CN101470943A - Electric power remote meter reading communication method and apparatus, and data gathering equipment - Google Patents
Electric power remote meter reading communication method and apparatus, and data gathering equipment Download PDFInfo
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- CN101470943A CN101470943A CNA2008103003364A CN200810300336A CN101470943A CN 101470943 A CN101470943 A CN 101470943A CN A2008103003364 A CNA2008103003364 A CN A2008103003364A CN 200810300336 A CN200810300336 A CN 200810300336A CN 101470943 A CN101470943 A CN 101470943A
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Abstract
The invention discloses a power remote meter reading communication method and a data aggregation device, wherein remote meter reading data is collected through a concentrator, data is transmitted to a data collecting unit through the concentrator, data is standardized, then, standardized data is transmitted to the data aggregation device to carry out remote transmission through the data aggregation device, aggregated data is transmitted to a data receiving and analyzing unit, the data receiving and analyzing unit sends the data to a data analyzing and distributing unit, the data is distributed by the data analyzing and distributing unit, and distributed data is transmitted to a data center. The method and the device collect electrical energy data in one zone and then transmit the data, the transmission efficiency is improved, an existing data transmission mode of directly connecting single point-to-point fiber with user families is changed, and the cost of remote meter reading is lowered. The invention provides a brand-new data aggregation device, and the data which is collected on the spot can be converted, which is convenient for connecting with various communication media.
Description
Technical field
The present invention relates to a kind of electric power remote meter reading communication method and device and data gathering equipment, belong to the remote meter reading communication technical field.
Background technology
Power remote meter reading system is an important content of present distribution automation system, also is part the most active in the present distribution automation system.This system finishes data acquisition and transmission by on-scene communication and telecommunication two big technology, make that the electric energy data of every family can be in long-range realization monitoring, and finish collection, monitoring, control, analysis and decision function by last lower channel, be the main carrier of realizing automatic data logging and auto-power-cutting function.The many equipment vendors of the link of communicating by letter at the scene at present develop various communication modes in succession and satisfy the demand, for example: technology such as carrier wave, less radio-frequency, 485 fieldbus.But aspect telecommunication, that is that all right is ripe for prior art, often needs to pay huge communications cost and comes the less data cut-in operation of quantity performed.The existing communication technology, often just can realize in theory, but its cost of installing and using is too high, ruck can't bear, and its communication technology normally relies on a kind of communication media, and equipment is single, at different installation environments, and in the selection to different communication medias, can't reach satisfied effect, exist on-the-spot install complicated, use problems such as equipment redundancy, means of communication are single.Simultaneously in some areas, owing to do not have specialized equipment, technology and unified planning, modes such as numerous and confused employing optical cable direct connection are carried out the data acquisition transmission, make the construction cost of remote system significantly improve like this, can't carry out the popularization of long-distance meter-reading system, simultaneously, because communication structure extended capability in the past is very limited, can't be for distribution automation system provide unified reliable communications platform, the port extended capability makes popularizing of present distribution automation system and long-distance meter-reading system have a communication performance bottleneck all the time a little less than too.
Summary of the invention
The objective of the invention is to: a kind of electric power remote meter reading communication method and device and data gathering equipment are provided, and its operating cost is low, and is easy for installation, is suitable for various environments for use and communication media.
Electric power remote meter reading communication method of the present invention, the remote meter reading data are collected by concentrator, by concentrator data transmission is arrived data acquisition unit, after data acquisition unit carries out standardization to data, with standardized data transmission to data gathering equipment, carry out remote transmission by data gathering equipment by communication media, with the data transmission that converges on the Data Receiving resolution unit, the Data Receiving resolution unit sends to the data parsing allocation units with data, by the data parsing allocation units data are distributed, with the data transmission of distributing to data center.
Above-mentioned electric power remote meter reading communication method, communication media are cable, optical cable or radio communication.
Above-mentioned electric power remote meter reading communication method, data gathering equipment is formed convergence-level, promptly is connected with communication media between at least 2 data convergence devices, carries out data transmission mutually.
Electric power remote meter reading communication structure of the present invention, it comprises concentrator 1, concentrator 1 is connected to data acquisition unit 2, data acquisition unit 2 transfers on the data gathering equipment 3 by on-scene communication medium 7, data gathering equipment 3 transfers to Data Receiving resolution unit 4 by long-range communications mediums 8, Data Receiving resolution unit 4 connects data parsing allocation units 5, and data parsing allocation units 5 connect data center 6.
