CN102314765A - Plastic optical fiber network electricity checks meter system - Google Patents
Plastic optical fiber network electricity checks meter system Download PDFInfo
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- CN102314765A CN102314765A CN201110241140A CN201110241140A CN102314765A CN 102314765 A CN102314765 A CN 102314765A CN 201110241140 A CN201110241140 A CN 201110241140A CN 201110241140 A CN201110241140 A CN 201110241140A CN 102314765 A CN102314765 A CN 102314765A
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Abstract
The invention provides a plastic optical fiber network electricity checks meter system, and belongs to the field of power line information transmission. The checks meter system provided by the invention has strong anti-electromagnetic interference and nuclear radiation resistance as well as reliable performance; collected data has strong real-time performance, and low cost and high speed transmission of data are realized; the plastic optical fiber network electricity checks meter system is composed of electricity meters, a meter reading module, plastic optical fiber, a plastic optical fiber network switch and a data processing center; The signal flow direction of the checks meter system is as follows: an optic transmitter of the meter reading module converts an electricity meter signal to a network optical signal; the optical signal is coupled to the plastic optical fiber; an optical receiver of the meter reading module receives signals and reduces the optical signal to a network electrical signal; the plastic optical fiber network switch is used for data processing; and the data processing center is used to process data so as to complete the whole process of meter reading. The checks meter system provided by the invention has excellent anti-electromagnetic interference performance, strong security, high sensitivity and small volume, is simple to prepare, requires low cost, and has waterproof and moistureproof properties as well as long service life.
Description
Technical field
The invention belongs to transmission of Information field on the line of electric force, specifically relate to a kind of plastic optical fiber network power meter reading system.
Background technology
The existing power remote automatic meter reading system all adopts twin-stage to report mechanism, the first order be ammeter to concentrator, transmission mode is RS485 and 220V power carrier; The second level be concentrator to the electrical management center, transmission mode is wired local network, broadband metropolitan area network, GPRS, wireless communication networks and 10kV power line carrier net.The bipolar mechanism that reports adopts concentrator to connect between ammeter and data processing centre (DPC), the volume of the kilowatt meter reading-out system of increase and manufacturing cost, data read and control the influence that receives concentrator.
Above-mentioned twin-stage reports mechanism except that power line carrier, and all the other transmission modes all need be rented the external information net, and operation cost is higher.But power line carrier poor anti jamming capability, carrier meter reading system receive the electromagnetic interference (EMI) of equipment easily, embody the unstable problem of carrier meter reading system in peak of power consumption.And a lot of companies can't solve the communication capacity of carrier meter reading system.
Characteristics such as that optical fiber communication has is safe and reliable, confidentiality height; But be used for electric power EPON (Ethernet Passive Optical Network at present; Ethernet passive optical network; Be a kind of novel Optical Access Network technology) shortcoming such as the communication module used of checking meter is on the high side, power consumption is big, and to improve and explore new pattern necessary in the face of the optical fiber EPON technology of electricity meter-reading.
Research about power meter reading system or method at present mainly contains:
Application number is that CN200810017696.3, denomination of invention are the patent of invention of " a kind of electric power carrier wave remote meter reading method ", and disclosed technical scheme is the meter register method of power carrier, at first with the power consumption that reads, encodes; With the information behind the coding, modulating is that spread spectrum, electric current amplify, and ternary 200 μ s pulse-position modulation are adopted in the information modulation, promptly with leading 200 μ s, hysteresis 200 μ s with do not modulate three kinds of modes and make up and represent different information; Information after the modulation is sent on the line of electric force through coupling unit; At the other end of line of electric force, information is pre-service, despreading through coupling unit, ternary 200 μ s pulse position demodulation then, and power consumption is read in decoding.The technical matters of its solution is to have improved the bit rate and the transmission range of electric power carrier wave remote meter reading, overcomes the influence of electric load to kilowatt meter reading-out system.But this patent is not considered whole kilowatt meter reading-out system anti-electromagnetic interference capability.
Application number is that CN200710036998.0, denomination of invention are the patent of invention of " a kind of remote intelligent power meter reading system that is used for broadband network communication "; Line of electric force high-speed wideband communication system and remote centralized meter-reading system are combined, realize online and two functions of electric meters collecting simultaneously.Its technical scheme is: electrification live width band data communication concentrator substitutes concentrator and the collector in the remote centralized meter-reading system; The information acquiring communication mode of ammeter is incorporated in the power line communication mode, adopts a communication line to realize power line communications communication and ammeter remote data acquisition.This technology adopts the high-speed wideband communication system, and operation cost is higher.
