CN110035373A - A kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification - Google Patents
A kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification Download PDFInfo
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- CN110035373A CN110035373A CN201910336911.4A CN201910336911A CN110035373A CN 110035373 A CN110035373 A CN 110035373A CN 201910336911 A CN201910336911 A CN 201910336911A CN 110035373 A CN110035373 A CN 110035373A
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- 230000003321 amplification Effects 0.000 title claims abstract description 56
- 238000003199 nucleic acid amplification method Methods 0.000 title claims abstract description 56
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000008520 organization Effects 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 5
- 235000005121 Sorbus torminalis Nutrition 0.000 claims description 3
- 244000152100 Sorbus torminalis Species 0.000 claims description 3
- 230000005236 sound signal Effects 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 9
- 239000012141 concentrate Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 102220110933 rs151253274 Human genes 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R27/00—Public address systems
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification, including bottom plate, the two sides of the bottom of the bottom plate are fixedly connected to pedestal, clump weight is provided between two pedestals, shell is fixedly connected at the top of the bottom plate, the intracavity bottom of the shell is equipped with level-one amplification chip, second level amplification chip is installed above the level-one amplification chip, the two sides inner wall of the shell is mounted on circuit board, the circuit board runs through the side wall of shell and extends to outside shell, and antenna is electrically connected on the circuit board, signal transmssion line is electrically connected between the level-one amplification chip and two pieces of circuit boards, and several conducting wires are electrically connected between the level-one amplification chip and second level amplification chip, public address hood is fixedly connected at the top of the shell, it is provided in the public address hood Broadcasting organization.
Description
Technical field
The present invention relates to broadcasting equipment technical field, specially a kind of wireless overlength distance audio of energy secondary modulation amplification
Broadcasting equipment.
Background technique
Wireless audio frequency transmitter is that one kind can be with the acoustic frequency transmission apparatus of wireless real-time transmission audio signal, it may be implemented far
The wireless audio frequency transmission function function of distance, is usually applied in broadcasting equipment.But existing audio broadcasting equipment is designed due to structure
The reason of, limited to the amplification of audio signal, this makes the propagation distance of sound be unable to satisfy higher demand, therefore
Urgent need improves existing wireless audio broadcasting equipment.
Summary of the invention
Present invention solves the technical problem that being to overcome the wireless audio broadcast radiated of the prior art, sound is small apart from short
Defect provides a kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification.A kind of energy secondary modulation amplification
Wireless overlength distance audio broadcasting equipment there is reasonable in design, the features such as propagation distance of audio broadcasting is wide, and sound is big.
To achieve the above object, the invention provides the following technical scheme: a kind of wireless super long distance of energy secondary modulation amplification
From audio broadcasting equipment, including bottom plate, the two sides of the bottom of the bottom plate are fixedly connected to pedestal, set between two pedestals
It is equipped with clump weight, shell is fixedly connected at the top of the bottom plate, the intracavity bottom of the shell is equipped with level-one amplification chip,
Second level amplification chip is installed, the two sides inner wall of the shell is mounted on circuit board, institute above the level-one amplification chip
Circuit board is stated through the side wall of shell and is extended to outside shell, and is electrically connected with antenna on the circuit board, the level-one is put
Signal transmssion line, and the level-one amplification chip and second level amplification chip are electrically connected between large chip and two pieces of circuit boards
Between be electrically connected with several conducting wires, public address hood is fixedly connected at the top of the shell, is provided in the public address hood wide
Broadcast mechanism.
Preferably, the broadcasting organization includes stem, and the stem is mounted on cover top portion, and two sides are provided with magnetic
Steel is fixedly connected with fixed block at the top of the magnet steel, vibrating diaphragm, the top of the vibrating diaphragm is equipped between two fixed blocks
It is provided with protective net, and the two sides of the bottom of the vibrating diaphragm are provided with voice coil, the voice coil is between magnet steel and stem, end
It is electrically connected between end and second level amplification chip by conducting wire.
Preferably, the pedestal is undercut shape, and bottom surface is provided with one layer of rubber sheet gasket, the surface of rubber sheet gasket
It is carved with herringbone anti-skid chequer.
Preferably, the public address hood is flared structure.
Preferably, the circuit board is T-shaped structure.
Compared with prior art, the beneficial effects of the present invention are:
Former audio signal can rationally, by level-one amplification chip and second level amplification chip be carried out two by structure of the invention design
Secondary amplification so that the sound that broadcasting organization is occurred can travel to farther distance (300~500m), and utilizes expansion
Sound cover can effectively reduce the dispersion of broadcast sounds, concentrate the direction of sound transmission more, to increase audio broadcasting sound
Loudness can then realize the function of overlength distance covering audio using the broadcasting equipment.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is second amplifying circuit figure of the invention.
Figure label: 1 bottom plate, 2 pedestals, 3 clump weights, 4 shells, 5 level-one amplification chips, 6 second level amplification chips, 7 circuits
Plate, 8 antennas, 9 signal transmssion lines, 10 conducting wires, 11 public address hoods, 12 stems, 13 magnet steel, 14 fixed blocks, 15 vibrating diaphragms, 16 protective nets,
17 voice coils.
