CN215811408U - One-way dynamic balance test system of unmanned aerial vehicle rotor - Google Patents
One-way dynamic balance test system of unmanned aerial vehicle rotor Download PDFInfo
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- CN215811408U CN215811408U CN202120362687.9U CN202120362687U CN215811408U CN 215811408 U CN215811408 U CN 215811408U CN 202120362687 U CN202120362687 U CN 202120362687U CN 215811408 U CN215811408 U CN 215811408U
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Abstract
The utility model relates to the technical field of unmanned aerial vehicles, and discloses a unidirectional dynamic balance test system for an unmanned aerial vehicle rotor wing, which comprises a support frame, a rotating mechanism and an installation fixing mechanism, wherein the support frame comprises an upper bottom plate and a lower bottom plate, four corners of the lower end of the upper bottom plate are fixedly connected with four corners of the upper end of the lower bottom plate through support rods, the rotating mechanism comprises a driving motor and a rotating rod, the driving motor is fixedly arranged at the center of the lower end of the upper bottom plate, the output end of the driving motor is fixedly connected with the lower end of the rotating rod through a first coupler, the upper end of the rotating rod penetrates through the middle part of the upper bottom plate and extends upwards, and the rod wall of the rotating rod is rotatably connected with the upper bottom plate through a first rolling bearing. This one-way dynamic balance test system of unmanned aerial vehicle rotor can rise outer protection network and a plurality of interior protection network when the test to cushion the protection, improve the security performance, the back that finishes of the test can descend outer protection network and a plurality of interior protection network, and the people of being convenient for use.
Description
Technical Field
The utility model relates to the technical field of unmanned aerial vehicles, in particular to a unidirectional dynamic balance test system for a rotor wing of an unmanned aerial vehicle.
Background
The unmanned plane is called unmanned plane for short, and is an unmanned plane operated by radio remote control equipment and a self-contained program control device. The machine has no cockpit, but is provided with an automatic pilot, a program control device and other equipment. The personnel on the ground, the naval vessel or the mother aircraft remote control station can track, position, remotely control, telemeter and digitally transmit the personnel through equipment such as a radar.
Unmanned aerial vehicle rotors typically consist of multiple blades, each of which may have some difference in aerodynamic force. In the case of a rotor rotating at high speed, the aerodynamic differences described above produce alternating loads on the rotor shaft, which are manifested as dynamic imbalances. The dynamic unbalance phenomenon not only arouses the vibration and the noise of aircraft, and can reduce flight performance, control quality and life, therefore, the rotor need carry out dynamic balance test analysis when using, but among the prior art, the unmanned aerial vehicle rotor is when carrying out the dynamic balance test, need be with a set of paddle fixed mounting on test equipment, it is rotatory to drive through the motor, and carry out dynamic balance detection to two rotors through connecting rod and pressure sensor, however, among the prior art, there is not the protection setting on the test equipment of the one-way dynamic balance of unmanned aerial vehicle rotor, and when the motor drives two paddle fast rotations, can produce high-frequency vibration, thereby make two paddles and equipment break away from easily, there is the potential safety hazard, therefore, an unmanned aerial vehicle rotor one-way dynamic balance test system is proposed.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides a system for testing the unidirectional dynamic balance of the rotor of the unmanned aerial vehicle, which has the advantages of protecting the rotation of the blades of the unmanned aerial vehicle and improving the test safety, and solves the problems that the test equipment for the unidirectional dynamic balance of the rotor of the unmanned aerial vehicle is not provided with a protection device, and when a motor drives two blades to rotate rapidly, high-frequency vibration is generated, so that the two blades are easily separated from the equipment, and potential safety hazards exist.
(II) technical scheme
In order to protect the rotation of the unmanned aerial vehicle paddle and improve the test safety, the utility model provides the following technical scheme: an unmanned aerial vehicle rotor unidirectional dynamic balance test system comprises a support frame, a rotating mechanism and an installation fixing mechanism, wherein the support frame comprises an upper bottom plate and a lower bottom plate, the four corners of the lower end of the upper bottom plate are fixedly connected with the four corners of the upper end of the lower bottom plate through support rods, the rotating mechanism comprises a driving motor and a rotating rod, the driving motor is fixedly arranged at the center of the lower end of the upper bottom plate, the output end of the driving motor is fixedly connected with the lower end of the rotating rod through a first coupler, the upper end of the rotating rod penetrates through the middle part of the upper bottom plate and extends upwards, the rod wall of the rotating rod is rotatably connected with the upper bottom plate through a first rolling bearing, a U-shaped plate is fixedly connected with the upper end of the rotating rod, a fixed rod is rotatably connected with the inside of the U-shaped plate through a rotating shaft, the fixed rod is connected with the installation fixing mechanism, and the circular plate is arranged above the upper bottom plate, the upper end of the circular plate is fixedly connected with two symmetrically arranged pressure sensors, the upper ends and the lower ends of the two pressure sensors are respectively and rotatably connected with the lower ends of the two connecting rods through first shaft pins, the upper ends of the two connecting rods are respectively connected with the mounting and fixing mechanism, and a protection mechanism is further arranged above the upper bottom plate;
the protective mechanism comprises an outer protective net and a plurality of inner protective nets, the outer protective net is sleeved outside the upper bottom plate, the inner protective nets are located inside the outer protective net and distributed in an annular shape, the inner protective nets are connected with the outer protective net through a plurality of springs, the lower ends of the left outer side wall and the right outer side wall of the outer protective net are fixedly connected with first fixed blocks, the two first fixed blocks are respectively sleeved with threaded rods through threaded holes, the lower ends of the two threaded rods are respectively rotatably connected with the left side and the right side of the upper end of the lower bottom plate through second rolling bearings, the lower ends of the rod walls of the two threaded rods are respectively fixedly sleeved with first bevel gears, the middle part of the upper end of the lower bottom plate is fixedly connected with a double-shaft motor, the left side and the right side of the double-shaft motor are respectively rotatably connected with driving rods through second couplers, and the two opposite ends of the two driving rods are respectively fixedly connected with second bevel gears, and the two first bevel gears are respectively in meshed connection with the two second bevel gears.
Preferably, the mounting and fixing mechanism comprises a mounting shaft, the mounting shaft is transversely arranged above the rotating rod, a cavity is formed in the center of the inside of the mounting shaft, mounting openings are formed in two ends of the mounting shaft, a moving plate is arranged in the cavity, moving rods are fixedly connected to two ends of the moving plate, two opposite ends of the two moving rods respectively penetrate through two side walls of the cavity and respectively extend into the two mounting openings, pressing plates are fixedly connected to two opposite ends of the two moving rods, strip-shaped holes matched with the moving rods are formed in the left side wall and the right side wall of the cavity, locking bolts are rotatably connected to the upper side wall of the cavity through third rolling bearings, nuts are fixedly inserted in the middle of the upper end of the moving plate and are in threaded connection with the locking bolts through the nuts, and the upper end of the fixing rod is fixedly connected to the middle of the lower side wall of the mounting shaft, the upper ends of the two connecting rods are respectively and rotatably connected with the left side and the right side of the lower side wall of the mounting shaft through second shaft pins.
Preferably, two vertically arranged slide bars are fixedly arranged inside the cavity, the two slide bars are symmetrically arranged, and the movable plate is in sliding sleeve joint with the two slide bars through the two through holes.
Preferably, the lower side walls of the two mounting openings are fixedly connected with a plurality of anti-skidding tooth sockets which are uniformly distributed.
Preferably, the lower ends of the front outer side wall and the rear outer side wall of the outer protective net are fixedly connected with second fixed blocks, the second fixed blocks are sleeved with guide rods through guide holes in a sliding mode, and the lower ends of the guide rods are fixedly connected with the lower bottom plate.
Preferably, the lower end of the lower bottom plate is fixedly connected with a non-slip mat.
(III) advantageous effects
Compared with the prior art, the utility model provides a unidirectional dynamic balance test system for a rotor wing of an unmanned aerial vehicle, which has the following beneficial effects:
1. the unmanned aerial vehicle rotor wing one-way dynamic balance test system is characterized in that two driving rods are driven to rotate by a double-shaft motor, two second bevel gears are driven to rotate by the two driving rods, two first bevel gears drive two threaded rods to rotate, the two threaded rods drive two first fixing blocks to move upwards, the two first fixing blocks drive an outer protective net and an inner protective net to move upwards, so that the outer protective net and the inner protective net are moved to the upper part of an upper bottom plate, when blades are separated during rotation, the blades impact the inner protective net, the inner protective net can be buffered by a plurality of springs, so that the impact force of the blades and the inner protective net is reduced, the damage is reduced, the safety is improved, after the test is finished, the outer protective net and the inner protective nets can be driven to move downwards by the double-shaft motor, is convenient for people to use.
2. This one-way dynamic balance test system of unmanned aerial vehicle rotor, through the installation axle that is equipped with, the movable plate, the nut, the locking bolt, two carriage release levers, two pressure strips and two installation open-ended are mutually supported, be convenient for carry out fixed mounting with two unmanned aerial vehicle rotors, through the upper plate that is equipped with, the lower plate, a plurality of bracing pieces, driving motor, the bull stick, the U-shaped board, the dead lever, the disc, mutually supporting of two pressure sensor and two connecting rods, be convenient for drive two rotors and rotate, and can test the one-way dynamic balance of two rotors according to two pressure sensor.
Drawings
Fig. 1 is a schematic structural view of a unidirectional dynamic balance test system for a rotor of an unmanned aerial vehicle according to the present invention;
fig. 2 is an enlarged structural view of a portion a in fig. 1 of a unidirectional dynamic balance testing system for an unmanned aerial vehicle rotor wing according to the present invention;
fig. 3 is a schematic side structural view of an installation shaft in fig. 1 of a unidirectional dynamic balance testing system for an unmanned aerial vehicle rotor wing according to the present invention;
fig. 4 is a schematic view of a top-view structure of an unmanned aerial vehicle rotor unidirectional dynamic balance test system provided by the utility model, and the outer protective net and the plurality of inner protective nets in fig. 1 are shown.
In the figure: the device comprises an upper bottom plate 1, a lower bottom plate 2, a supporting rod 3, a driving motor 4, a rotating rod 5, a mounting shaft 6, a moving plate 7, a moving rod 8, a pressing plate 9, a U-shaped plate 10, a fixing rod 11, a connecting rod 12, a circular plate 13, a pressure sensor 14, a sliding rod 15, an anti-skid tooth groove 16, an external protective net 17, a spring 18, an internal protective net 19, an anti-skid pad 20, a locking bolt 21, a nut 22, a first fixed block 23, a threaded rod 24, a biaxial motor 25, a driving rod 26, a second fixed block 27 and a guide rod 28.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an unmanned aerial vehicle rotor unidirectional dynamic balance test system comprises a support frame, a rotating mechanism and a mounting and fixing mechanism, wherein the support frame comprises an upper base plate 1 and a lower base plate 2, four corners of the lower end of the upper base plate 1 are fixedly connected with four corners of the upper end of the lower base plate 2 through support rods 3, the rotating mechanism comprises a driving motor 4 and a rotating rod 5, the driving motor 4 is fixedly arranged at the center of the lower end of the upper base plate 1, the output end of the driving motor 4 is fixedly connected with the lower end of the rotating rod 5 through a first coupler, the upper end of the rotating rod 5 penetrates through the middle part of the upper base plate 1 and extends upwards, the rod wall of the rotating rod 5 is rotatably connected with the upper base plate 1 through a first rolling bearing, the upper end of the rotating rod 5 is fixedly connected with a U-shaped plate 10, the inside of the U-shaped plate 10 is rotatably connected with a fixing rod 11 through a rotating shaft, the fixing rod 11 is connected with the mounting and fixing mechanism, a circular plate 13 is arranged above the upper base plate 1, the upper end of the circular plate 13 is fixedly connected with two symmetrically arranged pressure sensors 14, the upper ends and the lower ends of the two pressure sensors 14 are respectively and rotatably connected with the lower ends of the two connecting rods 12 through first shaft pins, the upper ends of the two connecting rods are respectively connected with a mounting and fixing mechanism, and a protection mechanism is also arranged above the upper bottom plate 1;
the protection mechanism comprises an outer protection net 17 and a plurality of inner protection nets 19, the outer protection net 17 is sleeved on the outer side above the upper base plate 1, the plurality of inner protection nets 19 are all located inside the outer protection net 17 and distributed in an annular shape, the inner protection nets 19 are connected with the outer protection net 17 through a plurality of springs 18, the lower ends of the left outer side wall and the right outer side wall of the outer protection net 17 are fixedly connected with first fixing blocks 23, the two first fixing blocks 23 are respectively sleeved with threaded rods 24 through threaded holes, the lower ends of the two threaded rods 24 are respectively rotatably connected with the left side and the right side of the upper end of the lower base plate 2 through second rolling bearings, the lower ends of the rod walls of the two threaded rods 24 are respectively fixedly sleeved with first bevel gears, the middle part of the upper end of the lower base plate 2 is fixedly connected with a double-shaft motor 25, the left side and the right side of the double-shaft motor 25 are respectively rotatably connected with driving rods 26 through second couplers, and the two opposite ends of the two driving rods 26 are respectively fixedly connected with second bevel gears, the two first bevel gears are respectively in meshed connection with the two second bevel gears.
The mounting and fixing mechanism comprises a mounting shaft 6, the mounting shaft 6 is transversely arranged above the rotating rod 5, a cavity is formed in the center of the interior of the mounting shaft 6, mounting openings are formed in two ends of the mounting shaft 6, a moving plate 7 is arranged in the cavity, moving rods 8 are fixedly connected to two ends of the moving plate 7, two opposite ends of each moving rod 8 respectively penetrate through two side walls of the cavity and respectively extend into the two mounting openings, pressing plates 9 are fixedly connected to two opposite ends of each moving rod 8, strip-shaped holes matched with the moving rods 8 are formed in the left side wall and the right side wall of the cavity, locking bolts 21 are rotatably connected to the upper side wall of the cavity through third rolling bearings, nuts 22 are fixedly inserted in the middle of the upper end of the moving plate 7 and are in threaded connection with the locking bolts 21 through the nuts 22, and the upper end of the fixing rod 11 is fixedly connected to the middle of the lower side wall of the mounting shaft 6, the upper ends of the two connecting rods 12 are respectively rotatably connected with the left side and the right side of the lower side wall of the mounting shaft 6 through second shaft pins, the two blades are respectively inserted into the two mounting openings, the locking bolt 21 is rotated to drive the nut 22 to move downwards, the nut 22 drives the movable plate 7 to move downwards, and the movable plate 7 drives the two pressing plates 9 to move downwards through the two moving rods 8, so that the two blades can be pressed and fixed, and the two blades are convenient to detach.
The fixed slide bar 15 that is equipped with two vertical settings in the inside of cavity, two slide bar 15 symmetries set up, and movable plate 7 cup joints through two through-holes and two slide bar 15 slides, and is more stable when can making movable plate 7 reciprocate to can make two pressure strips 9 more firm with two paddle are fixed, improve and detect the precision.
The lower side walls of the two mounting openings are fixedly connected with a plurality of evenly distributed anti-skidding tooth sockets 16, so that the two blades can be more firmly mounted, and the blades are prevented from being separated from the mounting openings.
Two equal fixedly connected with second fixed blocks 27 of lateral wall lower extreme around outer protection network 17, two second fixed blocks 27 all have cup jointed guide bar 28 through the guiding hole slip, and the lower extreme of two guide bars 28 all with lower plate 2 fixed connection, it is more stable when can making outer protection network 17 reciprocate, and improve outer protection network 17's bearing capacity.
The lower extreme fixedly connected with slipmat 20 of lower plate 2 can make the device place more stably, and the device rocks and influences the detection effect when avoiding detecting.
In conclusion, when the unidirectional dynamic balance test system for the rotor wing of the unmanned aerial vehicle is used, two rotor wings to be detected are respectively inserted into two mounting openings, the fastening bolt 21 is rotated to drive the nut 22 to move downwards, the nut 22 drives the moving plate 7 to move downwards, the moving plate 7 drives the two pressing plates 9 to move downwards through the two moving rods 8, thereby the two rotors can be pressed and fixed, the rotating rod 5 is driven to rotate by the arranged driving motor 4, the rotating rod 5 drives the U-shaped plate 10 to rotate, the U-shaped plate 10 drives the fixed rod 11 to rotate, the fixed rod 11 drives the installation shaft 6 to rotate, the installation shaft 6 drives the two rotors to rotate, the two rotors are influenced by aerodynamic force when rotating, when the two rotors are subjected to different aerodynamic forces, the two rotors and the mounting shaft 6 are out of balance, the mounting shaft 6 applies different pressures to the two pressure sensors 14 through the two connecting rods 12, the dynamic balance of the two rotors can be detected according to different pressures of the two pressure sensors 14;
during testing, the double-shaft motor 25 is arranged to drive the two driving rods 26 to rotate, the two driving rods 26 are arranged to drive the two second bevel gears to rotate, the two second bevel gears drive the two first bevel gears to rotate, the two first bevel gears drive the two threaded rods 24 to rotate, the two threaded rods 24 rotate to drive the two first fixing blocks 23 to move upwards, the two first fixing blocks 23 drive the outer protective net 17 and the inner protective net 19 to move upwards, so that the outer protective net 17 and the inner protective net 19 are moved to the upper part of the upper bottom plate 1, when the paddle is separated in rotation, the paddle impacts on the inner protective net 19, the inner protective net 19 can be buffered through the plurality of springs 18, the impact force between the paddle and the inner protective net 19 is reduced, damage is reduced, safety is improved, after testing is finished, the outer protective net 17 and the plurality of inner protective nets 19 can be driven to move downwards through the double-shaft motor 4, is convenient for people to use.
It is to be noted that the term "comprises," "comprising," or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an one-way dynamic balance test system of unmanned aerial vehicle rotor, includes support frame, rotary mechanism and installation fixed establishment, its characterized in that: the support frame comprises an upper base plate (1) and a lower base plate (2), the four corners of the lower end of the upper base plate (1) are fixedly connected with the four corners of the upper end of the lower base plate (2) through support rods (3), the rotating mechanism comprises a driving motor (4) and a rotating rod (5), the driving motor (4) is fixedly arranged at the center of the lower end of the upper base plate (1), the output end of the driving motor (4) is fixedly connected with the lower end of the rotating rod (5) through a first coupler, the upper end of the rotating rod (5) penetrates through the middle of the upper base plate (1) and extends upwards, the rod wall of the rotating rod (5) is rotatably connected with the upper base plate (1) through a first rolling bearing, the upper end of the rotating rod (5) is fixedly connected with a U-shaped plate (10), the inside of the U-shaped plate (10) is rotatably connected with a fixed rod (11) through a rotating shaft, and the fixed rod (11) is connected with a mounting and fixing mechanism, a circular plate (13) is arranged above the upper base plate (1), the upper end of the circular plate (13) is fixedly connected with two symmetrically arranged pressure sensors (14), the upper ends and the lower ends of the two pressure sensors (14) are respectively and rotatably connected with the lower ends of two connecting rods (12) through first shaft pins, the upper ends of the two connecting rods (12) are respectively connected with a mounting and fixing mechanism, and a protection mechanism is further arranged above the upper base plate (1);
the protective mechanism comprises an outer protective net (17) and a plurality of inner protective nets (19), the outer protective net (17) is sleeved on the outer side of the upper bottom plate (1), the inner protective nets (19) are located inside the outer protective net (17) and distributed in an annular shape, the inner protective nets (19) are connected with the outer protective net (17) through a plurality of springs (18), the lower ends of the left outer side wall and the right outer side wall of the outer protective net (17) are fixedly connected with first fixing blocks (23), the two first fixing blocks (23) are respectively sleeved with threaded rods (24) through threaded holes in a threaded manner, the lower ends of the two threaded rods (24) are respectively rotatably connected with the left side and the right side of the upper end of the lower bottom plate (2) through second rolling bearings, the lower ends of the rod walls of the two threaded rods (24) are respectively fixedly sleeved with first bevel gears, and the middle part of the upper end of the lower bottom plate (2) is fixedly connected with a double-shaft motor (25), the left side and the right side of the double-shaft motor (25) are rotatably connected with driving rods (26) through second couplers, two opposite ends of the driving rods (26) are fixedly connected with second bevel gears, and the first bevel gears are respectively in meshed connection with the two second bevel gears.
2. The unidirectional dynamic balance test system of unmanned aerial vehicle rotor of claim 1, characterized in that: installation fixed establishment includes installation axle (6), the top that installation axle (6) is located bull stick (5) transversely sets up and installs the inside center department of axle (6) and has seted up the cavity, and the both ends of installation axle (6) have all seted up the installation opening, the inside of cavity is equipped with movable plate (7), the equal fixedly connected with carriage release lever (8) in both ends of movable plate (7), two the opposite both ends of carriage release lever (8) run through two lateral walls of cavity respectively and extend to two installation open-ended insides respectively, and the equal fixedly connected with pressure strip (9) in both ends that two carriage release levers (8) are opposite, two lateral walls all seted up with carriage release lever (8) assorted bar hole about the cavity, the last lateral wall of cavity rotates through the third antifriction bearing and is connected with locking bolt (21), the upper end middle part fixed the inserting of movable plate (7) is equipped with nut (22) and through nut (22) and locking bolt (21) threaded connection The upper end of the fixing rod (11) is fixedly connected with the middle part of the lower side wall of the mounting shaft (6), and the upper ends of the connecting rods (12) are respectively and rotatably connected with the left side and the right side of the lower side wall of the mounting shaft (6) through second shaft pins.
3. The unidirectional dynamic balance test system of unmanned aerial vehicle rotor of claim 2, characterized in that: the cavity is internally and fixedly provided with two vertically arranged sliding rods (15), the two sliding rods (15) are symmetrically arranged, and the movable plate (7) is in sliding sleeve joint with the two sliding rods (15) through two through holes.
4. The unidirectional dynamic balance test system of unmanned aerial vehicle rotor of claim 2, characterized in that: and the lower side walls of the two mounting openings are fixedly connected with a plurality of anti-skidding tooth grooves (16) which are uniformly distributed.
5. The unidirectional dynamic balance test system of unmanned aerial vehicle rotor of claim 1, characterized in that: two equal fixedly connected with second fixed block (27) of lateral wall lower extreme around outer protection network (17), two guide bar (28), two are all cup jointed through the guiding hole slip in second fixed block (27) the lower extreme of guide bar (28) all with lower plate (2) fixed connection.
6. The unidirectional dynamic balance test system of unmanned aerial vehicle rotor of claim 1, characterized in that: the lower end of the lower bottom plate (2) is fixedly connected with an anti-skid pad (20).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120362687.9U CN215811408U (en) | 2021-02-08 | 2021-02-08 | One-way dynamic balance test system of unmanned aerial vehicle rotor |
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| CN202120362687.9U CN215811408U (en) | 2021-02-08 | 2021-02-08 | One-way dynamic balance test system of unmanned aerial vehicle rotor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116594082A (en) * | 2023-07-19 | 2023-08-15 | 山东慧宇航空遥感技术有限公司 | Balanced testing arrangement of hyperspectral remote sensing geological survey appearance |
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2021
- 2021-02-08 CN CN202120362687.9U patent/CN215811408U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116594082A (en) * | 2023-07-19 | 2023-08-15 | 山东慧宇航空遥感技术有限公司 | Balanced testing arrangement of hyperspectral remote sensing geological survey appearance |
| CN116594082B (en) * | 2023-07-19 | 2023-09-29 | 山东慧宇航空遥感技术有限公司 | Balanced testing arrangement of hyperspectral remote sensing geological survey appearance |
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