CN204145505U - The easy interactive communication system of electric room near field of light wireless high-speed - Google Patents
The easy interactive communication system of electric room near field of light wireless high-speed Download PDFInfo
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- CN204145505U CN204145505U CN201420643891.8U CN201420643891U CN204145505U CN 204145505 U CN204145505 U CN 204145505U CN 201420643891 U CN201420643891 U CN 201420643891U CN 204145505 U CN204145505 U CN 204145505U
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Abstract
The utility model discloses the easy interactive communication system of a kind of electric room near field of light wireless high-speed, comprise local terminal electronic equipment A and opposite end electronic equipment B, described local terminal electronic equipment A comprises the information reading module, coding module, light source driver module, the LED of ultralow rising time delay or the laser transmitting illuminant that connect successively; Described opposite end electronic equipment B comprises the photoelectric detector light source, photoelectric conversion module, electronic signal processing module, decoder module, the information writing module that connect successively.The utility model technology can be applicable in the electronic equipments such as mobile phone, intelligent terminal, panel computer, notebook computer, high speed information can be realized wireless interconnected, there is two-forty, safe and secret, environmental protection is radiationless and multiple advantage such as interactive type communication, information non-contact transmission field between following intelligent terminal, has larger prospect.
Description
Technical field
The utility model belongs to technical field of photo communication, relates to the easy interactive communication system of electric room near field of light wireless high-speed, specifically a kind of short-range light wireless communication technology, allows electric room to carry out contactless Point-to-Point Data Transmission.
Background technology
Along with the develop rapidly of electronic equipment and Large Volume Data communication service, people are to can everywhere everywhere by the mode of wireless transmission between electronic equipment, and transmission big data quantity, high efficiency information requirements are more and more urgent.Obviously, the radio interconnected of electric room is the important bottleneck improving data traffic between limiting device.Near field contactless communication between current electronic equipment mainly contains three kinds of forms: 1, Bluetooth wireless communication; 2, Infrared Wireless Communication; 3, NFC (abbreviation of English Near Field Communication, i.e. wireless near field communication) radio communication.For Bluetooth wireless communication, it is the radiotechnics of a kind of support equipment short haul connection (in general 10m).Adopt distributed network structure and fast frequency hopping and short packet technology, support point-to-point and point-to-multipoint delivery, be operated in 2.4GHz ISM (i.e. industry, science, the medical science) frequency range of global general-use, its at present the fastest message transmission rate be 2.5Mbps (theoretical maximum transmission rate is 24Mbps).Whether adopt time division duplex transmission scheme to realize full duplex transmission, its main problem is that what to adopt is radio communication system, and long transmission distance, maintain secrecy, safe hidden danger when there is significant data transmission.Secondly, between every a pair equipment of Bluetooth technology regulation when carrying out bluetooth communication, must one be leading role's look, another is from role, just can communicate, must be searched by main side during communication, initiate pairing, after link setup success, both sides get final product transceiving data, therefore operate more complicated, in use may be not right due to operation, often running into two equipment rooms cannot the problem such as successful matching.Also lower with regard to transmission rate in addition.For wireless infrared transmitting communication, it is the communication mode utilizing infrared ray to carry out signal transmission, by carrying out modulation and demodulation to binary digital signal, to utilize infrared channel to transmit, its at present the fastest message transmission rate be 16Mbps, this is exactly convenient Information Communication fast or inadequate for the feature that the information age is maximum.For NFC radio communication, it is a kind of short-range high frequency wireless communication technology, allows to carry out contactless Point-to-Point Data Transmission between electronic equipment, and NFC have employed two-way identification and connection.13.56MHz frequency range is worked in 20cm distance.Although NFC is also the electromagnetic induction coupled modes transmission by radio frequency section in frequency spectrum, this is the same with radio-frequency (RF) identification, still there is very large difference between the two.NFC takes unique signal attenuation technique, there is relative to NFC radio-frequency (RF) identification the features such as distance is near, bandwidth is high, transmission security, but its fastest current message transmission rate is only 424kbps (theoretical maximum transmission rate is 868kbps), and this is its maximum shortcoming.
