CN114531202B - Optical fiber energy and information co-transmission optimizing system - Google Patents
Optical fiber energy and information co-transmission optimizing system Download PDFInfo
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 147
- 239000003990 capacitor Substances 0.000 claims abstract description 144
- 238000004891 communication Methods 0.000 claims abstract description 126
- 230000003287 optical effect Effects 0.000 claims abstract description 93
- 238000012545 processing Methods 0.000 claims abstract description 47
- 238000005457 optimization Methods 0.000 claims abstract description 41
- 238000004458 analytical method Methods 0.000 claims abstract description 11
- 238000004422 calculation algorithm Methods 0.000 claims abstract description 10
- 238000004088 simulation Methods 0.000 claims abstract description 10
- 238000004364 calculation method Methods 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 9
- 238000013178 mathematical model Methods 0.000 claims description 8
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 29
- 230000005611 electricity Effects 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 13
- 230000005540 biological transmission Effects 0.000 description 27
- 238000007599 discharging Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
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- 238000004146 energy storage Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention provides an optical fiber energy and communication co-transmission optimization system which comprises a transformer substation side and a tower side, wherein the transformer substation side comprises a laser light source, the tower side comprises a junction box connected with the laser light source of the transformer substation side through optical fibers and one or more sensor nodes connected with the junction box through optical fibers, and an optical splitter, a wavelength division multiplexer, a photocell, a super capacitor and a node central processing chip are arranged on the junction box or the sensor nodes; when each sensor node is provided with a plurality of micro-watt level power consumption sensors and milliwatt level power consumption sensors in a mixing mode, the capacity value of the super capacitor is obtained through calculation according to the power consumption level coefficient of the sensor, wherein the power consumption level coefficient of the sensor is set to 4-5 according to a system simulation analysis algorithm, the photocell, the super capacitor and the sensor node can be effectively combined, and the electricity consumption requirement of an electricity utilization side in the optical fiber energy communication co-transmission process is met.
Description
Technical Field
The invention belongs to the technical field of power cables, and particularly relates to an optical fiber energy and information co-transmission optimization system.
Background
The information acquisition and information transmission technology based on the electronic technology is a main technical means of the current terminal layer of the Internet of things; the optical fiber communication system has the advantages of low unit loss, long transmission distance, strong electromagnetic interference resistance, simple laying and networking, safe and reliable communication data and the like, can meet the requirement of long-distance communication in complex electromagnetic environments to a large extent, and is suitable for monitoring application in various environments. However, due to the limitation of factors such as energy supply and the like, in special environments such as overhead transmission lines, underground pipe galleries and the like, a series of inconveniences are caused by the common energy supply problem of the electronic terminal, and the operation of a monitoring system is influenced by potential safety risks, so that the safe and effective operation of a power grid system is damaged. Monitoring and control distal end node side energy supply mode mainly includes among current electric power thing networking: 1) And 2) remote power transmission of power lines, and 2) local energy collection such as solar panels, electromagnetic induction and the like. The remote power transmission of the power line is difficult to apply in long-distance environments such as overhead and underground pipe galleries due to the defects of difficult construction and the like; the solar panel has strict requirements on natural environment, meteorological conditions and the like, particularly, the solar panel cannot realize energy supply in severe weather such as overcast, rainy, snowy and severe weather, and the electromagnetic induction type energy supply modes such as magnetic resonance and the like have the defects of limited power supply distance, short-circuit discharge and the like when high-voltage power is taken. Therefore, monitoring and controlling effective energy supply at the far-end node side in the electric power internet of things is an important technical problem.
In recent years, as shown in fig. 1, an optical fiber has been an important branch of modern optics, from a step-index distribution fiber to a complex-index distribution fiber, from simple light transmission to sensing of various physical quantities, and further, to transmission of energy. The optical fiber energy transmission technology can be used for realizing optical fiber supply of the far-end node of the optical communication network, realizing common transmission of energy and information, effectively solving the rapid arrangement requirement of the communication network in a complex field environment and having important application value.
The optical fiber energy transmission technology refers to a photoelectric conversion process of directly converting light energy into electric energy through a photovoltaic effect, and aims to convert laser energy transmitted by a far end into electric energy as far as possible and output the electric energy to a sensor terminal for use. Due to the development of power system automation and smart power grids, real-time monitoring of medium-high voltage transmission lines and power equipment becomes increasingly important, and intelligent electronic equipment and monitoring sensors in the transmission equipment are increasingly widely applied. In order to accurately monitor various physical quantities of electrical equipment, a large number of sensor nodes of various types are densely distributed in a region to be measured. Based on specific practice, there is a significant difference in power consumption for different types of sensors, and the sensors will reduce power consumption by adjusting the sampling rate and sleep mode according to the needs of the application and the perceived phenomenon. The power consumption of processing data at this time includes power consumption caused by a transistor switch and/or energy loss due to leakage current. Therefore, different sensor types collect and process data of different sizes and types, so that the energy loss rate of different nodes is different, the energy demand is different, and the same energy is different in the use time of different sensors.
Therefore, it is necessary to study how the energy transmitted from the transformer substation side can effectively meet the power consumption requirement of the sensor node in the existing optical fiber energy communication co-transmission process.
Disclosure of Invention
In order to solve the technical problems, the invention provides an optical fiber energy and communication co-transmission optimization system which effectively combines a photocell, a super capacitor and a sensor node, so that energy transmitted by a storage transformer station side is stored through the super capacitor, and the electricity consumption requirement of the sensor node in the optical fiber energy and communication co-transmission process is met.
