CN106130621A - A kind of 230MHz antenna transmission system and base station and control method thereof - Google Patents

A kind of 230MHz antenna transmission system and base station and control method thereof Download PDF

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Publication number
CN106130621A
CN106130621A CN201610456340.4A CN201610456340A CN106130621A CN 106130621 A CN106130621 A CN 106130621A CN 201610456340 A CN201610456340 A CN 201610456340A CN 106130621 A CN106130621 A CN 106130621A
Authority
CN
China
Prior art keywords
230mhz
duplexer
antenna
transmission system
radiofrequency signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610456340.4A
Other languages
Chinese (zh)
Inventor
陈波
周阳
董天强
梁丹丹
杨爱冰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guiyang Power Supply Bureau Guizhou Power Grid Co ltd
Original Assignee
Guiyang Power Supply Bureau Guizhou Power Grid Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guiyang Power Supply Bureau Guizhou Power Grid Co ltd filed Critical Guiyang Power Supply Bureau Guizhou Power Grid Co ltd
Priority to CN201610456340.4A priority Critical patent/CN106130621A/en
Publication of CN106130621A publication Critical patent/CN106130621A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/155Ground-based stations
    • H04B7/15528Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15535Control of relay amplifier gain
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/14Two-way operation using the same type of signal, i.e. duplex
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a kind of 230MHz antenna transmission system and base station and control method thereof, including omnidirectional antenna and the duplexer that is connected with omnidirectional antenna, duplexer connects to be had for receiving the first radiofrequency signal the low-noise amplifier being amplified and for the 230MHz transmitter the second radiofrequency signal launched by described duplexer from described duplexer, low-noise amplifier is connected with power splitter, and power splitter is connected with multiple 230MHz receiver.The present invention uses the Receiver And Transmitter power information by the front end processor many on-site terminals of emission control orders quick obtaining of 230MHz, launch and receive and can carry out simultaneously, based on 230MHz distributed group network technology, use wireless private network access way flexibly, greatly reduce the lower deployment cost of equipment, the most easy-to-use, also improve the reliability and stability of communication data, control relatively reliable and accurate, be greatly improved the efficiency that power information gathers.

Description

A kind of 230MHz antenna transmission system and base station and control method thereof
Technical field
The invention belongs to electric power signal communication device technology field, relate to a kind of 230MHz antenna transmission system and base station and Control method.
Background technology
Antenna transmission system is one of important component part of microwave radio relay communication.What antenna feeder referred to is exactly that antenna adds feeder line, Antenna plays the electromagnetic wave that the electromagnetic wave transmitted in feeder line is converted to free-space propagation, or by the electromagnetism of free-space propagation Ripple is converted to the effect of the electromagnetic wave of transmission in feeder line.Feeder line is then the transmission channel of electromagnetic wave.Antenna feeder is shared in many radio frequency channels In the microwave radio relay communication circuit of wire system, the technical performance of antenna transmission system, quality index directly influence shared antenna feeder The communication quality of each microwave channel of system.
In existing electric power power information acquisition system, due to be located in mountain area, with a varied topography, fringe area is many, logical Letter infrastructure condition differs, and is therefore difficult to realize adopting large scale customer power information with unified pattern, networking mode Collection.The solution that telecommunication passage is conventional is the communication mode of GPRS and CDMA, due to rate and network service quality not Many reasons such as controlled, gather unreliable information, and data transmission instability, used device cost is high, and it is unreliable and accurate to control Spend poor.
Summary of the invention
The technical problem to be solved in the present invention is: for the problems referred to above, proposes a kind of 230MHz antenna transmission system and base station And control method, based on 230MHz distributed group network technology, use wireless private network access way flexibly, greatly reduce and set Standby lower deployment cost, the most easy-to-use, also improve the reliability and stability of communication data, control relatively reliable and accurate, with Solve problems of the prior art.
