CN113965833B - Communication signal control method and system based on laser energy supply network - Google Patents
Communication signal control method and system based on laser energy supply network Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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- H02J50/30—Circuit arrangements or systems for wireless supply or distribution of electric power using light, e.g. lasers
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- H04B10/25—Arrangements specific to fibre transmission
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- H—ELECTRICITY
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Abstract
The invention provides a communication signal control method and a system thereof based on a laser energy supply network, which comprises the steps of setting optical fibers on a transformer station side, a pole tower side and between the transformer station side and the pole tower side into optical fibers shared by a laser energy signal and an information communication signal; connecting a photocell in parallel with a super capacitor and a node sensor; the wavelength division multiplexer is used for transmitting the information communication signal output by the optical splitter and the divided laser energy signal to the sensor node through an optical fiber; the wavelength division multiplexer distinguishes laser energy signals and information communication signals and respectively transmits the laser energy signals and the information communication signals to the photocell and the tower side optical communication module; and controlling the optical communication modules corresponding to the side of the tower to sequentially transmit the sensing data to a server at the side of the transformer substation at preset time intervals by the sensor nodes according to a signal time-sharing strategy. Through the method and the device, the mutual noninterference of the same channel is realized by setting a sufficiently large time span, and the stable uploading of multi-node connection is realized by staggering the time for uploading the sensing data of each sensor node.
Description
Technical Field
The invention belongs to the technical field of energy signal common-fiber transmission, and particularly relates to a communication signal control method and a communication signal control system based on a laser energy supply network.
Background
The information acquisition and information transmission technology based on the electronic technology is a main technical means of the current Internet of things terminal layer, and the optical fiber communication system has the advantages of low unit loss, long transmission distance, strong anti-electromagnetic interference capability, simple laying and networking, safe and reliable communication data and the like, can meet the requirement of remote communication in a complex electromagnetic environment to a greater extent, and is suitable for monitoring application in various environments. However, due to the limitation of energy supply and other factors, the electronic terminals usually have a series of inconveniences caused by energy supply problems in special environments such as overhead transmission lines, underground pipe galleries and the like. In recent years, as an important branch of modern optical technology, optical fibers have been developed to transmit energy from simple light transmission to sensing of various physical quantities from step-index distribution fibers to complex-index distribution fibers, and the structure thereof is shown in fig. 1. The optical fiber energy transmission technology can realize the optical fiber supply of the far-end node of the optical communication network, realize the common transmission of energy and information, effectively meet the requirement of quick layout of the communication network in the field complex environment, and have important application value.
At present, aiming at an overhead transmission line, a server host at a transformer substation side is always in an open state, as only one optical fiber is used at an electric power optical cable to complete downlink transmission of energy light and uplink and downlink transmission of information light, and as the time for charging the capacitor of each sensor node at a tower side to a discharge threshold is not completely consistent, the time randomness of uploading sensing data exists. Therefore, the same optical fiber is adopted by the transformer substation side to complete data transmission with a plurality of sensor nodes on the tower side, mutual interference of the same optical fiber channel is easily caused, and the stability of information performance is influenced.
Therefore, how to solve the problems that the data transmission of a plurality of sensor nodes on the side of a tower is completed by adopting the same optical fiber on the side of a transformer station of the existing overhead transmission line, the same optical fiber channel is interfered with each other, and the stability of information energy is influenced, and an effective solution is not provided.
Disclosure of Invention
In order to solve the technical problems, the invention provides a communication signal control method based on a laser energy supply network, which realizes that the same channels do not interfere with each other by setting a sufficiently large time span, and realizes stable uploading of multi-node connection by staggering the time for uploading sensing data by each sensor node.
In a first aspect, an embodiment of the present invention provides a communication signal control method based on a laser energy supply network, which is applied to a communication signal control system based on a laser energy supply network, where the system includes a substation side and a tower side, the substation side is provided with a laser light source, the tower side is provided with an optical splitter connected to a laser light source optical fiber, and a plurality of sensor nodes, and each sensor node is provided with a wavelength division multiplexer connected to the optical splitter optical fiber, a photocell, a tower side optical communication module, a node sensor, and a node central processing chip, where the method includes:
setting optical fibers on the transformer station side, the pole tower side and between the transformer station side and the pole tower side to be common fibers of a laser energy signal and an information communication signal, wherein the energy light center wavelength of the laser energy signal is more than 1400 nanometers and is larger than the information light center wavelength of the information communication signal;
the photocell is connected with a super capacitor and a node sensor in parallel, and the node sensor and the tower side optical communication module are electrically connected onto the node central processing chip;
the wavelength division multiplexer is used for transmitting the information communication signal output by the optical splitter and the divided laser energy signal to each sensor node through an optical fiber;
the wavelength division multiplexers of the sensor nodes distinguish laser energy signals and information communication signals and respectively transmit the laser energy signals and the information communication signals to the photocell and the tower side optical communication module;
and each sensor node controls the corresponding tower side optical communication module to sequentially transmit sensing data to a server at the side of the transformer substation at preset time intervals according to a signal time-sharing strategy.
