CN114413961B - Test evaluation device for dynamic laser wireless energy transmission system - Google Patents
Test evaluation device for dynamic laser wireless energy transmission system Download PDFInfo
- Publication number
- CN114413961B CN114413961B CN202111664295.9A CN202111664295A CN114413961B CN 114413961 B CN114413961 B CN 114413961B CN 202111664295 A CN202111664295 A CN 202111664295A CN 114413961 B CN114413961 B CN 114413961B
- Authority
- CN
- China
- Prior art keywords
- laser
- power
- light
- receiving
- power meter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 129
- 238000011156 evaluation Methods 0.000 title claims abstract description 85
- 230000005540 biological transmission Effects 0.000 title claims abstract description 62
- 238000010586 diagram Methods 0.000 claims description 44
- 230000003287 optical effect Effects 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000000087 stabilizing effect Effects 0.000 claims description 20
- 230000017525 heat dissipation Effects 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000005338 frosted glass Substances 0.000 claims description 7
- 230000006641 stabilisation Effects 0.000 claims description 6
- 238000011105 stabilization Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000005337 ground glass Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 6
- 239000000523 sample Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/30—Circuit arrangements or systems for wireless supply or distribution of electric power using light, e.g. lasers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The embodiment of the invention discloses a test evaluation device for a dynamic laser wireless energy transmission system, which can be used for respectively testing and evaluating a laser system, a collimation system and a receiving end system in the dynamic laser wireless energy transmission system based on a constructed laser system test unit, a collimation system test unit and a receiving end system test unit, namely, each part of the dynamic laser wireless energy transmission system can be tested and evaluated, so that the integrity and the accuracy of evaluation can be improved. In addition, the system evaluation accuracy can be improved by evaluating the parts of the dynamic laser wireless energy transmission system through different evaluation parameters.
Description
Technical Field
The invention relates to the technical field of wireless energy transmission, in particular to a test evaluation device for a dynamic laser wireless energy transmission system.
Background
The laser wireless energy transmission technology has the advantages of high energy density, good energy convergence, good directivity, long transmission distance, small transmitting and receiving aperture and the like, can still keep the light beam concentrated after long-distance transmission, is easy to focus, has better directivity, is suitable for supplying power to long-distance mobile equipment, and has good development prospect in long-distance energy transmission.
Aiming at a movable energy transmission system in the energy transmission process, namely a dynamic laser wireless energy transmission system, such as an unmanned plane, an unmanned vehicle, a robot and the like, in the long-distance wireless energy transmission process, the transmission efficiency index of the system is extremely important, laser can be interfered by atmosphere and cloud layers, the transmission efficiency is reduced due to the existence of space light path attenuation, light beams, angles and other factors, so that the construction of a test evaluation device for the dynamic laser wireless energy transmission system is particularly important, and the design and screening of system components are guided to be suitable for the laser wireless energy transmission system in a battlefield.
Disclosure of Invention
The invention provides a test evaluation device for a dynamic laser wireless energy transmission system, which is used for effectively evaluating the dynamic laser wireless energy transmission system. The specific technical scheme is as follows.
The embodiment of the invention provides a test evaluation device for a dynamic laser wireless energy transmission system, which comprises: the system comprises a laser system, a laser system testing unit, a collimation system testing unit, a receiving end system and a receiving end system testing unit; the receiving end system is a dynamic system; the receiving end system moves according to a specified speed and a specified path;
the laser system includes: the laser comprises a laser power supply, a laser and a water cooler; the laser is connected with the laser power supply and the water cooling machine;
the laser system test unit includes: a first ac power meter, a first dc power meter, a second ac power meter, and a first laser power meter;
The first alternating current power meter is connected with the laser power supply and is used for testing the input alternating current power of the system; the first direct current power meter is connected with the laser and used for testing direct current power supply power of the laser; the second alternating current power meter is connected with the water cooling machine and is used for testing alternating current power passing through the water cooling machine; the first laser power meter is used for receiving laser emitted by the laser and testing the light power of an emitting end of the laser;
The collimation system comprises: a collimating antenna, a first attenuator, a near field test device, and a far field test device; the near field test device comprises a first lens group and a second attenuator; the far field test device includes: a diaphragm, a first shutter, ground glass, a lens, and a third attenuator; the far field testing device is arranged on the X-Y axis displacement table;
The collimating antenna is used for receiving the laser emitted by the laser, and the first attenuator is used for receiving the laser emitted by the laser; the first lens group is used for receiving the laser after passing through the collimating antenna, and the second attenuator is used for receiving the laser after passing through the first lens group; the diaphragm and the frosted glass are used for receiving the laser after passing through the second attenuator, the first optical gate is used for receiving the laser after passing through the diaphragm, the lens is used for receiving the laser after passing through the frosted glass, and the third attenuator is used for receiving the laser after passing through the lens;
the collimation system test unit comprises: a first spot analyzer, a second laser power meter, a second spot analyzer, a third laser power meter, and a third spot analyzer;
the first light spot analyzer is used for receiving the laser passing through the first attenuator to obtain a beam divergence angle and a first light energy distribution diagram; the second laser power meter is used for receiving the laser passing through the first lens group and testing the near-field light power after collimation; the second light spot analyzer is used for receiving the laser passing through the second attenuator to obtain a light spot diameter and a second light energy distribution diagram; the third laser power meter is used for receiving the laser passing through the first optical gate and testing the far-field optical power after collimation; the third light spot analyzer is used for receiving the laser passing through the third attenuator to obtain a third light energy distribution diagram;
The receiving end system comprises: the system comprises a laser battery, a maximum power tracking module, a voltage stabilizing module and a load; the maximum power tracking module is connected with the laser battery and the voltage stabilizing module, and the voltage stabilizing module is also connected with the load;
the receiving end system test unit comprises: a first wind speed tester, a volt-ampere characteristic tester, a second direct current power meter, and a third direct current power meter;
The first wind speed tester is used for testing the wind speed flowing through the laser battery; the volt-ampere characteristic tester is connected with the laser battery and is used for testing the maximum output power of the laser battery; the second direct current power meter is connected with the input end of the voltage stabilizing module and is used for testing the actual output direct current power; the third direct current power meter is connected with the output end of the voltage stabilizing module and used for outputting direct current power after testing voltage stabilization.