The embodiment of the invention provides an optical fiber energy and communication co-transmission optimization system, which comprises a transformer station side and a tower side, wherein the transformer station side comprises a laser light source and is characterized in that: the tower side comprises a junction box connected with a laser light source optical fiber of the transformer substation side and one or more sensor nodes connected with the junction box optical fiber, and a beam splitter, a wavelength division multiplexer, a photocell, a super capacitor and a node central processing chip are arranged on the junction box; setting optical fibers at the transformer substation side, the tower side and between the transformer substation side and the tower side to be a common 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 more than the information optical center wavelength of the information communication signal;
When each sensor node is provided with a plurality of micro-watt level power consumption sensors and milliwatt level power consumption sensors, the capacity value of the super capacitor is selected by establishing the following mathematical model:
wherein, C represents the capacity value of the super capacitor, and the unit F (Farad); u (U) 1 Representing the operating voltage value of the sensor node in V (volts); i 1 Representing the working average current value of a micro-watt level power consumption sensor, and obtaining a unit A (ampere); i 2 Representing milliwatt level power consumption sensor operating levelAverage current value, unit a (amperes); i 3 Representing the working average current value of other parts except the sensor, such as MCU, communication module and the like, and the unit is A (ampere); t represents the working time of the sensor node, and the unit hour (h); u (U) 2 Representing the discharge start threshold of the super capacitor, and the unit V (volt); u (U) 3 Representing the discharge cut-off threshold of the super capacitor, and the unit V (volt); k represents a sensor power consumption magnitude coefficient;
the capacity value of the super capacitor is obtained through calculation according to the power consumption magnitude coefficient of the sensor, wherein the power consumption magnitude coefficient of the sensor is set to be 4-5 according to a system simulation analysis algorithm.
Preferably, the micro-watt level power consumption sensor is any one of a temperature sensor, a humidity sensor, an air pressure sensor, a light intensity sensor and a wind speed sensor, and the milliwatt level power consumption sensor is an image sensor.
Preferably, the junction box comprises a beam splitter connected with the laser light source optical fiber, and the sensor node comprises a wavelength division multiplexer, a photocell, a tower side optical communication module, a node central processing chip and a node sensor which are connected with the beam splitter optical fiber; the photocell is connected with a super capacitor and the node sensor in parallel, and the node sensor and the tower side light communication module are electrically connected to a node central processing chip.
Preferably, the junction box comprises a wavelength division multiplexer, a photocell, a tower side optical communication module, a node central processing chip and a beam splitter, wherein one end of the wavelength division multiplexer is connected with a laser light source optical fiber at the side of the tower, and the other end of the wavelength division multiplexer is respectively connected with the photocell and the tower side optical communication module optical fibers; and the photocell is connected with a super capacitor and a node central processing chip in parallel, and one or more sensor nodes are connected with the optical fiber of the optical splitter.
Preferably, the sensing signal is obtained at the sensor node by analyzing data processing in the optical fiber.
Preferably, the photovoltaic cell is fabricated from InP material that is lattice matched to InGaAs; wherein the InP material is fully transparent to the laser of the band with the energy light center wavelength above 1400 nanometers.
Preferably, the energy optical center wavelength of the laser energy signal is 1450 nm, and the information optical center wavelength of the information communication signal is 1310 nm.
The above technical solutions in the optical fiber energy-communication co-transmission optimization system provided by the embodiments of the present invention have at least the following technical effects:
the sensor node splits received light energy and signals through the wavelength division multiplexer, the split light energy is stored in the photocell, the light energy stored in the photocell is converted into electric energy through a photoelectric conversion technology and stored in the super capacitor, the capacity value of the super capacitor is selected based on the characteristic coefficient of the sensor, the photocell, the super capacitor and the sensor node are effectively fused, energy storage is carried out through the super capacitor, and the electricity consumption requirement of the electricity consumption side in the optical fiber energy communication co-transmission process is met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art optical fiber;
FIG. 2 is a block diagram of an optical fiber energy-communication co-transmission optimization system according to an embodiment of the present invention;
FIG. 3 is a flowchart of an optical fiber energy-communication co-transmission optimization method according to a first embodiment of the present invention;
fig. 4 is a circuit diagram of a partial charge and discharge operation of a supercapacitor according to a first embodiment of the present invention;
FIG. 5 is a block diagram of an optical fiber energy-communication co-transmission optimization system according to a second embodiment of the present invention;
FIG. 6 is a block diagram of an optical fiber energy-communication co-transmission optimization system according to a third embodiment of the present invention;
FIG. 7 is a block diagram of an optical fiber energy-communication co-transmission optimization system according to a fourth embodiment of the present invention;
FIG. 8 is a flowchart of an optical fiber energy-communication co-transmission optimization method according to a fourth embodiment of the present invention;
FIG. 9 is a block diagram of a laser energy supply system of an energy co-transmission fiber according to a fifth embodiment of the present invention;
fig. 10 is a flowchart of a laser energy supply method of an energy co-transmission fiber according to a fifth embodiment of the present invention.
Reference numerals illustrate:
10-transformer substation side, 11-laser light source;
the system comprises a 20-pole tower side, a 21-junction box, a 211-beam splitter, a 22-sensor node, a 221-wavelength division multiplexer, a 222-photocell, a 223-super capacitor, a 224-pole tower side light communication module, a 225-node sensor and a 226-node central processing chip.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to illustrate embodiments of the invention and should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless explicitly defined otherwise.
Embodiments of the present invention will be further described below in terms of a number of examples. The embodiments of the present invention are not limited to the following specific embodiments. The implementation of the modification may be appropriately carried out within the scope not changing the claims.