The technical scheme that the present invention takes is: a kind of 230MHz antenna transmission system, including omnidirectional antenna and with described omnidirectional The duplexer that antenna connects, described omnidirectional antenna is for receiving/launch radio frequency signal from 230MHz proximal device, described double Multiplexer is used for isolating reception/transmitting radio frequency signal, and connection has for receiving the first radiofrequency signal also from described duplexer The low-noise amplifier that is amplified and for the 230MHz that the second radiofrequency signal is launched by described duplexer is launched Machine, described low-noise amplifier is connected with described first radiofrequency signal after amplifying and divides equally multichannel and the merit that exports is divided Device, described power splitter is connected with the multiple 230MHz receivers for receiving described first radiofrequency signal after dividing equally.
Above-mentioned a kind of 230MHz antenna transmission system, also includes being arranged between described duplexer and described 230MHz transmitter Power amplifier (PA).
Above-mentioned power splitter is three power splitters.
The quantity of above-mentioned 230MHz receiver is three, and three tunnels first being respectively used to receive described three power splitter outputs are penetrated Frequently signal.
Above-mentioned duplexer is the duplexer of transmitting-receiving isofrequency full-duplex communication mechanism.
A kind of 230MHz antenna feeder base station, including above-mentioned 230MHz antenna transmission system, described 230MHz antenna transmission system On Receiver And Transmitter be connected to Ethernet switch, described Ethernet switch is connected to 230MHz front end processor, described 230MHz front end processor is used for network construction, safeguards and dispatch and protocol conversion, data buffer storage and process.
Above-mentioned 230MHz antenna transmission system, Ethernet switch are all connected by ethernet line with 230MHz front end processor.
The control method of a kind of 230MHz antenna feeder base station, the method step is: launched to receiver by front end processor 30 Control command, from the acquisition of 230MHz proximal device concentrator, omnidirectional antenna includes that the radio frequency signal of power information is sent to double Multiplexer, is sent to low-noise amplifier by receiving interface by the first radiofrequency signal after treatment, low-noise amplifier by this One radiofrequency signal is sent to power splitter after being amplified, the first radiofrequency signal after power splitter will amplify is sent to multiple reception Machine, the first radiofrequency signal after multiple receivers will be divided equally sends;The control command of front end processor that transmitter will receive Being sent to duplexer by power amplifier through the second radiofrequency signal, duplex is given near by emission interface by omni-directional antenna transmission End equipment concentrator, concentrator is collected power information according to this control command, is launched and receive and can carry out simultaneously.
Beneficial effects of the present invention: compared with prior art, the present invention uses the Receiver And Transmitter of 230MHz to pass through The power information of the many on-site terminals of front end processor emission control orders quick obtaining, launches and receives and can carry out simultaneously, based on 230MHz distributed group network technology, uses wireless private network access way flexibly, greatly reduces the lower deployment cost of equipment, flexibly Easy-to-use, also improve the reliability and stability of communication data, control relatively reliable and accurate, be greatly improved power information and adopt The efficiency of collection, can realize, the development trend of the fiber optic communication that faces the future.
Accompanying drawing explanation
Fig. 1 is 230MHz antenna transmission system structural representation of the present invention;
Fig. 2 is three receiver structure schematic diagrams of 230MHz antenna transmission system of the present invention;
Fig. 3 is the structural representation of 230MHz antenna feeder base station embodiment of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, the various enforcements that will be described below Example will be with reference to corresponding accompanying drawing, and these accompanying drawings constitute a part for embodiment, which describes and realizes the present invention and may adopt Various embodiments.It should be appreciated that it be also possible to use other embodiment, or the embodiment enumerated herein is carried out structure and merit Amendment on energy, without departing from the scope of the present invention and essence.