Above-mentioned electric power remote meter reading communication structure is connected with long-range communications mediums 8 between at least 2 data convergence devices 3, data gathering equipment 3 is formed convergence-level.
Above-mentioned electric power remote meter reading communication structure, long-range communications mediums 8 is cable, optical cable or radio communication, adopts wherein 2 kinds or 3 kinds of long-range communications mediums 8 composition composite channels.
The used data gathering equipment of electric power remote meter reading communication structure of the present invention, it comprises casing 9, in casing 9, be provided with and be used for the data-interface 10 that is connected with data acquisition unit 2, the electric power modem 11 and the light oral sex that are connected with data-interface 10 change planes 12, and the cable distribution rack 13 that is connected with electric power modem 11 with light oral sex 12 optical fiber cable distribution frames that are connected 15 of changing planes; And the air switch distributing frame 17 that power supply is provided; Below casing 9, be provided with light/cable shaft 16.
The above-mentioned used data gathering equipment of electric power remote meter reading communication structure is provided with shark cheek exhaust sheet 18 above casing 9 sides.
The above-mentioned used data gathering equipment of electric power remote meter reading communication structure is provided with wireless near field communication router one 4 in casing 9; On-scene communication medium 7 adopts radio communication, and concentrator 1 connects near radio Transmit-Receive Unit 27 by protocol converter 21 backs, and near radio Transmit-Receive Unit 27 arrives wireless near field communication router one 4 with data transmission.
The above-mentioned used data gathering equipment of electric power remote meter reading communication structure is provided with cable distribution rack 13 and optical fiber cable distribution frame 15, light/cable shaft 16 in casing 9; In casing 9, also be provided with clamping installing port 20.
The applicant is in the middle of field practice for many years, sum up and explore the technology of a whole set of remote meter reading data communication aspect, this technology is collected the electric energy data of every family by concentrator, by concentrator data transmission is arrived data acquisition unit, data are carried out standardization, carry out remote transmission by data gathering equipment then.Transmission has again improved transfer efficiency after electric energy data in the zone can being collected, and has changed the data transfer mode that existing single point-to-point optical fiber is directly linked user's family, has reduced the cost of remote meter reading.If adopt single point-to-point transmission mode, installation and cost of use will reach more than 3000 yuan, and adopt the solution of the present invention, and sub-district 1000 family resident families can adopt an Optical Fiber Transmission total data, and the installation and the cost of use of average each household only are 0.3 yuan.And at existing various communication medias, as cable, optical cable or radio communication, the invention provides a kind of brand-new data gathering equipment, the data of collection in worksite can be changed, conveniently be connected with various communication medias, and needn't be at each communication media buying, the required equipment of installation, adaptability is stronger, and is easier for installation.Therefore when mounted, can select different data communication medium flexibly, simple, simplified equipment are installed at the characteristics that the area is installed.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is the structural representation of the embodiment of the invention 2;
Accompanying drawing 3 is the structural representation of the embodiment of the invention 3;
Accompanying drawing 4 is the structural representation of the embodiment of the invention 4;
Accompanying drawing 5 is the structural representation of the embodiment of the invention 5;
Accompanying drawing 6 is the structural representation of data gathering equipment of the present invention;
Accompanying drawing 7 is the side view of data gathering equipment in the accompanying drawing 6;
Accompanying drawing 8 is the another kind of structural representation of data gathering equipment of the present invention.
Reference numeral: 1-concentrator, the 2-data acquisition unit, the 3-data gathering equipment, 4-Data Receiving resolution unit, 5-data parsing allocation units, 6-data center, 7-on-scene communication medium, the 8-long-range communications mediums, the 9-casing, the 10-data-interface, the 11-electric power modem, the oral sex of 12-light is changed planes, the 13-cable distribution rack, 14-wireless near field communication router, the 15-optical fiber cable distribution frame, 16-light/cable shaft, 17-air switch distributing frame, 18-shark cheek exhaust sheet, the 19-base, 20-clamping installing port, the 21-protocol converter, the 22-fiber optical transceiver, the 23-switching equipment, the on-the-spot netting twine of 24-, the 25-serial interface cable, the on-the-spot netting twine of 26-, 27-near radio Transmit-Receive Unit, 28-optical fiber, the 29-cable distribution rack, 30-remote-wireless passage, the 31-wireless router, 32-multi-channel serial port protocol processor, the 33-cable modem, the 34-serial interface cable, the 35-cable, 36-optical fiber, the 37-cable.