Preferably, the server on the substation side is always in an open state, and each sensor node controls the corresponding tower side optical communication module to upload sensing data to the server on the substation side at a time interval t in sequence according to a signal time-sharing strategy; and the time interval T is greater than 1.1-1.2 times of the maximum charging time T of the super capacitor of each sensor node.
Preferably, each sensor node is provided with one or more sensors selected from a temperature sensor, a humidity sensor, an air pressure sensor, a light intensity sensor, a wind speed sensor, a camera and an image sensor.
Preferably, a plurality of micro watt power consumption sensors and/or milliwatt power consumption sensors are mounted on each sensor node.
Preferably, the photovoltaic cell is made of an InP material lattice-matched with InGaAs, and the InP material is completely transparent to the laser light having the energy light center wavelength in a band above 1400 nm.
In a second aspect, an embodiment of the invention provides a communication signal control system based on a laser energy supply network, the system includes a substation side and a tower side, the substation side is provided with a laser light source, the tower side is provided with a splitter connected with the laser light source, and a plurality of sensor nodes, the sensor nodes are provided with a wavelength division multiplexer connected with the splitter, a photocell, a tower side optical communication module, a node sensor and a node central processing chip, the photocell is connected with a super capacitor and a node sensor in parallel, and the node sensor and the tower side optical communication module are electrically connected to the node central processing chip; the optical fibers on the substation side, the pole tower side and between the substation side and the pole tower side are arranged to be shared by a laser energy signal and an information communication signal, and the energy light center wavelength of the laser energy signal is more than 1400 nanometers and larger than the information light center wavelength of the information communication signal.
Preferably, each sensor node controls the corresponding tower side optical communication module to upload sensing data to the server at the substation side at time intervals t in sequence according to a signal time-sharing strategy; and the time interval T is greater than 1.1-1.2 times of the maximum charging time T of the super capacitor of each sensor node.
Preferably, each sensor node is provided with one or more sensors selected from a temperature sensor, a humidity sensor, an air pressure sensor, a light intensity sensor, a wind speed sensor, a camera and an image sensor.
Preferably, a plurality of micro watt power consumption sensors and/or milliwatt power consumption sensors are mounted on each sensor node.
Preferably, the photovoltaic cell is made of an InP material lattice-matched with InGaAs, and the InP material is completely transparent to the laser light having the energy light center wavelength in a band above 1400 nm.
The communication signal control method based on the laser energy supply network and the system thereof provided by the embodiment of the invention have at least the following technical effects:
the invention adopts a mode that each sensor node controls a corresponding tower side optical communication module to sequentially upload sensing data to a server at the side of the transformer substation at preset time intervals according to a signal time-sharing strategy so as to stagger the time for uploading the sensing data by each sensor node, achieve the purpose of occupying a channel by time-sharing to upload the sensing data, and ensure that the multi-sensor nodes realize stable uploading of the sensing data. And when the optical fibers on the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side are set to be shared by the laser energy signal and the information communication signal, the influence of a complex nonlinear refraction effect on the communication signal during the transmission of the laser signal is set, and the time interval T of uploading sensing data of the connected sensor nodes is set to be 1.1-1.2 times greater than the maximum charging time T of the super capacitor of each sensor node, so that the problem of mutual interference of the same channel caused by the difference of uploading sensing data time when the time of charging the capacitor of each sensor node to the discharging threshold is not completely consistent can be effectively solved. The invention provides a reliable and stable remote energy supply and communication scheme, can realize high reliability, high efficiency and high safety of the operation and maintenance of the power transmission line, and provides important support for constructing a controllable, safe, reliable, environment-friendly and economic intelligent power grid system.
Drawings
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 or the prior art descriptions 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 to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a prior art optical fiber configuration;
fig. 2 is a block diagram of a communication signal control system based on a laser energy supply network according to an embodiment of the present invention;
fig. 3 is a flowchart of a communication signal control method based on a laser energy supply network according to an embodiment of the present invention;
fig. 4 is a block diagram of a communication signal control system based on a laser energy supply network according to a second embodiment of the present invention;
fig. 5 is a block diagram of a communication signal control system based on a laser energy supply network according to a third embodiment of the present invention;
fig. 6 is a block diagram of a communication signal control system based on a laser energy supply network according to a fourth embodiment of the present invention;
fig. 7 is a flowchart of a communication signal control method based on a laser energy supply network according to a fourth embodiment of the present invention;
fig. 8 is a block diagram of a communication signal control system based on a laser energy supply network according to a fifth embodiment of the present invention;
fig. 9 is a flowchart of a communication signal control method based on a laser energy supply network according to a fifth embodiment of the present invention.
Description of reference numerals:
10-transformer substation side, 11-laser light source, 12-server;
the system comprises a 20-pole tower side, a 21-junction box, a 211-optical splitter, a 22-sensor node, a 221-wavelength division multiplexer, a 222-photocell, a 223-super capacitor, a 224-pole side optical communication module, a 225-node sensor and a 226-node central processing chip.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.
