CN103762938B - A kind of intelligent electric power management circuit being applicable to optical fiber energy supplying system - Google Patents
A kind of intelligent electric power management circuit being applicable to optical fiber energy supplying system Download PDFInfo
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- CN103762938B CN103762938B CN201410059348.8A CN201410059348A CN103762938B CN 103762938 B CN103762938 B CN 103762938B CN 201410059348 A CN201410059348 A CN 201410059348A CN 103762938 B CN103762938 B CN 103762938B
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- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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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
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- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The present invention relates to optical fiber energy supply technical field, particularly relate to a kind of intelligent electric power management circuit being applicable to optical fiber energy supplying system. Comprise photovoltaic cell, preceding stage DC-DC module, energy-storage module, switch, power supply monitoring module, buck DC-DC module and low-power consumption microprocessor; Described switch comprises the first switch, the 2nd switch, the 3rd switch and the 4th switch; Described low-power consumption microprocessor has inner A/D module, the first inner I/O port, the 2nd inner I/O port and power supply port; The output terminal of photovoltaic cell is connected with the inside A/D module of low-power consumption microprocessor, energy-storage module, the first switch and the 3rd switch respectively by preceding stage DC-DC module; The output terminal of the first switch is connected with power supply monitoring module one end, and the power supply monitoring module the other end is connected to the voltage controling end of the 2nd switch. This circuit efficiency height, cost are low, power supply management intelligence, are applicable to the real-time using electricity system of low-power consumption, are also applicable to high power consumption and are interrupted using electricity system.
Description
Technical field
The present invention relates to optical fiber energy supply technical field, particularly relate to a kind of intelligent electric power management circuit being applicable to optical fiber energy supplying system.
Background technology
In the many application of energy supplying system, the sensor of far-end, frequency transformer and other communication equipment often can be subject to the impact of high frequency noise, electromagnetic interference, magnetic field or high-voltage, and these environment can affect operation and the performance of electronics. Optical fiber energy supply can successfully address these problems. So-called optical fiber energy supply, utilizes laser apparatus exactly, and by Optical Fiber Transmission, the opto-electronic conversion through receiving end realizes energy supply. Due to the use of optical fiber, the system based on this kind of technology possesses electromagnetic interference immunity, and corrosion-resistant and high-frequency signal and lightning affect the character such as insensitive. In addition, the volume of optical fiber is much smaller than copper cable, and therefore optical fiber energy supply technology is suitable for long range propagation and operation.
In the environment of charge sensitive, the spark that the fracture of any cable causes is all extremely dangerous. Optical fiber can not produce any spark, and therefore optical fiber energy supply technology is particularly suitable for these special environment.
In general, optical fiber energy supplying system comprises control base station, fiber optic links part and far-end unit three part. Certainly, actual system can change according to different application.
First unjacketed optical fiber energy supplying system sets up by the DeLoach of Bell Laboratory and his colleague, a set of long-range laser energy supply sound warning system of their framework. In optical fiber energy supply field, the work with milestone significance is completed in 1979 by people such as Bell Laboratory Miller. That is the two-direction speech sound transmission system between a set of control base station and optical functions far-end, and system transfers distance reaches 1.1 kilometers. That cover two way voice communication system uses pulsed modulation technical transmission, and transport delay is 11.5 microseconds. Data signal as exchange partial stack, is then transferred to laser energy supply far-end and realizes transmitted in both directions on direct component; The photo-detector of system carries out Data Detection and opto-electronic conversion.
Due to system only number milliwatt available light power, early stage optical fiber energy supplying system can only process the analog or digital optical signal of very lower velocity. In late 1980s, a set of wavelength-division multiplex Unidirectional light interconnection system based on optical fiber energy supply technology is implemented. In this cover system, remote receiver is the only 2.6mw of power consumption during 22.SMbpS in transmission speed, does not almost have optical crosstalk between power supply luminous energy and data optical signal. 2007, a set of real-time video sensing system success of long-range optical functions with 300,000 pixels and 100MbpS transmission speed was realized by Karlsruhe, Germany university high frequency and quantum electron institute, and this system, when clock requency is 12.5MHZ, only consumes 40mW. Its great advantage is work agreement so that whole system discontinuity also can be allowed to work when optical fiber energy supply is not enough.