As shown in Figure 1-2, a kind of 230MHz antenna transmission system, including omnidirectional antenna 11 and is connected with omnidirectional antenna 11 pair Multiplexer 12, omnidirectional antenna 11 is for receiving/launch radio frequency signal from 230MHz proximal device, and duplexer connects for isolation Transmit/receive and penetrate radio frequency signal, and connection has for receiving the first radiofrequency signal the low noise being amplified from duplexer 12 Amplifier 13 and for the 230MHz transmitter 16 that the second radiofrequency signal is launched by duplexer 12, low-noise amplifier 13 be connected with for will amplify after the first radiofrequency signal divides equally multichannel the power splitter 14 exported, power splitter 14 be connected with for Receive multiple 230MHz receivers 15 of the first radiofrequency signal after dividing equally, also include being arranged at described duplexer 12 with described Power amplifier (PA) 17 between 230MHz transmitter 16, power splitter 14 is three power splitters, the quantity of 230MHz receiver 15 It is three, is respectively used to receive three tunnel the first radiofrequency signals of three power splitter 14 outputs.
Above-mentioned duplexer 12 is the duplexer of transmitting-receiving isofrequency full-duplex communication mechanism, and i.e. receive and launch work can be simultaneously Carry out.
As it is shown on figure 3, a kind of 230MHz antenna feeder base station, including above-mentioned 230MHz antenna transmission system 10,230MHz days Receiver 15 and transmitter 16 in feeder system 10 are connected to Ethernet switch 20, Ethernet switch by ethernet line 20 are connected to 230MHz front end processor 30 by ethernet line, 230MHz front end processor 30 for network construction, safeguard and dispatch and Protocol conversion, data buffer storage and process.
230MHz antenna transmission system of the present invention includes receiving passage and transmission channel, and concrete, the present invention is in power information In acquisition system, omnidirectional antenna 11 obtains from 230MHz proximal device concentrator and includes that the radio frequency signal of power information sends To duplexer 12, by receiving interface (RX), the first radiofrequency signal is sent to low-noise amplifier 13, low noise after treatment Amplifier 13 is sent to power splitter 14 after this first radiofrequency signal being amplified, the first radio frequency after power splitter 14 will amplify is believed Number being sent to multiple receiver 15, the first radiofrequency signal after multiple receivers 15 will be divided equally sends;On the other hand, launch The second radiofrequency signal comprising control command received is sent to duplexer 12 by machine 16, and duplexer 12 passes through emission interface (TX) being transmitted to proximal device concentrator by omnidirectional antenna 11, concentrator collects power information etc. according to this control command.
The present invention uses the 230MHz technology power information by the many on-site terminals of emission control orders quick obtaining, sends out Penetrate and receive and can carry out simultaneously, be greatly improved the efficiency that power information gathers, meanwhile, greatly reduce being deployed to of equipment This, the most easy-to-use.
As in figure 2 it is shown, 230MHz antenna transmission system of the present invention, also include being arranged at duplexer 12 and 230MHz transmitter 16 Between power amplifier (PA) 17, this power amplifier (PA) 17 is sent to duplex after the second radiofrequency signal being put into Device 12.Specifically, the power splitter 14 of the present invention is that the first radiofrequency signal is divided into three tunnels three power splitters exported, the most right The quantity of the receiver 15 answered is then 3, i.e. the first radiofrequency signal is divided into three tunnels to send by power splitter 14.
As it is shown on figure 3, the invention provides a kind of 230MHz antenna feeder base station, specifically include 230MHz antenna feeder mentioned above Wire system 10, the Ethernet switch 20 being connected with 230MHz antenna transmission system 10, it is connected with Ethernet switch 20 230MHz front end processor 30, wherein, 230MHz antenna transmission system 10, Ethernet switch 20 and 230MHz front end processor 30 all pass through Ethernet line is connected, and this 230MHz front end processor 30 is used for network construction, safeguards and dispatch and protocol conversion, data buffer storage and place The work such as reason.
230MHz antenna feeder base station of the present invention uses the Receiver And Transmitter of 230MHz to be ordered by front end processor emission control Make the power information of the many on-site terminals of quick obtaining, launch and receive and can carry out simultaneously, be greatly improved power information and adopt The efficiency of collection, meanwhile, greatly reduces the lower deployment cost of equipment, the most easy-to-use.