And for example application number is that CN201020569466.0, denomination of invention are the patent of " device for power line carrier communications "; Comprise the communication interface, CPU, amplifying circuit and the coupled circuit that connect successively; The technical matters of its solution is to have reduced the number of users that concentrator is born greatly, and then has reduced the ammeter number of required management and then directly reduced the requirement of transmission range; Because this module has adopted the modulation system of OFDM, the phenomenon that intersymbol interferes with each other can not take place, thereby greatly improve reliability of data transmission.But same problem, this patent are not considered whole kilowatt meter reading-out system anti-electromagnetic interference capability.
This shows; Domestic research at present mainly concentrates on carrier meter reading system; And intelligent grid is remarkable to the increasing demand of kilowatt meter reading-out system at a high speed, reliably and cheaply, therefore, and under the prerequisite that meets State Grid Corporation of China's power consumer power information acquisition system standard and requirement; The power meter reading system of the demand of intelligent grid construction is satisfied in exploitation, has greatly practical value.
Summary of the invention
The object of the invention is to provide a kind of plastic optical fiber network power meter reading system, and the problem of solution is to have improved the anti-electromagnetic interference (EMI) and the anti-nuclear radiation ability of kilowatt meter reading-out system, dependable performance, and real time data acquisition strengthens; Realize the transmission of low cost and data in high speed; This kilowatt meter reading-out system does not have data concentrator, makes system simpler, and is easy to maintenance, and data efficiency improves.
For realizing the foregoing invention purpose, the technical scheme that the present invention takes is:
A kind of plastic optical fiber network power meter reading system, said kilowatt meter reading-out system comprises ammeter, data processing centre (DPC); Its improvements are that said kilowatt meter reading-out system also comprises meter-reading module, plastic optical fiber and the network switch; Said meter-reading module comprises RS232 interface, Ethernet converter, optical transmitter and optical receiver, and the said network switch comprises Ethernet converter, optical transmitter, optical receiver and network exchanging chip.
Another optimal technical scheme of the present invention is: said power meter reading system carries out the signal transmission through said plastic optical fiber, and the signal flow of kilowatt meter reading-out system is to being:
Said meter-reading module is gathered the ammeter signal;
Said meter-reading module is transferred to the said network switch through plastic optical fiber with the ammeter signal;
The said network switch is transferred to data processing centre (DPC) with signal;
The electricity meter-reading process finishes.
Another optimal technical scheme of the present invention is: the signal processing between the said meter-reading module and the said network switch is:
The optical transmitter of said meter-reading module is the network-type light signal with the ammeter conversion of signals, and the network-type light signal is coupled in the plastic optical fiber;
Said network-type light signal is transferred to the optical receiver of the said network switch through plastic optical fiber;
The optical receiver of the said network switch is reduced to the network-type electric signal with the network-type light signal;
The Ethernet converter of the said network switch is the ammeter signal with the network-type electrical signal conversion;
An optimal technical scheme more of the present invention is: said optical transmitter comprises light emitting diode, glass bar and connector.
An optimal technical scheme more of the present invention is: said optical receiver comprises photo-detector, glass bar and connector.
An optimal technical scheme more of the present invention is: the said network switch is connected with network interface through network exchanging chip.
An optimal technical scheme more of the present invention is: it is inner that said meter-reading module is arranged at said ammeter.
An optimal technical scheme more of the present invention is: said ammeter signal comprises the Transistor-Transistor Logic level signal.
POF wherein: (Plastic Optical Fiber) plastic optical fiber, compare with silica fibre with multicomponent glass optical fiber, have major diameter, in light weight, outstanding flexibility and excellent bending property etc., and be easy to processing, cost is low.
Owing to adopted technique scheme, compared with prior art, beneficial effect of the present invention comprises:
Electric system uses POF plastic optical fiber network electricity meter-reading technology to have the incomparable advantage of other system:
Low price, saving copper resource.
The electric noise influence is penetrated, do not had to no electromagnetic wave, and anti-interference ability is extremely strong.
Heavy and light, good toughness, antivibration resistance, durable reliable.
Strong security, safe and reliable.
High bandwidth, at a high speed, high reliability, high-performance.
But need not specific purpose tool, need not melting welding autotomy, tipping.