At present for the communication technology of near field visible ray as information carrier, if publication number is the Chinese invention patent application of CN104022820A, disclose and " adopt equipment room near field identification communication system, the method for optical transport, gate control system ", it is recognition system mainly, realizes the identification between 2 equipment, instead of transmission of large capacity information, the technology adopted is the simple modulation of intensity of illumination and flashing rate etc., and therefore transmission information is very little; And carry out process request by server and confirm, not only extend the transmission time, and its fail safe having much room for improvement.Be also the Chinese invention patent application of CN103490812A just like publication number, disclose " mobile phone near field communication system and method based on visible ray ", this technical scheme is just by being divided into multiple region by mobile phone screen, each region bright light is different, the information of carrying out transmission, therefore transmission rate is also very low, only has 200kbps.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art and shortcoming, proposes the easy interactive communication system of a kind of electric room near field of light wireless high-speed.The technical scheme that the utility model proposes, be referred to as (the abbreviation of English Light Near FieldCommunication of contactless communication-LNFC near field between electronic equipment, i.e. light near field communication) communication technology scheme, this technical scheme adopts light wave as carrier wave, be carried in needing the data of transmission on LED or laser as signal emitting-source to opposite end utilizing emitted light signal by modulating-coding, opposite end is by photoelectric detector light signal, after opto-electronic conversion, carry out signal transacting, be finally decoded as required data.
For achieving the above object, the technical solution adopted in the utility model is as follows:
The easy interactive communication system of electric room near field of light wireless high-speed, comprises local terminal electronic equipment A and opposite end electronic equipment B,
Described local terminal electronic equipment A comprises the information reading module, coding module, light source driver module, the LED of ultralow rising time delay or the laser that connect successively;
Wherein information reading module is for reading local terminal information to be sent; Coding module is used for the information of reading to carry out chnnel coding; Light source driver module is for controlling the ultralow LED of rising time delay or the luminescence of laser;
Described opposite end electronic equipment B comprises the photodetector, photoelectric conversion module, electronic signal processing module, decoder module, the information writing module that connect successively;
The wherein light launched for receiving the LED of ultralow rising time delay or laser of photodetector; Photoelectric conversion module is used for changing light signal into the signal of telecommunication; Electronic signal processing module is used for carrying out data shaping and recovery to the signal of telecommunication; Decoder module is used for data decode; Information writing module is used for information to write in data storage card.
In order to realize two-way communication, local terminal electronic equipment A described in native system also comprises the photodetector, photoelectric conversion module, electronic signal processing module, decoder module and the information writing module that connect successively; Described electronic signal processing module is connected with decoder module;
Described opposite end electronic equipment B also comprises the information reading module, coding module, light source driver module, the LED of ultralow rising time delay or the laser that connect successively; Described electronic signal processing module is connected with decoder module.
Such scheme is preferred, and described light source driver module comprises bias current unit and modulated current unit, and bias current unit is all connected with coding module with the input of modulated current unit, and output is all connected with LED or laser; Described bias current unit makes LED or the laser works linear work district more than threshold value for generation of constant-current bias, and described modulated current unit makes LED or laser according to the luminescence of coding module modulation signal for generation of modulated current.
Such scheme is preferred, in order to adapt to wider operating temperature range, and in larger operating temperature range, keep light source output power to stablize, can normally work in whole temperature range to make equipment, described LED or laser are provided with temperature detecting unit, described light source driver module also comprises temperature compensation unit, and the input of this temperature compensation unit is provided with temperature detecting unit with LED or laser and is connected, and output is all connected with bias current unit and modulated current unit.