Embodiment 3: the control method of a kind of 230MHz antenna feeder base station, the method step is: by front end processor 30 to connecing Receipts machine 15 emission control orders, omnidirectional antenna 11 obtains the less radio-frequency including power information from 230MHz proximal device concentrator Signal is sent to duplexer 12, by receiving interface, the first radiofrequency signal is sent to low-noise amplifier 13 after treatment, low Noise amplifier 13 is sent to power splitter 14 after this first radiofrequency signal being amplified, first after power splitter 14 will amplify is penetrated Frequently signal is sent to multiple receiver 15, and the first radiofrequency signal after multiple receivers 15 will be divided equally sends;Transmitter 16 The control command of the front end processor 30 received is sent to duplexer 12 by power amplifier 17 through the second radiofrequency signal, duplex Device 12 is transmitted to proximal device concentrator by emission interface by omnidirectional antenna 11, and concentrator is collected according to this control command and used Electrical information, launches and receives and can carry out simultaneously.
The foregoing is only presently preferred embodiments of the present invention, those skilled in the art know, without departing from the present invention Spirit and scope in the case of, these features and embodiment can be carried out various change or equivalent.It addition, at this Under bright teaching, can modify these features and embodiment to adapt to particular situation and material without departing from this Bright spirit and scope.Therefore, the present invention is not limited to the particular embodiment disclosed, the power of fallen with the application Embodiment in profit claimed range broadly falls into protection scope of the present invention.

Claims (8)

1. a 230MHz antenna transmission system, it is characterised in that: include omnidirectional antenna (11) and connect with described omnidirectional antenna (11) The duplexer (12) connect, described omnidirectional antenna (11) is for receiving/launch radio frequency signal from 230MHz proximal device, described Duplexer is used for isolating reception/transmitting radio frequency signal, and connection has for receiving the first radio frequency from described duplexer (12) Signal the low-noise amplifier (13) being amplified and for the second radiofrequency signal is launched by described duplexer (12) The 230MHz transmitter (16) gone, described low-noise amplifier (13) is connected with described first radiofrequency signal after amplifying Dividing equally multichannel the power splitter (14) exported, described power splitter (14) is connected with for receiving the described first radio frequency letter after dividing equally Number multiple 230MHz receivers (15).
2. a kind of 230MHz antenna transmission system as claimed in claim 1, it is characterised in that: also include being arranged at described duplexer (12) power amplifier (17) and between described 230MHz transmitter (16).
3. a kind of 230MHz antenna transmission system as claimed in claim 1, it is characterised in that: described power splitter (14) is that three merits are divided Device.
4. a kind of 230MHz antenna transmission system as claimed in claim 3, it is characterised in that: the quantity of 230MHz receiver (15) It is three, is respectively used to receive three tunnel the first radiofrequency signals that described three power splitters (14) export.
5. a kind of 230MHz antenna transmission system as claimed in claim 1, it is characterised in that: described duplexer (12) is different for transmitting-receiving The duplexer of channel full duplex communication mechanism.
6. a 230MHz antenna feeder base station, it is characterised in that: include the 230MHz antenna feeder described in any one of claim 1 to 5 Wire system (10), described 230MHz antenna transmission system (10) is connected to Ethernet switch (20), described Ethernet switch (20) being connected to 230MHz front end processor (30), described 230MHz front end processor (30) is used for network construction, safeguards and dispatch and assist View conversion, data buffer storage and process.
7. a kind of 230MHz antenna feeder base station as claimed in claim 6, it is characterised in that: described 230MHz antenna transmission system (10), Ethernet switch (20) is all connected by ethernet line with 230MHz front end processor (30).