The invention provides an optical fiber energy and communication co-transmission optimization system which comprises a transformer substation side and a tower side, wherein the transformer substation side comprises a laser light source, the tower side comprises a junction box connected with the laser light source of the transformer substation side through optical fibers and one or more sensor nodes connected with the junction box through optical fibers, and the junction box and/or the sensor nodes are provided with a beam splitter, a wavelength division multiplexer, a photocell, a super capacitor and a node central processing chip; setting optical fibers at the transformer substation side, the tower side and between the transformer substation side and the tower side to be a common 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 more than the information optical center wavelength of the information communication signal; when a plurality of first-type sensors and/or second-type sensors are installed on each sensor node, the capacity value of the super capacitor is selected according to the characteristic coefficients of the sensors, wherein the characteristic coefficients of the sensors are set to correspond to the first characteristic coefficients and the second characteristic coefficients of the first-type sensors and the second-type sensors respectively according to a system simulation analysis algorithm, and the second characteristic coefficients of the second-type sensors are larger than the first characteristic coefficients of the first-type sensors. The characteristic coefficients of the sensor are set at 2-5 according to a system simulation analysis algorithm, and as laser energy signals for supplying energy to each sensor node and information communication signals for communication are transmitted in a fiber, interference exists between the two signals, energy light for supplying energy fluctuates to a certain extent, the capacity value of the super capacitor is selected based on the characteristic coefficients of the sensor, the photocell, the super capacitor and the sensor node are effectively combined, and electric energy storage is carried out through the selected super capacitor, so that the power consumption requirement of the sensor node in the fiber energy communication co-transmission process can be effectively met.
Example 1
The optical fiber energy-communication co-transmission optimization method provided by the embodiment is applied to an optical fiber energy-communication co-transmission optimization system. As shown in fig. 2, the optical fiber energy communication co-transmission optimization system comprises a transformer station side 10 and a tower side 20. The substation side 10 is provided with a laser light source 11, and the tower side 20 is provided with a beam splitter 211 and a plurality of sensor nodes 22, which are connected to the laser light source 11 by optical fibers. 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 as needed via the optical splitter 211.
Further, each of the sensor nodes 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 connected with the optical fiber of the optical splitter 211, the wavelength division multiplexer 221 is connected with the photocell 222 and the tower side optical communication module 224 respectively, the photocell 222 is connected with the super capacitor 223 and the node sensor 225 in parallel, and the node sensor 225 and the tower side optical communication module 224 are electrically connected on the node central processing chip 226.
Wherein the node sensor 225 is a microwatts-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, 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 22. 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 is installed at each sensor node.
As shown in fig. 3, the optical fiber energy-communication co-transmission optimization method provided in this embodiment is applied to an optical fiber energy-communication co-transmission optimization system, and because the optical fibers at the substation side 10, the tower side 20 and between the substation side 10 and the tower side 20 are arranged to be the optical fiber shared by the laser energy signals and the information communication signals, the laser light source can be effectively converted by the optical fiber, the photocell and the super capacitor through the combination of the optical fiber, the photocell and the super capacitor, and the electric power meeting the electricity consumption requirement of the electricity consumption side can be obtained. Based on the above, the invention is mainly applicable to the information optical center wavelength of the laser energy signal in the optical fiber, wherein the energy optical center wavelength is more than 1400 nanometers and is larger than the information optical center wavelength of the information communication signal in the optical fiber, and the optical fiber energy information co-transmission optimization method specifically comprises the following steps:
S101, setting optical fibers at the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side as a laser energy signal and an information communication signal to be shared, wherein the energy optical center wavelength of the laser energy signal is more than 1400 nanometers and more than the information optical center wavelength of the information communication signal;
in some embodiments of the invention, the energy optical center wavelength of the laser energy signal in the optical fiber is 1400-1410 nm, 1410-1420 nm, 1420-1430 nm, 1440-1450 nm, 1450-1460 nm, 1460-1470 nm, 1470-1480 nm, 1490-1500 nm, 1510-1520 nm, 1530-1540 nm, 1550-1560 nm, 1560-1570 nm, 1570-1580 nm, 1580-1590 nm, 1590-1600 nm, 1610-1620 nm, 1620-1630 nm, 1630-1640 nm, 1640-1650 nm, 1650-1660 nm, 1660-1670 nm, 1670-1680 nm, 1680-1690 nm, 1690-1700 nm, etc., and the setting of the energy optical center wavelength of the laser energy signal in the optical fiber is configured to match the nominal amount of the photocell or supercapacitor.
In a preferred embodiment of the present invention, it is required to meet the common fiber transmission requirement of 5 km long range power supply and 5 km long range communication, such as the power supply using the light source with 810 nm center wavelength in the prior art, although the output energy is high, the transmission loss is larger as the transmission distance is longer, so the scheme is not suitable for the power supply requirement that the transmission distance exceeds the km magnitude. Meanwhile, the light source with 810 nanometer wave band is used as the energy source of the project, the requirement of energy and information common fiber transmission in one optical fiber cannot be met, and an optical fiber is additionally added to be used as a communication optical fiber, because the energy transmission optical fiber for transmitting 810 nanometer wave band light is a special multi-core optical fiber.
The optical fibers at the transformer substation side 10, the tower side 20 and between the transformer substation side 10 and the tower side 20 are arranged to be single optical fibers for sharing the laser energy signals and the information communication signals, the energy light center wavelength of the laser energy signals is more than 1400 nanometers and greater than the information light center wavelength of the information communication signals, and the common fiber transmission requirements of 5 km long-distance energy supply and 5 km long-distance communication can be realized by combining the photocell 222 and the super capacitor 223, and the power consumption requirements of each sensor node at the tower side are met.