Compared with prior art, the utility model has the following advantages:
1, the utility model is using light as information carrier, adopts light digital modulation, and modulation rate is not by the restriction of interface; When be connected with mobile phone use time, transmission rate is mated with mobile phone USB interface transmission rate; Transmission rate and read-write TF rate-matched when used alone; And what we adopted is LED or the laser of ultralow rising time delay, the rise time of light source is less than 3.5ns, transmission rate is very high, and maximum communication rate is 100Mbps, is about 7 times of the most rapid rate of near field contactless communication that current electric room uses; And this speed can also be higher, just be limited to now the storage card read or write speed of electronic equipment internal, in the future once there be the storage card of support higher read or write speed to occur, so employing this programme realize traffic rate that electric room passes mutually just can be higher;
2, because light has certain directivity, and adopt short haul connection, therefore there is the confidentiality of height;
3, data can simultaneously transmitted in both directions, and has the confidentiality of height, the application that the mobile payment that therefore may be used for realizing intelligent terminal and message reference in transaction, peer-to-peer communication and movement etc. are new;
4, the utility model is a kind of point to point operation pattern, and transmission range is shorter, and therefore speed is set up in transmission, opens light source just easily can realize communication by a key;
5, owing to adopting light as the carrier of information, therefore there is not the problem of radio frequency band resource occupation, simultaneously also anti-frequency interferences, radiationless, environmental protection;
6, cost is not high, practicality and reliability remarkable.
Accompanying drawing explanation
Fig. 1 is the easy interactive communication system Organization Chart of a kind of electric room near field of light wireless high-speed of the utility model;
Fig. 2 is that embodiment applies schematic diagram on electronic equipment (mobile phone);
Fig. 3 is light source driver module theory diagram.
Number in the figure is: 20, mobile phone flashlight; 21, camera; 22, photodetector; 23, the LED of ultralow rising time delay or laser.
Embodiment
In order to make technical solutions of the utility model more clear, below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Figure 2, the utility model discloses the easy interactive communication system of a kind of electric room near field of light wireless high-speed, comprise local terminal electronic equipment A and opposite end electronic equipment B,
Described local terminal electronic equipment A and opposite end electronic equipment B include the information reading module, coding module, light source driver module, the LED of ultralow rising time delay or laser 23 transmitting illuminant that are connected successively, and the photodetector 22 connected successively receives light source, photoelectric conversion module, electronic signal processing module, decoder module and information writing module; Described electronic signal processing module is connected with decoder module.In the preferred embodiment, module in local terminal electronic equipment A and opposite end electronic equipment B all realizes with entity circuit mode, and information reading module is information read circuit, coding module is coding circuit, light source driver module is light source driving circuit, photoelectric conversion module is photoelectric switching circuit, electronic signal processing module is Electric signal processing, decoder module is decoding circuit, information writing module is information write circuit.
Wherein information read circuit is for reading local terminal information to be sent; Coding circuit is used for the information of reading to carry out chnnel coding; Light source driving circuit is for the luminescence of the LED or laser 23 that control ultralow rising time delay; The light that photodetector 22 is launched for the LED or laser 23 receiving ultralow rising time delay; Photoelectric switching circuit is used for changing light signal into the signal of telecommunication; Electric signal processing circuit is used for carrying out data shaping and recovery to the signal of telecommunication; Decoding circuit is used for data decode; Information write circuit is used for information to write in data storage card.
As shown in Figure 3, described light source driving circuit comprises bias current unit and modulated current unit, and bias current unit is bias current circuit, and modulated current unit is modulated current circuit.Bias current circuit is all connected with coding circuit with the input of modulated current circuit, and output is all connected with LED or laser.
Described LED or laser are provided with temperature detecting unit, described light source driving circuit also comprises temperature-compensation circuit, the input of this temperature-compensation circuit is provided with temperature detecting unit with LED or laser and is connected, and output is all connected with bias current circuit and modulated current circuit.
