CN103152153B - Sound transmission system - Google Patents
Sound transmission system Download PDFInfo
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- CN103152153B CN103152153B CN201310092852.3A CN201310092852A CN103152153B CN 103152153 B CN103152153 B CN 103152153B CN 201310092852 A CN201310092852 A CN 201310092852A CN 103152153 B CN103152153 B CN 103152153B
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- signal
- telecommunication
- light source
- optical signal
- carrier signal
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 36
- 230000003287 optical effect Effects 0.000 claims abstract description 60
- 230000005236 sound signal Effects 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 16
- 230000001010 compromised effect Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The invention discloses a kind of sound transmission system, including: transducer, for acoustical signal is converted into the signal of telecommunication；Light source, is connected with transducer, for sending the optical signal corresponding with the signal of telecommunication under the triggering of the signal of telecommunication；Receptor, is used for receiving optical signal；And processor, it is connected with receptor, is used for converting optical signals into acoustical signal.By the present invention, solve the problem that wireless simultaneous interpretation system security is relatively low, i.e. ensure that the safety of information.
Description
Technical field
The present invention relates to photoelectric field, in particular to a kind of sound transmission system.
Background technology
Wireless simultaneous interpretation of the prior art is similar to broadcasting station and receives with wireless transmission, the relatively low frequency of general employing and longer wave band are avoided the equipment such as broadcasting station, transmitter receiver and are commonly used wave band, this transmission means does not possess confidentiality, any people outside the venue can use same receiver uppick conference content, system is also easily subject to electromagnetic interference.
For the problem that wireless simultaneous interpretation system security in prior art is relatively low, effective solution is the most not yet proposed.
Summary of the invention
Present invention is primarily targeted at a kind of sound transmission system of offer, to solve the problem that in prior art, wireless simultaneous interpretation system security is relatively low.
To achieve these goals, according to the present invention, it is provided that a kind of sound transmission system, including: transducer, for acoustical signal is converted into the signal of telecommunication；Light source, is connected with transducer, for sending the optical signal corresponding with the signal of telecommunication under the triggering of the signal of telecommunication；Receptor, is used for receiving optical signal；And processor, it is connected with receptor, is used for converting optical signals into acoustical signal.
Further, transducer includes multiplexer, for multiple acoustical signal corresponding conversion are become multiple signal of telecommunication, wherein, N transducer in multiplexer is for being converted into the N signal of telecommunication by N acoustical signal, and light source is all connected with multiplexer, for sending combination optical signal under the common triggering of multiple signals of telecommunication, receptor is additionally operable to receive combination optical signal, and processor is additionally operable to be converted into combination optical signal target sound signal.
Further, sound transmission system also includes: multichannel carrier signal generator, and multichannel carrier signal generator is corresponding with multiplexer to be connected, and is used for generating multichannel carrier signal, wherein, carries the N signal of telecommunication in the N carrier signal of multichannel carrier signal；And synthesizer, all it is connected with multichannel carrier signal generator, for being composite signal by multichannel carrier signal syntheses, light source is connected with synthesizer, for sending combination optical signal under the triggering of composite signal.
Further, the quantity of light source is multiple, and multiple light sources are all connected with synthesizer, is used under the triggering of composite signal send combination optical signal.
Further, P carrier signal is different with Q carrier signal, and wherein, P carrier signal and Q carrier signal are any two-way carrier signal in multichannel carrier signal.
Further, receptor includes: optical-electrical converter, and for combination optical signal is converted into multichannel carrier signal, processor includes: band filter, for obtaining the target signal of telecommunication from multichannel carrier signal by default band passband rate；Audio output apparatus, is connected with band filter, for the target signal of telecommunication is converted into target sound signal, and exports target sound signal.
Further, sound transmission system also includes: controller, is connected with light source, for controlling the flicker of light source to send optical signal.
Further, controller is additionally operable to control the flicker of light source to send optical signal by pulse width modulation.
Further, transducer includes: microphone, is used for converting voice signals into analogue signal；And analog-digital converter, it being connected with microphone, be used for converting analog signals into digital signal, light source is additionally operable to send the optical signal corresponding with digital signal under the control of the controller.
