CN104866878A - coherent light coding identification system - Google Patents
coherent light coding identification system Download PDFInfo
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- CN104866878A CN104866878A CN201510264081.0A CN201510264081A CN104866878A CN 104866878 A CN104866878 A CN 104866878A CN 201510264081 A CN201510264081 A CN 201510264081A CN 104866878 A CN104866878 A CN 104866878A
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Abstract
The invention relates to a coherent light coding identification system. The system comprises a transmitting end, a beam expanding collimation device and a receiving end. The transmitting end comprises a solar cell array, a driving and coding modulation circuit and a laser. The solar cell array converts solar energy into electric energy and provides power for the transmitting end. Through a programmable chip in the driving and coding modulation circuit, data information which needs to be transmitted is borne to the laser. And a coherent light modulation technology is used to carry out modulation on a laser signal output by the laser. The beam expanding collimation device is used to enlarge light spots output by the laser so that the light spots can uniformly cover the solar cell array of the receiving end. The receiving end comprises the solar cell array and a signal demodulation module. According to the system of the invention, an optical wave band signal is taken as an information carrier of a non-contact automatic identification technology. Therefore, the system has the following advantages that transmission information contents are large; transmission information directivity is good; transmission energy is concentrated and so on.
Description
Art
The present invention relates to a kind of laser tag technology, particularly relate to and utilize coherent source (as: LASER Light Source) and solar cell to realize noncontact automatically to identify.
Background technology
At present, noncontact automatic identification technology mainly refers to radio-frequency (RF) identification (RFID Radio Frequency Identification) technology, and it is a kind of simple wireless system, is usually made up of reader and label two basic devices.Its basic functional principle is: label enters in reader magnetic field range, receive the radiofrequency signal that reader sends, the information (passive label) in energy transmission label is obtained by means of induction current, or the information (active label) initiatively sent by means of externally fed in label, realizes contactless information and automatically identifies.
The US Patent No. 3713148 " the passive wireless electricity transceiver of band memory " issued for 1973 is the founder of radio-frequency (RF) identification patent.After this, growing along with the day by day universal of RFID technique and its research and development, the amount of the application for patent of RFID is surging year by year, and this technology is also widely used in each field of society simultaneously.A kind of multi-agent system of simulating supply chain in Logistics Operation is proposed in document " Maximising the Efficiency of Logistics Operations with Radio FrequencyIdentification Technology ", by it being combined with RFID technique, the efficiency of Logistics Operation effectively can be improved; Document " MedicalApplication Basedon Radio Frequency Identification (RFID) " proposes a kind of closed loop application program based on RFID be used in hospital information system, this closed loop procedure is from collection patient information, by the confirmation of information, to the order fulfillment performing doctor, last information can re-write hospital information system.Whole process can the accuracy of effective guarantee information, thus farthest avoids the generation of malpractice.
Above-mentioned noncontact automatic identification technology is all the information transmission based on radio-frequency range, and therefore the aspect such as its inromation bandwidth, transmission range, energy harvesting, directivity, anti-interference and power consumption is all subject to the impact of radio-frequency range characteristics of signals.
Summary of the invention
The present invention is intended to the above-mentioned deficiency overcoming prior art, provides a kind of noncontact automatic recognition system.The present invention utilizes optical region signal as the information carrier of noncontact automatic identification technology, has the advantages such as transmission of information amount is large, transmission of information good directionality, transferring energy are concentrated.Technical scheme of the present invention is as follows:
A kind of coherent light code recognition system, comprises transmitting terminal, beam-expanding collimation device and receiving end, wherein,
Transmitting terminal, comprise solar battery array (1), driving and code modulated circuits and laser instrument, sun power is converted to electric energy by the first solar battery array, and power for transmitting terminal, be carried on laser instrument by the programmable chip in driving and code modulated circuits by needing the data message of transmission, and utilize coherent light modulation technique to modulate the laser signal that laser instrument exports, include the information of needs transmission in the laser signal that laser instrument exports;
Beam-expanding collimation device, expands for the hot spot that exported by laser instrument, can uniform fold on the solar battery array (2) of receiving end;
Receiving end, comprise solar battery array 2 and signal receiving module, the energy of solar battery array 2 pairs of laser signal carryings carries out opto-electronic conversion and storage, and by the electric signal transmission that obtains after opto-electronic conversion in signal receiving module, complete the signal receiving to the data message that laser carries by signal receiving module.
The invention has the beneficial effects as follows:
First, utilize the signal of optical region as the signal vehicle of non-contact information automatic identification technology, select the laser modulation signal of suitable wavelength to export.The coherent light exported due to laser instrument has spectrum line width, concentration of energy, good directionality, modulation rate advantages of higher, therefore, for traditional radio-frequency range noncontact automatic identification technology, laser code (transmitting terminal, label) have transmission of information amount large, transmit that directive property is good, transmission range long, the feature such as information security in transmitting procedure.Secondly, the spectral response of laser output wavelength and receiving end solar battery array matches, and can realize the wireless transmission of energy, therefore in message transmitting procedure simultaneously, receiving end (read write line) can realize non-active operation, can realize the storage of energy simultaneously.