In the present embodiment, two electronic equipments are two cell phone intelligent terminals: side a and b, as shown in Figure 2.In the preferred embodiment, with A end to B end transmission data instance (indicating: two cell phone intelligent terminals also can two-way simultaneous communication, and two ends can be undertaken by this flow process).Intelligent mobile phone terminal should have mobile phone flashlight 20, camera 21, photodetector 22 is (if the CCD corresponding speed of camera 21 is faster in the future, meet light signal and receive requirement, directly photodetector 22 can be substituted completely) with camera 21, light source is that the LED of ultralow rising time delay or laser 23 transmitting illuminant are (if when photoflash lamp LED modulation rate meets signal transmission rate requirement in the future, LED or laser 23 transmitting illuminant of the alternative ultralow rising time delay of mobile phone flashlight 20 can be used), and the rise time is less than 3.5ns (according to formula: BW=0.35/t, wherein BW is LED light source bandwidth, t is the rise time of LED light source, the transmission bandwidth of equipment is greater than 100M, require that the rise time of LED light source is less than 3.5ns.)。
The easy interactive communication system of a kind of electric room near field of light wireless high-speed of the utility model is realized by following steps:
Need the cell phone intelligent terminal passing data communication mutually to start by two.The cell phone intelligent terminal of A end carries out data to be transferred selection by mobile phone application software, and the cell phone intelligent terminal inner of A end reads waiting message by reading circuit.The cell phone intelligent terminal inner coding circuit of A end is encoded to the information read.The LED light source drive circuit of the ultralow rising time delay of cell phone intelligent terminal inner of A end carries out light digital modulation by coding, the operation principle that this light source driving circuit adopts provides suitable bias current and modulated current to LED or laser, and bias current circuit produces constant-current bias and makes LED or the laser works linear work district more than threshold value.Modulated current circuit produces modulation circuit makes LED or laser according to modulation signals luminescence.In order to adapt to wider operating temperature range, in light source driving circuit, we add temperature-compensation circuit (keeping light source output power to stablize in larger operating temperature range), can normally work in whole temperature range to make equipment.Through experiment, this circuit has good effect when signal transmission.Under bias current circuit and the acting in conjunction of modulated current circuit, the LED of the ultralow rising time delay of cell phone intelligent exterior of terminal that control A holds or laser 23, the speed that LED or laser cannot be sensed with human eye carries out flashing, light is transmitted to the cell phone intelligent terminal of B end as information carrier.Thus complete the transmission of data.
The light that the cell phone intelligent terminal that the cell phone intelligent terminal that B holds receives A end by external photodetector 22 sends.The converting optical signals received is the signal of telecommunication by the cell phone intelligent exterior of terminal photodetector 22 of B end.The circuit such as cell phone intelligent terminal inner filter circuit, amplifying circuit of B end carries out data shaping and recovery to the signal of telecommunication after conversion.Data after shaping, recovery are carried out data demodulates by the cell phone intelligent terminal inner decoding circuit of B end.The cell phone intelligent terminal inner information write circuit of B end is by the cell phone intelligent terminal inner data storage card of the data write B end after decoding process, thus the data communication of cell phone intelligent terminal that the cell phone intelligent terminal completing A end is held to B.
When the cell phone intelligent terminal of B end communicates to the cell phone intelligent terminal data that A holds, carry out according to above-mentioned steps order, carry out data communication with two-way simultaneous.
Passed data message is passed through light-to-current inversion, by it using light as information carrier, send the other side to, light signal restores as the signal of telecommunication by photodetector 22 by the other side, thus the high-speed communication between finishing equipment, because current device limits, maximum communication rate is 100Mbps, and its traffic rate is also considerably beyond existing near field non-contact transmission mode.The utility model can be applicable in the electronic equipments such as mobile phone, intelligent terminal, panel computer, notebook computer, high speed information can be realized wireless interconnected, there is two-forty, safe and secret, environmental protection is radiationless and multiple advantage such as interactive type communication, information non-contact transmission field between following intelligent terminal, has larger prospect.