Further, controller be additionally operable to control light source scintillation time effective fluorescent lifetime to send optical signal.
Further, when effective fluorescent lifetime of light source is 95%, the optical signal of transmission is 0；And when effective fluorescent lifetime of LED is 97.5%, the optical signal of transmission is 1.
By the present invention, owing to using optical signal transmission acoustical signal, as long as therefore ensureing that the meeting-place of simultaneous interpretation is light tight, such as use every light glass or curtain, getting final product guarantee information will not be compromised, therefore solves the problem that wireless simultaneous interpretation system security is relatively low, i.e. ensure that the safety of information.
Accompanying drawing explanation
The accompanying drawing of the part constituting the application is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings: represent light source with LED.
Fig. 1 is the structured flowchart of sound transmission system according to embodiments of the present invention；
Fig. 2 is the schematic diagram of sound transmitting terminal in sound transmission system according to embodiments of the present invention；
Fig. 3 is the schematic diagram of sound transmitting terminal in sound transmission system according to the preferred embodiment of the invention；
Fig. 4 is the schematic diagram of LED of the prior art；
Fig. 5 is the schematic diagram of LED according to embodiments of the present invention；
Fig. 6 a and 6b is that LED encodes schematic diagram according to the preferred embodiment of the invention；
Fig. 7 is the schematic diagram receiving voice signal according to embodiments of the present invention；
Fig. 8 is the operating diagram of Fig. 7 median filter；
Fig. 9 is the layout in simultaneous interpretation meeting-place；And
Figure 10 is the schematic diagram in simultaneous interpretation meeting-place.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Embodiments providing a kind of sound transmission system, this system can be applied in the meeting-place of simultaneous interpretation, and below as a example by the scene of simultaneous interpretation, the sound transmission system being provided the embodiment of the present invention is introduced.
Fig. 1 is the structured flowchart of sound transmission system according to embodiments of the present invention.
As it is shown in figure 1, this sound transmission system includes transducer 11, LED 12, receptor 13 and processor 14.
Transducer 11 is for being converted into the signal of telecommunication by acoustical signal.
Transducer 11 can be arranged on the place of translator's work (i.e., transliteration platform), when translator hears the speech of spokesman, state the speech content of spokesman with other languages, acoustical signal, after receiving the acoustical signal that translator sends, is converted into the signal of telecommunication by transducer 11.
LED 12 is connected with transducer 11, for sending the optical signal corresponding with the signal of telecommunication under the triggering of the signal of telecommunication.
Generally speaking, LED 12 is to electrically connect with transducer 11, it is also possible to being connected by light or other connect, LED 12 can be arranged on the roof in the meeting-place carrying out simultaneous interpretation, to ensure bigger range of exposures, thus ensure region the biggest in meeting-place to be transmitted optical signal.
Receptor 13 is used for receiving optical signal.
Receptor 13 can hang on the body of the participant participating in simultaneous interpretation, it is also possible to is arranged on around participant, such as on tables and chairs, as long as the optical signal that LED 12 sends can be received.
Processor 14 is connected with receptor 13, is used for converting optical signals into acoustical signal.
Processor 14 can first process to obtain the signal of telecommunication corresponding to optical signals, then this signal of telecommunication is being converted into acoustical signal.
In the present embodiment, owing to using optical signal transmission acoustical signal, as long as therefore ensureing that the meeting-place of simultaneous interpretation is light tight, such as use every light glass or curtain, getting final product guarantee information will not be compromised, therefore solve the problem that wireless simultaneous interpretation system security is relatively low, i.e. ensure that the safety of information.
Fig. 2 is the schematic diagram of sound transmitting terminal in sound transmission system according to embodiments of the present invention, as shown in Figure 2, speaker is made a speech by speaker's microphone, translator in transliteration platform carries out simultaneous interpretation, after transducer receives the voice signal of translator, first convert voice signals into analogue signal, then convert analog signals into digital signal by analog digital conversion, trigger LED by this digital signal to drive, LED can be made to send the optical signal of correspondence.