Embodiment
Embodiments of the invention 1: electric power remote meter reading communication structure of the present invention, as shown in Figure 1, it adopts concentrator 1 that the ammeter data of each household is collected, concentrator 1 adopts existing 485 concentrators, concentrator 1 is connected to data acquisition unit 2, data acquisition unit 2 transfers to the data of gathering on the data gathering equipment 3 by on-scene communication medium 7, data gathering equipment 3 transfers to Data Receiving resolution unit 4 by long-range communications mediums 8, Data Receiving resolution unit 4 connects data parsing allocation units 5, and data parsing allocation units 5 connect data center 6.Select different long-range communications mediums 8 according to field condition, can select cable, optical cable (being also referred to as optical fiber) or radio communication.In order to guarantee the normal of data transmission, between 2 or 2 above data gathering equipments 3, be connected with long-range communications mediums 8, data gathering equipment 3 is formed convergence-levels.
The present invention is divided into five parts with whole remote meter reading process, from Fig. 1 left side, is respectively data and inserts part, convergence part, tcp data segment, data parsing part and data allocations part.During work, the remote meter reading data of every family are collected by concentrator 1, by concentrator 1 data transmission is arrived data acquisition unit 2,2 pairs of data of data acquisition unit are carried out standardization, to meet the host-host protocol of used communication media, then with standardized data transmission to data gathering equipment 3, carry out remote transmission by data gathering equipment 3, with the data transmission that converges on Data Receiving resolution unit 4, Data Receiving resolution unit 4 sends to data parsing allocation units 5 with data, distribute by 5 pairs of data of data parsing allocation units, with the data transmission of distributing to data center 6.Just can grasp whole electric energy users' of whole power supply area situation by data center 6.
Data gathering equipment 3 of the present invention, make base 19 earlier, casing 9 is installed on the base 19, in casing 9, install and be used for the data-interface 10 that is connected with data acquisition unit 2, data-interface 10 connects the electric power modem 11 and the light oral sex that are used for data-switching and changes planes 12, the electric power modem 11 and the light oral sex that are connected with data-interface 10 is installed changes planes 12.Also being equipped with provides the air switch of power supply distributing frame 17, is used to finish the access of device power supply (DPS).Below casing 9, be manufactured with light/cable shaft 16, be used for the turnover of cable.The communication cable that connects data acquisition unit 2 is connected to data-interface 10, difference according to the communication cable that connects data acquisition unit 2, connect electric power modem 11 respectively or the light oral sex changes planes 12, data are changed, to be fit to different transmission medium and host-host protocols, and then be connected to cable distribution rack 13 or optical fiber cable distribution frame 15, by 1 optical cable or cable data are carried out remote transmission with after the convergence.
For active equipment, above casing 9 sides, produce shark cheek exhaust sheet 18, finish inner with outside exchange heat, it is overheated to prevent in the casing 9, and the shape of shark cheek exhaust sheet 18 can also prevent that rainwater or small worm from entering in the casing 9.Clamping installing port 20 is installed in casing 9, is used to tie up communication cable.In casing 9, also ground unit should be installed, with anti-lightning strike.
Under normal conditions, adopt wired (optical cable, cable) transmission better,, wireless near field communication router one 4 is installed in casing 9 in order to satisfy more needs; On-scene communication medium 7 adopts radio communication, and concentrator 1 connects near radio Transmit-Receive Unit 27 by protocol converter 21 backs, and near radio Transmit-Receive Unit 27 to wireless near field communication router one 4, is finished the collection in worksite to data with data transmission.
Data gathering equipment 3 of the present invention also can adopt the structure of passive convergence device, and cable distribution rack 13 and optical fiber cable distribution frame 15 are installed in casing 9, makes bright dipping/cable shaft 16 in casing 9 bottoms; Clamping installing port 20 is installed in casing 9, is used to tie up communication cable.Data acquisition unit 2 directly adopts optical cable or cable, is connected with cable distribution rack 13 or optical fiber cable distribution frame 15, finishes converging data.Its structure is simpler, and cost is lower, but owing to do not have electric power modem 11 and light oral sex to change planes 12, data acquisition unit 2 and data transmission distance all are restricted, and can't form convergence-level, so scalability is bad.