Above-described embodiment, be only the specific case further described the purpose of this utility model, technical scheme and beneficial effect, the utility model is not defined in this.All make within scope of disclosure of the present utility model any amendment, equivalent replacement, improvement etc., be all included within protection range of the present utility model.
Claims (7)
1. the easy interactive communication system of electric room near field of light wireless high-speed, comprises local terminal electronic equipment A and opposite end electronic equipment B, it is characterized in that:
Described local terminal electronic equipment A comprises the information reading module, coding module, light source driver module, the LED of ultralow rising time delay or the laser (23) that connect successively;
Wherein information reading module is for reading local terminal information to be sent; Coding module is used for the information of reading to carry out chnnel coding; Light source driver module is for the luminescence of the LED or laser (23) that control ultralow rising time delay;
Described opposite end electronic equipment B comprises the photodetector (22), photoelectric conversion module, electronic signal processing module, decoder module, the information writing module that connect successively;
The wherein light launched for the LED or laser (23) receiving ultralow rising time delay of photodetector (22); Photoelectric conversion module is used for changing light signal into the signal of telecommunication; Electronic signal processing module is used for carrying out data shaping and recovery to the signal of telecommunication; Decoder module is used for data decode; Information writing module is used for information to write in data storage card.
2. the easy interactive communication system of electric room near field of light wireless high-speed according to claim 1, is characterized in that: LED or laser (23) rise time of described ultralow rising time delay are less than 3.5ns.
3. the easy interactive communication system of electric room near field of light wireless high-speed according to claim 1, it is characterized in that: described light source driver module comprises bias current unit and modulated current unit, bias current unit is all connected with coding module with the input of modulated current unit, and output is all connected with LED or laser.
4. the easy interactive communication system of electric room near field of light wireless high-speed according to claim 3, it is characterized in that: described LED or laser are provided with temperature detecting unit, described light source driver module also comprises temperature compensation unit, the input of this temperature compensation unit is provided with temperature detecting unit with LED or laser and is connected, and output is all connected with bias current unit and modulated current unit.
5. the easy interactive communication system of electric room near field of light wireless high-speed according to claim 4, it is characterized in that: described bias current unit is bias current circuit, described modulated current unit is modulated current circuit, and described temperature compensation unit is temperature-compensation circuit; Described bias current unit makes LED or the laser works linear work district more than threshold value for generation of constant-current bias, and described modulated current unit makes LED or laser according to the luminescence of coding module modulation signal for generation of modulated current.
6. the easy interactive communication system of electric room near field of light wireless high-speed according to claim 1, is characterized in that: described local terminal electronic equipment A also comprises the photodetector (22), photoelectric conversion module, electronic signal processing module, decoder module and the information writing module that connect successively; Described electronic signal processing module is connected with decoder module; Described opposite end electronic equipment B also comprises the information reading module, coding module, light source driver module, the LED of ultralow rising time delay or the laser (23) that connect successively; Described electronic signal processing module is connected with decoder module.
7. the easy interactive communication system of electric room near field of light wireless high-speed according to claim 1, is characterized in that: described information reading module is information read circuit, coding module is coding circuit, light source driver module is light source driving circuit, photoelectric conversion module is photoelectric switching circuit, electronic signal processing module is Electric signal processing, decoder module is decoding circuit, information writing module is information write circuit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283611B (en) * | 2014-10-31 | 2018-05-08 | 中国电子科技集团公司第三十四研究所 | Electric room near field light wireless high-speed simplicity interactive communication system and method |
| WO2018145311A1 (en) * | 2017-02-13 | 2018-08-16 | 深圳市欸阿技术有限公司 | Data sharing system, smart terminal, and first smart terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283611B (en) * | 2014-10-31 | 2018-05-08 | 中国电子科技集团公司第三十四研究所 | Electric room near field light wireless high-speed simplicity interactive communication system and method |
| WO2018145311A1 (en) * | 2017-02-13 | 2018-08-16 | 深圳市欸阿技术有限公司 | Data sharing system, smart terminal, and first smart terminal |
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