In a preferred embodiment of the present invention, in order to be more suitable for long-distance energy transmission of more than 5 km, the energy optical center wavelength of the laser energy signal is preferably 1450 nm, and the information optical center wavelength of the information communication signal is preferably 1310 nm, so that both energy transmission and information transmission in one optical fiber can be satisfied, so that when the length of the power cable of the optical fiber is more than 5 km, according to the matching arrangement of the optical fiber, the photocell and the super capacitor, the output electric power obtained through the test can satisfy the electricity consumption requirement of the electricity consumption side, that is, the electricity consumption requirement at a plurality of sensor nodes.
S102, connecting the super capacitor and the node sensor in parallel with the photocell, wherein the node sensor and the tower side light communication module are electrically connected to the node central processing chip.
S103, the laser energy signals and the information communication signals which are separated by the optical splitter are transmitted to the wavelength division multiplexer through an optical fiber.
S104, the wavelength division multiplexer distinguishes laser energy signals and information communication signals and respectively transmits the signals to the photocell and the tower side optical communication module.
S105, the photocell converts light energy of the laser energy signal into electric energy and inputs the electric energy into the super capacitor.
And S106, intermittently supplying power to the sensor node by the super capacitor.
The super capacitor is characterized in that the photovoltaic cell converts laser energy signals in optical fibers into electric energy and outputs the electric energy to the super capacitor, when the super capacitor is in a charging state, the node sensor connected in parallel with the super capacitor is in a low power consumption mode, the electric energy converted by the photovoltaic cell is transmitted and stored into the super capacitor, the node sensor wakes the node central processing chip to monitor the voltage at two ends of a pin of the super capacitor every preset time in the low power consumption mode, when the voltage at two ends of the super capacitor is monitored to reach a discharging threshold, the super capacitor is in a discharging state, at the moment, the sensor node is in an operation mode, the node sensor acquires energy from the super capacitor and the photovoltaic cell simultaneously, and when the operation mode is completed, the sensor node is in the low power consumption mode, and the super capacitor starts to charge.
Further, the super capacitor 223 is shown in fig. 4 as a partial operation circuit diagram for charging and discharging. The charging and discharging process of the super capacitor 223 is as follows: the photocell 222, the super capacitor 223 and the node sensor 225 are connected in parallel, and the photocell 222 at P1 converts the energy light with the center wavelength of 1450 nm into electric energy and outputs the electric energy to the super capacitor 223 and the node sensor 225. When the super capacitor 223 is in a charged state, the node sensor 225 connected in parallel with the super capacitor 223 is in a low power consumption mode, and in the low power consumption mode, the whole resistance of the node sensor 225 reaches the megaohm level, and only microampere current is needed to maintain the low power consumption mode, so most of the energy of the photocell 222 is transmitted and stored in the super capacitor 223. Meanwhile, the node sensor 225 wakes up the system to monitor the voltage across the pins of the super capacitor 223 at regular intervals in the low power consumption mode, and when the node sensor 225 determines that the voltage across the super capacitor 223 reaches the discharge threshold, the super capacitor 223 starts to discharge. When the super capacitor 223 is in a discharging state, the node sensor 225 is in an operation mode, the overall resistance of the node sensor 225 is no longer maintained in the megaohm level, the resistor can fluctuate in the hundred-ohm and kiloohm level, the microampere-level current does not meet the normal and stable operation requirement of the node sensor 225, the node sensor 225 can simultaneously acquire energy from the super capacitor 223 and the photocell 222, the energy provided by the super capacitor 223 occupies a main part, and after the whole operation mode is completed, the node sensor 225 enters a low-power consumption mode again, and the super capacitor 223 starts to charge.
In some embodiments, the photocell is made of InP material which is lattice matched with InGaAs, and the InP material is fully transparent to the laser with the energy light center wavelength above 1400 nm, so that the combination of the optical fiber, the photocell and the super capacitor can meet the power consumption requirement of the power consumption side of the energy co-transmission optical fiber. When the energy optical center wavelength of the laser energy signal in the optical fiber is 1450 nanometers, the information optical center wavelength of the information communication signal is 1310 nanometers, and the laser energy signal with the wavelength of 1450 nanometers and the information communication signal with the wavelength of 1310 nanometers can present complex nonlinear light refraction phenomena in the same optical fiber cable, based on the configuration combination of the optical fiber, the photocell and the super capacitor, when the length of the electric power optical cable of the optical fiber is 5 kilometers, the output electric power obtained through testing can meet the electricity consumption requirement of an electricity consumption side, namely the electricity consumption requirement of a plurality of sensor nodes.
Through the steps, the optical splitter distributes optical energy and signals synchronously transmitted by the transformer substation side to different sensor nodes as required, the sensor nodes split the received optical energy and signals through the wavelength division multiplexer, the split optical energy is stored in the photocell, and the optical energy stored in the photocell is converted into electric energy through a photoelectric conversion technology and is stored in the super capacitor; the super capacitor for storing the energy transmitted by the transformer substation side realizes intermittent charging through the combination of the optical fiber, the photocell and the super capacitor, so that the technical problem that the energy transmitted to the electricity utilization side in the conventional optical fiber energy information co-transmission process is insufficient to meet the electricity utilization requirement of the electricity utilization side is solved.
Example two
The optical fiber energy-communication co-transmission optimization method provided by the embodiment is applied to an optical fiber energy-communication co-transmission optimization system. As shown in fig. 5, the optical fiber energy communication co-transmission optimization system comprises a transformer station side 10 and a tower side 20. The substation side 10 is provided with a laser light source 11, and the tower side 20 is provided with a beam splitter 211 and a plurality of sensor nodes 22, which are connected to the laser light source 11 by optical fibers. 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 as needed via the optical splitter 211.