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.
The present invention provides a kind of technical solution referring to FIG. 1-2: a kind of wireless overlength distance sound of energy secondary modulation amplification
Frequency broadcasting equipment, including bottom plate 1, the two sides of the bottom of bottom plate 1 are fixedly connected to pedestal 2, and pedestal 2 is undercut shape, bottom
Surface is provided with one layer of rubber sheet gasket, and herringbone anti-skid chequer is carved on the surface of rubber sheet gasket, it is possible to increase pedestal 2 and ground or desktop
Between frictional force, prevent from skidding, be provided with clump weight 3 between two pedestals 2, it is possible to increase the weight of the broadcasting equipment, thus
Its stability is further enhanced, the top of bottom plate 1 is fixedly connected with shell 4, and the intracavity bottom of shell 4 is equipped with level-one amplification core
Piece 5, the top of level-one amplification chip 5 are equipped with second level amplification chip 6, can by level-one amplification chip 5 and second level amplification chip 6
Secondary modulation amplification is carried out to audio signal, to improve its propagation distance, the two sides inner wall of shell 4 is mounted on circuit board 7,
Circuit board 7 is T-shaped structure, through shell 4 side wall and extend to outside shell 4, and antenna 8 is electrically connected on circuit board 7,
Signal transmssion line 9 is electrically connected between level-one amplification chip 5 and two pieces of circuit boards 7, and level-one amplification chip 5 is put with second level
Several conducting wires 10 are electrically connected between large chip 6, the top of shell 4 is fixedly connected with public address hood 11, sets in public address hood 11
It is equipped with broadcasting organization, public address hood 11 is flared structure, can reduce the dispersion of broadcast sounds, collect the direction of sound transmission more
In, to increase the loudness of audio broadcasting sound, broadcasting organization includes stem 12, and stem 12 is mounted on 4 top of shell, two sides
It is provided with magnet steel 13, the top of magnet steel 13 is fixedly connected with fixed block 14, and vibrating diaphragm 15 is equipped between two fixed blocks 14, shakes
The top of film 15 is provided with protective net 16, and protective net 16 can play the role of protection, while a part of dust can also be stopped to adhere to
Influence its normal work to internal element, the two sides of the bottom of vibrating diaphragm 15 are provided with voice coil 17, voice coil 17 be located at magnet steel 13 with
Between stem 12, it is electrically connected between end and second level amplification chip 6 by conducting wire 10.
Working principle: in the use of the present invention, the remote outer audio signal transmitted is received by antenna 8 first,
And it is transmitted to circuit board 7, then pass through signal transmssion line 9 for audio signal transmission to level-one amplification chip 5, passes through level-one
Amplification chip 5 can once amplify audio signal, then will pass through the audio signal transmission once amplified by conducting wire 10
To second level amplification chip 6, to realize the secondary amplification to audio signal, the amplification principle of audio signal can refer to Fig. 2, band logical
Filtering is made of double operational integrated circuit TL082, and TL082 has the characteristics such as high-precision, low biasing, low-power consumption, Embedded
Two amplifiers can flexibly form all kinds of amplifications and filter circuit, since electrocardiosignal frequency band is concentrated mainly on the left side 0.05~100Hz
The right side, frequency band is wider, for this purpose, separately designing the voltage-controlled active high pass of second order and low-pass filter and group using two amplifiers of TL082
Synthesizing bandpass filtering, wherein U4B, C6, C7, R24, R25 constitute high-pass filter, are the low-frequency component for not losing electrocardiosignal,
Its cutoff frequency is designed as 0.03Hz, and U6A, R28, R29, C8, C9 constitute low-pass filter, equally, for do not lose its high frequency at
Point, cutoff frequency is designed as 106Hz, and second amplifying circuit is made of U6B, R32, potentiometer VR2, it is contemplated that electrocardiosignal amplitude
About 0~4mV, and data collecting card A/D converted input signal is required in 1V or so, therefore, the times magnification of entire signal circuit
Number needs 1000 times or so, and preposition differential about 10 times or so of amplification, therefore the same level amplification factor is designed as 100 times or so, adjustable
Nodal potential device VR2 makes i.e. G=1+VR2/R32=100, and later, the audio signal by secondary amplification is transferred to by conducting wire 10
Voice coil 17, voice coil 17 generate corresponding magnetic field after receiving voice-frequency signalling current, the stem in this magnetic field and broadcasting organization
12 and magnet steel 13 caused by form interaction force between magnetic field, this interaction force makes voice coil 17 with tone currents
Vibration is got up, and since vibrating diaphragm 15 and voice coil 17 connect together, vibrating diaphragm 15 can also shake with the vibration of voice coil 17
It is dynamic, sound identical with former audio signal waveform is just produced when vibrating diaphragm 15 vibrates, finally in the effect of public address hood 11
The direction of sound transmission can be made more to concentrate down, thus by sound transmission at a distance.