Illustrate respectively below by selection the different communication medium, and the concrete equipment and the structure that adopt.
Embodiments of the invention 2: as shown in Figure 2, the port of each concentrator 1 is by serial interface cable 25 connection protocol converters 21, changes on-the-spot intercommunication mode into based on ICP/IP protocol mode.Carry out the access of data by fiber optical transceiver 22, data are transferred to data gathering equipment 3 by on-scene communication medium 7, connect by long-range communications mediums 8 between a plurality of data gathering equipments 3, form convergence-level, data gathering equipment 3 connects central office switching equipment 23 by long-range communications mediums 8, and switching equipment 23 connects data center 6 by on-the-spot netting twine 24.It is main communication media that present embodiment adopts optical cable, protocol converter 21 and fiber optical transceiver 22 are finished the effect of data acquisition unit 2, data are carried out standardization, send to data gathering equipment 3 then, connect by on-the-spot netting twine 26 between protocol converter 21 and the fiber optical transceiver 22, fiber optical transceiver 22 is by optical-fiber connection data interface 10, data-interface 10 connects the light oral sex and changes planes 12, the light oral sex changes planes 12 by optical fiber connection optical fiber cable distribution frame 15, after optical fiber cable distribution frame 15 becomes 1 optical fiber with all convergences, carry out the remote data transmission by 1 optical fiber.
On-scene communication medium 7 and long-range communications mediums 8 all adopt optical fiber, and central office switching equipment 23 is realized the effect of Data Receiving resolution unit 4 and data parsing allocation units 5, and the data of receiving are resolved and distributed, and are transferred to data center 6 then.
Embodiments of the invention 3: as shown in Figure 3, when adopting optical fiber,, also can adopt individual data convergence device 3 to finish the transmission of data for the less area of user as main communication media, identical among its structure and equipment and the embodiment 2, just data gathering equipment 3 is not formed convergence-level.
Embodiments of the invention 4: as shown in Figure 4, on-the-spot communication media adopts the short distance wireless communication technology (WINMAX), port at each concentrator 1 is installed protocol converter 21, connect near radio Transmit-Receive Unit 27 by on-the-spot netting twine 26 then, in the casing 9 of data gathering equipment 3, be provided with wireless near field communication router one 4; Near radio Transmit-Receive Unit 27 to wireless near field communication router one 4, carries out remote transmission after converging data by data gathering equipment 3 again with data transmission, and the remote transmission process is with embodiment 2.The short distance wireless communication technology can the scene is several or even concentrators 1 tens dispersions converge in the data gathering equipment 3, be fit to the rural area that the user disperses and use.
Embodiments of the invention 5: in various field conditions, have certain situation more special.Because the tens of families of some residents are dispersed in everywhere, can't be by simple method with data centralization processing again behind the concentrator, perhaps at the scene in the environment, the situation of many concentrators has nothing in common with each other, and can't adopt single communication mode to converge data.In this case, adopt multiple communication media to form composite channel, transmit.As shown in Figure 5, the concentrator 1 of top, left side adopts cable as communication media, concentrator 1 is by serial interface cable 34 stube cable modulator-demodular units 33, cable modem 33 connects data gathering equipment 3 by cable 35, the concentrator 1 of below, left side adopts optical fiber 36 as communication media, connected mode such as embodiment 2.The concentrator 1 of middle upper part adopts the short distance wireless communication technology as communication media, connected mode such as embodiment 4.Form convergence-level between the data gathering equipment 3, adopt optical cable and radio communication to form composite channel.In the data transmission between data gathering equipment 3 and data center 6, adopt remote-wireless passage 30 (CDMA/GPRS), cable 37 and optical fiber 28 to form composite channel respectively.Remote-wireless passage 30 is at data gathering equipment 3 the remote-wireless communication module to be installed, and data transmission to the wireless router 31 of central station, after wireless router 31 is resolved distribution, is arrived data center 6 with data transmission.Cable 37 is cable distribution rack 29 and cable modem 33 and the multi-channel serial port protocol processors 32 (MOXA) that connect central station by cable, then data transmission is arrived switch 23, transfers to data center 6 at last.The connected mode of optical fiber 28 such as embodiment 2.
