CN113543060A - Power grid multi-base-station data acquisition system and method based on photon millimeter wave communication - Google Patents
Power grid multi-base-station data acquisition system and method based on photon millimeter wave communication Download PDFInfo
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- H—ELECTRICITY
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Abstract
The invention discloses a power grid multi-base-station data acquisition system and method based on photonic millimeter wave communication. The wireless communication network constructed by the system supports full duplex communication, and each base station uploads the acquired data to the sink node through wireless communication and simultaneously supports receiving of command data forwarded by the sink node. The invention can provide the data acquisition transmission capability for a plurality of base stations working in an outdoor power grid, and the data transmission between the base stations adopts photon millimeter wave communication, compared with wired optical fiber communication, the invention overcomes the difficulty that optical fibers are difficult to lay due to special terrains such as swamps, cliffs and the like, breaks through the limitation of bandwidth compared with the traditional wireless communication, can adapt to large-capacity data transmission, and greatly saves the cost of establishing communication connection between the base stations when operators develop special terrains.
Description
Technical Field
The application relates to the technical field of millimeter wave and terahertz communication, in particular to a power grid multi-base-station data acquisition system and method based on photon millimeter wave communication.
Background
In the conventional wireless communication technology, the transmission of large-capacity data is always a difficulty in the development of the communication technology. At present, large-capacity data transmission is often performed by using optical fiber cable communication. But the optical fiber is superior in the field of wired communication, and is difficult to adapt to special terrains such as swamps, cliffs and the like. Methods for solving the problem are to bypass special terrains or build some auxiliary buildings to lay optical fibers, but the methods have high cost and slow construction, and are far less convenient than wireless communication. However, it is difficult to adapt to large-capacity data transmission with conventional wireless communication due to bandwidth limitation. Therefore, the search for new wireless communication solutions is becoming more important.
In 5G communication which is popular at present, the frequency bands used are Sub-6GHz and high-frequency millimeter waves. The millimeter wave frequency band in the wireless communication can provide stable large-capacity wireless communication, so that the millimeter wave technology is used for a communication network, and the application requirements of ultra-large bandwidth and ultra-high speed can be better met.
At present, two modes of photo-generation and electricity generation are mainly adopted for millimeter wave generation, and due to the bandwidth limitation of electronic devices, the communication of electricity generation millimeter waves is difficult to reach higher frequency bands, so that the communication capacity of the electricity generation millimeter waves is still difficult to meet higher requirements. And the optical millimeter wave receiving device has small influence, can realize higher-frequency communication, is easy to adjust and can be butted with an optical fiber. Therefore, the function of realizing large-capacity data transmission in the area which is difficult to be covered by wired communication can be realized by the aid of the optical millimeter wave technology, and the millimeter wave technology can perfectly meet the requirements that the wired communication is difficult to be covered and the wireless communication is difficult to achieve communication capacity.
Disclosure of Invention
In view of the above, the invention provides a power grid multi-base-station data acquisition system based on photon millimeter wave communication and a working method thereof. The data transmission capability can be provided outdoors for a plurality of base stations of the power grid. The whole system comprises a starting point remote antenna unit, N node remote antenna units and a convergence remote antenna unit, can realize data acquisition of each base station, and then converge to the last base station, the data is converted into optical fiber communication in the base station and transmitted to an upper layer optical fiber network, wireless transmission is adopted between the base stations, optical fibers are not used, the communication network can support full duplex communication, each base station wirelessly uploads the acquired data to the convergence node, and meanwhile, the base station supports receiving of command data forwarded by the convergence node. And the wireless working frequency range can be freely adjusted according to the requirements, and the high-capacity wireless data communication function of a plurality of base stations and the control center is realized.
Based on the above, in a first aspect, the invention provides a power grid multi-base-station data acquisition system based on photonic millimeter wave communication, which comprises a starting point remote antenna unit, N node remote antenna units and a convergence remote antenna unit.
The starting point remote antenna unit comprises a data exchange module, an up-converter, an electric circulator, a down-converter and a receiver, and uplink and downlink two-link transmission is formed; the uplink is designed in such a way that the information is acquired by the data exchange module, then is adjusted into a passband signal by the up-converter, and is output to the rear-end antenna by the electric circulator; the downlink is designed to receive signals from a rear-end antenna, the signals are sent to a receiver after down-conversion, the output of the receiver is connected with a data exchange module, and the data exchange module is connected with a data acquisition module.