Waterproof, protection against the tide, antimagnetic, anti-electricity can satisfy the requirement of specific occasion.
After the advantage of plastic optical fiber network power meter reading system also is to adopt the plastic optical fiber kilowatt meter reading-out system to replace carrier meter reading system, will improve the performance of equipment and system in the following aspects:
The anti-electromagnetic interference (EMI) of raising equipment and anti-nuclear radiation ability.
Nothing is crosstalked; Use optical cable to come transmission signals, can not produce between each road signal and crosstalk.
The weight of mitigation system; The weight of the plastic optical fiber of 1500m diameter 1mm is only less than 2kg.
Anti-thunderbolt ability is strong; The optical cable of no metal itself is good insulator, even be exposed to outdoorly, also can not attract the thunder and lightning equipment of breaking.
Fully phase out data concentrator, make system simpler, easy to maintenance, improve data efficiency.
The kilowatt meter reading-out system data read and control real-time.
In addition, plastic optical fiber network power meter reading system of the present invention has special advantages at plastic optical fiber meter-reading module and plastic optical fiber flexible jumper.
Plastic optical fiber network electricity meter-reading module cheaply
Plastic optical fiber network electricity meter-reading module has the fiber optical transceiver of high sensitivity and very low cost.The principle of plastic optical fiber network electricity meter-reading module is foolproof, but when requiring circuit cost extremely low, also to guarantee to have higher receiving sensitivity, high reliability, volume be little.Native system has been realized transmitting terminal transmission-10dBm at present, and the receiving end receiving sensitivity is-40dBm (the 10E-9 bit error rate).
The plastic optical fiber flexible jumper
The gordian technique of plastic optical fiber flexible jumper is to make simply, cost is low, can use simple tools such as clamp pincers and Electrotechnic blade, accomplishes the assembling of plastic optical fiber flexible jumper loose mail easily at the scene.Its junction loss is less than 1dB.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further specified.
Fig. 1 is a plastic optical fiber network power meter reading system one-piece construction synoptic diagram;
Fig. 2 is a plasticity fiber optic, light-delivery device synoptic diagram;
Fig. 3 is a plasticity fiber optic, light receiver synoptic diagram;
Fig. 4 is a plastic optical fiber transceiver module synoptic diagram;
Fig. 5 is a plastic optical fiber network switch synoptic diagram;
Reference numeral:
POF-Plastic Optical Fiber, plastic optical fiber;
RS232-asynchronous transmission standard interface;
TTL-Transistor Transistor Logic, the transistor-transistor logic level.
Embodiment
Below in conjunction with instance the present invention is carried out detailed explanation.
Fig. 1 is a network meter reading system one-piece construction synoptic diagram, and POF plastic optical fiber network power meter reading system mainly is made up of intelligent electric meter, plastic optical fiber transceiver module, plastic optical fiber, plastic optical fiber network switch, data processing centre (DPC).The plastic optical fiber transceiver module is arranged in the ammeter, and transceiver module comprises RS232 interface, Ethernet conversion chip, plastic optical fiber optical transmitter, plastic optical fiber optical receiver and passive component, and is as shown in Figure 4.
The optical transmitter of transceiver module is converted into the network-type light signal with ammeter RS232 signal, and the network-type light signal is coupled among the plastic optical fiber POF, is transferred to network plastic optical fiber optical receiver through plastic optical fiber, and optical receiver is reduced to the network electric signal with light signal.Carry out exchanges data through the plastic optical fiber network switch, get into data processing centre (DPC) again and handle, accomplish the overall process of POF plastic optical fiber network electricity meter-reading.
POF plastic optical fiber intelligent power meter reading module is core in the plastic optical fiber kilowatt meter reading-out system, and POF plastic optical fiber intelligent power meter reading modular structure is simple, power consumption is little, cost is low.Adopt advanced power system telecommunications technology and special chip and design based on the meter-reading module of POF plastic optical fiber network; Embedded complete light emitting diode meets communication protocol; High-performance, low-power consumption provides the POF plastic optical fiber intelligent power meter reading module of high performance-price ratio for the accurate concentrator of state's network mark.
Power meter reading system of the present invention replaces traditional power meter reading system fully, and is fit to very much the guiding theory that many nets merge, and monolithic ammeter cost promotes to some extent, but the overall application relative price is more reasonable.The network electric power kilowatt meter reading-out system does not have data concentrator, depends on network fully so data read and control, and real-time is very strong.
