CN104537406A - Wireless recognition and control method for passive one-way visible light tags - Google Patents
Wireless recognition and control method for passive one-way visible light tags Download PDFInfo
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- CN104537406A CN104537406A CN201410840987.8A CN201410840987A CN104537406A CN 104537406 A CN104537406 A CN 104537406A CN 201410840987 A CN201410840987 A CN 201410840987A CN 104537406 A CN104537406 A CN 104537406A
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Abstract
The invention discloses a wireless recognition and control method for passive one-way visible light tags. A one-way visible light recognition passive electronic tag and reader device is arranged and comprises a VLID electronic tag and a reader. The VLID electronic tag is composed of a powered coil, an electric energy receiving module, an ID generation module, an LED driving module and an LED. The reader is composed of a power transmission coil, an electric energy transmitting module, an ID verification module, a communication and control module, a judgment module, a power source and a photoelectric sensor. The reader provides power for the tag, the optical information of the tag is read and verified, and the tag information is sent to other devices. The tag is used for receiving wireless electric energy of the reader, for generating, storing, modulating and coding the ID information of the tag and for driving the LED to send visible light signals, and finally the communication and control function of the passive VLID electronic tag on other devices is achieved. The method is easy to operate, environmentally friendly and free of electromagnetic interference and pollution, thereby having a large market promotion prospect.
Description
Technical field
The invention belongs to technical field of visible light communication, particularly a kind of wireless identification of passive one-way visible optical label and control method.
Background technology
Visible light communication (Visible Light Communication, be called for short VLC) technology, utilize the luminaires such as LED to send modulation visible light signal with information exactly at transmitting terminal, receiving end utilizes lighting apparatus to receive modulation visible light signal to realize the method for radio communication.This technology is the new wireless communication technology be found in recent years, is used for supplementing even substituting at present other means by development, as technology such as: radio, infrared or laser communications, to solve the deficiency of these technology.
Visible light communication is different from the optical communication modes such as radio, infrared or laser: radio, infrared light be can't see, and the transmit direction of signal is clear and definite not, therefore has very large insecurity; Laser direction is strong, the little communication being applicable to opening freely, and laser power consumption is large simultaneously, little suitable Low Power Consumption Portable equipment.In addition, radio also can produce the harmful effect such as electromagnetic radiation, interference.
Radio-frequency (RF) identification (Radio Frequency Identification, be called for short RFID) technology, reads and writes related data by radio-frequency signal identification specific objective, and without the need to setting up Mechanical Contact between recognition system and specific objective.According to the difference of its power supply mode, RFID label tag can be divided into active label (Active tag) and passive label (Passive tag).Wherein, passive RFID inside not charged pool, when the read-write scope of read write line is outer, electronic tag is in passive states; When entering the read-write scope of read write line, electronic tag extracts the power supply needed for its work from the radio-frequency (RF) energy that read write line sends.
Wireless charging comes from wireless power conveying technology.Wireless charging, also known as doing induction charging, non-contact inductive charging, be utilize near field to respond to, i.e. electromagnetic coupled, transmits its energy to consumer by power-supply unit, and this consumer uses the energy received charge to battery or power for consumer.
The present invention's technology such as visible light communication, wireless power that has been exactly conjunctive use, provide a kind of wireless identification and control method of passive one-way visible optical label, solve the major issue of visible light communication equipment to light, little miniaturization, allow it can extensive popularization and application as magnetic card, various frivolous passive RFID, become supplementary, the identification of even alternative magnetic card, RFID and opertaing device.
Summary of the invention
The object of this invention is to provide a kind of wireless identification and control method of passive one-way visible optical label.
Concrete steps are:
(1) arrange a kind of one-way visible light identification passive electronic label and reader device, comprise VLID electronic tag and reader, VLID electronic tag is made up of electricity reception coil, electric energy receiver module, ID generation module, LED drive module and LED; Reader is made up of power transmission coil, electric energy transmitter module, ID authentication module, communication and control module, judging module, power supply and photoelectric sensor; Wherein, electricity reception coil connects electric energy receiver module, electric energy receiver module is connection ID generation module and LED drive module respectively, be interconnected between ID generation module and LED drive module, LED drive module connects LED, LED is corresponding with photoelectric sensor by visible light signal, photoelectric sensor connects judging module, judging module connection ID authentication module, ID authentication module connects communication and control module, electric energy transmitter module connects power transmission coil, and power supply connects electric energy transmitter module, communication and control module, ID authentication module and judging module respectively; Power transmission coil is corresponding with electricity reception coil by wireless charging energy.
