CN102457331B - Method for utilizing LED illumination light to realize wireless local area network communication - Google Patents
Method for utilizing LED illumination light to realize wireless local area network communication Download PDFInfo
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- CN102457331B CN102457331B CN201010518527.5A CN201010518527A CN102457331B CN 102457331 B CN102457331 B CN 102457331B CN 201010518527 A CN201010518527 A CN 201010518527A CN 102457331 B CN102457331 B CN 102457331B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to a method for utilizing LED illumination light to realize wireless local area network communication, wherein the method is applied to a wireless local area network communication system. The wireless local area network communication system comprises an access terminal photoelectric transceiver, an LED lamp set and a user terminal photoelectric transceiver. The method comprises the following steps that: the access terminal photoelectric transceiver modulates data downloaded by an access terminal router on LED lights of the LED lamp set at a data rate that is greater than 1M bps; and the user terminal photoelectric transceiver receives the modulated LED lights that are sent by the LED lamp set and then the modulated LED lights are converted into ones with a level form and frequency, wherein the level form and the frequency can be accepted by a user terminal router. According to the invention, the method has the following beneficial effects that: data transmission as well as illumination and energy conservation can be realized simultaneously; because light waves are employed to carry out data transmission, there is no electromagnetic interference of radio frequency; because the light waves can not penetrate a wall, security of data transmission is strong; and no precious radio frequency resources are occupied, so that there is no need to apply for a frequency license.
Description
Technical field
The present invention relates to Internet communication technology field, specifically a kind of LED of utilization illumination light realizes the method for wireless LAN communication.
Background technology
Utilizing Wi-Fi technology to form WLAN (wireless local area network) is current main internet wireless communication plan, and wireless data transmission rate is also more and more higher.And aspect optical communication, the application that realizes the aspects such as remote control with infrared communication mostly at present, and the free space optical communication growing up with laser spots point to-point communication in the last few years (Free Space Optical, FSO) technology, just progressively start the light wireless network epoch, FSO is the outdoor remote point-to-point laser transmission technology of comparative maturity.
On the other hand, the development of LED luminaire is advanced by leaps and bounds, and LED illuminating lamp has energy-efficient feature, and price is also more and more lower.The advantages such as brightness is high owing to having for LED lamp, life-span length, stable performance, the saving energy, it will become follow-on means of illumination.The modulating characteristic of LED-based high power and high frequency free space optical communication, LED illuminator also has the ability of signal transmission.Compare with traditional infrared and radio communication, LED visible light communication system have transmitting power high, without electromagnetic interference, without application frequency spectrum resource and the indoor advantages such as data leak that there will not be.Therefore, LED visible light communication system has significant Research Significance and larger development prospect, has been acknowledged as a kind of emerging short distance high-speed radiocommunication system.
Utilize LED visible light communication can realize energy-saving illumination and optics local internet is taken into account, there is no the interference of wireless electromagnetic, advantage is apparent.At present, every country is being striven for and how to be utilized energy-conservation LED lamp to carry out light wireless communication, realizes optical wireless LAN, regrettably at present also without optical wireless LAN network product truly.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of LED of utilization illumination light and realizes the method for wireless LAN communication.
A kind of LED of utilization illumination light realizes the method for wireless LAN communication, be applied in wireless lan communication system, described wireless lan communication system comprises incoming end optoelectronic transceiver equipment, LED lamp group and user side optoelectronic transceiver equipment, and the method comprises the steps:
The data that incoming end optoelectronic transceiver equipment passes incoming end router are down modulated on the LED light of LED lamp group with the data rate that is greater than 1M bps;
User side optoelectronic transceiver equipment receives the LED light after ovennodulation that LED lamp group sends, and then the LED light after modulation is converted to the user side router receptible level form of institute and frequency.
The present invention has following beneficial effect:
1. in transfer of data, can realize lighting energy saving, and human eye does not recognize high frequency flicker;
2. owing to adopting light wave to carry out data transmission, there is no the electromagnetic interference of wireless frequency, thereby realize the green product that country very payes attention to;
3. because light wave can not penetrate wall, strong security;
4. do not take valuable radio frequency resources, without demand frequency license;
5. owing to there is no frequency interferences, the place that can be used on those and fear Electromagnetic Interference, as on hospital, aircraft, instrument and equipment laboratory etc.
Accompanying drawing explanation
Fig. 1 is that application the present invention utilizes LED illumination light to realize the structural representation of the wireless lan communication system of the method for wireless LAN communication.
