-the-spot connection layout that uses.
Embodiment
The present invention has designed a kind of accumulation power supply, for the band optical fiber equipment ONU that registers one's residence provides uninterruptedly, can continue to get through and surf the Net under the situation about having a power failure in the user residential quarter, and design the method for on-the-spot use.The present invention is divided into three parts:
1. rechargeable battery set
Because lithium ion battery has characteristics such as high-energy-density, high internal resistance, high cell voltage, high cycle-index, low self-discharge, the design adopts three blocks of square 4V lithium battery plates, or rechargeable battery set of six pitch circle cylindricality 2V lithium battery group connection in series-parallel compositions, the direct-current working volts value is 12 volts, working current value is 1.5 amperes to 3 amperes, and the rechargeable battery capacity is greater than 5000mAH.
2. power management module
The function of battery management module is that the charging of whole battery group and discharge are controlled, and plays the effect of safety guarantee.Its concrete function has individual:
(1) management of charging and discharging
Management of charging and discharging is exactly that charging and discharging currents, voltage to battery pack is controlled, and makes in its scope that is operated in setting.This than higher, in use answers strictness to be avoided occurring overcharging, crossing and emit phenomenon to the requirement of protective circuit, and discharging current is also unsuitable excessive.In a charge cycle, lithium ion battery needed to detect voltage and the temperature of battery before the charging beginning, judge whether and can fill.If cell voltage or temperature exceed the scope that manufacturer allows, then forbid charging.Be at battery under the situation of deep discharge, necessarily require charger to have the preliminary filling process, make battery satisfy the condition of quick charge; Charger carries out constant current charge to battery, and cell voltage slowly rises; In case reaching the final voltage that sets, cell voltage just stops charging.
(2) overload protection
In order to protect the safety of lithium ion battery, when battery carries out discharging action, when cell voltage is lower than over voltage, should close battery discharge, avoid the battery over-discharge phenomenon to take place.Excessive when discharging current, protective circuit should be closed battery discharge, carries out the overdischarge current protecting function.The size of protective current can be set according to the size of load.Protective circuit can not the misoperation because load needs the big electric current of short time, and protective circuit must provide different overdischarge current protection time of delay, improves the stability of work.
3. method for designing is used at the scene
The present invention has designed the optical fiber network system of a cover for EPON, GPON and " integration of three networks " technology composition, and ONU uses accumulation power supply to realize the method for non-stop run under power-off condition, and its method of attachment as shown in Figures 1 and 2.
Claims (3)
- A kind of accumulation power supply design and use method for optical network unit is characterized in that, comprising:1. rechargeable battery set design: three square 4 volts of chargeable lithium cell pieces, perhaps 2 volts of chargeable lithium cells of six pitch circle column types are composed in series battery pack, and the direct-current working volts value is 12 volts, working current value is 1.5 amperes to 3 amperes, and the rechargeable battery capacity is greater than 5000mAH.
- 2. power management module: the function of battery management module is that the charging of whole battery group and discharge are controlled, and plays the effect of safety guarantee.
- 3. method for designing is used at the scene: the present invention has designed the optical fiber network system of a cover for EPON, GPON and " integration of three networks " technology composition, and ONU use accumulation power supply is realized the method for non-stop run under power-off condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310218499 CN103346589A (en) | 2013-06-05 | 2013-06-05 | Stored energy power supply design and using method for optical network unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310218499 CN103346589A (en) | 2013-06-05 | 2013-06-05 | Stored energy power supply design and using method for optical network unit |
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| CN103346589A true CN103346589A (en) | 2013-10-09 |
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| CN 201310218499 Pending CN103346589A (en) | 2013-06-05 | 2013-06-05 | Stored energy power supply design and using method for optical network unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354472A (en) * | 2012-09-21 | 2013-10-16 | 福州伟兴通信技术有限公司 | Optical network unit (ONU) equipment with built-in lithium battery and assembling method thereof |
| CN111123139A (en) * | 2018-10-30 | 2020-05-08 | 中国移动通信集团广东有限公司 | Power supply guarantee system, early warning device and guarantee and early warning method of optical line terminal |
-
2013
- 2013-06-05 CN CN 201310218499 patent/CN103346589A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354472A (en) * | 2012-09-21 | 2013-10-16 | 福州伟兴通信技术有限公司 | Optical network unit (ONU) equipment with built-in lithium battery and assembling method thereof |
| CN103354472B (en) * | 2012-09-21 | 2016-04-27 | 福州伟兴通信技术有限公司 | A kind of built-in lithium battery ONU equipment and assembly method thereof |
| CN111123139A (en) * | 2018-10-30 | 2020-05-08 | 中国移动通信集团广东有限公司 | Power supply guarantee system, early warning device and guarantee and early warning method of optical line terminal |
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Application publication date: 20131009 |