CN102098111A - Underwater voice communication system through light-emitting diode (LED) light source and diving helmet - Google Patents
Underwater voice communication system through light-emitting diode (LED) light source and diving helmet Download PDFInfo
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- CN102098111A CN102098111A CN2011100380488A CN201110038048A CN102098111A CN 102098111 A CN102098111 A CN 102098111A CN 2011100380488 A CN2011100380488 A CN 2011100380488A CN 201110038048 A CN201110038048 A CN 201110038048A CN 102098111 A CN102098111 A CN 102098111A
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Abstract
本发明公开了一种LED光源水下语音通信的系统与潜水头盔。本发明采用LED光源的LED光信号作为潜水员在水下进行语音通信的载体，相比于目前主流的采用声学技术的水下语音通信技术，这种采用光学技术的水下语音通信方式具有带宽高、传输延时小、传输速率高等优点。
The invention discloses an LED light source underwater voice communication system and a diving helmet. The present invention uses the LED light signal of the LED light source as the carrier for divers to carry out voice communication underwater. Compared with the current mainstream underwater voice communication technology using acoustic technology, this underwater voice communication method using optical technology has a high bandwidth. , small transmission delay, high transmission rate and other advantages.
Description
Technical field
The present invention relates to the optical communication technical field, relate in particular to a kind of system and diver's helmet of led light source underwater voice communication.
Background technology
For colony's operation under water, the information communication between the diver is task guarantee efficient, that accurately carry out, also is the prerequisite that team's collaborative work is carried out smoothly.Because the particularity of underwater environment can only rely on gesture to transmit some simple message between the diver at present, seriously restricting development extensive, the high accuracy underwater operation.
At present, underwater wireless communication is widely used to be the acoustic communication technology, and the acoustic communication technology has that communication distance is far away, the reliability advantages of higher, but also has shortcomings such as the underwater acoustic channel transmission delay is long, transmission rate is low, power consumption height simultaneously.
Existing studies show that also exists one to be similar to the optical transmission window that exists in the atmosphere in the ocean, in the decay of light wave in seawater of this window than the little a plurality of orders of magnitude of radio wave.LED is because advantages such as its energy-saving and environmental protection, brightness height and life-span length are the perfect light sources of diver's searchlighting head lamp.And LED is different from another important feature of other lighting source is that it can be by High Speed Modulation (MHz).
In realizing process of the present invention, the inventor recognizes that there is following technological deficiency in prior art: utilize acoustic technique to carry out that the transmission delay of underwater voice communication is long, transmission rate is low.
Summary of the invention
(1) technical problem that will solve
For addressing the aforementioned drawbacks, the invention provides a kind of system and diver's helmet of led light source underwater voice communication, realize underwater voice communication in order to method, thereby reduce transmission delay with optical communication technique, improve transmission rate.
(2) technical scheme
According to an aspect of the present invention, provide a kind of led light source underwater voice communication system.This system is used for diver's underwater operation, comprise: transmitting terminal assembly and receiving terminal assembly, wherein, the transmitting terminal assembly, be used to gather first diver's sound, this first diver is corresponding to the first underwater voice communication system that comprises this transmitting terminal assembly, and first diver's that gathered sound is converted to the signal of telecommunication, utilize this signal of telecommunication that the LED light signal of led light source is modulated, and send the LED light signal after the modulation; The receiving terminal assembly, be used to receive the LED light signal after the modulation that the second underwater voice communication system transmitting terminal assembly sends, this LED light signal is converted to the signal of telecommunication, and from this signal of telecommunication, demodulates second diver's corresponding sound with this second underwater voice communication system.
Preferably, in the led light source underwater voice communication of the present invention system, led light source underwater voice communication system is arranged at diver's helmet, and led light source is the led array illumination head lamp of diver's helmet.The LED light signal is a blue green light in the 450-550 nano waveband.The modulation rate of LED light signal is 10kHz-20MHz.