The node remote antenna unit consists of an electric circulator, two down converters, a data exchange module, an up converter, a power divider, a receiver and a power amplifier, and forms uplink and downlink two-link transmission; the uplink is designed to be that the output end of the front-end electric circulator is connected with the data exchange module through the down converter, the data exchange module is connected with the data acquisition module, and the output of the data exchange module is output to the rear-end electric circulator after passing through the up converter; the down link is a back end electric circulator outputting to the power divider, the output of the power divider is divided into two paths of signals, one path is connected with a down converter and is sent to a receiver, the receiver is connected with a data exchange module, and the other path is connected with a front end electric circulator through a power amplifier.
The convergence remote antenna unit consists of an electric circulator, a down converter, a data exchange module, an electro-optical modulator, an optical circulator, a photoelectric detector, a power divider, a power amplifier, an up converter and a receiver, and forms an uplink link and a downlink link, wherein the uplink link supports wireless bridge transmission to optical fibers, and the downlink link is just opposite; the uplink is input to the electric circulator at the front end by a front-end signal, is connected with the data exchange module through the down converter, is connected with the data acquisition module through the data exchange module, is output to the electro-optical modulator and is input to the optical circulator through modulation to be connected with the optical fiber. The down link is input to the optical circulator by an optical fiber, converted into an electric signal by the photoelectric detection module and then output to the power divider, one output of the power divider is transmitted into the data exchange module after passing through the receiver, and the other output of the power divider is connected with the electric circulator after passing through the power amplifier and the up-converter.
As a second aspect of the present invention, a method for acquiring data of multiple base stations of a power grid based on photonic millimeter wave communication is provided, where the method includes:
the starting point remote wireless unit realizes the data acquisition of the base station, can realize the bidirectional wireless data receiving and transmitting with the next node remote wireless unit, supports the data transmission of the next node remote antenna unit, and receives the command instruction transmitted by the next node remote antenna unit for operation; the starting point remote wireless unit is composed of an uplink and a downlink and supports bidirectional wireless transmission; the uplink acquires data locally, and then up-converts the data to a radio frequency carrier wave, and sends the radio frequency carrier wave to a back-end antenna and a back-end node; the downlink demodulates data received by the rear-end antenna, extracts local command data, and is used for controlling local acquisition equipment.
The node remote wireless units can realize data acquisition in the base station, support full-duplex wireless data transceiving and bidirectional forwarding of received data of other remote wireless units, and gather all data by the plurality of node remote wireless units at the convergence remote wireless unit to finish convergence; the node remote wireless unit is composed of an uplink and a downlink and supports bidirectional wireless transmission; the uplink is to receive the radio frequency signal sent by the front end node by an antenna, then down convert the radio frequency signal to a baseband, then couple the radio frequency signal with local acquisition data, up convert the radio frequency signal to a radio frequency carrier wave together, and send the radio frequency carrier wave to a back end antenna to transmit the radio frequency signal to a back end node; the downlink divides data received by the rear-end antenna into two paths, one path demodulates the data, the extracted destination node is local command data and is used for controlling local acquisition equipment, and the other path is amplified and then directly transmitted from the front-end antenna.
The aggregation remote wireless unit is to realize the aggregation of all the remote antenna unit data at the front end and support the bridging function from optical fiber to wireless. The convergence remote wireless unit consists of an uplink and a downlink, wherein the uplink supports the bridge transmission from the wireless to the optical fiber, and the downlink is just opposite; the uplink is a radio frequency signal (a convergence signal containing a plurality of remote wireless unit acquisition data) received by a front-end antenna, is subjected to down-conversion (comprising a low noise amplifier and an envelope detector) firstly, is coupled with local acquisition data, is subjected to electro-optical modulation and is converted into an optical signal, and the optical signal is transmitted to an upper-layer optical fiber network through an optical fiber; the downlink is to carry out photoelectric detection on a control command from an optical fiber network, and then the downlink is divided into two paths, one path analyzes command data to realize control on acquisition equipment, and the other path amplifies the command data and completes up-conversion and then directly transmits the command data from a front-end antenna.
The invention has the beneficial effects that:
the system and the method for acquiring data of multiple base stations of the power grid based on photon millimeter wave communication upgrade wired optical fiber communication between the base stations into wireless millimeter wave communication, overcome the problems that the traditional wireless communication is limited by capacity due to the fact that the ground is complex between the base stations, and the optical fiber communication is difficult to implement.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a power grid multi-base-station data acquisition system based on photonic millimeter wave communication provided by the invention;
FIG. 2 is a schematic diagram of a remote antenna unit from a starting point according to the present invention;
FIG. 3 is a schematic diagram of a node remote antenna unit provided by the present invention;
FIG. 4 is a schematic diagram of a converged remote antenna unit provided by the present invention;
fig. 5 is a schematic diagram of the technical principle of the up-conversion optical beat frequency millimeter wave provided by the present invention.