Accompanying drawing explanation
Accompanying drawing 1: coherent light code recognition system entire block diagram
Embodiment
Below in conjunction with attached Example, the present invention will be further described.
As shown in Figure 1, system is made up of transmitting terminal (label), beam-expanding collimation device, receiving end (read write line) three part.Transmitting terminal comprises solar battery array 1, and driving, code modulated circuits, and laser instrument, receiving end comprises solar battery array 2 and signal receiving module.
Generally, under transmitting terminal is placed in outdoor sunlight, charge to solar battery array 1, the solar battery array 1 obtaining energy will be powered for driving, code modulated circuits.According to the spectral response of solar battery array 2, select the laser instrument with suitable output wavelength corresponding with it.Be carried to needing the data message of transmission on laser instrument by the programmable chip in driving, code modulated circuits, and utilize coherent light modulation technique to modulate laser signal.The information of needs transmission is included in the laser signal that now laser instrument exports.Then according to the distance between laser instrument to receiving end (read write line), hot spot laser instrument exported by beam-expanding collimation device expand, can uniform fold on the solar battery array 2 of receiving end; Solar battery array 2 is except the energy carried laser carries out opto-electronic conversion and storage, also by the electric signal transmission that obtains after opto-electronic conversion in signal receiving module, complete the signal receiving of the data message to laser carrying, thus realize automatically identifying with the noncontact that optical region signal is carrier.
Claims (1)
1. a coherent light code recognition system, comprises transmitting terminal, beam-expanding collimation device and receiving end, wherein,
Transmitting terminal, comprise solar battery array (1), driving and code modulated circuits and laser instrument, sun power is converted to electric energy by solar battery array (1), and power for transmitting terminal, be carried on laser instrument by the programmable chip in driving and code modulated circuits by needing the data message of transmission, and utilize coherent light modulation technique to modulate the laser signal that laser instrument exports, include the information of needs transmission in the laser signal that laser instrument exports.
Beam-expanding collimation device, expands for the hot spot that exported by laser instrument, can uniform fold on the solar battery array (2) of receiving end;
Receiving end, comprise solar battery array (2) and signal receiving module, solar battery array (2) carries out opto-electronic conversion and storage to the energy that laser signal carries, and by the electric signal transmission that obtains after opto-electronic conversion in signal receiving module, complete the signal receiving to the data message that laser carries by signal receiving module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510264081.0A CN104866878A (en) | 2015-05-21 | 2015-05-21 | coherent light coding identification system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510264081.0A CN104866878A (en) | 2015-05-21 | 2015-05-21 | coherent light coding identification system |
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| CN104866878A true CN104866878A (en) | 2015-08-26 |
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| CN201510264081.0A Pending CN104866878A (en) | 2015-05-21 | 2015-05-21 | coherent light coding identification system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919712A (en) * | 2018-07-11 | 2018-11-30 | 汉能移动能源控股集团有限公司 | Coding controller, coding control system and coding method |
| CN111074806A (en) * | 2019-12-30 | 2020-04-28 | 台州市星标交通科技有限公司 | Debugging system of solar spike |
| CN112001382A (en) * | 2020-09-22 | 2020-11-27 | 北京零态空间数码科技有限公司 | Identity recognition system and method |
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| CN103559475A (en) * | 2013-11-22 | 2014-02-05 | 广州优库电子有限公司 | Multi-wavelength laser modulation one-dimensional bar code reader and implementing mode thereof |
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| CN104392262A (en) * | 2014-11-13 | 2015-03-04 | 深圳市国创新能源研究院 | Novel data label and data reading-writing system and method of data label |
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2015
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Patent Citations (5)
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| US20080239408A1 (en) * | 2007-03-30 | 2008-10-02 | Brother Kogyo Kabushiki Kaisha | Communication Apparatus |
| CN101533460A (en) * | 2009-04-24 | 2009-09-16 | 清华大学 | System and method of radio frequency identification |
| CN103903041A (en) * | 2012-12-28 | 2014-07-02 | 北京北大千方科技有限公司 | Photoelectronic label, photoelectronic label reader-writer and method for reading and writing photoelectronic label |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108919712A (en) * | 2018-07-11 | 2018-11-30 | 汉能移动能源控股集团有限公司 | Coding controller, coding control system and coding method |
| CN108919712B (en) * | 2018-07-11 | 2023-12-12 | 东君新能源有限公司 | Coding controller, coding control system and coding method |
| CN111074806A (en) * | 2019-12-30 | 2020-04-28 | 台州市星标交通科技有限公司 | Debugging system of solar spike |
| CN112001382A (en) * | 2020-09-22 | 2020-11-27 | 北京零态空间数码科技有限公司 | Identity recognition system and method |
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Application publication date: 20150826 |