Preferably, in the led light source underwater voice communication of the present invention system, the transmitting terminal assembly comprises: microphone, dispensing device and led light source, wherein, and microphone, the voice signal that is used for first diver that will be gathered is converted to electric analoging signal; Dispensing device is connected with led light source with microphone, and being used for electric analoging signal is carried out code conversion is electric digital signal, utilizes this electricity digital signal modulation led light source, obtains the LED light signal, and sends this LED light signal.Preferably, system also comprises the set of lenses unit, and this set of lenses unit is positioned at the light path rear end of led light source, is made up of two single convex lens, is used to restrain the angle of divergence and/or the collimation led light source of led light source.
Preferably, in the led light source underwater voice communication of the present invention system, the receiving terminal assembly comprises: Electro-Optical Sensor Set, receiving system and earphone, wherein, Electro-Optical Sensor Set, be used to that the transmitting terminal assembly of the second underwater voice communication system that receives sends modulated after the LED light signal, and the LED light signal is converted to electric digital signal; Receiving system is connected with earphone with Electro-Optical Sensor Set, is used for demodulating electric analoging signal according to electric digital signal, and utilizes the analog electrical analog signal to drive earphone, reduces second diver's sound.Preferably, system also comprises optical concentrator, and this optical concentrator is positioned at the light path front end of Electro-Optical Sensor Set, for a slice biconvex lens, is used for converging beam, improves the intensity of the LED light signal that Electro-Optical Sensor Set received.
Preferably, in the led light source underwater voice communication of the present invention system, system also comprises the self-organized network communication protocol component.This self-organized network communication protocol component, the static channel that is used to adopt time division multiple access to insert TDMA is shared scheme, realizes many crowds body communication under water.
According to another aspect of the present invention, also provide a kind of led light source diver's helmet.This diver's helmet comprises helmet body and above-mentioned underwater voice communication system.
(3) beneficial effect
The system of led light source underwater voice communication of the present invention and diver's helmet as signal projector, can be realized the underwater optics wireless voice communication with the illumination LED on diver's helmet.Than the underwater voice communication technology of present main flow, this optical-wireless underwater voice communication mode has the bandwidth height, time-delay is little, transmission range is moderate, no electromagnetic pollution, combine advantages such as reducing cost, alleviate submarine armor load with illumination.
Description of drawings
Fig. 1 is the schematic diagram of the set of lenses unit convergence led light source angle of divergence in the embodiment of the invention led light source underwater voice communication system;
Fig. 2 is the structural representation of embodiment of the invention led light source underwater voice communication diver's helmet.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail.
In one exemplary embodiment of the present invention, provide a kind of led light source underwater voice communication system.This system comprises: transmitting terminal assembly and receiving terminal assembly.Wherein, the transmitting terminal assembly, be used to gather first diver's sound, this first diver is corresponding to the first underwater voice communication system that comprises this transmitting terminal assembly, first diver's that gathered sound is converted to the signal of telecommunication, utilize this signal of telecommunication that the LED light signal of led light source is modulated, and send the LED light signal after the modulation; The receiving terminal assembly, be used to receive the LED light signal after the modulation that the second underwater voice communication system transmitting terminal assembly sends, this LED light signal is converted to the signal of telecommunication, and from this signal of telecommunication, demodulates second diver's corresponding sound with this second underwater voice communication system.This system carries out information interaction in the time of can being used for divers' colony under water operation.
In the present embodiment, the LED light signal of employing led light source carries out voice communication under water as the diver carrier, than the underwater voice communication technology of the employing acoustic technique of present main flow, the underwater voice communication mode of this employing optical technology has bandwidth height, little, the transmission rate advantages of higher of transmission delay.
In the further embodiment of the present invention, the underwater voice communication system is arranged at diver's helmet, and the light source of LED light signal is the led array illumination head lamp of diver's helmet.In the present embodiment, realize underwater voice communication as signal projector, have following advantage: 1) combine and reduce cost 2 with illumination with the illumination LED on the diver's helmet) can alleviate submarine armor load.