Detailed Description
For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the invention discloses a power grid multi-base-station data acquisition system and method based on photon millimeter wave communication, which can overcome the difficulties that the traditional wireless communication bandwidth is limited, large-capacity data transmission cannot be supported and the like because the wired optical fiber communication at the present stage cannot be built in areas such as swamps and cliffs or the like or the construction cost is high forcibly, and the total cost of data acquisition work of an operator in base stations deployed in areas such as swamps and cliffs is greatly reduced.
Referring to fig. 1, fig. 1 is a schematic diagram of an overall structure of a power grid multi-base station data acquisition system based on photonic millimeter wave communication according to an embodiment of the present invention. As shown in fig. 1, the system includes a starting remote antenna unit 1, a node remote antenna unit 2, a node remote antenna unit 3, and a convergence remote antenna unit 4. Each remote antenna unit is disposed in the base station to provide data transmission function for the base station. The base stations are in wireless communication with each other, the wireless communication distance is 500-1000 m, and the working frequency band is 38 GHz; each base station comprises a camera and a sensor, and serves as a data acquisition module in the embodiment, wherein the camera generates 1080p video data (with compressed video), the sensor acquires other data, and the total data capacity is about 16 Mbps.
The starting point remote antenna unit 1, the node remote antenna unit 2, the node remote antenna unit 3 and the convergence remote antenna unit 4 can acquire data, and after the starting point remote antenna unit acquires the data, the data are sent to the node remote antenna unit 2, the node remote antenna unit 2 acquires local data, and the local data are coupled with the data of the starting point remote antenna unit 1 and then transmitted to the node remote antenna unit 2. Similarly, after the node remote antenna unit 2 collects the local data, the local data is coupled with the received data, and the data is transmitted to the node remote antenna unit 3. After receiving the data, the node remote antenna unit 3 couples the data with the local acquisition data and sends the data to the convergence remote antenna unit 4. After the local data is collected by the converged remote antenna unit 4. And coupling the local data with the received data, so that the data of all the base stations are acquired completely, and the wireless communication is performed in the transmission process. And finally, the convergence remote antenna unit transmits the data to an upper-layer optical fiber network through optical fibers to complete data transmission of the plurality of base stations and the control center. Meanwhile, the control center can also transmit command data, after the command data reaches the convergence remote antenna unit 4 through the optical fiber, the convergence remote antenna unit 4 reads a control command of the convergence remote antenna unit 4, and then transmits other control commands to the node remote antenna unit 3 through wireless communication, after the node remote antenna unit 3 reads a control command of the node remote antenna unit 3, the other control commands are transmitted to the node remote antenna unit 2, after the node remote antenna unit 2 reads the control command of the node remote antenna unit, the data are transmitted to the starting point remote antenna unit 1, and the control command is read by the starting point remote antenna unit 1. Therefore, the system completes the data bidirectional transmission of the multiple base stations of the power grid.
The implementation principle and implementation manner of each unit will be shown based on a specific implementation example, and it should be understood by those skilled in the art that the specific implementation example below is only a preferred example, and other implementation manners based on the same concept should also belong to the protection scope of the present invention.
Specifically, as a preferred embodiment, fig. 2 is a schematic diagram of a principle of a starting point remote antenna unit according to an embodiment of the present invention. The starting point remote antenna unit is divided into an uplink link and a downlink link. In an uplink, after data is acquired by the data acquisition module 1 (a camera and a sensor), the data is sent to the data exchange module 2, then the data exchange module 2 reads the data and sends the data to the up-conversion module 3, the communication band is adjusted to 380GHz wireless communication frequency through up-conversion, and the data is isolated by the electric circulator 4 and then sent to an antenna for data transmission. In the downlink, after receiving command data through an antenna, the command data is isolated by an electrical circulator 4, then is converted into a baseband signal by a down converter 5, and is output to a receiver 6, and then the receiver 6 receives the data and sends the command data to a data exchange module 2 to control a data acquisition module 1.