But all there is the situation of electricity shortage in above said optical fiber energy supplying system, is only suitable for some low-power dissipation systems. (can not use as shown in the figure here) existing electric power management circuit is by photovoltaic cell, and energy-storage module, DC-DC module forms, and this electric power management circuit energy utilization efficiency is low, and management is intelligence not, can only be applicable to specific occasion, cannot be applicable to most of occasion.
Usually, the method solving optical fiber energy supply deficiency improves laser power, selects appropriate optical fibers, it is to increase power conversion efficiency (pce) etc., it is contemplated that the reason in cost and technology, inventing suitable electric power management circuit becomes a feasible selection.
Summary of the invention
It is an object of the invention to provide a kind of intelligent electric power management circuit being applicable to optical fiber energy supplying system for above-mentioned weak point, solve the situation that optical fiber energy supplying system all exists electricity shortage. Use photovoltaic cell that laser beam energy is converted to electric energy, by this intelligent electric power management circuit, power to some special electricity consumption occasions.
A kind of intelligent electric power management circuit being applicable to optical fiber energy supplying system takes following technical scheme to realize: a kind of intelligent electric power management circuit being applicable to optical fiber energy supplying system comprises photovoltaic cell, preceding stage DC-DC (direct current conversion) module, energy-storage module, switch, power supply monitoring module, the conversion of buck DC-DC(direct current) module and low-power consumption microprocessor; Described switch comprises the first switch, the 2nd switch, the 3rd switch and the 4th switch; Described low-power consumption microprocessor has inner A/D module, the first inner I/O port, the 2nd inner I/O port and power supply port; The output terminal of photovoltaic cell is connected with the inside A/D module of low-power consumption microprocessor, energy-storage module, the first switch and the 3rd switch respectively by preceding stage DC-DC module; The output terminal of the first switch is connected with power supply monitoring module one end, and the other end of power supply monitoring module is connected to the voltage controling end of the 2nd switch; The output terminal of the 3rd switch is connected with one end of buck DC-DC module, and the other end of buck DC-DC module is connected with the power supply port of low-power consumption microprocessor; The inner I/O port of the 2nd of low-power consumption microprocessor is connected to the voltage controling end of the 4th switch; The input terminus of the 4th switch is connected with the voltage controling end of the 3rd switch and the input terminus of the 2nd switch.
Described photovoltaic cell adopts photoelectric transformation efficiency to be greater than 30%, and operating voltage scope is 200mV ~ 5.5V high efficiency photovoltaic cell, and described high efficiency photovoltaic cell is the photovoltaic cell that the efficiency such as GaAs photovoltaic cell or condensation photovoltaic battery is higher.
Described preceding stage DC-DC module carries MPPT(peak power point and follows the tracks of), make photovoltaic cell always work near peak power point; Described preceding stage DC-DC module input voltage scope is 200mV ~ 5.5V, and output voltage is 3.3V ~ 5V.
Described energy-storage module uses the series-parallel connection of super capacitor to realize, and super capacitor has another name called electrochemical capacitor, be a kind of between traditional capacitor and battery, there is the power supply of property, main rely on electrostatic double layer and Redox pseudocapacitance Charge Storage electric energy.
Described switch adopts transistor and field effect transistor, and wherein the first switch and the 3rd switch select triode transistor, lower level conducting; 2nd switch and the 4th switch select MOS field effect transistor, high level conducting.
The voltage monitoring value of described power supply monitoring module is set as 1.8V ~ 5V, when the input voltage of power supply monitoring module is greater than this set(ting)value, exports high level.
The efficiency of described buck DC-DC is more than 80%, and output voltage is 1.8V ~ 5V.
The external low-power consumption AD of described low-power consumption microprocessor.
Described low-power consumption microprocessor comprises low-power scm, low-power consumption DSP(digital signal processor) and FPGA(field-programmable gate array) etc.