Example one
The embodiment provides a communication signal control method based on a laser energy supply network, which is applied to a communication signal control system based on the laser energy supply network. As shown in FIG. 2, the communication signal control system based on the laser energy supply network comprises a substation side 10 and a tower side 20. The transformer station side 10 is provided with a laser light source 11 and a server 12, and the pole tower side 20 is provided with a light splitter 211 connected with the laser light source 11 through optical fibers and a plurality of sensor nodes 22. Specifically, the optical splitter 211 is disposed in the junction box 21, and the laser energy signal and the information communication signal transmitted from the substation side 10 are distributed to the plurality of sensor nodes 22 through the optical splitter 211 as needed.
Further, each sensor node 22 is provided with a wavelength division multiplexer 221, a photocell 222, a super capacitor 223, a tower-side optical communication module 224, a node sensor 225 and a node central processing chip 226. The wavelength division multiplexer 221 is in optical fiber connection with the optical splitter 211, the wavelength division multiplexer 221 is in optical fiber connection with the photocell 222 and the tower-side optical communication module 224 respectively, the photocell 222 is connected in parallel with the super capacitor 223 and the node sensor 225, and the node sensor 225 and the tower-side optical communication module 224 are electrically connected to a node central processing chip 226;
wherein, the node sensor 225 is a micro watt level power consumption sensor. Specifically, the micro watt level power consumption sensor comprises a temperature sensor, a humidity sensor, an air pressure sensor, a light intensity sensor and a wind speed sensor. In this embodiment, each of the sensor nodes 22 is provided with a temperature sensor, a humidity sensor, an air pressure sensor, a light intensity sensor, and a wind speed sensor. It should be noted that in other embodiments, one or more of a temperature sensor, a humidity sensor, an air pressure sensor, a light intensity sensor, and a wind speed sensor are installed at each of the sensor nodes.
Furthermore, the photocell is made of an InP material in lattice matching with the InGaAs, and the InP material is completely transparent to the laser with the energy light center wavelength being more than 1400 nanometers.
As shown in fig. 3, the communication signal control method based on the laser energy supply network provided in this embodiment specifically includes the following steps:
s101, arranging optical fibers on the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side into a common optical fiber of a laser energy signal and an information communication signal, wherein the energy optical center wavelength of the laser energy signal is more than 1400 nanometers and is larger than the information optical center wavelength of the information communication signal;
wherein, in order to be better suitable for transmitting energy in a long distance, the energy light center wavelength of the laser energy signal is preferably 1450 nm, and the information light center wavelength of the information communication signal is preferably 1310 nm.
In a preferred embodiment of the present invention, it is required to satisfy the common fiber transmission requirement of 5 km long-distance power supply and 5 km long-distance communication, for example, although the output energy is high when the light source with the 810 nm center wavelength is used for power supply, the transmission loss is larger as the transmission distance is longer, so that the scheme is not suitable for the power supply requirement with the transmission distance exceeding the km order. Meanwhile, the light source of 810 nm band as the energy supply source of the project cannot meet the requirement of energy and information transmission in one optical fiber, and an additional optical fiber is needed to be used as a communication optical fiber, because the energy transmission optical fiber for transmitting light of 810 nm band is a special multi-core optical fiber.
And adopt in this patent application the transformer substation side the pole tower side and the transformer substation side with optic fibre between the pole tower side sets to laser energy signal and the information communication signal single optic fibre of fine altogether, just the energy light center wavelength of laser energy signal is more than 1400 nanometers and is greater than information communication signal's information light center wavelength, and with photocell, super capacitor combine together, can realize 5 kilometers remote energy supply and 5 kilometers remote communication's fine transmission demand altogether to satisfy the power consumption demand of each sensor node of shaft tower side.
And S102, connecting the photocell in parallel with a super capacitor and a node sensor, wherein the node sensor and the tower side optical communication module are electrically connected to the node central processing chip.
And S103, transmitting the information communication signal output by the optical splitter and the divided laser energy signal to a wavelength division multiplexer of each sensor node through an optical fiber.
S104, the wavelength division multiplexers of the sensor nodes distinguish laser energy signals and information communication signals and respectively transmit the laser energy signals and the information communication signals to the photocell and the tower side optical communication module;
the wavelength division multiplexer system has optical monitoring channels, and its main function is to monitor the transmission condition of each channel in the system. Inserting an optical monitoring signal with the wavelength of 1550 nanometers generated by the node into a transmitting end, and carrying out wave combination output with an optical signal of a main channel; at the receiving end, the received optical signal is demultiplexed, and an optical monitoring signal with 1550 nm wavelength and a traffic channel optical signal are respectively output. The frame synchronization byte, the service byte and the overhead byte used by the network manager are transmitted through the optical supervisory channel.