Optionally, the laser system further comprises: a second lens group and a second shutter;
The second lens group is used for focusing laser emitted by the laser; the second optical gate is used for filtering the laser focused by the second lens group;
the first laser power meter is used for receiving the laser after passing through the second lens group and the second optical shutter and testing the light power of the emitting end of the laser.
Optionally, the apparatus further includes: an evaluation unit;
The evaluation unit is used for calculating the evaluation parameters of the laser system according to the input alternating current power, the alternating current power passing through the water cooling machine, the direct current power supply and the light power of the transmitting end;
The evaluation unit is further used for calculating an evaluation parameter of the collimation system according to the beam divergence angle, the first light energy distribution diagram, the collimated near-field light power, the light spot diameter, the second light energy distribution diagram, the collimated far-field light power and the third light energy distribution diagram;
The evaluation unit is further used for calculating the evaluation parameters of the receiving end system according to the maximum output power, the actual output direct current power and the stabilized output direct current power.
Optionally, the evaluation unit is configured to calculate the laser system evaluation parameter according to the input ac power, the ac power passing through the water cooling machine, the dc power supply, and the transmitting end optical power, where the evaluation unit is specifically configured to:
Acquiring readings P ai, P Fi, P di and P i of the first alternating current power meter, the second alternating current power meter and the first direct current power meter, which are read at set time intervals;
The input ac power P a1, the ac power P a2 passing through the water cooling machine, the dc power P d, and the transmitting-end optical power P in are calculated according to the following formulas:
Wherein n is the number of tests;
The direct current-to-optical power conversion efficiency η 1, the alternating current-to-optical power conversion efficiency η 2, and the laser system efficiency η 3 of the laser system are calculated according to the following formulas, respectively:
Optionally, the collimation system evaluation parameters include: near field power transmission efficiency, far field space transmission efficiency, collimation antenna beam shrinkage ratio, emission end optical power density, space light spot distortion condition and beam uniformity; the evaluation unit is configured to calculate an evaluation parameter of the collimation system according to the beam divergence angle, the first light energy distribution diagram, the collimated near-field light power, the spot diameter, the second light energy distribution diagram, the collimated far-field light power, and the third light energy distribution diagram, where the evaluation parameter is specifically configured to:
Acquiring readings P zi of the second alternating current power meter, and readings P xiyj of the third laser power meter recorded on the ith time in the X-axis direction and the jth time in the Y-axis direction, wherein the readings P zi are read according to a set time interval;
Acquiring a diaphragm area S 0 of the diaphragm and a battery area S of the laser battery;
the near-field light power P z after collimation and the light power P o received by the far-field laser cell after collimation are respectively calculated according to the following formulas:
The near-field power transmission efficiency η 4 and the far-field space transmission efficiency η 5 are calculated according to the following formulas, respectively:
Acquiring the beam divergence angle phi, the spot diameter D 1 and the distance D between the first spot analyzer and the second spot analyzer;
Calculating a beam shrinkage ratio of the collimating antenna according to the beam divergence angle phi, the light spot diameter D 1 and the distance D between the first light spot analyzer and the second light spot analyzer;
Acquiring the caliber R of the collimating antenna and the mass M 1 of the collimating antenna;
The area optical power density ρ 1 and the mass optical power density ρ 2 are calculated according to the following formulas, respectively:
And comparing the first light energy distribution diagram, the second light energy distribution diagram and the third light energy distribution diagram to determine the space facula distortion condition and the light beam uniformity.
Optionally, the evaluation unit is specifically configured to, when calculating the beam shrinkage ratio of the collimating antenna according to the beam divergence angle Φ, the spot diameter D 1, and the distance D between the first spot analyzer and the second spot analyzer:
The collimated antenna beam reduction ratio β is calculated according to the following formula:
Wherein D 2 is the spot diameter at the second spot analyzer when not collimated.
Optionally, the evaluation unit is specifically configured to, when calculating the evaluation parameter of the receiving end system according to the maximum output power, the actual output dc power, and the stabilized output dc power:
Obtaining readings P mi of the volt-ampere characteristic tester, readings P do1i of the second direct current power meter and readings P do2i of the third direct current power meter under different laser emission powers and different wind speeds which are read according to set time intervals;
The maximum power P m output by the laser battery, the actual output direct current power P do1 of the maximum power tracking module and the output direct current power P do2 after voltage stabilization are calculated according to the following formulas:
the efficiency eta M of the maximum power tracking module and the efficiency eta d of the receiving end voltage stabilizing module are calculated according to the following formulas respectively:
Optionally, the apparatus further includes: a heat sink and a heat sink testing unit; the heat dissipation device is connected with the laser battery;
the heat dissipation device test unit includes: a second wind speed tester, a first temperature sensor, a second temperature sensor, and a third temperature sensor;
the second wind speed tester is used for monitoring the wind speed flowing through the heat dissipation device; the first temperature sensor is located on the photosensitive surface of the laser battery plate, the second temperature sensor is located on the back surface of the laser battery plate, and the third temperature sensor is located on the heat dissipation device.
Optionally, the evaluation unit is further configured to calculate the heat dissipation device evaluation parameter, specifically configured to:
For each wind speed measured by the wind speed tester, acquiring a steady-state temperature T s1 of the first temperature sensor, a steady-state temperature T s2 of the second temperature sensor and a steady-state temperature T s3 of the third temperature sensor corresponding to the wind speed;
acquiring the mass M 3 of the heat dissipation device;
the temperature density ρ 5 of the heat sink and the temperature density ρ 6 of the laser battery at this wind speed were calculated according to the following formulas, respectively:
Optionally, the evaluation unit is further configured to calculate the overall conversion efficiency η of the system according to the following formula:
As can be seen from the foregoing, the test evaluation device for a dynamic laser wireless energy transmission system according to the embodiment of the present invention may be based on the constructed laser system test unit, collimation system test unit, and receiving end system test unit, to perform test evaluation on the laser system, collimation system, and receiving end system in the dynamic laser wireless energy transmission system, that is, may perform test evaluation on each portion of the dynamic laser wireless energy transmission system, so as to improve the integrity and accuracy of the evaluation. In addition, the system evaluation accuracy can be improved by evaluating the parts of the dynamic laser wireless energy transmission system through different evaluation parameters. Of course, it is not necessary for any one product or method of practicing the invention to achieve all of the advantages set forth above at the same time.