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 (5)
1. a kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification, including bottom plate (1), it is characterised in that: institute
The two sides of the bottom for stating bottom plate (1) are fixedly connected to pedestal (2), are provided with clump weight (3), institute between two pedestals (2)
It states and is fixedly connected at the top of bottom plate (1) shell (4), the intracavity bottom of the shell (4) is equipped with level-one amplification chip (5),
It is equipped with second level amplification chip (6) above the level-one amplification chip (5), the two sides inner wall of the shell (4) is mounted on
Circuit board (7), the circuit board (7) runs through the side wall of shell (4) and extends to shell (4) outside, and the circuit board (7) powers on
Property is connected with antenna (8), is electrically connected with signal transmssion line between the level-one amplification chip (5) and two pieces of circuit boards (7)
(9), several conducting wires (10) and between the level-one amplification chip (5) and second level amplification chip (6) are electrically connected with, it is described outer
It is fixedly connected at the top of shell (4) public address hood (11), is provided with broadcasting organization in the public address hood (11).
2. a kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification according to claim 1, feature
Be: the broadcasting organization includes stem (12), and the stem (12) is mounted at the top of shell (4), and two sides are provided with magnetic
Steel (13) is fixedly connected with fixed block (14) at the top of the magnet steel (13), is equipped with vibration between two fixed blocks (14)
Film (15) is provided with protective net (16) above the vibrating diaphragm (15), and the two sides of the bottom of the vibrating diaphragm (15) are provided with sound
It encloses (17), the voice coil (17) is located between magnet steel (13) and stem (12), passes through between end and second level amplification chip (6)
Conducting wire (10) is electrically connected.
3. a kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification according to claim 1, feature
Be: the pedestal (2) is undercut shape, and bottom surface is provided with one layer of rubber sheet gasket, and people is carved on the surface of rubber sheet gasket
Font anti-skid chequer.
4. a kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification according to claim 1, feature
Be: the public address hood (11) is flared structure.
5. a kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification according to claim 1, feature
Be: the circuit board (7) is T-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910336911.4A CN110035373A (en) | 2019-04-25 | 2019-04-25 | A kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910336911.4A CN110035373A (en) | 2019-04-25 | 2019-04-25 | A kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification |
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| Publication Number | Publication Date |
|---|---|
| CN110035373A true CN110035373A (en) | 2019-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910336911.4A Pending CN110035373A (en) | 2019-04-25 | 2019-04-25 | A kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification |
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| CN (1) | CN110035373A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2679955Y (en) * | 2004-01-07 | 2005-02-16 | 李太平 | Integrated tweeter for radio broadcasting |
| CN201328122Y (en) * | 2008-12-26 | 2009-10-14 | 深圳世强电讯有限公司 | FM radio receiving circuit for portable product |
| CN201928238U (en) * | 2010-07-23 | 2011-08-10 | 天津赛思科技发展有限公司 | Multifunctional network audio frequency power amplifier device for railway passenger transport broadcasting system |
| CN205105396U (en) * | 2015-10-29 | 2016-03-23 | 嘉兴市上村电子有限公司 | Broadcasting speaker |
| CN205829642U (en) * | 2016-07-05 | 2016-12-21 | 广东工业大学 | A kind of Campus Broadcasting System |
| CN207117638U (en) * | 2017-06-27 | 2018-03-16 | 江西国宣广电科技有限公司 | A kind of novel emergency broadcasting equipment |
| CN208143490U (en) * | 2018-04-19 | 2018-11-23 | 广州铁路科开制造有限公司 | Wireless audio broadcasting equipment |
| CN209497602U (en) * | 2019-04-25 | 2019-10-15 | 湖南智领通信科技有限公司 | A kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification |
-
2019
- 2019-04-25 CN CN201910336911.4A patent/CN110035373A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2679955Y (en) * | 2004-01-07 | 2005-02-16 | 李太平 | Integrated tweeter for radio broadcasting |
| CN201328122Y (en) * | 2008-12-26 | 2009-10-14 | 深圳世强电讯有限公司 | FM radio receiving circuit for portable product |
| CN201928238U (en) * | 2010-07-23 | 2011-08-10 | 天津赛思科技发展有限公司 | Multifunctional network audio frequency power amplifier device for railway passenger transport broadcasting system |
| CN205105396U (en) * | 2015-10-29 | 2016-03-23 | 嘉兴市上村电子有限公司 | Broadcasting speaker |
| CN205829642U (en) * | 2016-07-05 | 2016-12-21 | 广东工业大学 | A kind of Campus Broadcasting System |
| CN207117638U (en) * | 2017-06-27 | 2018-03-16 | 江西国宣广电科技有限公司 | A kind of novel emergency broadcasting equipment |
| CN208143490U (en) * | 2018-04-19 | 2018-11-23 | 广州铁路科开制造有限公司 | Wireless audio broadcasting equipment |
| CN209497602U (en) * | 2019-04-25 | 2019-10-15 | 湖南智领通信科技有限公司 | A kind of wireless overlength distance audio broadcasting equipment of energy secondary modulation amplification |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190719 |
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| WD01 | Invention patent application deemed withdrawn after publication |