8. the control method of a kind of 230MHz antenna feeder base station as described in claim 6-7 is arbitrary, it is characterised in that: the method Step is: by front end processor (30) to receiver (15) emission control orders, omnidirectional antenna (11) is from 230MHz proximal device collection Middle device obtains and includes that the radio frequency signal of power information is sent to duplexer (12), after treatment by receiving interface by first Radiofrequency signal is sent to low-noise amplifier (13), and low-noise amplifier (13) sends after this first radiofrequency signal being amplified To power splitter (14), the first radiofrequency signal after power splitter (14) will amplify is sent to multiple receiver (15), multiple receivers (15) the first radiofrequency signal after dividing equally sends;The control command of the front end processor (30) received is led to by transmitter (16) Overpower amplifier (17) is sent to duplexer (12) through the second radiofrequency signal, and duplexer (12) passes through omnidirectional by emission interface Antenna (11) is transmitted to proximal device concentrator, and concentrator collects power information according to this control command, launches and receives permissible Carry out simultaneously.
CN201610456340.4A 2016-06-22 2016-06-22 A kind of 230MHz antenna transmission system and base station and control method thereof Pending CN106130621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610456340.4A CN106130621A (en) 2016-06-22 2016-06-22 A kind of 230MHz antenna transmission system and base station and control method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610456340.4A CN106130621A (en) 2016-06-22 2016-06-22 A kind of 230MHz antenna transmission system and base station and control method thereof

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2852539Y (en) * 2005-10-31 2006-12-27 中兴通讯股份有限公司 Device for multiple base station sharing aerial feed and base station system
US20090247070A1 (en) * 2006-07-18 2009-10-01 Motorola, Inc. Wireless communication system, portable radio repeater and magazine therefor
CN101959327A (en) * 2009-07-14 2011-01-26 上海德通能源环保科技有限公司 Near-end machine and far-end machine of frequency shift repeater
CN102170296A (en) * 2011-04-22 2011-08-31 北京大学 A radio frequency front-end circuit structure
CN103747447A (en) * 2013-12-03 2014-04-23 国家电网公司 Radio modem and power TD-LTE private network common antenna system and implementation method thereof
CN204117337U (en) * 2014-07-15 2015-01-21 宽兆科技(深圳)有限公司 Hyperchannel number passes base station and the power remote meter reading system based on this base station
CN105071827A (en) * 2015-08-27 2015-11-18 成都众山科技有限公司 Full-duplex data transfer radio
CN204809388U (en) * 2015-08-24 2015-11-25 北京智芯微电子科技有限公司 A small -size antenna for electric power 230MHz wireless telecom equipment
CN105515641A (en) * 2016-01-05 2016-04-20 成都九洲电子信息系统股份有限公司 Big data transmission system based on big dipper first generation communication system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2852539Y (en) * 2005-10-31 2006-12-27 中兴通讯股份有限公司 Device for multiple base station sharing aerial feed and base station system
US20090247070A1 (en) * 2006-07-18 2009-10-01 Motorola, Inc. Wireless communication system, portable radio repeater and magazine therefor
CN101959327A (en) * 2009-07-14 2011-01-26 上海德通能源环保科技有限公司 Near-end machine and far-end machine of frequency shift repeater
CN102170296A (en) * 2011-04-22 2011-08-31 北京大学 A radio frequency front-end circuit structure
CN103747447A (en) * 2013-12-03 2014-04-23 国家电网公司 Radio modem and power TD-LTE private network common antenna system and implementation method thereof
CN204117337U (en) * 2014-07-15 2015-01-21 宽兆科技(深圳)有限公司 Hyperchannel number passes base station and the power remote meter reading system based on this base station
CN204809388U (en) * 2015-08-24 2015-11-25 北京智芯微电子科技有限公司 A small -size antenna for electric power 230MHz wireless telecom equipment
CN105071827A (en) * 2015-08-27 2015-11-18 成都众山科技有限公司 Full-duplex data transfer radio
CN105515641A (en) * 2016-01-05 2016-04-20 成都九洲电子信息系统股份有限公司 Big data transmission system based on big dipper first generation communication system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
邱云鹏: "电力负荷管理系统230MHz蜂窝组网验证研究", 《中国优秀硕士学位论文全文数据库》 *

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