In the preferred embodiment of the invention, in order to adapt to the environmental requirement that communicates in deep water, the LED light signal is a blue green light in the 450-550 nano waveband.Because of seawater has optical transmission window in the 450-550 nano waveband, therefore adopt the LED light signal of this frequency can improve distance and the quality that light signal transmits under water.
In the preferred embodiment of the invention, the modulation rate of LED light signal is 10kHz-20MHz.Optimally, the modulation rate of LED light signal is 16kHz, 64kHz, the voice modulation rate that 128kHz or 256kHz etc. are commonly used.Wherein be preferably the most general 64kHz voice modulation rate.Because of the advantage of led light source and other light sources is it can High Speed Modulation, can satisfy the requirement of carrying out voice communication fully.
In a specific embodiment of the present invention, the transmitting terminal assembly comprises: microphone, dispensing device and led light source.Wherein, microphone, the voice signal that is used for first diver that will be gathered is converted to electric analoging signal; Dispensing device is connected with led light source with microphone, and being used for electric analoging signal is carried out code conversion is electric digital signal, and utilizes this electricity digital signal modulation led light source, obtains the LED light signal, and sends this light signal.
Preferably, the light path rear end of led light source can also be provided with the set of lenses unit, is used to restrain the angle of divergence and/or the collimation led light source of led light source.This set of lenses unit can be formed with two single convex lens.Fig. 1 is the schematic diagram of the set of lenses unit convergence led light source angle of divergence in the embodiment of the invention led light source underwater voice communication system.As shown in Figure 1, behind the light scioptics group unit of comparatively dispersing by led light source emission,, thereby the accuracy and the efficient of transmission signals have been improved with approximately parallel angle outgoing.
Preferably, dispensing device comprises: sampling unit, coding unit, signal amplification unit and light source driving units, wherein: sampling unit, be connected with microphone, be used for electric analoging signal is sampled; Coding unit is connected with sampling unit, is used for sampled signal is carried out digital coding, obtains electric digital signal; Signal amplification unit is connected with coding unit, is used for that electric digital signal is carried out multistage electric current and amplifies; Light source driving units is connected with signal amplification unit, is used for the electric digital signal according to multistage electric current amplification, adopts the mode of part current-modulation, the modulation led light source.
In another specific embodiment of the present invention, the receiving terminal assembly comprises: Electro-Optical Sensor Set, receiving system and earphone.Wherein, Electro-Optical Sensor Set, be used to that the transmitting terminal assembly of the second underwater voice communication system that receives sends modulated after the LED light signal, and the LED light signal is converted to electric digital signal; Receiving system is connected with earphone with Electro-Optical Sensor Set, is used for demodulating electric analoging signal according to electric digital signal, and utilizes the analog electrical analog signal to drive earphone, reduction diver's sound.
Preferably, the light path front end of Electro-Optical Sensor Set can also be provided with optical concentrator and be used for converging beam, improves the intensity of the LED light signal that Electro-Optical Sensor Set received.This optical concentrator can be a slice biconvex lens.
Preferably, receiving system comprises: filtering amplifying unit, decoding unit and voice driven unit.Wherein, the filtering amplifying unit is connected with photodetector, is used for that electric digital signal is carried out filtering and amplifies, and extracts required voice telecommunication number; Decoding unit is connected with the filtering amplifying unit, is used for number demodulating electric analoging signal according to voice telecommunication; The voice driven unit is used for driving earphone according to electric analoging signal reduction diver's sound.
The underwater voice communication system also comprises the self-organized network communication protocol component in a specific embodiment more of the present invention.The self-organized network communication protocol component is used for by embedded network communication protocol, realizes many crowds body communication under water.The self-assembly protocol component adopts time division multiple access to insert the shared scheme of static channel of TDMA under water.The scheme particular content is: after a plurality of users constitute a communication network, at first confirm the relation of each user in this interim net by some handshake mechanisms, determined that just which diver's node is taken as interim base station.This interim base station was responsible for the whole network clock synchronization and is distributed the shared slot time of each user in the initiation of communication stage, and in life cycle, transmit the signal of receiving in this communication network always.After other user is synchronous,, send the voice signal of oneself according to the time slot of interim base station assigns; Broadcast away the data of oneself and other user's data of receiving interim base station according to the rule that pre-defines.Each diver can optionally listen to other diver's speech.When sign off, interim base station cancellation forwarding capability is returned to initial condition.
