CN107565987A - A kind of wireless broadcast system on unmanned plane - Google Patents
A kind of wireless broadcast system on unmanned plane Download PDFInfo
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Abstract
The invention discloses a kind of wireless broadcast system on unmanned plane, including audio collection processing unit and public address set, audio collection processing unit includes microphone, pre-amplification circuit, low-pass filter circuit, analog-digital converter, controller and wireless transmitter module, the public address set is arranged in housing, housing is arranged on unmanned plane, the surface of housing is provided with continuant orifice, and public address set includes wireless receiving module, microprocessor, digital analog converter, audio power amplifying circuit and loudspeaker；The bottom surface of housing is provided with the solar panel being used for for public address set power supply；Microphone, pre-amplification circuit, low-pass filter circuit, analog-digital converter, controller, wireless transmitter module, wireless receiving module, microprocessor, digital analog converter, audio power amplifying circuit and loudspeaker are linked in sequence successively；The present invention can be achieved live high-altitude and propaganda directed to communicate, and the audio signal at microphone end is amplified into output, sound can be passed at any time, to realize that voice broadcast service is clear.
Description
Technical Field
The invention relates to the technical field of electronic communication, in particular to a wireless broadcasting system for an unmanned aerial vehicle.
Background
Since the 20 th century, the global demand for military unmanned aerial vehicles has been increasing, and major countries in the world have increased the research and development efforts of unmanned aerial vehicle projects under the guidance of macroscopic policies; meanwhile, the demand of unmanned aerial vehicles in the civil field is increasing day by day.
The history of unmanned aerial vehicle development in China has been over 40 years, a relatively complete unmanned aerial vehicle development system is established domestically, and the unmanned aerial vehicle development system is close to the international advanced technical level in the aspects of small-sized, medium-short range, medium-high altitude long-endurance unmanned aerial vehicles. In recent years, the application field of unmanned aerial vehicles is continuously expanded, and the unmanned aerial vehicles show great potential in the fields of resource exploration, ocean monitoring, aerial photogrammetry, agriculture and forestry monitoring and the like.
However, at present, the civil unmanned aerial vehicle industrialization starts soon, and the policies of opening and using the unmanned aerial vehicle in the low-altitude navigation field are still imperfect. In 2010, the State Council and the Central military Commission printed the opinion on the deepening of the low-altitude airspace management reform in China, and deployed the deepening of the low-altitude airspace management reform in China. In 2013, the department of flight standards of the civil aviation administration in China issued the temporary regulations on the management of drivers of civil unmanned aircraft systems. But at the present stage, the laws and regulations managed by unmanned aerial vehicles still exist in grey zones.
According to the 2015-2019-year market status and investment prospect analysis report of the Chinese civil unmanned aerial vehicle published by the research center of the New thinking industry, the Chinese civil unmanned aerial vehicle has small market scale and low growth speed before 2010 and is mainly applied to the markets such as disaster rescue, map mapping and the like. After 2011, the market for civil unmanned aerial vehicles of chinese consumer grade, represented by great jiang, has grown up rapidly. In recent years, unmanned aerial vehicles are widely used in the fields of aerial photography, logistics and the like, and unmanned aerial vehicle delivery and popular live show adopt unmanned aerial vehicles to carry out aerial photography, so that civil unmanned aerial vehicles are widely concerned. China consumer-grade unmanned aerial vehicles are in the front of the world, and have certain advantages in market share, research and development manufacturing capability and application range and depth. With the simple operation of the consumption-level unmanned aerial vehicle, the price is reduced, the consumption-level unmanned aerial vehicle is gradually changed from small consumers such as model airplane fans to mass consumption products, and the market scale growth speed is very fast. But different from the consumer-grade unmanned aerial vehicle market, the domestic professional-grade unmanned aerial vehicle market has not seen explosive growth.
At present, civil unmanned aerial vehicles are used for police, line patrol, agriculture and forestry plant protection, aerial photography, express delivery and scientific research in the development direction. Driven by the consumption market, the unmanned aerial vehicle market in China is expected to rapidly increase in the coming years in the future. In the future, civil unmanned aerial vehicles are expected to develop towards intellectualization, safety and multi-functionalization. Along with the development of world economy, the urbanization level is improved, the urban scale and complexity are gradually improved, higher requirements are provided for the difficulty of police law enforcement management and fire rescue, and the unmanned aerial vehicle can be applied to the unmanned aerial vehicle and can broadcast messages at any time. The high-rise and super high-rise buildings in cities are increasing day by day, and the ultra-high scaling ladder aiming at the high-rise and super high-rise buildings is introduced in only a few big cities which are developed economically in China, so that the price is high, and the maintenance is difficult. When a fire disaster in a large scene is faced, the fire-fighting rescue vehicle is limited by the smoothness of areas and streets, the speed of police dispatch and the like, and the fire-fighting rescue vehicle cannot arrive at a goods recognizing site in the first time under many conditions, so that effective rescue information can not be timely and effectively provided for people to be rescued, and rescue is delayed. And the fire fighting truck is mainly used for fighting fire by firemen, and the firemen are directly close to a fire scene, so that the fire fighting truck has higher danger and sometimes even causes unnecessary casualties. Because unmanned aerial vehicle does not need the driver, and the size is little moreover, has all obtained extensive application in each field. At present, the unmanned aerial vehicle is mostly used for scouting and patrolling, but the existing unmanned aerial vehicle rarely has the function of wireless broadcasting, and the difficulty is brought to timely broadcasting of patrol and scout system information.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a wireless broadcasting system for an unmanned aerial vehicle.