Fig. 3 is the schematic diagram of sound transmitting terminal in sound transmission system according to the preferred embodiment of the invention.This embodiment can be as the preferred implementation of above-described embodiment.
As it is shown on figure 3, in this sound transmission system, transducer includes multiplexer and multichannel carrier signal generator, each transducer all including, microphone and analog-digital converter, microphone are used for converting voice signals into analogue signal；Analog-digital converter is connected with microphone, is used for converting analog signals into digital signal.The sound transmission system of the embodiment of the present invention is described as a example by a road transducer and a road-load wave generator: audibly propagated by microphone and speaker if speaker, after translator's translation, pass through transducer, acoustical signal is converted into analog electrical signal, after carrying out analog-digital converter by analog-digital converter again, be converted to digital signal.This digital signal is superimposed by logic circuit (diagrammatically illustrating logic circuit in Fig. 3 is AND circuit) with corresponding carrier signal, forms a road carrier signal.
In embodiments of the present invention, multiplexer and multichannel carrier signal generator work simultaneously, produce multichannel carrier signal, and multichannel carrier signal acts on LED light source (i.e. after being synthesized by synthesizer, LED) driver, with by LED driver trigger LED light source to emission combination optical signal.Wherein, the quantity of LED can be multiple, and the LED driver of each LED is all connected with synthesizer, it is achieved multiple LED light sources send combination optical signal respectively under respective LED drives.
Such as spokesman makes a speech with Chinese, Chinese is translated into English by the translator at the first transducer present position, Chinese is translated into German by the translator at the second transducer present position, it is so the first acoustical signal with the acoustical signal of the translator at the first transducer present position, this first acoustical signal is carried by first carrier signal, with the acoustical signal of the translator at the second transducer present position as second sound signal, this second sound signal is carried by first carrier signal, realize the transmission of sound signals of different translators being gone out by the different signals of telecommunication.According to on-the-spot needs, the concrete number of multiplexer is specifically set.
In order to avoid in transmission of sound signals, the acoustical signal existence of different language interferes, different carrier signal generator can be set and produce the carrier signal of different frequency, i.e., P carrier signal and Q carrier signal in multichannel carrier signal produced by multichannel carrier signal generator differ, wherein, P carrier signal and Q carrier signal are any two-way carrier signal in multichannel carrier signal.
In order to ensure that the optical signal that LED sends can transmit acoustical signal exactly, also including controller in simultaneous interpretation system, controller is connected with LED, is used for controlling LED and flashes to send optical signal according to carrier signal.In the present embodiment, both can control all of LED by a controller, it is also possible to the controller of correspondence is set to each LED.Specifically, controller can be also used for controlling LED by pulse width modulation and drives, and then controls the flicker of LED, thus reaches to send the purpose of optical signal.
Fig. 4 is the schematic diagram of LED of the prior art, Fig. 5 is the schematic diagram of LED according to embodiments of the present invention, compared to prior art, the present embodiment with single-chip microcomputer (MCU) as controller, the flicker of LED is controlled to send optical signal by pulse width modulation (PWM), instead of brightness adjustment control device of the prior art, thus reach to send the purpose of certain optical signals.
Specifically, controller can be also used for effective fluorescent lifetime when control LED flashes to send optical signal.Fig. 6 a and 6b is that LED encodes schematic diagram according to the preferred embodiment of the invention, and as shown in figure 6 a and 6b, when effective fluorescent lifetime of LED is 95% (25/ (25+475)=95%), the optical signal of transmission is 0；When effective fluorescent lifetime of LED is 97.5% (25/ (25+975)=97.5%), the optical signal of transmission is 1.In the present embodiment 95% and 97.5% is only preferred time ratio, and the fluorescent lifetime of other ratios can be used for transmitting optical signal.