Fig. 2 is the optical transmitter structural representation of meter-reading module, and light emitting diode (LED) is that the high-brightness surface that common display is used mounts light emitting diode, and drive current is less than 20mA, centre wavelength 650nm (infrared light).Why choosing the light emitting diode of 650nm, be because the light emitting diode of this wavelength is very cheap, and in the 650nm wavelength, the loss value of plastic optical fiber is relatively low.The light-emitting diode chip for backlight unit size Selection is about 1.0mm * 1.0mm, and is suitable with the diameter of plastic optical fiber, easily light signal is coupled in the plastic optical fiber.
The Transistor-Transistor Logic level signal of ammeter input is carried out the modulation of ethernet signal conversion carrying out again network, and it is luminous to convert the Ethernet level signal to be more suitable for the plastic optical fiber transmission ethernet signal driving LED.The light signal of light emitting diode (LED) output directly is coupled into the glass bar that diameter is 1.0mm, through glass bar, is coupled in the plastic optical fiber that diameter is 1.0mm again.
Fig. 3 is a meter-reading module optical receiver structural representation, and photo-detector detects light signal and produces induction current, after the amplification module two-stage is amplified, is input to the Ethernet demodulation module and carries out demodulation.The signal that demodulates still contains high frequency interference, after filter module carries out filtering, is adjudicated by judging module again, can be reduced into the ethernet signal of input.
Fig. 4 is a plastic optical fiber meter-reading module synoptic diagram, and meter-reading module comprises RS-232-Ethernet converter, optical transmitter and optical receiver.Optical transmitter is converted into the network-type light signal with ammeter RS232 signal, and light signal is coupled in the plastic optical fiber, is transferred to network plastic optical fiber receiver through plastic optical fiber, and optical receiver is reduced to the network electric signal with light signal.
Fig. 5 is a plastic optical fiber network switch synoptic diagram, and the plastic optical fiber network switch mainly comprises plastic optical fiber transceiver, Ethernet converter, network exchanging chip.The plastic optical fiber transceiver is mainly accomplished the conversion of plastic optical fiber light signal and ammeter electric signal; The Ethernet converter mainly carries out the exchange of ethernet signal; Network exchanging chip main processing ethernet signal, the confirmation signal signal properties is handled the back and is got into Ethernet interface.
The plastic optical fiber network switch mainly carries out the exchange of plastic optical fiber signal, and between the ammeter, between ammeter and the network interface, ammeter and data processing centre (DPC) etc. carries out message exchange.Main and the internet of network interface carries out signal exchange.Ammeter plastic optical fiber signal gets into the plastic optical fiber network switch; Through after the information processing,, get into network interface if confirm it is internet signal; The ammeter signal directly gets into the internet; The ammeter signal can be accepted by the interface that connects the internet in the other side's signal Processing center, handles, and need not concentrator and accomplishes the process of checking meter.
Invention has been described according to specific exemplary embodiment here.It will be conspicuous under not departing from the scope of the present invention, carrying out suitable replacement to one skilled in the art or revise.Exemplary embodiment only is illustrative, rather than to the restriction of scope of the present invention, scope of the present invention is by appended claim definition.
Claims (8)
1. plastic optical fiber network power meter reading system, said kilowatt meter reading-out system comprises ammeter, data processing centre (DPC); It is characterized in that said kilowatt meter reading-out system also comprises meter-reading module, plastic optical fiber and the network switch; Said meter-reading module comprises RS232 interface, Ethernet converter, optical transmitter and optical receiver, and the said network switch comprises Ethernet converter, optical transmitter, optical receiver and network exchanging chip.
2. a kind of plastic optical fiber network power meter reading system as claimed in claim 1 is characterized in that said power meter reading system carries out the signal transmission through said plastic optical fiber, and the signal flow of kilowatt meter reading-out system is to being:
Said meter-reading module is gathered the ammeter signal;
Said meter-reading module is transferred to the said network switch through plastic optical fiber with the ammeter signal;
The said network switch is transferred to data processing centre (DPC) with signal;
The electricity meter-reading process finishes.