Claims (10)
- [claim 1] a kind of electric power remote meter reading communication method, it is characterized in that: the remote meter reading data are collected by concentrator, by concentrator data transmission is arrived data acquisition unit, after data acquisition unit carries out standardization to data, with standardized data transmission to data gathering equipment, carry out remote transmission by data gathering equipment by communication media, with the data transmission that converges on the Data Receiving resolution unit, the Data Receiving resolution unit sends to the data parsing allocation units with data, by the data parsing allocation units data are distributed, with the data transmission of distributing to data center.
- [claim 2] electric power remote meter reading communication method according to claim 1 is characterized in that: communication media is cable, optical cable or radio communication.
- [claim 3] electric power remote meter reading communication method according to claim 1 is characterized in that: data gathering equipment is formed convergence-level, promptly is connected with communication media between at least 2 data convergence devices, carries out data transmission mutually.
- [claim 4] a kind of electric power remote meter reading communication structure, it comprises concentrator (1), it is characterized in that: concentrator (1) is connected to data acquisition unit (2), data acquisition unit (2) transfers on the data gathering equipment (3) by on-scene communication medium (7), data gathering equipment (3) transfers to Data Receiving resolution unit (4) by long-range communications mediums (8), Data Receiving resolution unit (4) connects data parsing allocation units (5), and data parsing allocation units (5) connect data center (6).
- [claim 5] electric power remote meter reading communication structure according to claim 4 is characterized in that: be connected with long-range communications mediums (8) between at least 2 data convergence devices (3), data gathering equipment (3) is formed convergence-level.
- [claim 6] electric power remote meter reading communication structure according to claim 4 is characterized in that: long-range communications mediums (8) is cable, optical cable or radio communication, adopts wherein 2 kinds or 3 kinds of long-range communications mediums (8) composition composite channel.
- The used data gathering equipment of [claim 7] a kind of electric power remote meter reading communication structure, it comprises casing (9), it is characterized in that: in casing (9), be provided with and be used for the data-interface (10) that is connected with data acquisition unit (2), the electric power modem (11) and the light oral sex that are connected with data-interface (10) are changed planes (12), and the cable distribution rack (13) that is connected with electric power modem (11) with the light oral sex optical fiber cable distribution frame (15) that (12) be connected of changing planes; And the air switch distributing frame (17) that power supply is provided; Be provided with light/cable shaft (16) in casing (9) below.
- The used data gathering equipment of [claim 8] electric power remote meter reading communication structure according to claim 7 is characterized in that: be provided with shark cheek exhaust sheet (18) in top, casing (9) side.
- The used data gathering equipment of [claim 9] electric power remote meter reading communication structure according to claim 7 is characterized in that: be provided with wireless near field communication router (14) in casing (9); On-scene communication medium (7) adopts radio communication, and concentrator (1) connects near radio Transmit-Receive Unit (27) by protocol converter (21) back, and near radio Transmit-Receive Unit (27) arrives wireless near field communication router (14) with data transmission.