Fig. 7 is the schematic diagram receiving voice signal according to embodiments of the present invention, as shown in Figure 7, after LED etc. outwards transmit optical signal (combination optical signal) by optical channel, receptor is correspondingly received optical signal (combination optical signal), receptor has optical-electrical converter, for the combination optical signal received is converted into multichannel carrier signal, each road carrier signal is all amplified by preamplifier, from the multichannel carrier signal after amplification, target carrier signal is got according to different default band passband rates by band filter, i.e. be equivalent to get the target signal of telecommunication, speech simulation signal is obtained again by amplifying circuit and digital to analog converter, play back finally by audio output apparatus.Owing to, in multichannel carrier signal, carrying the signal of different language respectively, so, can obtain, by the band passband rate arranging band filter, the multichannel carrier signal transmitted, the most correspondingly process the sound obtaining target language.
Wherein, the combination of the preamplifier shown in Fig. 7, band filter, amplifying circuit and digital to analog converter is equivalent to the processor 14 in Fig. 1, and audio output apparatus can be earphone, it is also possible to be speaker.
Diagrammatically illustrating the operating diagram of band filter in Fig. 7 in Fig. 8, as shown in Figure 8, diagrammatically illustrate five kinds of voice signals of f1 to f5, wherein, different voice signals loads after forming different carrier waves, is sent by optical signal.After optical receiver receives the carrier signal of carrying voice signal, target carrier signal is gone out by band-pass filter, pass sequentially through again amplifying circuit amplify, digital to analog converter be converted to analoging sound signal after, output export to audio output apparatus, obtain the acoustical signal wanted.
Fig. 9 and Figure 10 is layout and the schematic diagram in simultaneous interpretation meeting-place respectively, as it can be seen, by LED, reached to transmit the purpose of signal.
As can be seen from the above description, the embodiment of the present invention improves safety during simultaneous interpretation, also simplify the wiring in meeting-place.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although showing logical order in flow charts, but in some cases, can be to be different from the step shown or described by order execution herein.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (7)
1. a sound transmission system, it is characterised in that including:
Transducer, for being converted into the signal of telecommunication by acoustical signal；
Light source, is connected with described transducer, for sending the optical signal corresponding with the described signal of telecommunication under the triggering of the described signal of telecommunication；
Wherein, the quantity of described acoustical signal is multiple, and described transducer includes multiplexer, and for multiple acoustical signal corresponding conversion become multiple signal of telecommunication, wherein, the N transducer in described multiplexer is used for being converted into N acoustical signal the N signal of telecommunication,
Described light source is all connected with described multiplexer, and for sending combination optical signal under the common triggering of the plurality of signal of telecommunication, receptor is additionally operable to receive described combination optical signal, and processor is additionally operable to described combination optical signal is converted into target sound signal；
Controller, is connected with described light source, and the effective fluorescent lifetime in time controlling described light source scintillation is to send described optical signal；
Receptor, is used for receiving described optical signal；And
Processor, is connected with described receptor, for described optical signal is converted into described acoustical signal,
Wherein, described system also includes:
Multichannel carrier signal generator, described multichannel carrier signal generator is corresponding with described multiplexer to be connected, and is used for generating multichannel carrier signal, wherein, carries the described N signal of telecommunication in the N carrier signal of described multichannel carrier signal；And
Synthesizer, is all connected with described multichannel carrier signal generator, and being used for described multichannel carrier signal syntheses is composite signal,
Wherein, described light source is connected with described synthesizer, for sending described combination optical signal under the triggering of described composite signal.
Sound transmission system the most according to claim 1, it is characterised in that the quantity of described light source is multiple, and multiple light sources are all connected with described synthesizer, is used to send described combination optical signal under the triggering of described composite signal.
Sound transmission system the most according to claim 1, it is characterised in that P carrier signal is different with Q carrier signal, wherein, described P carrier signal and described Q carrier signal are any two-way carrier signal in described multichannel carrier signal.
Sound transmission system the most according to any one of claim 1 to 3, it is characterised in that
Described receptor includes: optical-electrical converter, for described combination optical signal being converted into described multichannel carrier signal,
Described processor includes:
Band filter, for obtaining the target signal of telecommunication by default band passband rate from described multichannel carrier signal；
Audio output apparatus, is connected with described band filter, for the described target signal of telecommunication is converted into described target sound signal, and exports described target sound signal.