3. a kind of plastic optical fiber network power meter reading system as claimed in claim 1 is characterized in that the signal processing between the said meter-reading module and the said network switch is:
The optical transmitter of said meter-reading module is the network-type light signal with the ammeter conversion of signals, and the network-type light signal is coupled in the plastic optical fiber;
Said network-type light signal is transferred to the optical receiver of the said network switch through plastic optical fiber;
The optical receiver of the said network switch is reduced to the network-type electric signal with the network-type light signal;
The Ethernet converter of the said network switch is the ammeter signal with the network-type electrical signal conversion;
4. a kind of plastic optical fiber network power meter reading system as claimed in claim 1 is characterized in that said optical transmitter comprises light emitting diode, glass bar and connector.
5. a kind of plastic optical fiber network power meter reading system as claimed in claim 1 is characterized in that said optical receiver comprises photo-detector, glass bar and connector.
6. a kind of plastic optical fiber network power meter reading system as claimed in claim 1 is characterized in that the said network switch is connected with network interface through network exchanging chip.
7. a kind of plastic optical fiber network power meter reading system as claimed in claim 1 is characterized in that said meter-reading module is arranged at said ammeter inside.
8. a kind of plastic optical fiber network power meter reading system as claimed in claim 1 is characterized in that said ammeter signal comprises the Transistor-Transistor Logic level signal.
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| CN201110241140A CN102314765A (en) | 2011-08-22 | 2011-08-22 | Plastic optical fiber network electricity checks meter system |
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| CN201110241140A CN102314765A (en) | 2011-08-22 | 2011-08-22 | Plastic optical fiber network electricity checks meter system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680123A (en) * | 2013-02-05 | 2014-03-26 | 北京南瑞智芯微电子科技有限公司 | Method for reading intelligent electric meter, as well as system and plastic optical fiber multiplexer/de-multiplexer |
| CN104280833A (en) * | 2013-07-05 | 2015-01-14 | 深圳市中技源专利城有限公司 | Multi-core plastic optical fiber connector system |
| CN108615350A (en) * | 2018-08-09 | 2018-10-02 | 北京电联宇科技股份有限公司 | A kind of meter copying device |
| CN109450546A (en) * | 2018-12-29 | 2019-03-08 | 刘向宁 | Teledata collection copies fiber optic communications devices, collector and dual-wire communications network system |
| CN110796850A (en) * | 2019-11-25 | 2020-02-14 | 陕西省地方电力(集团)有限公司汉阴县供电分公司 | Online method and system for electricity consumption information acquisition equipment in no-signal area |
| CN110796849A (en) * | 2019-10-25 | 2020-02-14 | 国网四川省电力公司成都供电公司 | Ascending channel photoelectric transmission system of electric energy acquisition terminal |
| CN114670900A (en) * | 2022-04-25 | 2022-06-28 | 青岛地铁集团有限公司 | Traction brake control circuit, train control system and train |
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| CN102065345A (en) * | 2010-12-01 | 2011-05-18 | 王健 | Method and circuit for transmitting meter-reading information of electricity meter by utilizing low-cost time division multiplex optical network |
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| CN2563848Y (en) * | 2002-06-24 | 2003-07-30 | 深圳奥泰克光通信技术有限公司 | Optic transmission system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680123A (en) * | 2013-02-05 | 2014-03-26 | 北京南瑞智芯微电子科技有限公司 | Method for reading intelligent electric meter, as well as system and plastic optical fiber multiplexer/de-multiplexer |
| CN104280833A (en) * | 2013-07-05 | 2015-01-14 | 深圳市中技源专利城有限公司 | Multi-core plastic optical fiber connector system |
| CN108615350A (en) * | 2018-08-09 | 2018-10-02 | 北京电联宇科技股份有限公司 | A kind of meter copying device |
| CN109450546A (en) * | 2018-12-29 | 2019-03-08 | 刘向宁 | Teledata collection copies fiber optic communications devices, collector and dual-wire communications network system |
| CN110796849A (en) * | 2019-10-25 | 2020-02-14 | 国网四川省电力公司成都供电公司 | Ascending channel photoelectric transmission system of electric energy acquisition terminal |
| CN110796850A (en) * | 2019-11-25 | 2020-02-14 | 陕西省地方电力(集团)有限公司汉阴县供电分公司 | Online method and system for electricity consumption information acquisition equipment in no-signal area |
| CN114670900A (en) * | 2022-04-25 | 2022-06-28 | 青岛地铁集团有限公司 | Traction brake control circuit, train control system and train |
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Effective date of registration: 20130517 Address after: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Applicant after: China Electric Power Research Institute Applicant after: State Grid Corporation of China Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Applicant before: China Electric Power Research Institute |
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Application publication date: 20120111 |