S105, controlling the corresponding tower side optical communication modules by the sensor nodes according to a signal time-sharing strategy to sequentially upload sensing data to a server at the transformer substation side at preset time intervals;
and the server at the transformer substation side is always in an open state, and each sensor node controls the corresponding tower side optical communication module to upload sensing data to the server at the transformer substation side at a time interval t in sequence according to a signal time-sharing strategy. For example, the sensing data are uploaded to the server host on the substation side at intervals of 1S in sequence, for example, the sensing data are uploaded at the time point T0 by the first sensor node on the tower side, the second sensor node senses the sensing data at the time point (T0 + 1) S, the third sensor node senses the sensing data at the time point (T0 + 2) S, and the … … nth sensor node senses the sensing data at the time point (T0 + (n-1)) S. According to the method, each sensor node controls the corresponding tower side optical communication module to sequentially upload the sensing data to the substation side server at a preset time interval according to a signal time-sharing strategy, so that the time for uploading the sensing data by each sensor node is staggered, the purpose of occupying a channel in a time-sharing manner to upload the sensing data is achieved, and the multi-sensor node is ensured to realize stable data uploading.
Further, considering the problem that the mutual interference of the same channel is caused by the time difference of uploading sensing data, which exists when the time for charging the capacitor of each sensor node to the discharge threshold is not completely consistent in the practical application process, in a preferred embodiment of the present invention, the mutual interference of the same channel is effectively avoided by setting the time interval T to be 1.1 to 1.2 times of the maximum charging time T of the super capacitor of each sensor node. In fact, the time interval T is set to be 1.1-1.2 times of the maximum charging time T of the super capacitor of each sensor node, so that a complex program algorithm at each sensor node can be responded more quickly, and the system is high in overall matching and high in efficiency. Moreover, when the optical fibers on the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side are set to be shared by the laser energy signal and the information communication signal, the influence of a complex nonlinear refraction effect on the communication signal during the propagation of the laser signal is set, and the communication signal deviation rate can be basically controlled within 0.15% by setting the time interval T of uploading sensing data of the connected sensor nodes to be 1.1-1.2 times greater than the maximum charging time T of the super capacitors of each sensor node; the problem that the same channel is interfered with each other due to the fact that time difference of uploading sensing data exists when the time of charging the capacitor of each sensor node to the discharging threshold is not completely consistent can be effectively solved. In the experimental process, if the time interval T of uploading sensing data of the connected sensor nodes is set to be 1.01-1.09 times of the maximum charging time T of the super capacitor of each sensor node, the deviation rate of the communication signal can be basically controlled to be more than 1%, and the common fiber transmission requirements of long-distance energy supply over 5 kilometers and long-distance communication over 5 kilometers are difficult to meet.
Example two
The embodiment provides a communication signal control method based on a laser energy supply network, which is applied to a communication signal control system based on the laser energy supply network. As shown in fig. 4, the communication signal control system based on the laser energy supply network comprises a substation side 10 and a tower side 20. The transformer station side 10 is provided with a laser light source 11 and a server 12, and the pole tower side 20 is provided with a light splitter 211 connected with the laser light source 11 through optical fibers and a plurality of sensor nodes 22. Specifically, the optical splitter 211 is disposed in the junction box 21, and the laser energy signal and the information communication signal transmitted from the substation side 10 are distributed to the plurality of sensor nodes 22 through the optical splitter 211 as needed.
Further, each sensor node 22 is provided with a wavelength division multiplexer 221, a photocell 222, a super capacitor 223, a tower-side optical communication module 224, a node sensor 225 and a node central processing chip 226. The wavelength division multiplexer 221 is in optical fiber connection with the optical splitter 211, the wavelength division multiplexer 221 is in optical fiber connection with the photocell 222 and the tower-side optical communication module 224 respectively, the photocell 222 is connected in parallel with the super capacitor 223 and the node sensor 225, and the node sensor 225 and the tower-side optical communication module 224 are electrically connected to a node central processing chip 226;
wherein the node sensor 225 is a milliwatt power consumption sensor. Specifically, the milliwatt-level power consumption sensor comprises a camera and an image sensor. In this embodiment, each sensor node is provided with a camera and an image sensor. In other embodiments, one or more sensors of a camera and an image sensor are installed in each sensor node.
Furthermore, the photocell is made of an InP material in lattice matching with the InGaAs, and the InP material is completely transparent to the laser with the energy light center wavelength being more than 1400 nanometers.
The communication signal control method based on the laser energy supply network provided by the embodiment specifically comprises the following steps:
s201, setting optical fibers on the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side to be shared by a laser energy signal and an information communication signal, wherein the energy light center wavelength of the laser energy signal is more than 1400 nanometers and is larger than the information light center wavelength of the information communication signal;
wherein, in order to be better suitable for transmitting energy in a long distance, the energy light center wavelength of the laser energy signal is preferably 1450 nm, and the information light center wavelength of the information communication signal is preferably 1310 nm.
S202, connecting the photocell in parallel with a super capacitor and a node sensor, wherein the node sensor and the tower side optical communication module are electrically connected to the node central processing chip.
And S203, transmitting the information communication signal output by the optical splitter and the divided laser energy signal to a wavelength division multiplexer of each sensor node through an optical fiber.