Described reader is used for providing energy to VLID electronic tag, read, verify the optical information of VLID electronic tag, and the information of reading is sent to other equipment, the perform region of reader provide the coverage of enough electric energy of normal work can to VLID electronic tag for power transmission coil.
Described power supply is used for providing electric energy for each functional module of reader.
Described electric energy transmitter module, for generation of electromagnetic signal, makes power transmission coil produce charged electrical magnetic field.
Described power transmission coil, for generation of charged electrical magnetic field, sends wireless charging energy.
Described photoelectric sensor for responding to reception visible light signal, and converts corresponding electric signal to.
The electric signal that described judging module is used for photoelectric sensor conversion exports carries out analog to digital conversion, and the numerical value of output conversion is to ID authentication module.
The information that described ID authentication module is used for demodulation, decoding judging module exports, reads, verifies the information that the VLID electronic tag received sends.
Described communication and control module are used for and external device communication, send VLID electronic labeling information and the authorization information of the reception of ID authentication module.
Described VLID electronic tag, for receiving the radio energy of reader, produces, deposits the information of VLID electronic tag, modulate, encode to information, and driving LED sends visible light signal.
Described electricity reception coil utilizes galvanomagnetic effect, and induction receives induced electricity, the magnetic energy that power transmission coil sends, i.e. wireless charging energy, and is transferred to electric energy receiver module.
The actual induction electricity that electricity reception coil accepts by described electric energy receiver module, magnetic energy collect, and are converted into electric energy, and are used as each module for power supply that power supply is VLID electronic tag.
Described ID generation module for generation of, preserve the information of VLID electronic tag, information is carried out modulating-coding, and sends drive singal to LED drive module.
The modulating coding signal that ID generation module exports by described LED drive module, carries out digital-to-analog conversion, and driving LED sends visible light signal.
Described LED, under the drive singal of LED drive module, sends visible light signal to photoelectric sensor.
(2), after reader energising, the electric signal that electric energy transmitter module changes, and the charged electrical magnetic field changed by power transmission coil, outwards launch wireless charging energy.
(3) after electricity reception coil receives wireless charging energy, utilize galvanomagnetic effect, produce inductive electromagnetic energy, and be transferred to electric energy receiver module.
(4) electric energy receiver module actual induction electric energy, magnetic energy collection that electricity reception coil is received, and be converted into electric energy, being used as power supply is each module for power supply of VLID electronic tag; Simultaneously, electricity reception coil can produce an induction field to power transmission coil, the mutual inductance effect that this induction field and power transmission coil produce can cause the electromagnetic parameter of the electromagnetic field between electricity reception coil and power transmission coil to change, after electric energy transmitter module and power transmission coil transduces to the change of the electromagnetic parameter caused by mutual inductance effect, electric energy transmitter module just sends enabling signal to power supply, power supply provides electric energy to other functional modules of reader, and each module of reader all powers on and enters normal operating conditions.
(5) after obtaining electric energy from electric energy receiver module, VLID electronic tag starts to work on power, and ID generation module generates an id information, and information is carried out modulating-coding.
(6) ID generation module is according to the id information through modulating-coding, sends drive singal to LED drive module, and LED drive module driving LED sends visible light signal.
(7) photoelectric sensor induction receives the visible light signal from LED electrical subtab, and converts corresponding electric signal to.
(8) judging module carries out judgement conversion to the electric signal that photoelectric sensor conversion exports, and exports transformed data to ID authentication module.
(9) output information of ID authentication module demodulating and decoding judging module, identifies the information of VLID electronic tag, and is verified.
(10) ID authentication module is by the information of VLID electronic tag, external agency is sent to by communication and control module, realized and the communication of other equipment, controlling functions by external agency, finally realize passive VLID electronic tag to the communication of other equipment, controlling functions.