Described low-power consumption microprocessor adopts commercially available low-power consumption microprocessor.
Principle of work: when a kind of intelligent electric power management circuit being applicable to optical fiber energy supplying system uses, with stable laser beam irradiation photovoltaic cell, limited luminous energy is converted to electric energy; Preceding stage DC-DC module carries MPPT, thus makes photovoltaic cell be operated near peak power point; First switch is in conducting state (lower level) at the beginning, 3rd switch is in disconnection state (high level), 2nd switch is in disconnection state (lower level), and the 4th switch is in disconnection state (lower level), and now the super capacitor of energy-storage module is in charging state; When super capacitor both end voltage is charged to the threshold voltage of power supply monitoring module installation, the 2nd switch conducting (high level), the 3rd switch conducting (lower level), buck DC-DC exports suitable Voltage rails and allows low-power consumption microprocessor work; Low-power consumption microprocessor is at moment conducting the 4th switch, disconnect the first switch, simultaneously, the inside A/D module of low-power consumption microprocessor surveys super capacitor both end voltage, when its magnitude of voltage is lower than 2.2V, and conducting first switch, disconnect the 4th switch, the 2nd switch and the 3rd switch, at this moment, super capacitor is in again charging state, ceaselessly circulates like this.
It is relatively big that above-mentioned working process is applicable to system power dissipation, when the electric energy that photovoltaic cell provides is insufficient. when the electric energy that photovoltaic cell provides is sufficient, said process can be reduced to: the first switch is in conducting state (lower level) at the beginning, 3rd switch is in disconnection state (high level), 2nd switch is in disconnection state (lower level), 4th switch is in disconnection state (lower level), now super capacitor is in charging state, when super capacitor both end voltage is charged to the threshold voltage of power supply monitoring module installation, 2nd switch conducting (high level), 3rd switch conducting (lower level), buck DC-DC exports suitable Voltage rails and allows low-power consumption microprocessor work, low-power consumption microprocessor is at moment conducting the 4th switch, disconnect the first switch.
Useful effect: the preceding stage DC-DC used by the present invention, power supply monitoring module, buck DC-DC and microprocessor are all integrated chips, cheap, stable performance. This circuit efficiency height, cost is low, and power supply management intelligence, had both been applicable to the real-time using electricity system of low-power consumption, is also applicable to high power consumption and is interrupted using electricity system; Extract luminous energy ability strong, both it had been applicable to extremely low power dissipation system, and had also been applicable to the system that power consumption is bigger, and be the reliable selection of optical fiber energy transfer system.
Accompanying drawing explanation
Below with reference to accompanying drawing, the invention will be further described:
Fig. 1 is the structure block diagram of existing electric power management circuit.
Fig. 2 is the P-V rational curve of photovoltaic cell.
Fig. 3 is the structure block diagram of optical fiber energy supplying system.
Fig. 4 is the structure block diagram that the present invention is applicable to the intelligent electric power management circuit of optical fiber energy supplying system.
Fig. 5 is a kind of embodiment structure block diagram of the present invention.
In figure: 1, laser beam, 2, photovoltaic cell, 3, preceding stage DC-DC module, 4, energy-storage module, 5, power supply monitoring module, 6, buck DC-DC module, 7, low-power consumption microprocessor, 8, inner A/D module, 9, first inner I/O port, 10, 2nd inner I/O port, 11, power supply port, 12, first switch (L), 13, 3rd switch 3(L), 14, 2nd switch (H), 15, 4th switch (H), 16, base station, 17, optical fiber, 18, far-end unit, 19, DC-DC module, 20, laser apparatus, 21, intelligent electric power management circuit, 22, first low-power consumption sensor, 23, 2nd low-power consumption sensor.
Embodiment
It it is the structure block diagram of existing electric power management circuit shown in Fig. 1, existing electric power management circuit is made up of photovoltaic cell 2, energy-storage module 4 and DC-DC module 19, and this electric power management circuit energy utilization efficiency is low, and management is intelligence not, specific occasion can only be applicable to, most of occasion cannot be applicable to.