Further, each of the sensor nodes 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 connected with the optical fiber of the optical splitter 211, the wavelength division multiplexer 211 is respectively connected with the photocell 222 and the tower side optical communication module 224, the photocell 222 is connected with the super capacitor 223 and the node sensor 225 in parallel, and the node sensor 225 and the tower side optical communication module 224 are electrically connected on the node central processing chip 226;
Wherein the node sensor 225 is a milliwatt level power consumption sensor. Specifically, the milliwatt level power consumption sensor comprises a camera and an image sensor. In this embodiment, a camera and an image sensor are mounted on each sensor node. In other embodiments, one or more of a camera and an image sensor is installed at each sensor node.
In the embodiment of the present invention, the node sensor 225 is an electronic sensor, and the sensing data of the electronic node sensor 225 is obtained through the node central processing chip 226 and analyzed to obtain the sensing information.
In this embodiment, an optical fiber energy signal co-transmission optimization method using an electronic node sensor and a node central processing chip 226 is provided, which specifically includes the following steps:
s201, setting optical fibers at the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side as a laser energy signal and an information communication signal to be shared, wherein the energy optical center wavelength of the laser energy signal is more than 1400 nanometers and more than the information optical center wavelength of the information communication signal;
Wherein, in order to be better suitable for long-distance energy transmission, the energy optical center wavelength of the laser energy signal is preferably 1450 nm, and the information optical center wavelength of the information communication signal is preferably 1310 nm.
S202, connecting the super capacitor and the node sensor in parallel with the photocell, wherein the node sensor and the tower side light communication module are electrically connected to the node central processing chip.
S203, the laser energy signals and the information communication signals which are separated by the optical splitter are transmitted to the wavelength division multiplexer through an optical fiber.
S204, the wavelength division multiplexer distinguishes laser energy signals and information communication signals and respectively transmits the signals to the photocell and the tower side optical communication module.
S205, the photocell converts the light energy of the laser energy signal into electric energy and inputs the electric energy into the super capacitor.
S206, intermittently supplying power to the sensor node by the super capacitor.
The method comprises the steps that laser energy signals in optical fibers are converted into electric energy by a photocell and output the electric energy to a super capacitor, when the super capacitor is in a charging state, a node sensor connected in parallel with the super capacitor is in a low power consumption mode, the electric energy converted by the photocell is transmitted and stored into the super capacitor, the node sensor wakes up a node central processing chip to monitor the voltage at two ends of a pin of the super capacitor every preset time in the low power consumption mode, when the voltage at two ends of the super capacitor is monitored to reach a discharging threshold, the super capacitor is in a discharging state, at the moment, the sensor node is in an operation mode, the node sensor acquires energy from the super capacitor and the photocell at the same time, and after the whole operation mode is completed, the sensor node is in the low power consumption mode, and the super capacitor starts to charge.
In the first and second embodiments, when a plurality of microwatts-level power consumption sensors or milliwatts-level power consumption sensors are installed on each sensor node 225, the capacity value of the supercapacitor 223 is selected by establishing the following mathematical model:
wherein, C represents the capacity value of the super capacitor, and the unit F (Farad); u (U) 1 Representing the operating voltage value of the sensor node in V (volts); i represents an operation average current value of the sensor node, and the unit is A (ampere); t represents the working time of the sensor node, and the unit is h (hours); u (U) 2 Representing the discharge start threshold of the super capacitor, and the unit V (volt); u (U) 3 Representing the discharge cut-off threshold of the super capacitor, and the unit V (volt); k represents a sensor power consumption magnitude coefficient.
In an embodiment of the present invention, since the sensor is an electronic sensor, the characteristic coefficient of the sensor is a power consumption magnitude coefficient. The capacity value of the super capacitor is obtained through calculation according to a power consumption magnitude coefficient of a sensor, wherein the power consumption magnitude coefficient of the sensor is set to be a first constant coefficient corresponding to the milliwatt magnitude power consumption sensor and a second constant coefficient corresponding to the micro watt magnitude power consumption sensor according to a system simulation analysis algorithm, and the first constant coefficient of the milliwatt magnitude power consumption sensor is larger than the second constant coefficient of the micro watt magnitude power consumption sensor.
Further, each sensor node is provided with one or more microwatts-level power consumption sensors of temperature, humidity, air pressure, light intensity and wind speed sensors, the capacity value of the super capacitor is set to be 2-3 according to the power consumption level coefficient of the sensor, and the power consumption level coefficient of the sensor is set to be 2-3 according to a system simulation analysis algorithm.
Further, one or more milliwatt-level power consumption sensors in a camera or an image sensor are installed at each sensor node, and then the sensor power consumption level coefficient of the super capacitor is set to 3-5 according to a system simulation analysis algorithm.
It should be noted that in a large optical fiber energy-communication co-transmission optimization system, the local system may use the electronic sensor, that is, one or more microwatts-level power consumption sensors or milliwatts-level power consumption sensors are installed at the sensor node of the local system, and the supercapacitor capacity value is selected by establishing the mathematical model one:
the capacity value of the super capacitor is selected based on the characteristic coefficient of the sensor, the photocell, the super capacitor and the sensor node are effectively fused or combined, and the selected super capacitor is used for storing electric energy, so that the power consumption requirement of the sensor node in the optical fiber energy communication co-sensing process can be effectively met. Because the laser energy signals for supplying energy to each sensor node and the information communication signals for communication are transmitted in the same optical fiber, the two signals interfere with each other, the energy light for supplying energy fluctuates to a certain extent, and through multiple experimental tests, the capacity value of the super capacitor is selected by establishing a mathematical model based on a plurality of microwatts-level power consumption sensors or milliwatts-level power consumption sensors, the fluctuation amplitude of the transmitted electric energy is controlled between 98.2% and 99.4%, and the power consumption requirements of a plurality of sensor nodes can be basically and stably met.