According to another aspect of the present invention, also provide a kind of led light source diver's helmet.The underwater voice communication system that this led light source diver's helmet comprises helmet body and above mentions.
Below with the preferred embodiments of the present invention the present invention is described.Additional technical feature in the following preferred embodiment all can be applicable to underwater voice communication system of the present invention and diver's helmet, and illustrates no longer separately.
Embodiment one:
Settle miniature Mike in diver's helmet, after the voice signal that collects was encoded through modulation circuit, the driving LED head lamp was realized the signal emission.Diver's helmet is installed low profile photovoltaic detection system and audible device simultaneously, catches light signal, through filtering, amplification, opto-electronic conversion and demodulation, restores voice signal, finishes signal and receives.Wherein, the signal emitting-source of system's employing is lighting LED (array) light source; Voice signal passes through collection, modulating-coding, is converted into digital signal, finishes the emission of signal by quick adjustment LED drive current.By embedded network communication protocol (as mentioned before), can realize many crowds body communication under water.
Embodiment two:
Fig. 2 is the structural representation of embodiment of the invention led light source underwater voice communication diver's helmet.As shown in Figure 2, this diver's helmet comprises following components:
Emitting module part: mainly comprise microphone, sampling unit, coding unit, light source driving units, LED head lamp and optical lens group unit etc.For light signal, adopt led array, and fit lens group unit.This its light path parameter of set of lenses unit scalable changes the bright dipping dispersion angle.
Aspect the driving of LED, adopt part current-modulation scheme.Because have a threshold value in the voltage-current characteristic of LED, completely open and close can cause nonlinear effect, makes signal distortion.Therefore, be under certain reference current, load signal.In addition, the operating current of high-power LED chip is about 1000mA, and in order to guarantee the high-speed driving ability under the big electric current, the reply input signal carries out multistage electric current and amplifies.
Receiving unit part: mainly form by optical concentrator, photodetector photodiode (Si PIN), filtering amplifying unit, decoding unit, voice driven unit.Filtering by to the signal of telecommunication extracts useful signal, suppresses noise, improves receiving sensitivity.Naked detector gain is less, improves the intensity of receiving optical signals by preposition optical concentrator.
MANET protocol section:, can realize many crowds body communication under water by embedded network communication protocol.
To sum up, the invention has the advantages that subsurface communication is combined with illumination, reduce volume, reduce cost, alleviate submarine armor load; Simultaneity factor has the bandwidth height, delay is little, can realize the voice communication of real-time fidelity; Propagation distance is moderate, and many people use not have and interfere with each other; Applicability is strong, has eliminated the influence of optical transmission window drift; No electromagnetic pollution is to characteristics such as sensitive equipment and the influences of biological nothing.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
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| CN102871255A (en) * | 2012-09-14 | 2013-01-16 | 南京邮电大学 | Visible light wireless communication module-based mine helmet |
| CN103297132A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Visible light communication method and signal output device |
| CN103297888A (en) * | 2013-04-24 | 2013-09-11 | 青岛海信电器股份有限公司 | Wireless headset device, mobile terminal device and light source device capable of being modulated |