S204, the wavelength division multiplexers of the sensor nodes distinguish laser energy signals and information communication signals and respectively transmit the laser energy signals and the information communication signals to the photocell and the tower side optical communication module;
the wavelength division multiplexer system has optical monitoring channels, and its main function is to monitor the transmission condition of each channel in the system. Inserting an optical monitoring signal with the wavelength of 1550 nanometers generated by the node into a transmitting end, and carrying out wave combination output with an optical signal of a main channel; at the receiving end, the received optical signal is demultiplexed, and an optical monitoring signal with 1550 nm wavelength and a traffic channel optical signal are respectively output. The frame synchronization byte, the service byte and the overhead byte used by the network manager are transmitted through the optical supervisory channel.
S205, each sensor node controls the corresponding tower side optical communication module to sequentially transmit sensing data to a server at the transformer substation side at preset time intervals according to a signal time-sharing strategy;
and the server at the transformer substation side is always in an open state, and each sensor node controls the corresponding tower side optical communication module to upload sensing data to the server at the transformer substation side at a time interval t in sequence according to a signal time-sharing strategy. For example, sensing data is uploaded to the server host on the substation side at intervals of 0.5S in sequence, for example, sensing data is uploaded at a time point T0 by the first sensor node on the tower side, the second sensor node senses data at a time point (T0 + 0.5) S, the third sensor node senses data at a time point (T0 + 1) S, and the … … nth sensor node senses data at a time point (T0 + (n-0.5)) S. According to the method, each sensor node controls the corresponding tower side optical communication module to sequentially upload the sensing data to the substation side server at a preset time interval according to a signal time-sharing strategy, so that the time for uploading the sensing data by each sensor node is staggered, the purpose of occupying a channel in a time-sharing manner to upload the sensing data is achieved, and the multi-sensor node is ensured to realize stable data uploading.
Further, in consideration of the practical application process, in a preferred embodiment of the present invention, the time for charging the capacitor of each sensor node to the discharge threshold is not completely consistent with the existing time difference for uploading the sensing data, which causes the problem of mutual interference of the same channel, in this embodiment, the time interval T is set to be 1.15 times of the maximum charging time T of the super capacitor of each sensor node, so as to effectively avoid the problem of mutual interference of the same channel.
EXAMPLE III
The embodiment provides a communication signal control method based on a laser energy supply network, which is applied to a communication signal control system based on the laser energy supply network. As shown in FIG. 5, the communication signal control system based on the laser energy supply network comprises a substation side 10 and a tower side 20. The transformer station side 10 is provided with a laser light source 11 and a server 12, and the pole tower side 20 is provided with a light splitter 211 connected with the laser light source 11 through optical fibers and a plurality of sensor nodes 22. Specifically, the optical splitter 211 is disposed in the junction box 21, and the laser energy signal and the information communication signal transmitted from the substation side 10 are distributed to the plurality of sensor nodes 22 through the optical splitter 211 as needed.
Further, each sensor node 22 is provided with a wavelength division multiplexer 221, a photocell 222, a super capacitor 223, a tower-side optical communication module 224, a node sensor 225 and a node central processing chip 226. The wavelength division multiplexer 221 is in optical fiber connection with the optical splitter 211, the wavelength division multiplexer 221 is in optical fiber connection with the photocell 222 and the tower-side optical communication module 224 respectively, the photocell 222 is connected in parallel with the super capacitor 223 and the node sensor 225, and the node sensor 225 and the tower-side optical communication module 224 are electrically connected to a node central processing chip 226;
the node sensor 225 is a micro watt power consumption sensor and a milliwatt power consumption sensor. Specifically, the micro watt level power consumption sensor comprises a temperature sensor, a humidity sensor, an air pressure sensor, a light intensity sensor and a wind speed sensor; the milliwatt level power consumption sensor comprises a camera and an image sensor. In this embodiment, each of the sensor nodes 22 is provided with a temperature sensor, a humidity sensor, an air pressure sensor, a light intensity sensor, a wind speed sensor, a camera, and an image sensor. In other embodiments, one or more of a temperature sensor, a humidity sensor, an air pressure sensor, a light intensity sensor, a wind speed sensor, a camera, and an image sensor are installed in each sensor node.
Furthermore, the photocell is made of an InP material in lattice matching with the InGaAs, and the InP material is completely transparent to the laser with the energy light center wavelength being more than 1400 nanometers.
The communication signal control method based on the laser energy supply network provided by the embodiment specifically comprises the following steps:
s301, setting optical fibers on the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side to be shared by a laser energy signal and an information communication signal, wherein the energy light center wavelength of the laser energy signal is more than 1400 nanometers and is larger than the information light center wavelength of the information communication signal;
wherein, in order to be better suitable for transmitting energy in a long distance, the energy light center wavelength of the laser energy signal is preferably 1450 nm, and the information light center wavelength of the information communication signal is preferably 1310 nm.
And S302, connecting the photocell in parallel with a super capacitor and a node sensor, wherein the node sensor and the tower side optical communication module are electrically connected to the node central processing chip.
And S303, transmitting the information communication signal output by the optical splitter and the divided laser energy signal to a wavelength division multiplexer of each sensor node through an optical fiber.