Example III
The optical fiber energy-information co-transmission optimization method provided by the embodiment is applied to an optical fiber energy-information co-transmission optimization system. As shown in fig. 6, the optical fiber energy communication co-transmission optimization system comprises a transformer station side 10 and a tower side 20. The substation side 10 is provided with a laser light source 11, and the tower side 20 is provided with a beam splitter 211 and a plurality of sensor nodes 22, which are connected to the laser light source 11 by optical fibers. 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 as needed via the optical splitter 211.
Further, each of the sensor nodes 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 connected with the optical fiber of the optical splitter 211, the wavelength division multiplexer 221 is respectively connected with the photocell 222 and the tower side optical communication module 224, the photocell 222 is connected with the super capacitor 223 and the node sensor 225 in parallel, and the node sensor 225 and the tower side optical communication module 224 are electrically connected on the node central processing chip 226;
Wherein the node sensor 225 is a hybrid of a micro-watt level power consumption sensor and a milliwatt level power consumption sensor. Specifically, the micro watt level power consumption sensor comprises one of 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 one of a camera and an image sensor. In this embodiment, 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 of the sensor nodes 22. 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 is installed at each sensor node.
In the embodiment of the present invention, the node sensor 225 is an electronic sensor, and the sensing data of the electronic node sensor is obtained through the node central processing chip 226 for analysis processing to obtain sensing information.
In the third embodiment, when a plurality of microwatts-level power consumption sensors and milliwatts-level power consumption sensors are installed in each sensor node, the supercapacitor capacity value is selected by establishing the following mathematical model two:
Wherein, C represents the capacity value of the super capacitor, and the unit F (Farad); u (U) 1 Representing the operating voltage value of the sensor node in V (volts); i 1 Representing the working average current value of a micro-watt level power consumption sensor, and obtaining a unit A (ampere); i 2 Representing the working average current value of a milliwatt level power consumption sensor, and the unit is A (ampere); i 3 Representing other than sensors, e.g. MCU, communicationA module and other parts work average current value, namely a unit A (ampere); t represents the working time of the sensor node, and the unit is h (hours); u (U) 2 Representing the discharge cut-off threshold of the super capacitor, and the unit V (volt); u (U) 3 Representing the discharge cut-off threshold of the super capacitor, and the unit V (volt); k represents a sensor power consumption magnitude coefficient.
In an embodiment of the present invention, since the sensor is an electronic sensor, the characteristic coefficient of the sensor is a power consumption magnitude coefficient. The capacity value of the super capacitor is obtained through calculation according to the power consumption magnitude coefficient of the sensor, wherein the power consumption magnitude coefficient of the sensor is set to be 4-5 according to a system simulation analysis algorithm.
It should be noted that in a large optical fiber energy-communication co-transmission optimization system, the local system may use the electronic sensor, that is, when the sensor node of the local system is provided with a mixture of a plurality of microwatts-level power consumption sensors and milliwatts-level power consumption sensors, the capacity value of the super capacitor is selected by establishing the mathematical model two:
The capacity value of the super capacitor is selected based on the characteristic coefficient of the sensor, the photocell, the super capacitor and the sensor node can be effectively fused or combined, and the selected super capacitor is used for storing electric energy, so that the electricity consumption requirement of the sensor node in the optical fiber energy communication co-sensing process can be effectively met. Because the laser energy signals for supplying energy to each sensor node and the information communication signals for communication are transmitted in the same optical fiber in a common mode, interference exists between the two signals, energy light for supplying energy fluctuates to a certain extent, and through multiple experimental tests, the capacity value of the super capacitor is selected by establishing a mathematical model based on the mixing of a plurality of microwatts-level power consumption sensors and milliwatts-level power consumption sensors, the fluctuation amplitude of the transmitted electric energy is controlled between 97.4% and 99.2%, and the power consumption requirements of a plurality of sensor nodes can be basically and stably met.
In this embodiment, the method for providing the electronic node sensor and the node central processing chip 226 specifically includes the following steps:
s301, setting optical fibers at the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side as a laser energy signal and an information communication signal to be shared, wherein the energy optical center wavelength of the laser energy signal is more than 1400 nanometers and more than the information optical center wavelength of the information communication signal;
Wherein, in order to be better suitable for long-distance energy transmission, the energy optical center wavelength of the laser energy signal is preferably 1450 nm, and the information optical center wavelength of the information communication signal is preferably 1310 nm.
S302, the super capacitor and the node sensor are connected in parallel with the photocell, and the node sensor and the tower side light communication module are electrically connected to the node central processing chip.
S303, the laser energy signals and the information communication signals which are separated by the optical splitter are transmitted to the wavelength division multiplexer through an optical fiber.
S304, the wavelength division multiplexer distinguishes laser energy signals and information communication signals and respectively transmits the signals to the photocell and the tower side optical communication module.
And S305, converting the light energy of the laser energy signal into electric energy by the photocell, and inputting the electric energy into the super capacitor.
S306, intermittently supplying power to the sensor node by the super capacitor;
the method comprises the steps that laser energy signals in optical fibers are converted into electric energy by a photocell and output the electric energy to a super capacitor, when the super capacitor is in a charging state, a node sensor connected in parallel with the super capacitor is in a low power consumption mode, the electric energy converted by the photocell is transmitted and stored into the super capacitor, the node sensor wakes up a node central processing chip to monitor the voltage at two ends of a pin of the super capacitor every preset time in the low power consumption mode, when the voltage at two ends of the super capacitor is monitored to reach a discharging threshold, the super capacitor is in a discharging state, at the moment, the sensor node is in an operation mode, the node sensor acquires energy from the super capacitor and the photocell at the same time, and after the whole operation mode is completed, the sensor node is in the low power consumption mode, and the super capacitor starts to charge.