The innovation points of the embodiment of the invention include:
1. Based on the constructed laser system test unit, collimation system test unit and receiving end system test unit, the laser system, collimation system and receiving end system in the dynamic laser wireless energy transmission system are respectively tested and evaluated, that is, all parts of the dynamic laser wireless energy transmission system can be tested and evaluated, so that the integrity and accuracy of evaluation can be improved.
2. The system evaluation accuracy can be improved by evaluating the parts of the dynamic laser wireless energy transmission system through different evaluation parameters.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is apparent that the drawings in the following description are only some embodiments of the invention. Other figures may be derived from these figures without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of a layout of a test site according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a laser system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a collimating system according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a system structure of a receiving end according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a heat dissipating device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram showing a temperature variation curve according to an embodiment of the present invention;
Fig. 7 is a schematic diagram of a total test point according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
It should be noted that the terms "comprising" and "having" and any variations thereof in the embodiments of the present invention and the accompanying drawings are intended to cover non-exclusive inclusions. A process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may alternatively include other steps or elements not listed or inherent to such process, method, article, or apparatus.
The embodiment of the invention discloses a test evaluation device for a dynamic laser wireless energy transmission system, which can effectively evaluate the dynamic laser wireless energy transmission system. The following describes embodiments of the present invention in detail.
The invention aims to establish a complete testing and evaluating method for the laser wireless energy transmission system, which comprises a testing device, testing conditions, a test object, an evaluation index, a testing method, an analysis means and the like, so that different laser wireless energy transmission systems can measure objective and fair testing results under different experimental condition requirements.
FIG. 1 shows a schematic diagram of a test floor layout according to an embodiment of the present invention. The whole layout of the field is to divide the area of the test field to ensure the safety of test personnel and test instruments and divide a safe area, an unsafe area, a dangerous area and a laser energy transmission test area. Personnel in a safety area can observe, shoot and record, can also operate a trigger switch of a monitoring instrument and the like, and fire extinguishing equipment is arranged in the safety area, so that fire extinguishing is mainly performed aiming at possible fire accidents in experiments. The unsafe zone is the place where the laser may be irradiated, and no personnel can walk in the zone. The dangerous area refers to the periphery of the area where the receiving end laser battery and the load are located, the laser has directional instability, the light path can have tiny deviation, and personnel cannot be detained at the dangerous area. The test area is an area where the laser wireless energy transmission system works, and is mainly used for placing a laser emission system (a laser power supply, a laser and a cold water machine), a collimation system (an emission antenna, a lens group and a rotary table), a receiving system (a laser battery, a voltage stabilizing module and a load), a testing instrument (an alternating current power meter, a direct current power meter, a digital source meter, a laser power meter, a volt-ampere characteristic tester, a spectrum analyzer, a light spot analyzer, a laser range finder, a temperature sensor and a digital video camera) and the like.
In the embodiment of the invention, the dynamic laser wireless transmission system particularly refers to an energy transmission system with a movable receiving end in the energy transmission process, and the energy transmission system comprises, but is not limited to, unmanned aerial vehicles, robot laser wireless energy transmission systems and the like. The dynamic system needs the receiving end to spiral according to the appointed speed and the appointed path.
For the laser, the wavelength ranges of the laser can be selected from the wavelength ranges of 850nm, 808nm, 980nm and the like, and the power ranges of 0-500W, 500-1000W and more than 1000W are divided, so that the transverse evaluation of the system performance is facilitated; for the energy transmission distance, the distance ranges of 0-200m, 200-1000m and above are divided, so that the longitudinal evaluation of the near field and far field system performance is facilitated.
The embodiment of the invention provides a test evaluation device for a dynamic laser wireless energy transmission system, which comprises: the system comprises a laser system, a laser system testing unit, a collimation system testing unit, a receiving end system and a receiving end system testing unit; the receiving end system is a dynamic system; the receiving end system moves according to the appointed speed and the appointed path.
Specifically, as shown in fig. 2, the laser system includes: the laser comprises a laser power supply, a laser and a water cooler; the laser is connected with a laser power supply and a water cooling machine. The laser system test unit includes: a first ac power meter (i.e., ac power meter 1), a first dc power meter (i.e., dc power meter 1), a second ac power meter (i.e., ac power meter 2), and a first laser power meter (i.e., laser power meter 1); the first alternating current power meter is connected with the laser power supply and is used for testing the input alternating current power of the system; the first direct current power meter is connected with the laser and used for testing the direct current power supply of the laser; the second alternating current power meter is connected with the water cooling machine and is used for testing alternating current power passing through the water cooling machine; the first laser power meter is used for receiving laser emitted by the laser and testing the light power of the emitting end of the laser.
In one implementation, as shown in fig. 2, the laser system further includes: a second lens group (i.e., lens group 2) and a second shutter (i.e., shutter 2); the second lens group is used for focusing laser emitted by the laser; the second optical gate is used for filtering the laser focused by the second lens group; and the first laser power meter is used for receiving the laser after passing through the second lens group and the second optical shutter and testing the light power of the emitting end of the laser.
The specific test steps are as follows:
1. Firstly, arranging and connecting a testing instrument according to the sequence shown in fig. 2, selecting a focusing lens group (when the diameter of a laser beam is overlarge and exceeds the size of a probe of a laser power meter, focusing the beam by using a lens, ensuring that a measured light spot is projected into a 2/3 area of the diameter of a light receiving surface of the laser power meter 1, ensuring that the beam is incident from the center of the light receiving surface of the laser power meter 1, selecting a proper measuring range of the light power meter, blocking the light entering the laser power meter 1 by using a light gate, avoiding unstable beam just after the laser is started and avoiding damaging the instrument by long-time laser irradiation;
2. adjusting a laser power supply to enable a laser to emit specified power;
3. Selecting two AC power meters and a proper measuring range of a DC power meter; the readings P ai, P Fi, P di and P i of the AC power meter 1, the DC power meter 2, and the laser power meter 1 are recorded at predetermined time intervals, and the units are W.
After the data recording is completed, the laser system can also be evaluated from the recorded data. Specifically, the device further comprises: and the evaluation unit is used for calculating the evaluation parameters of the laser system according to the input alternating current power, the alternating current power passing through the water cooling machine, the direct current power supply and the light power of the transmitting end.