S304, the wavelength division multiplexers of the sensor nodes distinguish laser energy signals and information communication signals and respectively transmit the laser energy signals and the information communication signals to the photocell and the tower side optical communication module;
the wavelength division multiplexer system has optical monitoring channels, and its main function is to monitor the transmission condition of each channel in the system. Inserting an optical monitoring signal with the wavelength of 1550 nanometers generated by the node into a transmitting end, and carrying out wave combination output with an optical signal of a main channel; at the receiving end, the received optical signal is demultiplexed, and an optical monitoring signal with 1550 nm wavelength and a traffic channel optical signal are respectively output. The frame synchronization byte, the service byte and the overhead byte used by the network manager are transmitted through the optical supervisory channel.
S305, controlling the corresponding tower side optical communication modules by each sensor node according to a signal time-sharing strategy to sequentially upload sensing data to a server at the transformer substation side at preset time intervals;
and the server at the transformer substation side is always in an open state, and each sensor node controls the corresponding tower side optical communication module to upload sensing data to the server at the transformer substation side at a time interval t in sequence according to a signal time-sharing strategy. For example, the sensing data is uploaded to the server host on the substation side at intervals of 1.5S in sequence, for example, the sensing data is uploaded at the time point T0 by the first sensor node on the tower side, the second sensor node senses the data at the time point (T0 + 1.5) S, the third sensor node senses the data at the time point (T0 + 3) S, and the … … nth sensor node senses the data at the time point (T0 + (n-1.5)) S. According to the method, each sensor node controls the corresponding tower side optical communication module to sequentially upload the sensing data to the substation side server at a preset time interval according to a signal time-sharing strategy, so that the time for uploading the sensing data by each sensor node is staggered, the purpose of occupying a channel in a time-sharing manner to upload the sensing data is achieved, and the multi-sensor node is ensured to realize stable data uploading.
Further, in consideration of the practical application process, in another embodiment of the present invention, the problem of mutual interference of the same channel is caused by the fact that the time for charging the capacitance of each sensor node to the discharge threshold is not completely consistent with the existing uploading sensing data time difference, and this embodiment effectively avoids the problem of mutual interference of the same channel by setting the time interval T to be 1.2 times of the maximum charging time T of the super-capacitor of each sensor node.
Example four
The communication signal control method based on the laser energy supply network is applied to a communication signal control system based on the laser energy supply network. As shown in fig. 6, the communication signal control system based on the laser energy supply network comprises a substation side 10 and a tower side 20. The transformer station side 10 is provided with a laser light source 11 and a server 12, and the pole tower side 20 is provided with a light splitter 211 connected with the laser light source 11 through optical fibers and a plurality of sensor nodes 22. Specifically, the optical splitter 211 is disposed in the junction box 21, and the laser energy signal and the information communication signal transmitted from the substation side 10 are distributed to the plurality of sensor nodes 22 through the optical splitter 211 as needed.
Further, each sensor node 22 is provided with a wavelength division multiplexer 221, a photocell 222, a super capacitor 223, a tower-side optical communication module 224 and a node sensor 225. The wavelength division multiplexer 221 is connected with the optical splitter 211 through an optical fiber, the wavelength division multiplexer 221 is respectively connected with the photocell 222 and the tower-side optical communication module 224 through optical fibers, and the photocell 222 is connected with the super capacitor 223 and the virtual node sensor in parallel.
In this embodiment, in the communication signal control system based on the laser energy supply network, under the cloud computing service architecture, the node sensor 225 is a virtual node sensor, that is, the virtual node sensor is a non-electronic sensor, such as an optical fiber sensor, that is, a sensing state is reflected at the sensor node by analyzing data processing in an optical fiber, and a unified node central processing chip is used in a junction box on the tower side 20 to process data at a plurality of sensor nodes, that is, to obtain sensing signals of the virtual node sensors at each sensor node.
Further, the photovoltaic cell is made of an InP material which is lattice-matched with InGaAs, the InP material is completely transparent to the laser with the energy light center wavelength being more than 1400 nanometers, and the laser with the energy light center wavelength being more than 1400 nanometers can be converted with higher conversion efficiency through the photovoltaic cell.
Based on a system architecture that a unified node central processing chip is used in a junction box on a tower side 20 as shown in fig. 6 and a virtual sensor is adopted at each sensor node, as shown in fig. 7, the communication signal control method based on the laser energy supply network provided by the embodiment specifically includes the following steps:
s401, arranging optical fibers on the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side into a common optical fiber of a laser energy signal and an information communication signal, wherein the energy optical center wavelength of the laser energy signal is more than 1400 nanometers and is larger than the information optical center wavelength of the information communication signal;
s402, connecting the photocells in parallel with a super capacitor;
s403, transmitting the laser energy signals and the information communication signals divided by the optical splitter to a wavelength division multiplexer of each sensor node through an optical fiber;
s404, the wavelength division multiplexers of the sensor nodes distinguish laser energy signals and information communication signals and respectively transmit the laser energy signals and the information communication signals to the photocells and the tower-side optical communication modules of the sensor nodes;
and S405, each sensor node sequentially transmits sensing data to a server at the transformer substation side at preset time intervals corresponding to the tower side optical communication module according to a signal time-sharing strategy.