The inventive method is simple to operate, is easy to apply, and the VLID electronic tag of equipment therefor, without the need to powered battery, decreases the pollution of battery, also removes the trouble changing battery from; Simultaneously owing to adopting the signal of communication of visible light wave range not by the interference of electromagnetic field, also do not produce electromagnetic signal interference, electromagnetic pollution, security is good, is a kind of communication mode of environmental protection; Meanwhile, communicate optical signal has illumination functions concurrently, can provide illumination in short-term, make read-write process more convenient for read-write process; VLID Electronic Tag Structure function is simple, can be made into small-sized micromodule equipment; Device read-write adopts contactless mode, reads and writes easy.The inventive method, can the portable use scheme of magnetic card or Radio Frequency ID card as an alternative.
Accompanying drawing explanation
The structural representation that Fig. 1 is the VLID electronic tag that uses in the embodiment of the present invention and reader.
Mark in figure: 1-electric energy receiver module; 2-ID generation module; 3-LED drive module; 4-electric energy transmitter module; 5-communication and control module; 6-ID authentication module; 7-judging module; 8-power supply; 9-power transmission coil; 10-electricity reception coil; 11-wireless charging energy; 12-visible light signal; 13-LED; 14-photoelectric sensor.
Embodiment
embodiment:
The VLID electronic tag that the present embodiment uses and the structural representation of reader are shown in accompanying drawing 1.
(1) a kind of one-way visible light identification passive electronic label and reader device are set, comprise VLID electronic tag and reader, VLID electronic tag is made up of electricity reception coil 10, electric energy receiver module 1, ID generation module 2, LED drive module 3 and LED13, reader is made up of power transmission coil 9, electric energy transmitter module 4, ID authentication module 6, communication and control module 5, judging module 7, power supply 8 and photoelectric sensor 14, wherein, electricity reception coil 10 connects electric energy receiver module 1, electric energy receiver module 1 is connection ID generation module 2 and LED drive module 3 respectively, be interconnected between ID generation module 2 and LED drive module 3, LED drive module 3 connects LED13, LED13 is corresponding with photoelectric sensor 14 by visible light signal 12, photoelectric sensor 14 is arranged in judging module 7, judging module 7 connection ID authentication module 6, ID authentication module 6 connects communication and control module 5, electric energy transmitter module 4 connects power transmission coil 9, power supply 8 connects electric energy transmitter module 4 respectively, communication and control module 5, ID authentication module 6 and judging module 7, power transmission coil 9 is corresponding with electricity reception coil 10 by wireless charging energy 11.
Described reader is used for providing energy to VLID electronic tag, read, verify the optical information of VLID electronic tag, and the information of reading is sent to other equipment, the perform region of reader provide the coverage of enough electric energy of normal work can to VLID electronic tag for power transmission coil.
Described power supply 8 provides electric energy for each functional module for reader.
Described electric energy transmitter module 4, for generation of electromagnetic signal, makes power transmission coil 9 produce charged electrical magnetic field.
Described power transmission coil 9, for generation of charged electrical magnetic field, sends wireless charging energy 11.
Described photoelectric sensor 14 receives visible light signal 12 for responding to, and converts corresponding electric signal to.
Described judging module 7 carries out analog to digital conversion for the electric signal exported photoelectric sensor 14 conversion, and the numerical value of output conversion is to ID authentication module 6.
The information that described ID authentication module 6 exports for demodulation, decoding judging module 7, reads, verifies the information that the VLID electronic tag received sends.
Described communication and control module 5 for external device communication, send VLID electronic labeling information and authorization information that ID authentication module 6 receives.
Described VLID electronic tag, for receiving the radio energy of reader, produces, deposits the information of VLID electronic tag, modulate, encode to information, and driving LED 13 sends visible light signal 12.
Described electricity reception coil 10 utilizes galvanomagnetic effect, and induction receives induced electricity, the magnetic energy that power transmission coil 9 sends, i.e. wireless charging energy 11, and is transferred to electric energy receiver module 1.
The actual induction electricity that electricity reception coil 10 accepts by described electric energy receiver module 1, magnetic energy collect, and are converted into electric energy, and are used as each module for power supply that power supply is VLID electronic tag.
Described ID generation module 2 for generation of, preserve the information of VLID electronic tag, information is carried out modulating-coding, and sends drive singal to LED drive module 3.
The modulating coding signal that ID generation module 2 exports by described LED drive module 3, carry out digital-to-analog conversion, and driving LED 13 sends visible light signal 12.