In figure: 1-incoming end router; 2-incoming end optoelectronic transceiver equipment; 3-LED lamp group; 4-user side optoelectronic transceiver equipment; 7-user side router; 8-user side work station; 20-LED high-speed driving module; 21-power supply; 22,33,53,61-signaling interface; 23-LED high-speed driving circuit; 30-infrared LED receiver module; 31-Infrared Detectors; 32,52-low noise amplifier circuit; 50-visible LED receiver module; 51-LED visible-light detector; 60-infrared LED sending module; 62-infrared LED drive circuit.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, technical scheme of the present invention is clearly and completely described.
The present invention utilizes LED illumination light to realize the method for wireless LAN communication, be applied in wireless lan communication system, Fig. 1 is the structural representation of described wireless lan communication system, comprises incoming end optoelectronic transceiver equipment 2, LED lamp group 3 and user side optoelectronic transceiver equipment 4.In the present invention, connect the equipment of master network and be referred to as incoming end optoelectronic transceiver equipment 2, the equipment that connects the local area network (LAN) that user side work station or several computers be linked to be is called user side optoelectronic transceiver equipment 4.
Described incoming end optoelectronic transceiver equipment 2 comprises LED high-speed driving module 20 and infrared LED receiver module 30.LED high-speed driving module 20 comprises power supply 21, signaling interface 22 and LED high-speed driving circuit 23, wherein power supply 21 provides operating voltage for signaling interface 22 and LED high-speed driving circuit 23, signaling interface 22 for master network device, for example incoming end router one connects, the data flow that network (being incoming end router one) is passed down converts the LED lamp receptible level form of institute and frequency to, LED high-speed driving circuit 23 is for being carried in the data flow of changing through signaling interface 22 input electrode of LED lamp group 3, thereby make LED lamp group 3 send the illumination light of flicker at a high speed, realization is carried under network data and is reached user side.The data rate that wherein LED high-speed driving circuit 23 use are greater than 1M bps is modulated LED visible ray, makes human eye experience the flicker less than light completely.
Infrared LED receiver module 30 comprises Infrared Detectors 31, low noise amplifier circuit 32 and signaling interface 33, the infrared light through Data Modulation that Infrared Detectors 31 sends for receiving user side optoelectronic transceiver equipment 4, low noise amplifier circuit 32 further amplifies for the carrying out of infrared light that Infrared Detectors 31 is received, signaling interface 33, for the infrared light after amplifying being converted to the signal of telecommunication of network data form, is realized uploading of data.
In order not affect the LED response time, the LED in LED lamp group 3 can not select the LED bulb that scribbles fluorescent material; In order to concentrate LED luminous energy and intensity as far as possible, the LED in LED lamp group 3 can select the LED that dispersion angle is little and use a light shield, to avoid the infrared component of LED visible ray to be transmitted on the Infrared Detectors 31 of infrared LED receiver module 30 in addition.
Described user side optoelectronic transceiver equipment 4 comprises visible LED receiver module 50 and infrared LED sending module 60.Visible LED receiver module 50 comprises LED visible-light detector 51, low noise amplifier circuit 52 and signaling interface 53, the illumination light that LED visible-light detector 51 sends for receiving LED lamp group 3, low noise amplifier circuit 52 further amplifies for the carrying out of illumination light that LED visible-light detector 51 is received, and signaling interface 53 is for being converted to 7 receptible level forms of user side router and frequency by the illumination light after amplifying.LED visible-light detector 51 can be selected the high-power detector with amasthenic lens.
Infrared LED sending module 60 comprises signaling interface 61 and infrared LED drive circuit 62, when the uploading data signal of work station 8 is after user side router 7 inputs to described infrared LED sending module 60, signaling interface 61 is for uploading data signal being converted to 30 receptible level of infrared LED receiver module and frequency, and infrared LED drive circuit 62 for sending the Data Modulation of changing through signaling interface 61 on infrared light.Generally, infrared LED sending module 60 is with lens and have in certain angle of divergence 30 spends, and aims at Infrared Detectors 31 as far as possible, because an infrared transmission distance is limited, is generally 3 meters of indoor distances to 5 meters of left and right.