The invention adopts the following technical scheme for solving the technical problems:
the invention provides a wireless broadcasting system for an unmanned aerial vehicle, which comprises an audio acquisition and processing device and a sound amplifying device, wherein the audio acquisition and processing device comprises a microphone, a pre-amplification circuit, a low-pass filter circuit, an analog-to-digital converter, a controller and a wireless transmitting module; the bottom surface of the shell is provided with a solar cell panel for supplying power to the sound amplifying device; wherein,
the microphone, the pre-amplification circuit, the low-pass filter circuit, the analog-to-digital converter, the controller, the wireless transmitting module, the wireless receiving module, the microprocessor, the digital-to-analog converter, the audio power amplification circuit and the loudspeaker are sequentially connected;
the low-pass filter circuit comprises an NPN triode, first to fifth resistors, a first capacitor, a second capacitor and an amplifier; the collector of the NPN triode is connected with a +5V power supply, the emitter of the NPN triode is connected with one end of a first resistor, one end of a first capacitor and one end of a fifth resistor respectively, the other end of the fifth resistor is connected with one end of a fourth resistor and the ground respectively, the other end of the first resistor is connected with one end of a second resistor and one end of a second capacitor respectively, the other end of the second resistor is connected with the positive input end of an amplifier and the other end of the first capacitor respectively, the negative input end of the amplifier is connected with the other end of the fourth resistor and one end of a third resistor respectively, the power supply end of the amplifier is connected with the +5V power supply, the grounding end of the amplifier is connected with the ground, and the output end of the amplifier is connected with the other end of the second capacitor and the other.
As a further optimization scheme of the wireless broadcast system used on the unmanned aerial vehicle, the position of the loudspeaker corresponds to the position of the sound through hole on the surface of the shell.
As a further optimized scheme of the wireless broadcast system for the unmanned aerial vehicle, the microprocessor is an ARM 10.
As a further optimization scheme of the wireless broadcast system for the unmanned aerial vehicle, the wireless transmitting module is a ZigBee wireless transmitting module.
As a further optimization scheme of the wireless broadcast system used for the unmanned aerial vehicle, the model of the loudspeaker is TSB 28E-8A.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
(1) the invention can realize on-site high-altitude calling, amplify and output the audio signal of the microphone end, can convey the sound at any time, so as to realize clear voice broadcast;
(2) according to the invention, the solar cell panel is additionally arranged at the bottom of the shell, so that the sound amplifying device can be charged by utilizing sunlight in real time;
(3) the invention has convenient operation, light weight and convenient carrying.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the attached drawings:
as shown in fig. 1, a wireless broadcasting system for an unmanned aerial vehicle includes an audio acquisition processing device and a sound amplifying device, the audio acquisition processing device includes a microphone, a pre-amplification circuit, a low-pass filter circuit, an analog-to-digital converter, a controller and a wireless transmitting module, the sound amplifying device is disposed in a housing, the housing is disposed on the unmanned aerial vehicle, a sound through hole is disposed on a surface of the housing, and the sound amplifying device includes a wireless receiving module, a microprocessor, a digital-to-analog converter, an audio power amplifying circuit and a speaker; the bottom surface of the shell is provided with a solar cell panel for supplying power to the sound amplifying device; wherein,
the microphone, the pre-amplification circuit, the low-pass filter circuit, the analog-to-digital converter, the controller, the wireless transmitting module, the wireless receiving module, the microprocessor, the digital-to-analog converter, the audio power amplification circuit and the loudspeaker are sequentially connected;
the low-pass filter circuit comprises an NPN triode, first to fifth resistors, a first capacitor, a second capacitor and an amplifier; the collector of the NPN triode is connected with a +5V power supply, the emitter of the NPN triode is connected with one end of a first resistor, one end of a first capacitor and one end of a fifth resistor respectively, the other end of the fifth resistor is connected with one end of a fourth resistor and the ground respectively, the other end of the first resistor is connected with one end of a second resistor and one end of a second capacitor respectively, the other end of the second resistor is connected with the positive input end of an amplifier and the other end of the first capacitor respectively, the negative input end of the amplifier is connected with the other end of the fourth resistor and one end of a third resistor respectively, the power supply end of the amplifier is connected with the +5V power supply, the grounding end of the amplifier is connected with the ground, and the output end of the amplifier is connected with the other end of the second capacitor and the other.
The loudspeaker corresponds to the position of the sound through hole on the surface of the shell, so that sound can be transmitted more clearly.