And the server at the side of the transformer substation is always in an open state, and each sensor node controls the corresponding tower side optical communication module to upload sensing data to the server at the side of the transformer substation at a time interval t in sequence according to a signal time-sharing strategy. For example, the sensing data are uploaded to the server host on the substation side at intervals of 1S in sequence, for example, the sensing data are uploaded at the time point T0 by the first sensor node on the tower side, the second sensor node senses the sensing data at the time point (T0 + 1) S, the third sensor node senses the sensing data at the time point (T0 + 2) S, and the … … nth sensor node senses the sensing data at the time point (T0 + (n-1)) S. According to the method, each sensor node controls the corresponding tower side optical communication module to sequentially upload the sensing data to the substation side server at a preset time interval according to a signal time-sharing strategy, so that the time for uploading the sensing data by each sensor node is staggered, the purpose of occupying a channel in a time-sharing manner to upload the sensing data is achieved, and the multi-sensor node is ensured to realize stable data uploading.
Further, in consideration of the problem that the same channel interferes with each other due to the fact that in the practical application process, the time difference of charging the capacitor of each sensor node to the discharge threshold is not completely consistent, in this embodiment, the time interval T is set to be 1.1 times of the maximum charging time T of the super capacitor of each sensor node, so that the problem of the same channel interfering with each other is effectively avoided.
EXAMPLE five
The communication signal control method based on the laser energy supply network is applied to a communication signal control system based on the laser energy supply network. As shown in fig. 8, the communication signal control system based on the laser energy supply network comprises a substation side 10 and a tower side 20. The transformer substation side 10 is provided with a laser light source 11, the pole tower side 20 is provided with a junction box 21 connected with the laser light source 11 through an optical fiber, and a node sensor 225 connected with the junction box 21 through an optical fiber, and the junction box 21 is provided with a wavelength division multiplexer 221 connected with the laser light source 11 through an optical fiber, a photocell 222, a node central processing chip 226, and a light splitter 211.
Specifically, the optical splitter 211 is disposed in the junction box 21, and the laser energy signal and the information communication signal transmitted from the substation side 10 are distributed to the plurality of node sensors 225 as needed through the optical splitter 211.
Further, one end of the wavelength division multiplexer 221 in the junction box is in optical fiber connection with the laser light source 11 on the tower side 20, the other end of the wavelength division multiplexer is in optical fiber connection with the photocell 222 and the optical communication module on the tower side, and a super capacitor 223 and a node central processing chip 226 are connected in parallel with the photocell 222; the tower side optical communication module, the node central processing unit and the information acquisition and conversion unit are all arranged on the node central processing chip 226.
In the present embodiment, the communication signal control system based on the laser energy supply network is under the cloud computing service architecture, the node sensor 225 is a virtual node sensor, that is, the virtual node sensor is a non-electronic sensor, such as an optical fiber sensor, that is, the sensing state is reflected by analyzing data processing in an optical fiber at the sensor node, and a unified node central processing chip 226 is used in the junction box of the tower side 20 to process data at a plurality of sensor nodes, that is, to obtain sensing signals of the virtual node sensors at the respective sensor nodes.
Further, the photovoltaic cell is made of an InP material which is lattice-matched with InGaAs, the InP material is completely transparent to the laser with the energy light center wavelength being more than 1400 nanometers, and the laser with the energy light center wavelength being more than 1400 nanometers can be converted with higher conversion efficiency through the photovoltaic cell.
Based on a system architecture that uses a unified node central processing chip 226 in a junction box on the tower side 20 as shown in fig. 8 and uses virtual node sensors at each sensor node, as shown in fig. 9, the present embodiment provides a communication signal control method based on a laser energy supply network, which specifically includes the following steps:
s501, arranging optical fibers on the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side into a common optical fiber of a laser energy signal and an information communication signal, wherein the energy optical center wavelength of the laser energy signal is more than 1400 nanometers and is larger than the information optical center wavelength of the information communication signal;
s502, connecting the photocells in parallel with a super capacitor and a node central processing chip;
s503, transmitting the laser energy signal and the information communication signal at the transformer station side to a wavelength division multiplexer of the junction box through an optical fiber;
s504, the wavelength division multiplexer distinguishes the laser energy signal and the information communication signal and transmits the signals to the photocell and the node central processing chip respectively;
and S505, each sensor node sequentially transmits sensing data to a server at the transformer substation side at preset time intervals corresponding to the tower side optical communication module according to a signal time-sharing strategy.