Example IV
The optical fiber energy-communication co-transmission optimization method provided by the embodiment is applied to an optical fiber energy-communication co-transmission optimization system. As shown in fig. 7, the optical fiber energy communication co-transmission optimization system comprises a transformer station side 10 and a tower side 20. The substation side 10 is provided with a laser light source 11, and the tower side 20 is provided with a beam splitter 211 and a plurality of sensor nodes 22, which are connected to the laser light source 11 by optical fibers. 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 as needed via the optical splitter 211.
Further, each of the sensor nodes 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 fiber of the optical splitter 211, the wavelength division multiplexer 221 is respectively connected with the photocell 222 and the tower side optical communication module 224, and the photocell 222 is connected with the super capacitor 223 and the node sensor 225 in parallel.
In this embodiment, the optical fiber energy co-sensing optimization system is under a 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 sensor node 22 reflects the sensing state by analyzing the data processing in the optical fiber, and the junction box of the tower side 20 uses a unified node central processing chip to process the data at a plurality of sensor nodes, that is, obtain the sensing signals of the virtual node sensor at each sensor node.
Based on the system architecture that uses a unified node central processing chip in the junction box of the tower side 20 and uses the virtual sensor 225 at each sensor node as shown in fig. 7, the embodiment adopts the optical fiber energy-information co-transmission optimization method provided in fig. 8, which specifically includes the following steps:
s401, setting optical fibers at the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side as a laser energy signal and an information communication signal to be shared, wherein the energy optical center wavelength of the laser energy signal is more than 1400 nanometers and more than the information optical center wavelength of the information communication signal;
s402, connecting the super capacitor in parallel with the photocell;
s403, transmitting the laser energy signals and the information communication signals which are separated by the optical splitter to a wavelength division multiplexer through an optical fiber;
s404, the wavelength division multiplexer distinguishes laser energy signals and information communication signals to be respectively transmitted to the photocell and the optical communication module;
s405, converting the light energy of the laser energy signal into electric energy by the photocell and inputting the electric energy into the super capacitor;
s406, intermittently supplying power to the sensor node by the super capacitor;
The super capacitor is in a charging state, the node sensor connected in parallel with the super capacitor is in a low-power consumption mode, and the electric energy converted by the photocell is transmitted and stored into the super capacitor; when the voltage at two ends of the super capacitor reaches a discharge threshold, the super capacitor is in a discharge state, the sensor node is in an operation mode, the node sensor acquires energy from the super capacitor and the photocell at the same time, and when the operation mode is completed, the sensor node is in a low-power consumption mode, and the super capacitor starts to charge.
In some embodiments, the photocell is made of InP material which is lattice matched with InGaAs, and the InP material is fully transparent to the laser with the energy light center wavelength above 1400 nm, so that the combination of the optical fiber, the photocell and the super capacitor can meet the power consumption requirement of the power consumption side of the energy co-transmission optical fiber. When the energy optical center wavelength of the laser energy signal in the optical fiber is 1450 nanometers, the information optical center wavelength of the information communication signal is 1310 nanometers, the optical fiber, the photocell and the super capacitor are integrated or combined based on the configuration, and when the length of the power optical cable of the optical fiber is 5 kilometers, the output electric power obtained through testing can meet the electricity consumption requirement of an electricity consumption side, namely the electricity consumption requirement of a plurality of sensor nodes.
Example five
The optical fiber energy-communication co-transmission optimization method provided by the embodiment is applied to an optical fiber energy-communication co-transmission optimization system. As shown in fig. 9, the optical fiber energy communication co-transmission optimization system comprises a transformer station side 10 and a tower side 20. The substation side 10 is provided with a laser light source 11, the tower side 20 is provided with a junction box 21 connected with the laser light source 11 through optical fibers and a plurality of sensor nodes 225 connected with the junction box 21 through optical fibers, and the junction box 21 is provided with a wavelength division multiplexer 221, a photocell 222, a node central processing chip 226 and a beam splitter 211 connected with the laser light source 11 through optical fibers.
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 225 as needed through the optical splitter 211.
Further, one end of a wavelength division multiplexer 221 in the junction box 21 is connected with the laser light source 11 of the tower side 20 through optical fibers, the other end of the wavelength division multiplexer is respectively connected with the photocell 222 and the tower side optical communication module through optical fibers, 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 uniformly arranged on the node central processing chip 226.
In this embodiment, in the optical fiber energy co-sensing optimization system, under a 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 sensor node reflects a sensing state by analyzing data processing in an optical fiber, and a unified node central processing chip is used in a junction box of the tower side 20 to process data at a plurality of sensor nodes, that is, obtain sensing signals of the virtual node sensor at each sensor node.
Based on the system architecture that uses a unified node central processing chip in the junction box of the tower side 20 and adopts virtual sensors at each sensor node as shown in fig. 9, the embodiment adopts a method for optimizing optical fiber energy-information co-transmission, which specifically includes the following steps:
s501, setting optical fibers at the transformer substation side, the pole tower side and between the transformer substation side and the pole tower side as a laser energy signal and an information communication signal to be shared, wherein the energy optical center wavelength of the laser energy signal is more than 1400 nanometers and more than the information optical center wavelength of the information communication signal;
S502, connecting a super capacitor and a node central processing chip in parallel with the photocell;
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 laser energy signals and information communication signals to be respectively transmitted to the photocell and the node central processing chip;
s505, the photocell converts the light energy of the laser energy signal into electric energy, the electric energy is input into the super capacitor, and the super capacitor is used for supplying power to the node central processing chip and the sensor node;
when the super capacitor is in a charging state, the sensor node connected in parallel with the super capacitor is in a low-power consumption mode, and the electric energy converted by the photocell is transmitted and stored into the super capacitor; when the voltage at two ends of the super capacitor reaches a discharge threshold, the super capacitor is in a discharge state, at the moment, the sensor node is in an operation mode, the sensor node acquires energy from the super capacitor and the photocell at the same time, and when the operation mode is completed, the sensor node is in a low-power consumption mode, and the super capacitor starts to charge.