Shown in Fig. 2, preceding stage DC-DC module 3 carries MPPT, thus photovoltaic cell is operated near peak power point.
Being the structure block diagram of optical fiber energy supplying system shown in Fig. 3, general optical fiber energy supplying system comprises control base station 16, optical fiber 17 links part and far-end unit 18 3 part.
With reference to accompanying drawing 4 ~ 5, the intelligent electric power management circuit of energy supplying system of the present invention comprises photovoltaic cell 2, preceding stage DC-DC module 3, energy-storage module 4, switch, power supply monitoring module 5, buck DC-DC module 6 and low-power consumption microprocessor 7; Described switch comprises the first switch 12, the 2nd switch 14, the 3rd switch 13 and the 4th switch 15; Described low-power consumption microprocessor 7 has the inner I/O port 9 of inner A/D module 8, first, the 2nd inner I/O port 10 and power supply port 11; The output terminal of photovoltaic cell 2 is connected with the inside A/D module 8 of low-power consumption microprocessor 7, energy-storage module 4, first switch 12 and the 3rd switch 13 respectively by preceding stage DC-DC module 3; The output terminal of the first switch 12 is connected with power supply monitoring module 5 one end, and the other end of power supply monitoring module 5 is connected to the voltage controling end of the 2nd switch 14; The output terminal of the 3rd switch 13 is connected with one end of buck DC-DC module 6, and the other end of buck DC-DC module 6 is connected with the power supply port 11 of low-power consumption microprocessor 7; The inner I/O port 10 of the 2nd of low-power consumption microprocessor 7 is connected to the voltage controling end of the 4th switch 15; The input terminus of the 4th switch 15 is connected with the voltage controling end of the 3rd switch 13 and the input terminus of the 2nd switch 14;
Described photovoltaic cell 2 adopts photoelectric transformation efficiency to be greater than 30%, and operating voltage scope is 200mV ~ 5.5V high efficiency photovoltaic cell, and described high efficiency photovoltaic cell is the photovoltaic cell that the efficiency such as GaAs photovoltaic cell or condensation photovoltaic battery is higher.
Described preceding stage DC-DC module 3 carries MPPT(peak power point and follows the tracks of), make photovoltaic cell 2 always work near peak power point; Described preceding stage DC-DC module 3 input voltage scope is 200mV ~ 5.5V, and output voltage is 3.3V ~ 5V.
Described energy-storage module 4 uses the series-parallel connection of super capacitor to realize, and super capacitor has another name called electrochemical capacitor, be a kind of between traditional capacitor and battery, there is the power supply of property, main rely on electrostatic double layer and Redox pseudocapacitance Charge Storage electric energy.
Described switch adopts transistor and field effect transistor, and wherein the first switch 12 and the 3rd switch 13 select triode transistor, lower level conducting; 2nd switch 14 and the 4th switch 15 select MOS field effect transistor, high level conducting.
The voltage monitoring value of described power supply monitoring module 5 is set as 1.8V ~ 5V, when the input voltage of power supply monitoring module 5 is greater than this set(ting)value, exports high level.
The efficiency of described buck DC-DC6 is more than 80%, and output voltage is 1.8V ~ 5V.
Band low-power consumption AD in described low-power consumption microprocessor 7, or can external low-power consumption AD.
Described low-power consumption microprocessor 7 comprises low-power scm, low-power consumption DSP(digital signal processor) and FPGA(field-programmable gate array) etc.