Specifically, the readings P ai, P Fi, P di and P i of the first AC power meter, the second AC power meter, the first DC power meter and the first laser power meter may be obtained at first; then, the input ac power P a1, the ac power P a2 passing through the water cooling machine, the dc power P d, and the transmitting end optical power P in are calculated according to the following formulas:
Wherein n is the number of tests;
finally, the direct current-optical power conversion efficiency η 1, the alternating current-optical power conversion efficiency η 2, and the laser system efficiency η 3 of the laser system are calculated according to the following formulas, respectively:
As shown in fig. 3, the collimation system may include: a collimating antenna, a first attenuator (i.e., attenuator 1), a near field test device, and a far field test device; the near field test device comprises a first lens group (i.e. lens group 1) and a second attenuator (i.e. attenuator 2); the far field test device includes: a diaphragm, a first shutter (i.e., shutter 1), frosted glass, a lens, and a third attenuator (i.e., attenuator 3); the far field testing device is arranged on the X-Y axis displacement table.
The collimating antenna is used for receiving the laser emitted by the laser, and the first attenuator is used for receiving the laser emitted by the laser; the first lens group is used for receiving the laser after passing through the collimating antenna, and the second attenuator is used for receiving the laser after passing through the first lens group; the diaphragm and the frosted glass are used for receiving the laser after passing through the second attenuator, the first optical shutter is used for receiving the laser after passing through the diaphragm, the lens is used for receiving the laser after passing through the frosted glass, and the third attenuator is used for receiving the laser after passing through the lens.
The collimation system test unit includes: a first spot analyzer (i.e., spot analyzer 1), a second laser power meter (i.e., laser power meter 2), a second spot analyzer (i.e., spot analyzer 2), a third laser power meter (i.e., laser power meter 3), and a third spot analyzer (i.e., spot analyzer 3).
The first light spot analyzer is used for receiving the laser after passing through the first attenuator to obtain a beam divergence angle and a first light energy distribution diagram; the second laser power meter is used for receiving the laser passing through the first lens group and testing the near-field light power after collimation; the second light spot analyzer is used for receiving the laser passing through the second attenuator to obtain a light spot diameter and a second light energy distribution diagram; the third laser power meter is used for receiving the laser passing through the first optical gate and testing the far-field optical power after collimation; the third light spot analyzer is used for receiving the laser light passing through the third attenuator to obtain a third light energy distribution diagram.
The specific test steps are as follows:
1. Measuring the caliber R of the collimating antenna, the distance D between the light spot analyzers 1 and 2 and the area S of the laser battery by using a ruler; measuring the mass M 1 of the collimating antenna by using a balance;
2. The test instruments are placed and connected in the sequence shown in fig. 3, and the light power P in of the transmitting end measured by the laser power meter 1;
3. Selecting proper measuring ranges of three laser power meters, wherein the measurement of the optical power of the near field after collimation is consistent with that of a test method before collimation, selecting a focusing lens group (when the diameter of a laser beam is overlarge and exceeds the size of a laser power meter probe, a lens is required to focus the beam, a measured light spot is ensured to be projected into a 2/3 area of the diameter of a light receiving surface of the laser power meter, the incidence of the beam from the center of the light receiving surface of the laser power meter 2 is ensured, and the light spot area of the collimated beam after far field transmission just completely covers a laser battery, which is one of the invention points of the invention;
4. setting the scanning range, scanning resolution and scanning sensitivity of the spot analyzer according to the light output spectrum range of the laser, and attenuating light into the normal working range of the spot analyzer by using attenuators for the light beams before and after collimation so as to ensure the accuracy of experimental result recording, which is one of the invention points;
5. The aperture is circular, the area is S o (the diameter is matched with the size of the probe of the optical power meter), the diaphragm and the far-field testing instrument are arranged on an X-Y axis displacement table, the diaphragm outlet is connected with the optical power meter, a whole piece of ground glass is arranged at the far field to receive far-field large light spots, and the light is collected into the light spot analyzer by a lens;
6. Adjusting a power supply to enable a laser to emit specified power, scanning the laser in a set wave band by a light spot analyzer, measuring a beam divergence angle phi by the light spot analyzer 1, and measuring a light spot diameter D 1 by the light spot analyzer 2;
7. Operating the X-Y axis displacement table to move the light barrier in the X axis and Y axis directions, wherein the moving range is consistent with the size of the laser battery at the receiving end, so as to obtain different light power and light energy distribution at the corresponding position of X iyj;
8. The readings P i of the laser power meter 1, the reading P zi of the laser power meter 2, the reading P xiji of the laser power meter 3, the beam divergence angle phi measured by the spot analyzer 1, the spot diameter D 1 measured by the spot analyzer 2 and the light energy distribution diagrams measured by the spot analyzers 1,2 and 3 are recorded at regular time intervals.
After the test is finished, the evaluation unit can calculate the evaluation parameters of the collimation system according to the divergence angle of the light beam, the first light energy distribution diagram, the near-field light power after collimation, the spot diameter, the second light energy distribution diagram, the far-field light power after collimation and the third light energy distribution diagram.
The collimation system evaluation parameters may include: near field power transmission efficiency, far field space transmission efficiency, collimation antenna beam shrinkage ratio, emission end optical power density, space light spot distortion condition and beam uniformity; an evaluation unit, specifically for:
Acquiring readings P zi of a second alternating current power meter read at set time intervals and readings P xiyj of a third laser power meter recorded on the ith time in the X-axis direction and the jth time in the Y-axis direction;
acquiring a diaphragm area S 0 of a diaphragm and a battery area S of a laser battery;
the near-field light power P z after collimation and the light power P o received by the far-field laser cell after collimation are respectively calculated according to the following formulas:
The near-field power transmission efficiency η 4 and the far-field space transmission efficiency η 5 are calculated according to the following formulas, respectively:
Acquiring a beam divergence angle phi, a light spot diameter D 1 and a distance D between a first light spot analyzer and a second light spot analyzer;
Calculating the beam shrinkage ratio of the collimating antenna according to the beam divergence angle phi, the light spot diameter D 1 and the distance D between the first light spot analyzer and the second light spot analyzer;
acquiring the caliber R of the collimating antenna and the mass M 1 of the collimating antenna;
The area optical power density ρ 1 and the mass optical power density ρ 2 are calculated according to the following formulas, respectively:
and comparing the first light energy distribution diagram, the second light energy distribution diagram and the third light energy distribution diagram to determine the space facula distortion condition and the light beam uniformity.