Sound transmission system the most according to claim 1, it is characterised in that
Described controller is additionally operable to control the flicker of described light source to send described optical signal by pulse width modulation.
Sound transmission system the most according to claim 1, it is characterised in that
Described transducer includes:
Microphone, is used for converting voice signals into analogue signal；And
Analog-digital converter, is connected with described microphone, for described analogue signal is converted into digital signal,
Described light source is additionally operable under the control of described controller send the optical signal corresponding with described digital signal.
Sound transmission system the most according to claim 1, it is characterised in that
When effective fluorescent lifetime of described light source is 95%, the optical signal of transmission is 0；And
When effective fluorescent lifetime of described light source is 97.5%, the optical signal of transmission is 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310092852.3A CN103152153B (en) | 2013-03-21 | 2013-03-21 | Sound transmission system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310092852.3A CN103152153B (en) | 2013-03-21 | 2013-03-21 | Sound transmission system |
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| CN103152153A CN103152153A (en) | 2013-06-12 |
| CN103152153B true CN103152153B (en) | 2016-08-03 |
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| CN201310092852.3A Expired - Fee Related CN103152153B (en) | 2013-03-21 | 2013-03-21 | Sound transmission system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105429705A (en) * | 2015-12-11 | 2016-03-23 | 上海斐讯数据通信技术有限公司 | Visible light based voice transmission device and voice transmission method |
| CN107813761A (en) * | 2017-09-27 | 2018-03-20 | 上海与德科技有限公司 | A kind of vehicle communication method, device, equipment and medium |
| CN108599844B (en) * | 2018-01-25 | 2021-03-26 | 南昌大学 | Simultaneous interpretation device based on visible light communication technology and working method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101039150A (en) * | 2006-12-23 | 2007-09-19 | 邓志华 | Vehicle audio optical fiber transmission device |
| CN101206017A (en) * | 2007-12-12 | 2008-06-25 | 徐松人 | Method for recognition of lamplight for watercraft identification and watercraft personal identification lamp |
| CN101286783A (en) * | 2008-05-21 | 2008-10-15 | 京信通信系统（中国）有限公司 | Digital RF remote system with movable working passband and method to move the working passband |
| CN102307063A (en) * | 2011-09-23 | 2012-01-04 | 天津工业大学 | Voice information notification system based on LED visible light |
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2013
- 2013-03-21 CN CN201310092852.3A patent/CN103152153B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101039150A (en) * | 2006-12-23 | 2007-09-19 | 邓志华 | Vehicle audio optical fiber transmission device |
| CN101206017A (en) * | 2007-12-12 | 2008-06-25 | 徐松人 | Method for recognition of lamplight for watercraft identification and watercraft personal identification lamp |
| CN101286783A (en) * | 2008-05-21 | 2008-10-15 | 京信通信系统（中国）有限公司 | Digital RF remote system with movable working passband and method to move the working passband |
| CN102307063A (en) * | 2011-09-23 | 2012-01-04 | 天津工业大学 | Voice information notification system based on LED visible light |
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Inventor after: Guo Cheng Inventor after: Hu Hong Inventor after: Tang Qin Inventor after: Shi Lei Inventor after: Zhang Guoqi Inventor before: Guo Cheng Inventor before: Hu Hong Inventor before: Tang Qin Inventor before: Shi Lei |
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Free format text: CORRECT: INVENTOR; FROM: GUO CHENG HU HONG TANG QIN SHI LEI TO: GUO CHENG HU HONG TANG QIN SHI LEI ZHANG GUOQI |
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Effective date of registration: 20160718 Address after: Korea 101300 Beijing city Shunyi District town culture camp north of the village (two Airport Road No. 1) Patentee after: BEIJING GUOLIAN WANZHONG SEMICONDUCTOR TECHNOLOGY CO.,LTD. Address before: 100080 B building, 2 digital building, Zhongguancun South Road, Beijing, Haidian District 702, China Patentee before: Beijing Semiconductor Lighting Technology Promotion Center |
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