Fig. 3 is a schematic diagram of a node remote antenna unit according to the present invention. The remote antenna unit is divided into an uplink link and a downlink link and supports bidirectional wireless transmission. In the uplink, after receiving a radio frequency signal, a front-end antenna changes the radio frequency signal into a baseband signal through the down converter 1 after passing through the electrical circulator 9, and then inputs the baseband signal into the data exchange module 10, and meanwhile, after acquiring local data, the data acquisition module 2 inputs the local data into the data exchange module 10 to be coupled with the received data, and then the local data is converted to a 380GHz radio frequency carrier through the up converter 3, and the radio frequency carrier is sent to a right-end antenna through the electrical circulator 4. In a downlink, data received by a rear-end antenna is isolated by an electrical circulator 4 and then divided into two paths of signals by a power divider 5, one path of signal is changed into a baseband signal by a down converter 6, and the baseband signal is demodulated by a receiver 8 to obtain local command data which is sent to a data exchange module 10 to control the work of a data acquisition module 2; the other path of signal is amplified by the power amplifier 7 and then directly sent to the front-end antenna for transmission through the electric circulator 9.
Fig. 4 is a schematic diagram of the convergence remote antenna unit according to the present invention. The remote antenna unit is composed of an uplink link and a downlink link, wherein the uplink link supports bridge transmission from wireless to optical fiber, and the downlink link is just opposite. In the uplink, a radio frequency signal (a convergence signal including data collected by a plurality of remote antenna units) received by a front-end antenna enters a down converter 1 through an electric circulator 11 to be down-converted to a baseband signal, then is coupled with local data collected by a data collection module 2 in a data exchange module 3, is modulated into an optical signal through an electro-optical modulator 4, and is sent into an optical fiber through an optical circulator 5 to be transmitted to an upper-layer optical fiber network. In a downlink, a control command from an optical fiber network is converted into an electric signal through a photoelectric detector 6, then the electric signal is divided into two paths through a power divider 7, one path of the control command is subjected to reading of local command data after passing through a receiver 8, operation of a data acquisition module 2 is controlled through a data exchange module 3, the other path of the control command is amplified through a power amplifier 9, subjected to frequency conversion to 38GHz through an up-converter 10 and then isolated by an electric circulator and sent to a front-end antenna for transmission.
Fig. 5 is a schematic diagram illustrating the technical principle of the up-conversion optical beat frequency millimeter wave provided by the present invention. Firstly, a laser transmitter 1 generates a laser with the frequency of 193.200THz, a laser transmitter 2 generates a laser with the frequency of 193.238THz, and simultaneously receives data to be transmitted through modulation, the two lasers are coupled in an optical coupler 3 and then transmitted into a photoelectric detection module 4 to be subjected to optical heterodyne beat frequency, 38GHz millimeter waves with data are obtained, and millimeter wave wireless transmission signals with the frequency of 38GHz can be obtained through a power amplifier 5.
The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or in software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in Random Access Memory (RAM), flash memory, Read Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), Electrically Erasable Programmable Read Only Memory (EEPROM), registers, a hard disk, a removable hard disk, a compact disc read only memory (CD-ROM), or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor.
Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.
Claims (9)
1. A power grid multi-base-station data acquisition system based on photon millimeter wave communication is characterized by comprising a starting point remote antenna unit, N node remote antenna units and a convergence remote antenna unit;
the starting point remote antenna unit comprises a data exchange module, an up-converter, an electric circulator, a down-converter and a receiver, and uplink and downlink two-link transmission is formed;
the node remote antenna unit consists of an electric circulator, two down converters, a data exchange module, an up converter, a power divider, a receiver and a power amplifier, and forms uplink and downlink two-link transmission;
the convergence remote antenna unit consists of an electric circulator, a down converter, a data exchange module, an electro-optical modulator, an optical circulator, a photoelectric detector, a power divider, a power amplifier, an up converter and a receiver, and forms an uplink link and a downlink link, wherein the uplink link supports wireless bridging transmission to optical fibers, and the downlink link is just opposite.
2. The power grid multi-base-station data acquisition system based on photonic millimeter wave communication as claimed in claim 1, wherein the uplink of the starting remote wireless unit is designed such that after information is acquired by the data exchange module, the information is passed through an up-converter, adjusted into a pass-band signal, and output to a rear-end antenna through an electric circulator;
the downlink of the starting point remote wireless unit is designed to receive signals from a rear-end antenna, and the signals are sent to a receiver after down-conversion, the output of the receiver is connected with a data exchange module, and the data exchange module is connected with a data acquisition module.
3. A power grid multi-base-station data acquisition system based on photonic millimeter wave communication as claimed in claim 1, wherein the uplink of the node remote wireless unit is designed such that the output end of the electrical circulator at the front end is connected to the data exchange module via the down converter, the data exchange module is connected to the data acquisition module, and the output of the data acquisition module is output to the rear-end electrical circulator via the up converter;
the down link of the node remote wireless unit is a rear-end electrical circulator and outputs the signal to the power divider, the output of the power divider is divided into two paths of signals, one path of the signal is connected with the down converter and is sent to the receiver, the receiver is connected with the data exchange module, and the other path of the signal is connected with the front-end electrical circulator through the power amplifier.