In one implementation, when the evaluation unit calculates the beam shrinkage ratio of the collimating antenna, the beam shrinkage ratio β of the collimating antenna may be specifically calculated according to the following formula:
Wherein D 2 is the spot diameter at the second spot analyzer when not collimated.
As shown in fig. 4, the receiving-end system includes: the system comprises a laser battery, a maximum power tracking module, a voltage stabilizing module and a load; the maximum power tracking module is connected with the laser battery and the voltage stabilizing module, and the voltage stabilizing module is also connected with a load.
The receiving end system test unit comprises: a first anemometer (i.e., anemometer 1), a volt-ampere characteristic tester, a second DC power meter (i.e., DC power meter 2), and a third DC power meter (i.e., DC power meter 3); the first wind speed tester is used for testing the wind speed flowing through the laser battery, and the volt-ampere characteristic tester is connected with the laser battery and used for testing the maximum output power of the laser battery; the second direct current power meter is connected with the input end of the voltage stabilizing module and is used for testing the actual output direct current power; the third direct current power meter is connected with the output end of the voltage stabilizing module and is used for testing the output direct current power after voltage stabilization.
For the dynamic system which cannot measure the optical power of the receiving end, the circuit parameters of the receiving end can only be measured under the condition of ensuring the wind speed, specifically, the wind speed tester 1 monitors the wind speed flowing through the laser battery, adjusts the optical power of the transmitting end, records the readings P mi and other parameters of the volt-ampere characteristic tester, and records the readings P do1i and P do2i of the direct current power meter 2 and 3.
And the evaluation unit can calculate the evaluation parameters of the receiving end system according to the maximum output power, the actual output direct current power and the stabilized output direct current power.
Specifically, the readings P mi of the volt-ampere characteristic tester, the readings P do1i of the second direct current power meter and the readings P do2i of the third direct current power meter under different laser emission powers and different wind speeds which are read according to set time intervals can be obtained first; and then calculating the maximum power P m output by the laser battery, the actual output direct current power P do1 of the maximum power tracking module and the output direct current power P do2 after voltage stabilization according to the following formulas:
The efficiency eta M of the maximum power tracking module and the efficiency eta of the receiving end voltage stabilizing module are calculated according to the following formulas respectively d：
As shown in fig. 5, the apparatus further includes: a heat sink and a heat sink testing unit; the heat dissipation device is connected with the laser battery; the heat dissipation device test unit includes: a second anemometer (i.e., anemometer 2), a first temperature sensor (i.e., temperature sensor 1), a second temperature sensor (i.e., temperature sensor 2), and a third temperature sensor (i.e., temperature sensor 3).
The second wind speed tester is used for monitoring the wind speed flowing through the heat dissipation device so as to accurately calculate the relevant evaluation parameters corresponding to the current wind speed, which is one of the invention points; the first temperature sensor is located on the photosensitive surface of the laser battery plate, the second temperature sensor is located on the back surface of the laser battery plate, and the third temperature sensor is located on the heat dissipation device.
The specific test steps are as follows:
1. measuring the mass M 3 of the heat dissipation device by using a balance;
2. placing and connecting the test instruments in the sequence shown in fig. 5;
3. The temperature sensor 1 is arranged on the photosensitive surface of the battery plate, the temperature sensor 2 is arranged on the back surface of the battery plate, and the temperature sensor 3 is arranged on the heat dissipation device of the battery plate;
4. adjusting a laser power supply to enable a laser to emit specified power, and automatically adjusting the position of emitted laser by a transmitting end rotary table to ensure that a light beam is incident from the center of a receiving surface of a laser battery;
5. Recording the current wind speed;
6. Recording laser power P z of a transmitting end and corresponding steady-state temperature readings T s1、Ts2、Ts3 in temperature curves obtained by three temperature sensors; the temperature change curves of the batteries measured by the temperature sensors are shown in fig. 6, wherein the abscissa represents time, and the ordinate represents the corresponding temperature at each moment;
7. Changing the output of the fan, recording the wind speed at the current moment again to calculate related evaluation parameters corresponding to different wind speeds, improving the accuracy of the calculated evaluation parameters, and recording the laser power P z of the transmitting end and the readings of each temperature sensor.
After the test is finished, the evaluation unit can calculate the evaluation parameters of the heat dissipation device, specifically:
For each wind speed measured by the wind speed tester, acquiring a steady-state temperature T s1 of a first temperature sensor, a steady-state temperature T s2 of a second temperature sensor and a steady-state temperature T s3 of a third temperature sensor corresponding to the wind speed;
acquiring the mass M 3 of the heat dissipation device;
The temperature density ρ 5 of the heat sink and the temperature density ρ 6 of the laser battery at this wind speed were calculated according to the following formulas, respectively:
/>
optionally, the evaluation unit may be further configured to calculate the overall conversion efficiency η of the system according to the following formula:
Fig. 7 is a schematic diagram of a total test point according to an embodiment of the invention. As shown in fig. 7, the following evaluation parameters of the dynamic laser wireless transmission system can be obtained by testing the device provided by the embodiment of the invention: the system comprises an input alternating current power P a1, an alternating current power P a2, a direct current power P d, an emitting end optical power P in, a near field optical power P z after collimation, an optical power P o received by a far field laser battery after collimation, a laser battery output maximum power P m, a maximum power tracking module, an actual output direct current power P do1, a stabilized output direct current power P do2, a direct current-optical power conversion efficiency eta 1, an alternating current-optical power conversion efficiency eta 2, a laser system efficiency eta 3, a near field power transmission efficiency eta 4, a far field space transmission efficiency eta 5, a system overall conversion efficiency eta, a maximum power tracking module efficiency eta M and a receiving end voltage stabilizing module efficiency eta d.
As can be seen from the foregoing, the present embodiment may perform test and evaluation on the laser system, the collimation system, and the receiving end system in the dynamic laser wireless energy transmission system, respectively, based on the constructed laser system test unit, collimation system test unit, and receiving end system test unit, that is, may perform test and evaluation on each portion of the dynamic laser wireless energy transmission system, thereby improving the integrity and accuracy of the evaluation. In addition, the system evaluation accuracy can be improved by evaluating the parts of the dynamic laser wireless energy transmission system through different evaluation parameters.