- The used data gathering equipment of [claim 10] electric power remote meter reading communication structure according to claim 7 is characterized in that: in casing (9), be provided with cable distribution rack (13) and optical fiber cable distribution frame (15), and light/cable shaft (16); In casing (9), also be provided with clamping installing port (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2008103003364A CN101470943B (en) | 2008-02-05 | 2008-02-05 | Electric power remote meter reading communication method and apparatus, and data gathering equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008103003364A CN101470943B (en) | 2008-02-05 | 2008-02-05 | Electric power remote meter reading communication method and apparatus, and data gathering equipment |
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| CN101470943A true CN101470943A (en) | 2009-07-01 |
| CN101470943B CN101470943B (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008103003364A Expired - Fee Related CN101470943B (en) | 2008-02-05 | 2008-02-05 | Electric power remote meter reading communication method and apparatus, and data gathering equipment |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013923A (en) * | 2010-11-19 | 2011-04-13 | 深圳市共进电子有限公司 | Method for realizing high-speed automation of meter reading based on Ethernet optical fiber network |
| CN102088796A (en) * | 2010-12-25 | 2011-06-08 | 江西九江供电公司 | Wireless communication system of distribution network |
| CN102394003A (en) * | 2011-08-22 | 2012-03-28 | 中国电力科学研究院 | Plastic optical fiber electric power meter reading system |
| CN102818593A (en) * | 2012-08-14 | 2012-12-12 | 苏州左海电气有限公司 | Power cable intermediate head online monitoring data centralizing and transmitting device |
| CN104792391A (en) * | 2015-04-13 | 2015-07-22 | 安徽理工大学 | MODBUS protocol converter and ultrasonic water meter detection system and method |
| CN106790319A (en) * | 2015-11-19 | 2017-05-31 | 上海巴安水务股份有限公司 | A kind of remote transmission method and its system for realizing industrial control equipment data |
| CN107589810A (en) * | 2017-09-07 | 2018-01-16 | 联想(北京)有限公司 | It is used for the method and system for controlling fan in server system |
| CN108269388A (en) * | 2017-12-11 | 2018-07-10 | 李长云 | A kind of Internet of Things concentrator and data conversion assemblage method |
| CN108377032A (en) * | 2018-04-18 | 2018-08-07 | 中国人民解放军海军工程大学 | A kind of anti-interference isolating and protecting device of remote control equipment |
| CN108881808A (en) * | 2017-05-09 | 2018-11-23 | 中兴通讯股份有限公司 | A kind of near-field communication interconnecting device and meter reading management method |
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| CN2779354Y (en) * | 2005-02-05 | 2006-05-10 | 上海自来水市北科技有限公司 | A floor concentrator for remote meter reading system |
| CN100357984C (en) * | 2006-01-20 | 2007-12-26 | 上海唐锐信息技术有限公司 | Method for transmitting measurement data quantitatively and periodically from a wireless meter reading system terminal |
| CN100375129C (en) * | 2006-03-13 | 2008-03-12 | 常州苏源永利达电子科技有限公司 | Remote management system for ammeter data |
| CN101055663B (en) * | 2006-04-16 | 2012-07-18 | 姜建国 | A remote intelligent meter writing method and remote intelligent meter writing system |
| CN101055664A (en) * | 2007-04-23 | 2007-10-17 | 孙克怡 | Mixed remote meter writing method and system |
| CN201149726Y (en) * | 2008-02-05 | 2008-11-12 | 陈攀 | Electric power remote meter-reading communication device and data assemblage equipment |
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2008
- 2008-02-05 CN CN2008103003364A patent/CN101470943B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013923A (en) * | 2010-11-19 | 2011-04-13 | 深圳市共进电子有限公司 | Method for realizing high-speed automation of meter reading based on Ethernet optical fiber network |
| CN102013923B (en) * | 2010-11-19 | 2013-09-11 | 深圳市共进电子股份有限公司 | Method for realizing high-speed automation of meter reading based on Ethernet optical fiber network |
| CN102088796A (en) * | 2010-12-25 | 2011-06-08 | 江西九江供电公司 | Wireless communication system of distribution network |
| CN102394003A (en) * | 2011-08-22 | 2012-03-28 | 中国电力科学研究院 | Plastic optical fiber electric power meter reading system |
| CN102818593A (en) * | 2012-08-14 | 2012-12-12 | 苏州左海电气有限公司 | Power cable intermediate head online monitoring data centralizing and transmitting device |
| CN104792391A (en) * | 2015-04-13 | 2015-07-22 | 安徽理工大学 | MODBUS protocol converter and ultrasonic water meter detection system and method |
| CN106790319A (en) * | 2015-11-19 | 2017-05-31 | 上海巴安水务股份有限公司 | A kind of remote transmission method and its system for realizing industrial control equipment data |
| CN108881808A (en) * | 2017-05-09 | 2018-11-23 | 中兴通讯股份有限公司 | A kind of near-field communication interconnecting device and meter reading management method |
| CN107589810A (en) * | 2017-09-07 | 2018-01-16 | 联想(北京)有限公司 | It is used for the method and system for controlling fan in server system |
| CN108269388A (en) * | 2017-12-11 | 2018-07-10 | 李长云 | A kind of Internet of Things concentrator and data conversion assemblage method |
| CN108377032A (en) * | 2018-04-18 | 2018-08-07 | 中国人民解放军海军工程大学 | A kind of anti-interference isolating and protecting device of remote control equipment |
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| CN101470943B (en) | 2011-06-15 |
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