The microprocessor is ARM10, the wireless transmitting module is a ZigBee wireless transmitting module, and the model of the loudspeaker is TSB 28E-8A.
The microphone acquires a voice signal, the audio signal is amplified by the preamplification circuit, and then the amplified audio signal is output to the low-pass filter circuit; the low-pass filter circuit is used for filtering high-frequency interference, the audio signal after passing through the low-pass filter circuit is input to the analog-to-digital converter for analog-to-digital conversion and then output to the controller, the controller outputs the data after analog-to-digital conversion to the wireless transmitting module, the wireless receiving module on the unmanned aerial vehicle receives the audio signal and forwards the audio signal to the microprocessor, the microprocessor forwards the audio signal to the digital-to-analog converter, the audio signal is converted into an analog audio signal, and the analog audio signal is driven by the audio power amplifying circuit and then is sent to the; in the communication process of the voice audio signal, data compression is not carried out, so that the data transmission quantity is increased, and the data compression distortion is reduced.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all should be considered as belonging to the protection scope of the invention.
Claims (5)
1. A wireless broadcasting system used on an unmanned aerial vehicle is characterized by comprising an audio acquisition and processing device and a sound amplifying device, wherein the audio acquisition and processing device comprises a microphone, a pre-amplification circuit, a low-pass filter circuit, an analog-to-digital converter, a controller and a wireless transmitting module; the bottom surface of the shell is provided with a solar cell panel for supplying power to the sound amplifying device; wherein,
the microphone, the pre-amplification circuit, the low-pass filter circuit, the analog-to-digital converter, the controller, the wireless transmitting module, the wireless receiving module, the microprocessor, the digital-to-analog converter, the audio power amplification circuit and the loudspeaker are sequentially connected;
the low-pass filter circuit comprises an NPN triode, first to fifth resistors, a first capacitor, a second capacitor and an amplifier; the collector of the NPN triode is connected with a +5V power supply, the emitter of the NPN triode is connected with one end of a first resistor, one end of a first capacitor and one end of a fifth resistor respectively, the other end of the fifth resistor is connected with one end of a fourth resistor and the ground respectively, the other end of the first resistor is connected with one end of a second resistor and one end of a second capacitor respectively, the other end of the second resistor is connected with the positive input end of an amplifier and the other end of the first capacitor respectively, the negative input end of the amplifier is connected with the other end of the fourth resistor and one end of a third resistor respectively, the power supply end of the amplifier is connected with the +5V power supply, the grounding end of the amplifier is connected with the ground, and the output end of the amplifier is connected with the other end of the second capacitor and the other.
2. The wireless broadcasting system for unmanned aerial vehicle of claim 1, wherein the speaker corresponds to the position of the sound hole on the surface of the housing.
3. The wireless broadcasting system of claim 1, wherein the microprocessor is an ARM 10.
4. The wireless broadcasting system for unmanned aerial vehicle of claim 1, wherein the wireless transmitting module is a ZigBee wireless transmitting module.
5. The wireless broadcasting system for unmanned aerial vehicles of claim 1, wherein the model of the speaker is TSB 28E-8A.
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| CN201710740036.7A CN107565987A (en) | 2017-08-23 | 2017-08-23 | A kind of wireless broadcast system on unmanned plane |
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| CN201710740036.7A CN107565987A (en) | 2017-08-23 | 2017-08-23 | A kind of wireless broadcast system on unmanned plane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112309093A (en) * | 2020-11-23 | 2021-02-02 | 北京航宇军科机电设备有限公司 | Air broadcast alarm system |
| CN113795425A (en) * | 2019-06-05 | 2021-12-14 | 索尼集团公司 | Information processing apparatus, information processing method, and program |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406886A (en) * | 2015-12-14 | 2016-03-16 | 恩平市邦华电子有限公司 | Digital signal wireless transmission equipment |
| CN106231184A (en) * | 2016-08-01 | 2016-12-14 | 苏州倍声声学技术有限公司 | A kind of unmanned plane phonetic warning system |
| CN206237414U (en) * | 2016-10-21 | 2017-06-09 | 成都时代星光科技有限公司 | Voice transmission device, pronunciation receiver and unmanned plane voice broadcast service system |
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- 2017-08-23 CN CN201710740036.7A patent/CN107565987A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105406886A (en) * | 2015-12-14 | 2016-03-16 | 恩平市邦华电子有限公司 | Digital signal wireless transmission equipment |
| CN106231184A (en) * | 2016-08-01 | 2016-12-14 | 苏州倍声声学技术有限公司 | A kind of unmanned plane phonetic warning system |
| CN206237414U (en) * | 2016-10-21 | 2017-06-09 | 成都时代星光科技有限公司 | Voice transmission device, pronunciation receiver and unmanned plane voice broadcast service system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113795425A (en) * | 2019-06-05 | 2021-12-14 | 索尼集团公司 | Information processing apparatus, information processing method, and program |
| CN112309093A (en) * | 2020-11-23 | 2021-02-02 | 北京航宇军科机电设备有限公司 | Air broadcast alarm system |
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