The present invention utilizes LED illumination light to realize the method for wireless LAN communication, be applied in above-mentioned wireless lan communication system, described wireless lan communication system comprises incoming end optoelectronic transceiver equipment 2, LED lamp group 3 and user side optoelectronic transceiver equipment 4, incoming end optoelectronic transceiver equipment 2 is connected with incoming end router one, user side optoelectronic transceiver equipment 4 is connected with user side router 7, and the method comprises the steps:
The data that incoming end optoelectronic transceiver equipment 2 passes incoming end router one are down modulated on the LED light of LED lamp group 3 with the data rate that is greater than 1Mbps;
User side optoelectronic transceiver equipment 4 receives the LED light after ovennodulation that LED lamp group 3 sends, and then the LED light after modulation is converted to 7 receptible level forms of user side router and frequency.
The method also comprises the steps:
User side optoelectronic transceiver equipment 4 is modulated at uploading data signal on infrared light and sends;
Incoming end optoelectronic transceiver equipment 2 receives the infrared light through Data Modulation that user side optoelectronic transceiver equipment 4 sends, and then infrared light is converted to the signal of telecommunication of network data form.
Scheme of the present invention has realized the optical communication transmission link of full duplex, be equivalent to originally to change into LED light wireless connections link by the mode that grid line connects, specifically each link has a pair of optoelectronic transceiver equipment (incoming end optoelectronic transceiver equipment 2 and user side optoelectronic transceiver equipment 4), wherein one end incoming end is to realize light with monochromatic light such as ruddiness, blue light etc. or two, three primary colors illumination white light to carry data transmission transmission, receives and realizes with Infrared Detectors.
The present invention has following beneficial effect:
1, in transfer of data, can realize lighting energy saving, and human eye does not recognize high frequency flicker;
2, owing to adopting light wave to carry out data transmission, there is no the electromagnetic interference of wireless frequency, thereby realize the green product that country very payes attention to;
3, because light wave can not penetrate wall, strong security;
4, do not take valuable radio frequency resources, without demand frequency license;
5, owing to there is no frequency interferences, the place that can be used on those and fear Electromagnetic Interference, as on hospital, aircraft, instrument and equipment laboratory etc.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any belong to those skilled in the art the present invention disclose technical scope in; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (8)
1. a method of utilizing LED illumination light to realize wireless LAN communication, be applied in wireless lan communication system, described wireless lan communication system comprises incoming end optoelectronic transceiver equipment (2), LED lamp group (3) and user side optoelectronic transceiver equipment (4), it is characterized in that: the method comprises the steps:
The data that incoming end optoelectronic transceiver equipment (2) passes incoming end router (1) are down modulated on the LED light of LED lamp group (3) with the data rate that is greater than 1M bps;
User side optoelectronic transceiver equipment (4) receives the LED light after ovennodulation that LED lamp group (3) sends, and then the LED light after modulation is converted to user side router (7) the receptible level form of institute and frequency.
2. the method for claim 1, is characterized in that: also comprise the steps: that user side optoelectronic transceiver equipment (4) is modulated at uploading data signal on infrared light and sends; Incoming end optoelectronic transceiver equipment (2) receives the infrared light through Data Modulation that user side optoelectronic transceiver equipment (4) sends, and then infrared light is converted to the signal of telecommunication of network data form.
3. the method for claim 1, it is characterized in that: described incoming end optoelectronic transceiver equipment (2) comprises LED high-speed driving module (20) and infrared LED receiver module (30), LED high-speed driving module (20) comprises power supply (21), first signal interface (22) and LED high-speed driving circuit (23), and infrared LED receiver module (30) comprises Infrared Detectors (31), low noise amplifier circuit (32) and secondary signal interface (33).
4. method as claimed in claim 3, is characterized in that: the first signal interface (22) of LED high-speed driving module (20) is connected with incoming end router (1), and the data flow that network is passed down converts the LED lamp receptible level form of institute and frequency to; LED high-speed driving circuit (23) will be carried in the input electrode of LED lamp group (3) through the data flow of first signal interface (22) conversion.
5. method as claimed in claim 3, it is characterized in that: Infrared Detectors (31) receives the infrared light through Data Modulation that user side optoelectronic transceiver equipment (4) sends, the carrying out of the infrared light that low noise amplifier circuit (32) receives Infrared Detectors (31) further amplified, secondary signal interface (33) is converted to the infrared light after amplifying the signal of telecommunication of network data form, realizes uploading of data.
6. method as claimed in claim 3, it is characterized in that: described user side optoelectronic transceiver equipment (4) comprises visible LED receiver module (50) and infrared LED sending module (60), visible LED receiver module (50) comprises LED visible-light detector (51), low noise amplifier circuit (52) and the 3rd signaling interface (53), and infrared LED sending module (60) comprises the 4th signaling interface (61) and infrared LED drive circuit (62).