Described LED13, under the drive singal of LED drive module 3, sends visible light signal 12 to photoelectric sensor 14.
(2), after reader energising, the electric signal that electric energy transmitter module 4 changes, and the charged electrical magnetic field changed by power transmission coil 9, outwards launch wireless charging energy 11.
(3) after electricity reception coil 10 receives wireless charging energy 11, utilize galvanomagnetic effect, produce inductive electromagnetic energy, and be transferred to electric energy receiver module 1.
(4) electric energy receiver module 1 actual induction electric energy, magnetic energy collection that electricity reception coil 10 is received, and be converted into electric energy, being used as power supply is each module for power supply of VLID electronic tag; Simultaneously, electricity reception coil 10 can produce an induction field to power transmission coil 9, the mutual inductance effect that this induction field and power transmission coil 9 produce can cause the electromagnetic parameter of the electromagnetic field between electricity reception coil 10 and power transmission coil 9 to change, after electric energy transmitter module 4 and power transmission coil 9 sense the change of the electromagnetic parameter caused by mutual inductance effect, electric energy transmitter module 4 just sends enabling signal to power supply 8, power supply 8 provides electric energy to other functional modules of reader, and each module of reader all powers on and enters normal operating conditions.
(5) after obtaining electric energy from electric energy receiver module 1, VLID electronic tag starts to work on power, and ID generation module 2 generates an id information, and information is carried out modulating-coding.
(6) ID generation module 2 is according to the id information through modulating-coding, sends drive singal to LED drive module 3, and LED drive module 3 driving LED 13 sends visible light signal 12.
(7) photoelectric sensor 14 responds to the visible ray light signal 12 received from LED electrical subtab, and converts corresponding electric signal to.
(8) electric signal that judging module 7 pairs of photoelectric sensors 14 conversions export carries out judgement conversion, and exports transformed data to ID authentication module 6.
(9) output information of ID authentication module 6 demodulating and decoding judging module 7, identifies the information of VLID electronic tag, and is verified.
(10) ID authentication module 6 is by the information of VLID electronic tag, external agency is sent to by communication and control module 5, realized and the communication of other equipment, controlling functions by external agency, finally realize passive VLID electronic tag to the communication of other equipment, controlling functions.
Claims (1)
1. the wireless identification of passive one-way visible optical label and a control method, is characterized in that concrete steps are:
(1) arrange a kind of one-way visible light identification passive electronic label and reader device, comprise VLID electronic tag and reader, VLID electronic tag is made up of electricity reception coil, electric energy receiver module, ID generation module, LED drive module and LED; Reader is made up of power transmission coil, electric energy transmitter module, ID authentication module, communication and control module, judging module, power supply and photoelectric sensor; Wherein, electricity reception coil connects electric energy receiver module, electric energy receiver module is connection ID generation module and LED drive module respectively, be interconnected between ID generation module and LED drive module, LED drive module connects LED, LED is corresponding with photoelectric sensor by visible light signal, photoelectric sensor is arranged in judging module, judging module connection ID authentication module, ID authentication module connects communication and control module, electric energy transmitter module connects power transmission coil, and power supply connects electric energy transmitter module, communication and control module, ID authentication module and judging module respectively; Power transmission coil is corresponding with electricity reception coil by wireless charging energy;
Described reader is used for providing energy to VLID electronic tag, read, verify the optical information of VLID electronic tag, and the information of reading is sent to other equipment, the perform region of reader provide the coverage of enough electric energy of normal work can to VLID electronic tag for power transmission coil;
Described power supply is used for providing electric energy for each functional module of reader;
Described electric energy transmitter module, for generation of electromagnetic signal, makes power transmission coil produce charged electrical magnetic field;
Described power transmission coil, for generation of charged electrical magnetic field, sends wireless charging energy;
Described photoelectric sensor for responding to reception visible light signal, and converts corresponding electric signal to;
The electric signal that described judging module is used for photoelectric sensor conversion exports carries out analog to digital conversion, and the numerical value of output conversion is to ID authentication module;
The information that described ID authentication module is used for demodulation, decoding judging module exports, reads, verifies the information that the VLID electronic tag received sends;