When being applicable to the intelligent electric power management circuit use of optical fiber energy supplying system, irradiate photovoltaic cell 2 with stable laser beam 1, limited luminous energy is converted to electric energy; Preceding stage DC-DC module 3 carries MPPT(peak power point and follows the tracks of), thus make photovoltaic cell be operated near peak power point; First switch 12 is in conducting state (lower level) at the beginning, 3rd switch 13 is in disconnection state (high level), 2nd switch 14 is in disconnection state (lower level), and the 4th switch 15 is in disconnection state (lower level), and now the super capacitor of energy-storage module 4 is in charging state; When super capacitor both end voltage is charged to the threshold voltage that power supply monitoring module 5 is arranged, the 2nd switch 14 conducting (high level), the 3rd switch 13 conducting (lower level), buck DC-DC6 exports suitable Voltage rails allows low-power consumption microprocessor 7 work; Low-power consumption microprocessor 7 is at moment conducting the 4th switch 15, disconnect the first switch 12, simultaneously, the inside A/D module 8 of low-power consumption microprocessor 7 surveys super capacitor both end voltage, when its magnitude of voltage is lower than 2.2V, and conducting first switch 12, disconnect the 4th switch 15, the 2nd switch 14 and the 3rd switch 13, at this moment, super capacitor is in again charging state, ceaselessly circulates like this.
It is relatively big that above-mentioned working process is applicable to system power dissipation, when the electric energy that photovoltaic cell 2 provides is insufficient. when the electric energy that photovoltaic cell 2 provides is sufficient, said process can be reduced to: the first switch 12 is in conducting state (lower level) at the beginning, 3rd switch 13 is in disconnection state (high level), 2nd switch 14 is in disconnection state (lower level), 4th switch 15 is in disconnection state (lower level), now super capacitor is in charging state, when super capacitor both end voltage is charged to the threshold voltage that power supply monitoring module 5 is arranged, 2nd switch 14 conducting (high level), 3rd switch 13 conducting (lower level), buck DC-DC6 exports suitable Voltage rails allows low-power consumption microprocessor 7 work, low-power consumption microprocessor 7 is at moment conducting the 4th switch 15, disconnect the first switch 12.
Below in conjunction with the accompanying drawing in present example, the technical scheme in present example is carried out the description of complete display. Obviously, described embodiment is only a part of example of the present invention, instead of whole example. Based on the embodiment in the present invention, other all embodiment that those of ordinary skill in the art are not making any creative work and obtain, all belongs to the scope of protection of the invention.
Fig. 5 is the optical fiber energy supplying system structure iron utilizing the present invention to form, as shown in Figure 5, this system comprises laser apparatus 20, optical fiber 17, intelligent electric power management circuit 21, low-power consumption microprocessor 7, first low-power consumption sensor module 22 and the 2nd low-power consumption sensor module 23.
Described laser apparatus 20 exports the light stable power of several watts to tens watts, after optical fiber 17 transmits, decays to hundreds of milliwatt; Hundreds of milliwatt luminous energies after Optical Fiber Transmission are converted into electric energy by photovoltaic cell 2, for late-class circuit is powered.
Described optical fiber adopts long-distance optical fiber, and described long-distance optical fiber 17 is multimode silica fibre, and multimode optical fibers is strong relative to the biography energy ability of single-mode fiber, is the good selection of optical fiber energy supplying system.
The working process of described intelligent electric power management circuit 21 is exactly the working process described in summary of the invention.
Described low-power consumption microprocessor 7 comprises low-power scm, low-power consumption DSP, FPGA etc.
Described first low-power consumption sensor module 22 and the 2nd low-power consumption sensor module 23 can adopt the temperature sensor of low-power consumption, pressure sensing, acceleration transducer, CO sensor or H2The gas sensors such as sensor.
Laser apparatus 20 is arranged on base station portion, and staff can control its working condition, such as, open or close, and adjusts laser output power etc., and this laser apparatus is moderate, working stability, it is possible to meet the occasion that major part optical fiber passes energy. The light beam that laser apparatus 20 exports is coupled to the multimode optical fibers 17 of long distance through coupling mechanism, and this fiber arrangement is at some such as high frequency noise, and electromagnetic interference, in the environment of the impact such as magnetic field or high-voltage. After light beam arrives photovoltaic cell 2 and intelligent electric power management circuit 21 of the present invention, power supply is to rear class sensor-based system.
Rear class sensor-based system comprises the first low-power consumption sensor module 22 and the 2nd low-power consumption sensor module 23 and low-power consumption microprocessor 7. The analog information collected is converted to data information and is sent to low-power consumption microprocessor 7 by the first low-power consumption sensor module 22 and the 2nd low-power consumption sensor module 23, then low-power consumption microprocessor 7 carry out corresponding data mart modeling, process and show.