Those of ordinary skill in the art will appreciate that: the drawing is a schematic diagram of one embodiment and the modules or flows in the drawing are not necessarily required to practice the invention.
Those of ordinary skill in the art will appreciate that: the modules in the apparatus of the embodiments may be distributed in the apparatus of the embodiments according to the description of the embodiments, or may be located in one or more apparatuses different from the present embodiments with corresponding changes. The modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A test evaluation device for a dynamic laser wireless energy transfer system, the device comprising: the system comprises a laser system, a laser system testing unit, a collimation system testing unit, a receiving end system and a receiving end system testing unit; the receiving end system is a dynamic system; the receiving end system moves according to a specified speed and a specified path;
the laser system includes: the laser comprises a laser power supply, a laser and a water cooler; the laser is connected with the laser power supply and the water cooling machine;
the laser system test unit includes: a first ac power meter, a first dc power meter, a second ac power meter, and a first laser power meter;
The first alternating current power meter is connected with the laser power supply and is used for testing the input alternating current power of the system; the first direct current power meter is connected with the laser and used for testing direct current power supply power of the laser; the second alternating current power meter is connected with the water cooling machine and is used for testing alternating current power passing through the water cooling machine; the first laser power meter is used for receiving laser emitted by the laser and testing the light power of an emitting end of the laser;
The collimation system comprises: a collimating antenna, a first attenuator, a near field test device, and a far field test device; the near field test device comprises a first lens group and a second attenuator; the far field test device includes: a diaphragm, a first shutter, ground glass, a lens, and a third attenuator; the far field testing device is arranged on the X-Y axis displacement table;
The collimating antenna is used for receiving the laser emitted by the laser, and the first attenuator is used for receiving the laser emitted by the laser; the first lens group is used for receiving the laser after passing through the collimating antenna, and the second attenuator is used for receiving the laser after passing through the first lens group; the diaphragm and the frosted glass are used for receiving the laser after passing through the second attenuator, the first optical gate is used for receiving the laser after passing through the diaphragm, the lens is used for receiving the laser after passing through the frosted glass, and the third attenuator is used for receiving the laser after passing through the lens;
the collimation system test unit comprises: a first spot analyzer, a second laser power meter, a second spot analyzer, a third laser power meter, and a third spot analyzer;
the first light spot analyzer is used for receiving the laser passing through the first attenuator to obtain a beam divergence angle and a first light energy distribution diagram; the second laser power meter is used for receiving the laser passing through the first lens group and testing the near-field light power after collimation; the second light spot analyzer is used for receiving the laser passing through the second attenuator to obtain a light spot diameter and a second light energy distribution diagram; the third laser power meter is used for receiving the laser passing through the first optical gate and testing the far-field optical power after collimation; the third light spot analyzer is used for receiving the laser passing through the third attenuator to obtain a third light energy distribution diagram;
The receiving end system comprises: the system comprises a laser battery, a maximum power tracking module, a voltage stabilizing module and a load; the maximum power tracking module is connected with the laser battery and the voltage stabilizing module, and the voltage stabilizing module is also connected with the load;
the receiving end system test unit comprises: a first wind speed tester, a volt-ampere characteristic tester, a second direct current power meter, and a third direct current power meter;
The first wind speed tester is used for testing the wind speed flowing through the laser battery; the volt-ampere characteristic tester is connected with the laser battery and is used for testing the maximum output power of the laser battery; the second direct current power meter is connected with the input end of the voltage stabilizing module and is used for testing the actual output direct current power; the third direct current power meter is connected with the output end of the voltage stabilizing module and is used for testing the output direct current power after voltage stabilization;
The apparatus further comprises: an evaluation unit;
The evaluation unit is used for calculating the evaluation parameters of the laser system according to the input alternating current power, the alternating current power passing through the water cooling machine, the direct current power supply and the light power of the transmitting end;
The evaluation unit is further used for calculating an evaluation parameter of the collimation system according to the beam divergence angle, the first light energy distribution diagram, the collimated near-field light power, the light spot diameter, the second light energy distribution diagram, the collimated far-field light power and the third light energy distribution diagram;
The evaluation unit is further used for calculating the evaluation parameters of the receiving end system according to the maximum output power, the actual output direct current power and the stabilized output direct current power.
2. The apparatus of claim 1, wherein the laser system further comprises: a second lens group and a second shutter;
The second lens group is used for focusing laser emitted by the laser; the second optical gate is used for filtering the laser focused by the second lens group;
the first laser power meter is used for receiving the laser after passing through the second lens group and the second optical shutter and testing the light power of the emitting end of the laser.
3. The apparatus according to claim 2, wherein the evaluation unit is configured to calculate the laser system evaluation parameter based on the input ac power, the ac power passing through the water cooling machine, the dc power supply, and the transmitting-side optical power, when:
Acquiring readings P ai, P Fi, P di and P i of the first alternating current power meter, the second alternating current power meter and the first direct current power meter, which are read at set time intervals;
The input ac power P a1, the ac power P a2 passing through the water cooling machine, the dc power P d, and the transmitting-end optical power P in are calculated according to the following formulas:
Wherein n is the number of tests;
The direct current-to-optical power conversion efficiency η 1, the alternating current-to-optical power conversion efficiency η 2, and the laser system efficiency η 3 of the laser system are calculated according to the following formulas, respectively:
4. The apparatus of claim 3, wherein the collimation system evaluation parameters comprise: near field power transmission efficiency, far field space transmission efficiency, collimation antenna beam shrinkage ratio, emission end optical power density, space light spot distortion condition and beam uniformity; the evaluation unit is configured to calculate an evaluation parameter of the collimation system according to the beam divergence angle, the first light energy distribution diagram, the collimated near-field light power, the spot diameter, the second light energy distribution diagram, the collimated far-field light power, and the third light energy distribution diagram, where the evaluation parameter is specifically configured to:
Acquiring readings P zi of the second alternating current power meter, and readings P xiyj of the third laser power meter recorded on the ith time in the X-axis direction and the jth time in the Y-axis direction, wherein the readings P zi are read according to a set time interval;
Acquiring a diaphragm area S 0 of the diaphragm and a battery area S of the laser battery;
the near-field light power P z after collimation and the light power P o received by the far-field laser cell after collimation are respectively calculated according to the following formulas:
The near-field power transmission efficiency η 4 and the far-field space transmission efficiency η 5 are calculated according to the following formulas, respectively:
Acquiring the beam divergence angle phi, the spot diameter D 1 and the distance D between the first spot analyzer and the second spot analyzer;
Calculating a beam shrinkage ratio of the collimating antenna according to the beam divergence angle phi, the light spot diameter D 1 and the distance D between the first light spot analyzer and the second light spot analyzer;
Acquiring the caliber R of the collimating antenna and the mass M 1 of the collimating antenna;
The area optical power density ρ 1 and the mass optical power density ρ 2 are calculated according to the following formulas, respectively:
And comparing the first light energy distribution diagram, the second light energy distribution diagram and the third light energy distribution diagram to determine the space facula distortion condition and the light beam uniformity.