Described communication and control module are used for and external device communication, send VLID electronic labeling information and the authorization information of the reception of ID authentication module;
Described VLID electronic tag, for receiving the radio energy of reader, produces, deposits the information of VLID electronic tag, modulate, encode to information, and driving LED sends visible light signal;
Described electricity reception coil utilizes galvanomagnetic effect, and induction receives induced electricity, the magnetic energy that power transmission coil sends, i.e. wireless charging energy, and is transferred to electric energy receiver module;
The actual induction electricity that electricity reception coil accepts by described electric energy receiver module, magnetic energy collect, and are converted into electric energy, and are used as each module for power supply that power supply is VLID electronic tag;
Described ID generation module for generation of, preserve the information of VLID electronic tag, information is carried out modulating-coding, and sends drive singal to LED drive module;
The modulating coding signal that ID generation module exports by described LED drive module, carries out digital-to-analog conversion, and driving LED sends visible light signal;
Described LED, under the drive singal of LED drive module, sends visible light signal to photoelectric sensor;
(2), after reader energising, the electric signal that electric energy transmitter module changes, and the charged electrical magnetic field changed by power transmission coil, outwards launch wireless charging energy;
(3) after electricity reception coil receives wireless charging energy, utilize galvanomagnetic effect, produce inductive electromagnetic energy, and be transferred to electric energy receiver module;
(4) electric energy receiver module actual induction electric energy, magnetic energy collection that electricity reception coil is received, and be converted into electric energy, being used as power supply is each module for power supply of VLID electronic tag; Simultaneously, electricity reception coil can produce an induction field to power transmission coil, the mutual inductance effect that this induction field and power transmission coil produce can cause the electromagnetic parameter of the electromagnetic field between electricity reception coil and power transmission coil to change, after electric energy transmitter module and power transmission coil transduces to the change of the electromagnetic parameter caused by mutual inductance effect, electric energy transmitter module just sends enabling signal to power supply, power supply provides electric energy to other functional modules of reader, and each module of reader all powers on and enters normal operating conditions;
(5) after obtaining electric energy from electric energy receiver module, VLID electronic tag starts to work on power, and ID generation module generates an id information, and information is carried out modulating-coding;
(6) ID generation module is according to the id information through modulating-coding, sends drive singal to LED drive module, and LED drive module driving LED sends visible light signal;
(7) photoelectric sensor induction receives the visible ray light signal from LED electrical subtab, and converts corresponding electric signal to;
(8) judging module carries out judgement conversion to the electric signal that photoelectric sensor conversion exports, and exports transformed data to ID authentication module;
(9) output information of ID authentication module demodulating and decoding judging module, identifies the information of VLID electronic tag, and is verified;
(10) ID authentication module is by the information of VLID electronic tag, external agency is sent to by communication and control module, realized and the communication of other equipment, controlling functions by external agency, finally realize passive VLID electronic tag to the communication of other equipment, controlling functions.
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| CN201410840987.8A CN104537406A (en) | 2014-12-30 | 2014-12-30 | Wireless recognition and control method for passive one-way visible light tags |
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Cited By (4)
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| CN105279544A (en) * | 2015-10-30 | 2016-01-27 | 天津大学 | Passive RFID tag utilizing visible light communication |
| CN106529645A (en) * | 2016-10-20 | 2017-03-22 | 天津大学 | Automatic identification passive tag based on visible light communication and communication system thereof |
| CN108734040A (en) * | 2018-05-22 | 2018-11-02 | 苏州大学 | The quick detection device of passive RFID tags |
| CN113346628A (en) * | 2021-06-07 | 2021-09-03 | 浙江大学 | Bidirectional optical communication and wireless power supply single-shaft rotation inertial navigation system |
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| CN106529645A (en) * | 2016-10-20 | 2017-03-22 | 天津大学 | Automatic identification passive tag based on visible light communication and communication system thereof |
| CN106529645B (en) * | 2016-10-20 | 2019-12-17 | 天津大学 | Automatic identification passive tag based on visible light communication and communication system thereof |
| CN108734040A (en) * | 2018-05-22 | 2018-11-02 | 苏州大学 | The quick detection device of passive RFID tags |
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| CN113346628A (en) * | 2021-06-07 | 2021-09-03 | 浙江大学 | Bidirectional optical communication and wireless power supply single-shaft rotation inertial navigation system |
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