Preferably, the server on the substation side is always in an open state, and each sensor node controls the optical communication module corresponding to the tower side to upload sensing data to the server on the substation side at a time interval t in sequence according to a signal time-sharing strategy; and the time interval T is greater than 1.1-1.2 times of the maximum charging time T of the super capacitor of each sensor node. Due to the fact that when the optical fibers on the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side are set to be the same fibers of the laser energy signal and the information communication signal, the influence of a complex nonlinear refraction effect on the communication signal when the laser signal is transmitted is achieved, the time interval T of uploading sensing data of connected sensor nodes is set to be larger than 1.1-1.2 times of the maximum charging time T of the super capacitors of the sensor nodes, and the deviation rate of the communication signal can be basically controlled within 0.15%; the problem that the same channel is interfered with each other due to the fact that time difference of uploading sensing data exists when the time of charging the capacitor of each sensor node to the discharging threshold is not completely consistent can be effectively solved. In the experimental process, if the time interval T of uploading sensing data of the connected sensor nodes is set to be 1.01-1.09 times of the maximum charging time T of the super capacitor of each sensor node, the deviation rate of the communication signal can be basically controlled to be more than 1%, and the common fiber transmission requirements of long-distance energy supply over 5 kilometers and long-distance communication over 5 kilometers are difficult to meet.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a communication signal control method based on laser energy supply network, is applied to communication signal control system based on laser energy supply network, the system includes transformer substation side, shaft tower side, the transformer substation side is equipped with laser light source, the shaft tower side be equipped with the optical splitter of laser light source fiber connection and a plurality of sensor node, the sensor node be equipped with wavelength division multiplexer, photocell and shaft tower sidelight communication module that the optical splitter fiber connection to and node sensor and node central processing chip, its characterized in that, the method includes:
setting optical fibers on the transformer station side, the pole tower side and between the transformer station side and the pole tower side to be common fibers of a laser energy signal and an information communication signal, wherein the energy light center wavelength of the laser energy signal is more than 1400 nanometers and is larger than the information light center wavelength of the information communication signal;
the photocell is connected with a super capacitor and a node sensor in parallel, and the node sensor and the tower side optical communication module are electrically connected onto the node central processing chip;
the wavelength division multiplexer is used for transmitting the information communication signal output by the optical splitter and the divided laser energy signal to each sensor node through an optical fiber;
the wavelength division multiplexers of the sensor nodes distinguish laser energy signals and information communication signals and respectively transmit the laser energy signals and the information communication signals to the photocell and the tower side optical communication module;
and each sensor node controls the corresponding tower side optical communication module to sequentially transmit sensing data to a server at the side of the transformer substation at preset time intervals according to a signal time-sharing strategy.
2. The communication signal control method based on the laser energy supply network is characterized in that the server on the substation side is always in an open state, and each sensor node controls the optical communication modules corresponding to the tower side to upload sensing data to the server on the substation side at time intervals t in sequence according to a signal time-sharing strategy; and the time interval T is greater than 1.1-1.2 times of the maximum charging time T of the super capacitor of each sensor node.
3. The communication signal control method based on the laser energy supply network is characterized in that one or more sensors of a temperature sensor, a humidity sensor, an air pressure sensor, a light intensity sensor, a wind speed sensor, a camera and an image sensor are installed at each sensor node.
4. The communication signal control method based on the laser energy supply network is characterized in that a plurality of micro watt power consumption sensors and/or milliwatt power consumption sensors are installed on each sensor node.
5. The method as claimed in claim 1, wherein the photovoltaic cell is made of InP material lattice-matched to InGaAs, and the InP material is fully transparent to laser light with a central wavelength of 1400 nm or more.
6. A communication signal control system based on a laser energy supply network comprises a transformer substation side and a tower side, wherein a laser light source is arranged on the transformer substation side, a light splitter connected with a laser light source optical fiber and a plurality of sensor nodes are arranged on the tower side, the sensor nodes are provided with a wavelength division multiplexer connected with the light splitter optical fiber, a photocell, a tower side optical communication module, a node sensor and a node central processing chip, the photocell is connected with a super capacitor and the node sensor in parallel, and the node sensor and the tower side optical communication module are electrically connected onto the node central processing chip; the optical fibers on the substation side, the pole tower side and between the substation side and the pole tower side are arranged to be shared by a laser energy signal and an information communication signal, and the energy light center wavelength of the laser energy signal is more than 1400 nanometers and larger than the information light center wavelength of the information communication signal.
7. The communication signal control system based on the laser energy supply network according to claim 6, wherein each sensor node controls the corresponding tower side optical communication module to upload sensing data to the server at the substation side at time intervals t in sequence according to a signal time sharing strategy; and the time interval T is greater than 1.1-1.2 times of the maximum charging time T of the super capacitor of each sensor node.
8. The communication signal control system based on the laser energy supply network is characterized in that one or more sensors of a temperature sensor, a humidity sensor, an air pressure sensor, a light intensity sensor, a wind speed sensor, a camera and an image sensor are installed at each sensor node.
9. The laser-powered network-based communication signal control system as claimed in claim 6, wherein a plurality of micro-watt power consumption sensors and/or milliwatt power consumption sensors are installed at each sensor node.
10. The laser-powered network-based communication signal control system as claimed in claim 6, wherein the photovoltaic cell is fabricated from an InP material lattice-matched to InGaAs, and the InP material is fully transparent to laser light having a central wavelength of the energy light above 1400 nm.
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| CN114567087A (en) * | 2022-01-28 | 2022-05-31 | 国网江西省电力有限公司信息通信分公司 | Laser energy supply method and system of energy-information common transmission optical fiber |
| CN114567382B (en) * | 2022-02-23 | 2024-02-02 | 国网江西省电力有限公司信息通信分公司 | Optical fiber energy and information co-transmission optimizing system |
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