5. The apparatus according to claim 4, wherein the evaluation unit is configured to calculate a collimator antenna beam reduction ratio based on the beam divergence angle Φ, the spot diameter D 1, and a distance D between the first spot analyzer and the second spot analyzer, in particular:
The collimated antenna beam reduction ratio β is calculated according to the following formula:
Wherein D 2 is the spot diameter at the second spot analyzer when not collimated.
6. The apparatus according to claim 4, wherein the evaluation unit is configured to, when calculating the receiving-side system evaluation parameter according to the maximum output power, the actual output dc power, and the regulated output dc power:
Obtaining readings P mi of the volt-ampere characteristic tester, readings P do1i of the second direct current power meter and readings P do2i of the third direct current power meter under different laser emission powers and different wind speeds which are read according to set time intervals;
The maximum power P m output by the laser battery, the actual output direct current power P do1 of the maximum power tracking module and the output direct current power P do2 after voltage stabilization are calculated according to the following formulas:
The efficiency eta M of the maximum power tracking module and the efficiency eta of the receiving end voltage stabilizing module are calculated according to the following formulas respectively d：
7. The apparatus of claim 2, wherein the apparatus further comprises: a heat sink and a heat sink testing unit; the heat dissipation device is connected with the laser battery;
the heat dissipation device test unit includes: a second wind speed tester, a first temperature sensor, a second temperature sensor, and a third temperature sensor;
the second wind speed tester is used for monitoring the wind speed flowing through the heat dissipation device; the first temperature sensor is located on the photosensitive surface of the laser battery plate, the second temperature sensor is located on the back surface of the laser battery plate, and the third temperature sensor is located on the heat dissipation device.
8. The device according to claim 7, wherein the evaluation unit is further configured to calculate the heat sink evaluation parameter, in particular for:
For each wind speed measured by the wind speed tester, acquiring a steady-state temperature T s1 of the first temperature sensor, a steady-state temperature T s2 of the second temperature sensor and a steady-state temperature T s3 of the third temperature sensor corresponding to the wind speed;
acquiring the mass M 3 of the heat dissipation device;
the temperature density ρ 5 of the heat sink and the temperature density ρ 6 of the laser battery at this wind speed were calculated according to the following formulas, respectively:
9. The apparatus of claim 6, wherein the evaluation unit is further configured to calculate an overall conversion efficiency η of the system according to the following formula:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111664295.9A CN114413961B (en) | 2021-12-30 | 2021-12-30 | Test evaluation device for dynamic laser wireless energy transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111664295.9A CN114413961B (en) | 2021-12-30 | 2021-12-30 | Test evaluation device for dynamic laser wireless energy transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114413961A CN114413961A (en) | 2022-04-29 |
| CN114413961B true CN114413961B (en) | 2024-04-26 |
Family
ID=81271447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111664295.9A Active CN114413961B (en) | 2021-12-30 | 2021-12-30 | Test evaluation device for dynamic laser wireless energy transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114413961B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04160337A (en) * | 1990-10-24 | 1992-06-03 | A T R Koudenpa Tsushin Kenkyusho:Kk | Experimental apparatus for laser transmission |
| CN103078678A (en) * | 2012-12-29 | 2013-05-01 | 中国航天科技集团公司第五研究院第五一三研究所 | Satellite-borne laser wireless energy transmission system |
| WO2013135044A1 (en) * | 2012-03-12 | 2013-09-19 | 中国电力科学研究院 | Unmanned aerial vehicle power transmission and transforming monitoring system based on laser quantum cryptography communications |
| CN104638779A (en) * | 2015-03-10 | 2015-05-20 | 金陵科技学院 | Wireless laser charging equipment for unmanned aerial vehicle and charging system of wireless laser charging equipment |
| WO2015097235A1 (en) * | 2013-12-23 | 2015-07-02 | University College Cork - National University Of Ireland, Cork | Three dimensional laser beam modulation-based modules for sensing, communications and remote energy delivery |
| CN107499164A (en) * | 2017-08-29 | 2017-12-22 | 北方民族大学 | Unmanned plane charging system and charging method based on laser |
| CN107707009A (en) * | 2017-08-21 | 2018-02-16 | 滁州万际航空器产业研究院有限公司 | A kind of unmanned plane laser charging device |
| CN107976632A (en) * | 2017-11-02 | 2018-05-01 | 武汉光谷航天三江激光产业技术研究院有限公司 | A kind of photoelectric conversion efficiency test device and method |
| WO2018131764A1 (en) * | 2017-01-10 | 2018-07-19 | 영남대학교 산학협력단 | System and method for transmitting power by using laser |
| CN108377020A (en) * | 2018-04-17 | 2018-08-07 | 郑州携能通信技术有限公司 | A kind of system of laser radio charging |
| CN109060317A (en) * | 2018-09-07 | 2018-12-21 | 西安工业大学 | The characterisitic parameter pilot system and its course of work of long-distance propagation of laser beam |
| CN111873822A (en) * | 2020-08-27 | 2020-11-03 | 北京煜邦电力技术股份有限公司 | Unmanned aerial vehicle wireless charging system and charging method |