4. The power grid multi-base-station data acquisition system based on photonic millimeter wave communication as claimed in claim 1, wherein the uplink of the converged remote wireless unit is input to a front-end electrical circulator by a front-end signal, connected to a data exchange module via a down converter, the data exchange module is connected to a data acquisition module, then output to an electro-optical modulator, and input to the optical circulator via modulation, and connected to an optical fiber;
the downlink of the convergence remote wireless unit is input to the optical circulator through an optical fiber, converted into an electric signal through the photoelectric detection module and then output to the power divider, one output of the power divider is transmitted into the data exchange module after passing through the receiver, and the other output of the power divider is connected with the electric circulator after passing through the power amplifier and the up-converter.
5. A power grid multi-base-station data acquisition system based on photonic millimeter wave communication according to any one of claims 2 to 4, characterized in that the technology used for beat frequency is an optical beat frequency millimeter wave technology, and the radio frequency generation mode is optical heterodyne beat frequency.
6. A power grid multi-base-station data acquisition method based on photon millimeter wave communication is characterized by comprising the following steps:
the starting point remote wireless unit realizes the data acquisition of the base station, can realize the bidirectional wireless data receiving and transmitting with the next node remote wireless unit, supports the data transmission of the next node remote antenna unit, and receives the command instruction transmitted by the next node remote antenna unit for operation;
the node remote wireless units can realize data acquisition in the base station, support full-duplex wireless data transceiving and bidirectional forwarding of received data of other remote wireless units, and gather all data by the plurality of node remote wireless units at the convergence remote wireless unit to finish convergence;
the aggregation remote wireless unit is to realize the aggregation of all the remote antenna unit data at the front end and support the bridging function from optical fiber to wireless.
7. The method of claim 6, wherein the origin remote wireless unit is comprised of an uplink and a downlink, supporting two-way wireless transmission;
the uplink acquires data locally, and then up-converts the data to a radio frequency carrier wave, and sends the radio frequency carrier wave to a back-end antenna and a back-end node;
the downlink demodulates data received by the rear-end antenna, extracts local command data, and is used for controlling local acquisition equipment.
8. The method of claim 6, wherein the node remote radio unit is comprised of an uplink and a downlink, supporting two-way radio transmission;
the uplink is used for receiving a radio frequency signal sent by the front end node by an antenna, then converting the radio frequency signal into a baseband by down conversion, then coupling the baseband with locally acquired data, then converting the radio frequency signal into a radio frequency carrier by up conversion, and sending the radio frequency carrier to the rear end antenna to be transmitted to the rear end node;
the downlink divides data received by a rear-end antenna into two paths, one path demodulates the data and extracts local command data of a target node for controlling local acquisition equipment, and the other path is amplified and then directly transmitted from a front-end antenna.
9. The method of claim 6, wherein the converged remote wireless unit is comprised of an uplink and a downlink, the uplink supporting wireless-to-fiber bridging, and the downlink being reversed;
the uplink is to down convert the radio frequency signal received by the front-end antenna, then couple with the local collected data, electro-optically modulate and convert the radio frequency signal into an optical signal, and transmit the optical signal to an upper layer optical fiber network through an optical fiber;
the downlink is characterized in that photoelectric detection is performed on a control command from an optical fiber network, and then the downlink is divided into two paths, one path analyzes command data to realize control on acquisition equipment, and the other path amplifies the command data and completes up-conversion and then directly transmits the command data from a front-end antenna.
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| CN114286365A (en) * | 2021-12-16 | 2022-04-05 | 四川通信科研规划设计有限责任公司 | Data return method and system based on base station electrically-tuned antenna AISG |
| CN114745815A (en) * | 2022-05-13 | 2022-07-12 | 交通运输部规划研究院 | Data transmission system for base station of shore station |
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| CN112752322A (en) * | 2019-10-31 | 2021-05-04 | 中国电信股份有限公司 | 5G millimeter wave cell searching and accessing method based on terminal capability |
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| CN114286365A (en) * | 2021-12-16 | 2022-04-05 | 四川通信科研规划设计有限责任公司 | Data return method and system based on base station electrically-tuned antenna AISG |
| CN114286365B (en) * | 2021-12-16 | 2023-09-26 | 四川通信科研规划设计有限责任公司 | Data feedback method and system based on base station electrically tunable antenna AISG |
| CN114745815A (en) * | 2022-05-13 | 2022-07-12 | 交通运输部规划研究院 | Data transmission system for base station of shore station |
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| CN113543060B (en) | 2024-01-26 |
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