In some embodiments, the photovoltaic cell is fabricated from InP material lattice matched to InGaAs, which is fully transparent to laser light having an energy optical center wavelength above 1400 nm.
It should be noted that, since the sensor node uses a non-electronic sensor such as an optical fiber sensor, i.e., a virtual sensor as illustrated in fig. 9, the characteristic coefficient of the virtual sensor may be a data transmission rate, and the capacity value of the super capacitor is calculated based on the data transmission rate of the sensor. In a large-scale optical fiber energy-communication co-transmission optimization system, the local system can adopt the non-electronic sensor; that is, in some embodiments of the present invention, a mixture of electronic and non-electronic sensors may be employed, or non-electronic sensors may be employed entirely, without limitation. Preferably, the data transmission rate of the non-electronic sensor or the characteristic coefficient of the mixture of the electronic sensor and the non-electronic sensor is set to be 2-5 according to a system simulation analysis algorithm, the fluctuation amplitude of the transmitted electric energy is controlled to be 97.2% -99.0%, and the power consumption requirement of the node central processing chip can be basically and stably met.
It should be noted that, in the above embodiments of the present invention, as shown in fig. 2, 5, 6-7, and 9, the power optical cable between the substation side and the tower side is one or more optical fibers, and each optical fiber is configured to share a laser energy signal with an information communication signal, and the energy optical center wavelength of the laser energy signal is above 1400 nm and greater than the information optical center wavelength of the information communication signal, so that the power demand of the electricity side of the energy co-transmitting optical fiber can be satisfied by combining the optical fiber, the photocell, and the super capacitor. When the energy optical center wavelength of the laser energy signal in the optical fiber is 1450 nanometers, the information optical center wavelength of the information communication signal is 1310 nanometers, and based on the configuration combination of the optical fiber, the photocell and the super capacitor, when the length of the electric power optical cable of the optical fiber is 5 kilometers, the output electric power obtained through testing can meet the electric power requirement of an electric side, such as a plurality of sensor nodes or a central processing chip.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. The utility model provides an optic fibre can be believed to pass optimizing system altogether, includes transformer substation's side, shaft tower side, the transformer substation side includes laser light source, its characterized in that: the tower side comprises a junction box connected with the laser light source optical fiber of the transformer substation side and one or more sensor nodes connected with the junction box optical fiber, the junction box comprises a beam splitter connected with the laser light source optical fiber, the sensor nodes comprise a wavelength division multiplexer, a photocell, a tower side optical communication module, a node central processing chip and a node sensor, and the wavelength division multiplexer is connected with the beam splitter optical fiber; the photocell, the super capacitor and the wavelength division multiplexer are connected in parallel, the super capacitor is respectively connected with the pole-tower side optical communication module, the node central processing chip and the node sensor, and the node sensor and the pole-tower side optical communication module are electrically connected to the node central processing chip; setting optical fibers at the transformer substation side, the tower side and between the transformer substation side and the tower side to be a common 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 more than the information optical center wavelength of the information communication signal;
When each sensor node is provided with a plurality of micro-watt level power consumption sensors and milliwatt level power consumption sensors, the capacity value of the super capacitor is selected by establishing the following mathematical model:
wherein, C represents the capacity value of the super capacitor, and the unit F (Farad); u (U) 1 Representing the operating voltage value of the sensor node in V (volts); i 1 Representing the working average current value of a micro-watt level power consumption sensor, and obtaining a unit A (ampere); i 2 Representing the working average current value of a milliwatt level power consumption sensor, and the unit is A (ampere); i 3 The average current value of the work of the beam splitter, the wavelength division multiplexer, the photocell, the super capacitor, the pole side light communication module and the node central processing chip is expressed in the unit of A (ampere); t represents the working time of the sensor node, and the unit hour (h); u (U) 2 Representing the discharge start threshold of the super capacitor, and the unit V (volt); u (U) 3 Representing the discharge cut-off threshold of the super capacitor, and the unit V (volt); k represents a sensor power consumption magnitude coefficient;
the capacity value of the super capacitor is obtained through calculation according to a sensor power consumption magnitude coefficient, wherein the sensor power consumption magnitude coefficient is set to 4-5 according to a system simulation analysis algorithm.
2. The optical fiber energy co-transmission optimization system according to claim 1, wherein: the micro-watt level power consumption sensor is any one of temperature, humidity, air pressure, light intensity and wind speed sensors, and the milliwatt level power consumption sensor is an image sensor.
3. The optical fiber energy co-transmission optimization system of claim 1, wherein the sensing signal is obtained at the sensor node by analyzing data processing in the optical fiber.
4. The optical fiber energy co-transmission optimization system of claim 1, wherein the photocell is fabricated from InP material that is lattice matched to InGaAs; wherein the InP material is fully transparent to the laser of the band with the energy light center wavelength above 1400 nanometers.
5. The optical fiber energy co-transmission optimization system of claim 1, wherein the laser energy signal has an energy optical center wavelength of 1450 nm and the information communication signal has an information optical center wavelength of 1310 nm.
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