| CN112202226A (en) * | 2020-10-10 | 2021-01-08 | 军事科学院系统工程研究院军事新能源技术研究所 | Long-distance wireless power supply device for unmanned aerial vehicle |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114942454A (en) * | 2019-03-08 | 2022-08-26 | 欧司朗股份有限公司 | Optical package for a LIDAR sensor system and LIDAR sensor system |
| US10879741B2 (en) * | 2019-05-31 | 2020-12-29 | At&T Intellectual Property I, L.P. | Wireless power transfer network management |
-
2021
- 2021-12-30 CN CN202111664295.9A patent/CN114413961B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04160337A (en) * | 1990-10-24 | 1992-06-03 | A T R Koudenpa Tsushin Kenkyusho:Kk | Experimental apparatus for laser transmission |
| WO2013135044A1 (en) * | 2012-03-12 | 2013-09-19 | 中国电力科学研究院 | Unmanned aerial vehicle power transmission and transforming monitoring system based on laser quantum cryptography communications |
| CN103078678A (en) * | 2012-12-29 | 2013-05-01 | 中国航天科技集团公司第五研究院第五一三研究所 | Satellite-borne laser wireless energy transmission system |
| WO2015097235A1 (en) * | 2013-12-23 | 2015-07-02 | University College Cork - National University Of Ireland, Cork | Three dimensional laser beam modulation-based modules for sensing, communications and remote energy delivery |
| CN104638779A (en) * | 2015-03-10 | 2015-05-20 | 金陵科技学院 | Wireless laser charging equipment for unmanned aerial vehicle and charging system of wireless laser charging equipment |
| WO2018131764A1 (en) * | 2017-01-10 | 2018-07-19 | 영남대학교 산학협력단 | System and method for transmitting power by using laser |
| CN107707009A (en) * | 2017-08-21 | 2018-02-16 | 滁州万际航空器产业研究院有限公司 | A kind of unmanned plane laser charging device |
| CN107499164A (en) * | 2017-08-29 | 2017-12-22 | 北方民族大学 | Unmanned plane charging system and charging method based on laser |
| CN107976632A (en) * | 2017-11-02 | 2018-05-01 | 武汉光谷航天三江激光产业技术研究院有限公司 | A kind of photoelectric conversion efficiency test device and method |
| CN108377020A (en) * | 2018-04-17 | 2018-08-07 | 郑州携能通信技术有限公司 | A kind of system of laser radio charging |
| CN109060317A (en) * | 2018-09-07 | 2018-12-21 | 西安工业大学 | The characterisitic parameter pilot system and its course of work of long-distance propagation of laser beam |
| CN111873822A (en) * | 2020-08-27 | 2020-11-03 | 北京煜邦电力技术股份有限公司 | Unmanned aerial vehicle wireless charging system and charging method |
| CN112202226A (en) * | 2020-10-10 | 2021-01-08 | 军事科学院系统工程研究院军事新能源技术研究所 | Long-distance wireless power supply device for unmanned aerial vehicle |
Non-Patent Citations (7)
| Title |
|---|
| 975 nm光纤耦合半导体激光器传能技术;宋镇江;张云昌;黄秀军;石德乐;吴世臣;孟祥翔;;空间电子技术;20180425(02);全文 * |
| 无人机激光无线能量传输及跟踪瞄准方法研究;崔子浩;华文深;李刚;刘晓光;严阳;;激光与红外;20180320(03);全文 * |
| 无人机激光跟踪与无线供能系统;李志鹏;张燕革;艾勇;冯晓芸;;激光技术;20170817(03);全文 * |
| 模块航天器间激光无线能量传输系统方案设想;石德乐;李振宇;吴世臣;程坤;;航天器工程;20131015(05);全文 * |
| 激光无线能量传输技术的发展;赵长明;王云石;郭陆灯;张海洋;张子龙;张立伟;郑征;李建;;激光技术;20200113(05);全文 * |
| 激光无线能量传输机理分析及仿真;石德乐;李振宇;吴世臣;张海洋;;空间电子技术;20130925(03);全文 * |
| 高效激光无线能量传输及转换实验;何滔;杨苏辉;张海洋;赵长明;徐鹏;郝嘉胤;王华昕;;中国激光;20130310(03);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114413961A (en) | 2022-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100534009C (en) | Testing device for influence of atmospheric turbulence to spacing laser communication | |
| CN102384836A (en) | Laser multi-parameter real-time measuring device | |
| CN102221450B (en) | Tracking-pointing deviation measurement device for laser system | |
| CN106248204A (en) | A kind of apparatus for measuring quality of laser beam of optical fiber output | |
| CN107356854B (en) | Light intensity calibration device and method of single photon photoelectric device | |
| CN102589684A (en) | Infrared laser measurement image surface alignment device | |
| CN106053356A (en) | System and method for measuring effective emissivity of metal solidifying point black body based on radiant quantity measurement | |
| CN106643668B (en) | Atmospheric laser occultation signal generating and detecting equipment | |
| CN106644058B (en) | A kind of device measuring high power continuous laser beam quality | |
| CN114413961B (en) | Test evaluation device for dynamic laser wireless energy transmission system | |
| CN105738372A (en) | Photo-thermal weak absorption test system and method | |
| Xu et al. | Research on test and evaluation method of laser wireless power transmission system | |
| CN114414212B (en) | Portable laser beam quality beta factor testing device | |
| CN109060317A (en) | The characterisitic parameter pilot system and its course of work of long-distance propagation of laser beam | |
| CN114088200B (en) | Strong laser far-field power attenuation sampling method | |
| CN113346949B (en) | Laser communication testing device and method based on light pipe simulation distance and divergence angle | |
| Guttman | Noninterceptive Beam Profiling of High‐Power Industrial Lasers: New technique uses Rayleigh scatter to fully characterize the laser beam and focus in near real‐time | |
| CN107833511B (en) | Optimization integrated double-light-path laser ionization effect simulation system | |
| CN110940640A (en) | System and method for testing strong light absorption spectrum | |
| CN213422482U (en) | High irradiance heat flow sensor calibration device | |
| CN115102025B (en) | Optimal position detection method for semiconductor laser diode beam combining reflector | |
| Blair et al. | R&D towards a laser based beam size monitor for the future linear collider | |
| CN111273150A (en) | Measuring system and measuring method for astigmatism of laser diode | |
| CN109668906A (en) | It is a kind of for measuring the measurement method and device of optical film layer laser damage threshold | |
| López-Oramas et al. | The IFAE/UAB and LUPM Raman LIDARs for Cherenkov Telescope Array Observatory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |