CN109279016A - Unmanned plane digital speech broadcasting system - Google Patents
Unmanned plane digital speech broadcasting system Download PDFInfo
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- CN109279016A CN109279016A CN201811288168.1A CN201811288168A CN109279016A CN 109279016 A CN109279016 A CN 109279016A CN 201811288168 A CN201811288168 A CN 201811288168A CN 109279016 A CN109279016 A CN 109279016A
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- 238000003860 storage Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000005266 casting Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007630 basic procedure Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/02—Aircraft not otherwise provided for characterised by special use
- B64C39/024—Aircraft not otherwise provided for characterised by special use of the remote controlled vehicle type, i.e. RPV
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D47/00—Equipment not otherwise provided for
- B64D47/02—Arrangements or adaptations of signal or lighting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U2101/00—UAVs specially adapted for particular uses or applications
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Toys (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The present invention relates to voice broadcasting system fields, in particular unmanned plane digital speech broadcasting system, including shell, cradle head structure and internal structure, it further include holder adapter ring, the cradle head structure is fixed on unmanned machine head by holder adapter ring, carried out data transmission by data connection mouth with unmanned plane, control chip is internally provided in holder adapter ring, the control chip sends the instruction of unmanned plane to voice broadcasting system, and power on, the cradle head structure includes rotary electric machine, the holder adapter ring is fixed on above rotary electric machine, the shell is provided with the control integrated system of articulatory configuration body and connection, the control integrated system and data connection mouth and ground control centre communicate to connect.The present invention can carry out pitching, horizontal movement, be required to play specified word content according to instruction, and system supports storage card, and the broadcasting of word content is carried out while realizing to specified region and carry out voice broadcast, and play music.
Description
Technical field
The present invention relates to voice broadcasting system fields, specially unmanned plane digital speech broadcasting system.
Background technique
The unmanned plane smart machine strong as application performance, is widely used in the fields such as army and police, electric power, is applied by carrying
Such as video camera, headlamp, megaphone are loaded, is provided a great convenience for industrial application.In the application of current unmanned plane,
Have by realizing function that long-range high-altitude is propagandaed directed to communicate in fuselage carry megaphone, but majority is to carry out reality by repacking intercom module
Existing, though method is simple, integrated performance is poor, increases fuselage weight bearing, lack of wisdom and innovation.It propagandas directed to communicate skill in current unmanned plane
In art, remain following deficiency: 1, current airborne megaphone appearance structure is big, unmanned plane need to be reequiped or install additional peripheral device structure with
It is used cooperatively, normally opening for unmanned plane is interfered to fly and fly；2, using intercom reequip airborne megaphone, user by pair
The machine of saying is propagandaed directed to communicate, but the pronunciation standard degree of user and articulation and clear degree, oral airflow and ambient wind are made an uproar etc. and all to be constituted pair
Voice content is clearly interfered and is polluted；3, the airborne end intercom reequiped, the radio transmission power of receiving module are usual
Up to 5W or more easily causes radio interference to unmanned plane, gently then influences unmanned aerial vehicle (UAV) control distance, even influences to fly when serious
Row safety.
Summary of the invention
It is mentioned above in the background art to solve the purpose of the present invention is to provide unmanned plane digital speech broadcasting system
Problem.The unmanned plane digital speech broadcasting system can carry out pitching, horizontal movement, realize that carrying out voice to specified region broadcasts
Report, and may be provided at the broadcasting that word content is carried out while playing music.
To achieve the above object, the invention provides the following technical scheme:
Unmanned plane digital speech broadcasting system, including shell, cradle head structure and internal structure further include holder adapter ring,
The cradle head structure is fixed on unmanned machine head by holder adapter ring, has data connection in the centre of holder adapter ring
Mouthful, carried out data transmission by data connection mouth with unmanned plane, is internally provided with control chip in holder adapter ring, the control core
Piece sends the instruction of unmanned plane to voice broadcasting system, and powers on, and the cradle head structure includes rotary electric machine, the cloud
Platform adapter ring is fixed on above rotary electric machine, and the shell is provided with the control integrated system of articulatory configuration body and connection, institute
It states control integrated system and data connection mouth and ground control centre communicates to connect.
Further, the rotary electric machine includes horizontally rotating motor and pitching motor with what control chip was connect,
In: the both ends for horizontally rotating motor are holder boom, and the pitching motor is mounted on the bottom of holder boom, the level
Rotary electric machine is connect with holder adapter ring, and the pitching motor is connect with cradle head structure.
Further, the shell includes pronunciation body case and control body case, in being internally integrated for pronunciation body case
Articulatory configuration body is equipped with control integrated system in the inside of control body case, and the articulatory configuration body, control integrated system connect
It is connected to control chip.
Further, the articulatory configuration body includes the radio reception cylinder successively installed, sound tube, source of sound concentrator, loudspeaker, institute
It states and is provided with memory card slot in control body case.
Further, the control integrated system includes the MP3 module connecting with control chip, power amplifier module, intelligent language
Sound module, noise reduction module, the MP3 module are connected to memory card slot, and MP3 module is played for stored audio file and history
Audio content, word content is converted to voice by the intelligent sound module, and exports specific pronunciation according to instruction, described
Power amplifier module sends loudspeaker to after the voice signal that intelligent sound module exports is amplified processing, in the noise reduction module
Portion is integrated with reversed sound wave storage element, reversed sonicated unit, reversed sound wave output unit.
Further, the reversed sonicated unit includes processing circuit and parser, to by unmanned plane blade and
The noise that motor generates under circumstances carries out the analysis of frequency noise, amplitude and phase, and generates and noise frequency phase
Identical with, amplitude and opposite in phase reversed sound wave；The reversed sound wave generated is stored in reversed sound wave storage element；It is using
During unmanned plane digital speech broadcasting system, noise reduction module persistently exports pre-stored reversed sound wave, and by loudspeaker
It plays out.
Compared with prior art, the beneficial effects of the present invention are:
The system is controlled using the signal link of unmanned plane, avoids signal interference；It can directly be mounted to when in use
Unmanned machine head carries out data connection by holder adapter ring, and without installing accessory additional, there are no need to reequip unmanned plane；Turned by level
Dynamic motor, pitching motor, system can carry out pitching, horizontal movement, realize to specified region and carry out voice broadcast；In use process
Word content editor is carried out in ground surface end software, play options is selected, sends control instruction, unmanned plane digital speech broadcasting system
It can be required according to instruction, play specified word content；Unmanned plane digital speech broadcasting system supports storage card, in ground surface end
Software selection plays the audio file in storage card, and may be provided at the broadcasting that word content is carried out while playing music.
Detailed description of the invention
Fig. 1 is that the long-range unmanned plane digital speech broadcasting system of the present invention is mounted to the effect picture on unmanned plane.
The long-range unmanned plane digital speech broadcasting system Facad structure figure of Fig. 2 present invention.
The long-range unmanned plane digital speech broadcasting system side structure schematic diagram of Fig. 3 present invention.
The long-range unmanned plane digital speech broadcasting system holder adapter ring schematic diagram of Fig. 4 present invention.
The long-range unmanned plane digital speech broadcasting system disassemblying structure schematic diagram of Fig. 5 present invention.
Fig. 6 present invention controls the basic flow chart of unmanned plane digital speech casting system.
The work flow diagram of Fig. 7 unmanned plane digital speech broadcasting system of the present invention.
In figure: 1- holder adapter ring, 11- data connection mouth, 101- data connection mouth, 2- memory card slot, 3- level turn
Dynamic motor, 4- holder boom, 5- pitching motor, 6- pronunciation body case, 601- radio reception cylinder, 602- sound tube, 603- source of sound concentrator,
604- loudspeaker, 7- control body case, 8- cradle head structure, 9- control integrated system.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " up/down end ", "inner", "outside" " front end ", " rear end ",
The orientation or positional relationship of the instructions such as " both ends ", " one end ", " other end " is to be based on the orientation or positional relationship shown in the drawings, only
It is that for the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " the
Two " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation " " is set
Set/be arranged with ", " socket ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, being also possible to can
Dismantling connection, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also pass through
Intermediary is indirectly connected, and can be the connection inside two elements.For the ordinary skill in the art, can have
Body situation understands the concrete meaning of above-mentioned term in the present invention.
Fig. 1-7 is please referred to, the present invention provides technical solution:
Unmanned plane digital speech broadcasting system, as shown in Figure 1, being unmanned plane digital speech broadcasting system carry in unmanned plane
The schematic diagram used on holder.It as shown in Figures 2 to 5, is the structural schematic diagram of unmanned plane digital speech broadcasting system, including cloud
Platform adapter ring 1, memory card slot 2 horizontally rotate motor 3, holder boom 4, pitching motor 5；Holder adapter ring 1 and unmanned plane number
Word voice broadcasting system is integrated.By holder adapter ring 1, unmanned plane digital speech broadcasting system is fixed on unmanned plane
Holder.There is data connection mouth 101 in the centre of holder adapter ring 1, data biography is carried out by data connection mouth 101 and unmanned plane
It is defeated.
Holder adapter ring 1 is not only realized and is fixed for unmanned plane digital speech broadcasting system to be attached with unmanned plane
Carry also realizes the communication connection of data.It is internally provided with control chip in holder adapter ring 1, the control inside holder adapter ring 1
The effect of coremaking piece is to control the transmission of data, sends the instruction of unmanned plane to voice broadcasting system, and power on.
The cradle head structure 8 of control movement is installed, cradle head structure 8 includes horizontal turns on unmanned plane digital speech broadcasting system
Dynamic motor 3, holder adapter ring 1, which is fixed on, horizontally rotates 3 top of motor.Horizontally rotate motor 3 and realizes that unmanned plane digital speech is broadcast
Reporting system is rotated in the horizontal direction；It is holder boom 4 at the both ends for horizontally rotating motor 3, holder boom 4 is used as unmanned plane
The bracket of digital speech broadcasting system.
Pitching motor 5 is installed in wherein one end of holder boom 4 Yu the connecting pin of unmanned plane digital speech broadcasting system,
Pitching motor 5 is rotated for controlling unmanned plane digital speech broadcasting system in pitch position.
In conjunction with motor 3, holder boom 4, pitching motor 5 is horizontally rotated, realize that unmanned plane digital speech broadcasting system carries out
Horizontal and pitching movement, by the rotation of different angle, voice broadcasting system can carry out voice broadcast to different zones.
It is additionally provided with memory card slot 2 (as memory card socket) in the tail portion of voice broadcasting system, storage can be clamped
It is downloaded to system, storage card mainly stores the audio file for needing to play.
As shown in figure 5, be unmanned plane digital speech broadcasting system structure disassembly diagram, system by shell, cradle head structure 8 and
Internal structure composition.Cradle head structure 8 is for fixing unmanned plane digital speech broadcasting system, and control system carries out horizontal, pitching
The rotation in direction；Shell includes pronunciation body case 6 and control body case 7.Pronunciation body case 6 is for concentrating sound, in sounding body
Shell 6 has been internally integrated articulatory configuration body.Articulatory configuration body includes radio reception cylinder 601, sound tube 602, source of sound concentrator 603, raises
Sound device 604, being capable of loudspeaker 604 plays in active set sound by articulatory configuration body.
Control integrated system 9 is installed in the inside of control body case 7.Control integrated system 9 is for receiving unmanned plane biography
The instruction sent carries out instruction processing, controls voice broadcasting system；Control integrated system 9 integrates MP3 module, power amplifier module, intelligence
Voice module (control chip is the master control system in part of it, that is, Fig. 7), noise reduction module.(connection) is deposited in MP3 module
Card storage card slot 2, the audio content that MP3 module is played for stored audio file and history, MP3 module can be read in storage card
Audio file；Word content can be converted to voice by intelligent sound module, and export specific pronunciation according to instruction；Power amplifier
Module sends loudspeaker 604, collection inside noise reduction module to after the voice signal that intelligent sound module exports is amplified processing
At having reversed sound wave storage element, reversed sonicated unit, reversed sound wave output unit.The reversed sonicated of noise reduction module
Unit includes that processing circuit and parser make an uproar to the noise generated under circumstances by unmanned plane blade and motor
The analysis of voice frequency, amplitude and phase, and generation is identical as noise frequency, amplitude is identical and the reversed sound wave of opposite in phase；It is raw
At reversed sound wave be stored in the reversed sound wave storage element inside noise reduction module；Using unmanned plane digital speech casting system
During system, noise reduction module persistently exports pre-stored reversed sound wave, and is played out by loudspeaker 604, because reversely
Sound wave is identical as the amplitude of noise sound wave but opposite in phase, and two sound waves can cancel out each other, to effectively reduce noise.Control
System 9 processed can control while play voice content and reversed sound wave, so that it is guaranteed that the clarity of voice broadcasting content.
As shown in fig. 6, for the basic procedure of control voice broadcasting system.In ground control terminal, pass through voice broadcasting system
Control software, select voice broadcast instruction, art taught skill by the digitized map of unmanned plane, send nobody for corresponding instruction
Machine.Art is taught skill by the digitized map that unmanned plane carries, unmanned plane digital speech broadcasting system is controlled, can effectively avoid radio
Digital interference, ensure unmanned plane during flying safety.
The control system of unmanned generator terminal receives the instruction that ground surface end is sent, and is analyzed and processed, and control voice is broadcast
The instruction of reporting system sends voice broadcasting system to by holder adapter ring 1 (data connection mouth 101), in voice broadcasting system
Control unit specified voice content is played according to instruction.
As shown in fig. 7, being the workflow of unmanned plane digital speech broadcasting system.It include nothing in ground control centre
The control software of man-machine digital's voice broadcasting system, for remotely controlling voice system.The content played is selected on software, it can
Selecting to play word content, playing the audio file being stored in advance in storage card or playing word content and audio simultaneously
File；When selection plays word content, the word content to be played directly is inputted at interface, and select to broadcast with different voice
Report word content；It is voice output by text conversion, the different pronunciation voice of simultaneous selection can be avoided effectively because of personal hair
Sound is inaccurate, ambient enviroment noise is big and caused by propaganda directed to communicate unclear problem.The word content broadcasted simultaneously, which will be stored in, to be deposited
In card storage, to the word content that when carrying out text casting again, optional history was inputted；In addition, depositing cash storage in software end
Template is propagandaed directed to communicate content, can be directly selected template content and is played out；During broadcasting, casting control can be carried out, into
The selection such as the switching of row content, volume adjustment；After the software of ground surface end carries out the operation of voice broadcast, operated instruction is passed
Give unmanned plane.It is received in the control centre of unmanned plane and processing analysis is carried out to instruction, (holder is transferred by holder adapter ring 1
Ring 1 is used as data hub transmission) send speech control system to.
Speech control system includes the multiple functions modules such as voice module, MP3 module, power amplifier module, noise reduction module.Language
The instruction that sound control system carrys out ground surface end transmission is handled, and is controlled multiple function module and worked.Pass through voice mould
Lteral data is converted to voice by block；By MP3 module, storage plays audio file；Voice is put by power amplifier module
Big processing is simultaneously finally broadcasted voice by loudspeaker unit, by the identical as frequency noise, amplitude of noise reduction module generation, but
The reversed sound wave of opposite in phase, the noise generated during unmanned plane during flying is weakened, and plays the effect of noise reduction.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. unmanned plane digital speech broadcasting system, including shell, cradle head structure (8) and internal structure, it is characterised in that: further include
Holder adapter ring (1), the cradle head structure (8) are fixed on unmanned machine head by holder adapter ring (1), transfer in holder
The centre of ring (1) has data connection mouth (101), is carried out data transmission by data connection mouth (101) with unmanned plane, turns in holder
It connects ring (1) and is internally provided with control chip, which sends the instruction of unmanned plane to voice broadcasting system, and connects electricity
Source, the cradle head structure (8) includes rotary electric machine, and the holder adapter ring (1) is fixed on above rotary electric machine, in the shell
Control integrated system (9) equipped with articulatory configuration body and connection, the control integrated system (9) and data connection mouth (11) with
And ground control centre communication connection.
2. unmanned plane digital speech broadcasting system according to claim 1, it is characterised in that: the rotary electric machine include with
Control chip connection horizontally rotates motor (3) and pitching motor (5), in which: the both ends for horizontally rotating motor (3) are
Holder boom (4), the pitching motor (5) is mounted on the bottom of holder boom (4), described to horizontally rotate motor (3) and holder
Adapter ring (1) connection, the pitching motor (5) connect with cradle head structure (8).
3. unmanned plane digital speech broadcasting system according to claim 1, it is characterised in that: the shell includes sounding body
Shell (6) and control body case (7) have been internally integrated articulatory configuration body in pronunciation body case (6), in control body case (7)
Inside be equipped with control integrated system (9), the articulatory configuration body, control integrated system (9) be connected to control chip.
4. unmanned plane digital speech broadcasting system according to claim 1, it is characterised in that: the articulatory configuration body includes
Radio reception cylinder (601), sound tube (602), source of sound concentrator (603), the loudspeaker (604) successively installed, the control body case (7)
On be provided with memory card slot (2).
5. unmanned plane digital speech broadcasting system according to claim 4, it is characterised in that: the control integrated system
It (9) include MP3 module, power amplifier module, the intelligent sound module, noise reduction module being connect with control chip, the MP3 module connection
The audio content played to memory card slot (2), MP3 module for stored audio file and history, the intelligent sound module
Word content is converted into voice, and specific pronunciation is exported according to instruction, the power amplifier module exports intelligent sound module
Voice signal amplify processing after send to loudspeaker (604), the noise reduction module has been internally integrated the storage of reversed sound wave
Unit, reversed sonicated unit, reversed sound wave output unit.
6. unmanned plane digital speech broadcasting system according to claim 5, it is characterised in that: the reversed sonicated list
Member includes that processing circuit and parser carry out noise to the noise generated under circumstances by unmanned plane blade and motor
The analysis of frequency, amplitude and phase, and generation is identical as noise frequency, amplitude is identical and the reversed sound wave of opposite in phase；It generates
Reversed sound wave be stored in reversed sound wave storage element；During using unmanned plane digital speech broadcasting system, noise reduction
Module persistently exports pre-stored reversed sound wave, and is played out by loudspeaker (604).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811288168.1A CN109279016A (en) | 2018-10-31 | 2018-10-31 | Unmanned plane digital speech broadcasting system |
| PCT/CN2019/091519 WO2020087941A1 (en) | 2018-10-31 | 2019-06-17 | Digital voice broadcasting system for unmanned aerial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811288168.1A CN109279016A (en) | 2018-10-31 | 2018-10-31 | Unmanned plane digital speech broadcasting system |
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| Publication Number | Publication Date |
|---|---|
| CN109279016A true CN109279016A (en) | 2019-01-29 |
Family
ID=65174652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811288168.1A Pending CN109279016A (en) | 2018-10-31 | 2018-10-31 | Unmanned plane digital speech broadcasting system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109279016A (en) |
| WO (1) | WO2020087941A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020087941A1 (en) * | 2018-10-31 | 2020-05-07 | 广州成至智能机器科技有限公司 | Digital voice broadcasting system for unmanned aerial vehicle |
| CN112260786A (en) * | 2020-10-29 | 2021-01-22 | 中电科西北集团有限公司 | Emergency broadcasting system and method |
| CN112611978A (en) * | 2020-11-30 | 2021-04-06 | 贵州电网有限责任公司 | Ground fault finding detector |
| CN112835032A (en) * | 2020-12-31 | 2021-05-25 | 中国海洋大学 | But linear array that unmanned aerial vehicle carried on interferes pronunciation warning sodar in epidemic prevention |
| CN113534830A (en) * | 2021-07-08 | 2021-10-22 | 广东纳萨斯通信科技有限公司 | Unmanned aerial vehicle search and rescue device and search and rescue method thereof |
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| CN115071987A (en) * | 2021-03-10 | 2022-09-20 | 深圳市科卫泰实业发展有限公司 | Megaphone every single move control system |
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| CN106533594A (en) * | 2017-01-04 | 2017-03-22 | 上海量明科技发展有限公司 | Broadcast and unmanned aerial vehicle combined system and implementation method thereof |
| CN207725638U (en) * | 2017-12-05 | 2018-08-14 | 四川豪斯特电子技术有限责任公司 | A kind of megaphone applied to unmanned plane |
| CN209506084U (en) * | 2018-10-31 | 2019-10-18 | 广州成至智能机器科技有限公司 | Unmanned plane digital speech broadcasting system |
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| WO2020087941A1 (en) * | 2018-10-31 | 2020-05-07 | 广州成至智能机器科技有限公司 | Digital voice broadcasting system for unmanned aerial vehicle |
| CN112260786A (en) * | 2020-10-29 | 2021-01-22 | 中电科西北集团有限公司 | Emergency broadcasting system and method |
| CN112611978A (en) * | 2020-11-30 | 2021-04-06 | 贵州电网有限责任公司 | Ground fault finding detector |
| CN112835032A (en) * | 2020-12-31 | 2021-05-25 | 中国海洋大学 | But linear array that unmanned aerial vehicle carried on interferes pronunciation warning sodar in epidemic prevention |
| CN113534830A (en) * | 2021-07-08 | 2021-10-22 | 广东纳萨斯通信科技有限公司 | Unmanned aerial vehicle search and rescue device and search and rescue method thereof |
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