7. method as claimed in claim 6, it is characterized in that: the 4th signaling interface (61) of infrared LED sending module (60) converts uploading data signal to infrared LED receiver module (30) the receptible level of institute and frequency, infrared LED drive circuit (62) will send through the Data Modulation of the 4th signaling interface (61) conversion on infrared light.
8. method as claimed in claim 6, it is characterized in that: LED visible-light detector (51) receives the illumination light that LED lamp group (3) sends, amplifying of the illumination light that low noise amplifier circuit (52) receives LED visible-light detector (51), the illumination light after amplifying is converted to user side router (7) the receptible level form of institute and frequency by the 3rd signaling interface (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010518527.5A CN102457331B (en) | 2010-10-25 | 2010-10-25 | Method for utilizing LED illumination light to realize wireless local area network communication |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010518527.5A CN102457331B (en) | 2010-10-25 | 2010-10-25 | Method for utilizing LED illumination light to realize wireless local area network communication |
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| CN102457331A CN102457331A (en) | 2012-05-16 |
| CN102457331B true CN102457331B (en) | 2014-05-21 |
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| CN201010518527.5A Expired - Fee Related CN102457331B (en) | 2010-10-25 | 2010-10-25 | Method for utilizing LED illumination light to realize wireless local area network communication |
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| CN102811091B (en) * | 2012-07-06 | 2015-02-04 | 北京邮电大学 | Visible light communication-based broadband access device and method |
| JP2016500949A (en) * | 2012-10-16 | 2016-01-14 | コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． | Optical encoding method, optical module, and receiving unit |
| US9277401B2 (en) | 2013-01-22 | 2016-03-01 | Qualcomm Incorporated | Device utilizing an optical signal to access an access point |
| CN103220041A (en) * | 2013-04-22 | 2013-07-24 | 南京邮电大学 | Wireless router access system based on visible light |
| CN103595471B (en) * | 2013-12-02 | 2019-07-26 | 吴东辉 | A method, system and device for space optical communication |
| CN103618571B (en) * | 2013-12-02 | 2019-11-05 | 吴东辉 | A kind of method and system using lighting source transmission information |
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| CN104993874A (en) * | 2015-08-10 | 2015-10-21 | 中国人民解放军信息工程大学 | Visible light communication tunnel lamp used in mine pits |
| CN105049119A (en) * | 2015-09-09 | 2015-11-11 | 苏州昭创光电技术有限公司 | Visible light both-way communication system |
| CN105206204A (en) * | 2015-10-26 | 2015-12-30 | 桂林电子科技大学 | LED light transmission visual electronic navigation system |
| CN105790835B (en) * | 2016-04-15 | 2019-02-26 | 华中科技大学 | A data center wireless optical communication system |
| CN106027147A (en) * | 2016-04-29 | 2016-10-12 | 东北电力大学 | Internet-based visible light receiving-transmitting all-in-one system |
| CN105898748A (en) * | 2016-05-26 | 2016-08-24 | 北京京东尚科信息技术有限公司 | Method and device for optical access network of intelligent equipment |
| CN106100732B (en) * | 2016-06-04 | 2019-05-14 | 清华大学深圳研究生院 | A kind of asymmetrical network Transmission system and transmission method based on visible light communication |
| CN106788746A (en) * | 2016-09-20 | 2017-05-31 | 丛聪 | A kind of wireless light communication mutually melts equipment |
| CN109450535A (en) * | 2018-11-16 | 2019-03-08 | 广东工业大学 | A kind of wireless communications method based on visible light and radio-frequency technique |
| CN112187630B (en) * | 2020-09-21 | 2022-03-15 | 西安邮电大学 | A bidirectional communication system, networking method, computer equipment and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6548967B1 (en) * | 1997-08-26 | 2003-04-15 | Color Kinetics, Inc. | Universal lighting network methods and systems |
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| CN1893321A (en) * | 2005-07-05 | 2007-01-10 | 安华高科技杰纳勒尔Ip（新加坡）私人有限公司 | Optical communication system, lighting equipment and terminal equipment used therein |
| CN1725721A (en) * | 2005-07-19 | 2006-01-25 | 电子科技大学 | A Passive Optical Network Based on Optical Code Division Multiple Access Technology |
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