Claims (9)
1. the intelligent electric power management circuit being applicable to optical fiber energy supplying system, its feature is: comprise photovoltaic cell, preceding stage DC-DC module, energy-storage module, switch, power supply monitoring module, buck DC-DC module and low-power consumption microprocessor; Described switch comprises the first switch, the 2nd switch, the 3rd switch and the 4th switch; Described low-power consumption microprocessor has inner A/D module, the first inner I/O port, the 2nd inner I/O port and power supply port; The output terminal of photovoltaic cell is connected with the inside A/D module of low-power consumption microprocessor, energy-storage module, the first switch and the 3rd switch respectively by preceding stage DC-DC module; The output terminal of the first switch is connected with power supply monitoring module one end, and the other end of power supply monitoring module is connected to the voltage controling end of the 2nd switch; The output terminal of the 3rd switch is connected with one end of buck DC-DC module, and the other end of buck DC-DC module is connected with the power supply port of low-power consumption microprocessor; 2nd I/O port of low-power consumption microprocessor is connected to the voltage controling end of the 4th switch; The input terminus of the 4th switch is connected with the voltage controling end of the 3rd switch and the input terminus of the 2nd switch.
2. the intelligent electric power management circuit being applicable to optical fiber energy supplying system according to claim 1, its feature is: described photovoltaic cell adopts photoelectric transformation efficiency to be greater than 30%, and operating voltage scope is 200mV ~ 5.5V high efficiency photovoltaic cell.
3. the intelligent electric power management circuit being applicable to optical fiber energy supplying system according to claim 2, its feature is: described high efficiency photovoltaic cell is GaAs photovoltaic cell or condensation photovoltaic battery.
4. the intelligent electric power management circuit being applicable to optical fiber energy supplying system according to claim 1, its feature is: described preceding stage DC-DC module carries MPPT peak power point and follows the tracks of, and makes photovoltaic cell always work near peak power point; Described preceding stage DC-DC module input voltage scope is 200mV ~ 5.5V, and output voltage is 3.3V ~ 5V.
5. the intelligent electric power management circuit being applicable to optical fiber energy supplying system according to claim 1, its feature is: described energy-storage module uses the series-parallel connection of super capacitor to realize.
6. the intelligent electric power management circuit being applicable to optical fiber energy supplying system according to claim 1, its feature is: described switch adopts transistor and field effect transistor, and wherein the first switch and the 3rd switch select triode transistor, lower level conducting; 2nd switch and the 4th switch select MOS field effect transistor, high level conducting.
7. the intelligent electric power management circuit being applicable to optical fiber energy supplying system according to claim 1, its feature is: the voltage monitoring value of described power supply monitoring module is set as 1.8V ~ 5V, when the input voltage of power supply monitoring module is greater than this set(ting)value, export high level.
8. the intelligent electric power management circuit being applicable to optical fiber energy supplying system according to claim 1, its feature is: the efficiency of described buck DC-DC is more than 80%, and output voltage is 1.8V ~ 5V.
9. the intelligent electric power management circuit being applicable to optical fiber energy supplying system according to claim 1, its feature is: the external low-power consumption AD of described low-power consumption microprocessor.
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| CN105897338A (en) * | 2016-05-18 | 2016-08-24 | 中天科技光纤有限公司 | Outdoor detection device based on energy supply of optical fibre |
| CN106451825A (en) * | 2016-09-28 | 2017-02-22 | 南京奥依菲光电科技有限公司 | Optical fiber remote end power supply system with safety protection device and implementation method of optical fiber remote end power supply system |
| CN107453685A (en) * | 2017-09-25 | 2017-12-08 | 山东鲁能智能技术有限公司 | A kind of energy supplying system of power circuit temperature measuring equipment |
| CN113783318B (en) * | 2021-11-11 | 2022-02-15 | 北京邮电大学 | Energy management and storage system suitable for optical fiber energy transmission |
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