| CN103595489A (en) * | 2013-11-08 | 2014-02-19 | 苏州桑泰海洋仪器研发有限责任公司 | Underwater talkback system based on optical fiber sensing technology |
| CN104485996A (en) * | 2015-01-05 | 2015-04-01 | 北京邮电大学 | Omnidirectional voice communication transmit-receive system design based on visible light communication and application method |
| CN105024753A (en) * | 2015-06-30 | 2015-11-04 | 中国科学院声学研究所 | Deep water visible light synchronization device |
| CN105530055A (en) * | 2016-01-26 | 2016-04-27 | 浙江大学 | Underwater wireless red light communication device and method |
| CN105790850A (en) * | 2016-04-15 | 2016-07-20 | 南京大学 | Underwater green laser communication system |
| CN108986827A (en) * | 2018-06-21 | 2018-12-11 | 大连理工大学 | A kind of speech underwater live transmission method based on LiFi optic communication |
| CN109936408A (en) * | 2019-01-12 | 2019-06-25 | 上海贵霖通信技术有限公司 | A kind of underwater communication apparatus and its application method using visible light |
| CN112769495A (en) * | 2021-04-08 | 2021-05-07 | 中国科学院空天信息创新研究院 | Bidirectional optical communication device, system and method |
| CN113367434A (en) * | 2021-06-18 | 2021-09-10 | 吉林建筑大学 | Individual soldier's photovoltaic semiconductor air conditioner helmet system |
| CN114866152A (en) * | 2022-04-14 | 2022-08-05 | 长春理工大学 | Underwater wireless optical communication transmitting terminal, optical communication receiving terminal, underwater wireless optical communication device and method |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103297132A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Visible light communication method and signal output device |
| CN102871255B (en) * | 2012-09-14 | 2015-04-01 | 南京邮电大学 | Visible light wireless communication module-based mine helmet |
| CN102871255A (en) * | 2012-09-14 | 2013-01-16 | 南京邮电大学 | Visible light wireless communication module-based mine helmet |
| CN103297888A (en) * | 2013-04-24 | 2013-09-11 | 青岛海信电器股份有限公司 | Wireless headset device, mobile terminal device and light source device capable of being modulated |
| CN103595489A (en) * | 2013-11-08 | 2014-02-19 | 苏州桑泰海洋仪器研发有限责任公司 | Underwater talkback system based on optical fiber sensing technology |
| CN103595489B (en) * | 2013-11-08 | 2015-08-26 | 苏州桑泰海洋仪器研发有限责任公司 | A kind of intercom system under water based on optical fiber sensing technology |
| CN104485996A (en) * | 2015-01-05 | 2015-04-01 | 北京邮电大学 | Omnidirectional voice communication transmit-receive system design based on visible light communication and application method |
| CN105024753B (en) * | 2015-06-30 | 2017-08-08 | 中国科学院声学研究所 | The visible light synchronous device of deep water |
| CN105024753A (en) * | 2015-06-30 | 2015-11-04 | 中国科学院声学研究所 | Deep water visible light synchronization device |
| CN105530055A (en) * | 2016-01-26 | 2016-04-27 | 浙江大学 | Underwater wireless red light communication device and method |
| CN105790850A (en) * | 2016-04-15 | 2016-07-20 | 南京大学 | Underwater green laser communication system |
| CN108986827A (en) * | 2018-06-21 | 2018-12-11 | 大连理工大学 | A kind of speech underwater live transmission method based on LiFi optic communication |
| CN109936408A (en) * | 2019-01-12 | 2019-06-25 | 上海贵霖通信技术有限公司 | A kind of underwater communication apparatus and its application method using visible light |
| CN112769495A (en) * | 2021-04-08 | 2021-05-07 | 中国科学院空天信息创新研究院 | Bidirectional optical communication device, system and method |
| CN113367434A (en) * | 2021-06-18 | 2021-09-10 | 吉林建筑大学 | Individual soldier's photovoltaic semiconductor air conditioner helmet system |
| CN114866152A (en) * | 2022-04-14 | 2022-08-05 | 长春理工大学 | Underwater wireless optical communication transmitting terminal, optical communication receiving terminal, underwater wireless optical communication device and method |
| CN114866152B (en) * | 2022-04-14 | 2024-02-02 | 长春理工大学 | An underwater wireless optical communication transmitting terminal, an optical communication receiving terminal and an underwater wireless optical communication device and method |
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Application publication date: 20110615 |