CN105279544B - It is a kind of to utilize the passive radio-frequency identification labeled of visible light communication - Google Patents
It is a kind of to utilize the passive radio-frequency identification labeled of visible light communication Download PDFInfo
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- CN105279544B CN105279544B CN201510732786.0A CN201510732786A CN105279544B CN 105279544 B CN105279544 B CN 105279544B CN 201510732786 A CN201510732786 A CN 201510732786A CN 105279544 B CN105279544 B CN 105279544B
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- radio
- visible light
- light communication
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- photoreceiver
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Abstract
It is a kind of to utilize the passive radio-frequency identification labeled of visible light communication, there is sequentially connected photoreceiver, decision circuit, digital baseband, numerical control switch and radio frequency backscattered modulation circuit, digital baseband is also connected with memory, it is additionally provided with and is used for photoreceiver, decision circuit, digital baseband, memory, the electric power management circuit of the supply voltage of numerical control switch and radio frequency backscattered modulation circuit with stable, the output terminal connection radio-frequency antenna of radio frequency backscattered modulation circuit, the power input connection photocell of electric power management circuit, photronic output terminal also passes through capacitance connection photoreceiver.The present invention with the light source of visible light communication transmitter provides energy for label, effectively overcomes ordinary passive RF tag electromagnetic radiation big, it is harmful the shortcomings that；Emitting stage uses radio frequency back-modulation and radio-frequency antenna, can overcome the shortcomings that visible light communication emitting stage power consumption is big, LED is difficult to integrate.The reduction of label overall power further reduces at the same time, improves label chip integrated level.
Description
Technical field
The present invention relates to a kind of RFID tag.Signal, which is received, more particularly to one kind uses visible light communication pattern,
Transmitting signal utilizes the passive radio-frequency identification labeled of visible light communication using radio frequency backscattered modulation pattern.
Background technology
With the development of RFID (Radio Frequency Identification, radio frequency identification) technology, RFID electronics
Label is gradually applied in identification technology field, and RFID electronic label is mainly by label chip, reader, data transfer and processing
System three parts form.RFID electronic label have strong antijamming capability, contain much information, non-vision scope read-write, long lifespan and
The advantages that species is more.
Above-mentioned existing RFID technique at least has the following disadvantages and deficiency：1st, ordinary passive RFID tag needs transmission power
Very big reader provides energy for label, therefore the electromagnetic radiation of ordinary passive RFID tag is big, poor anti jamming capability, security
Difference, long-time service are harmful.2nd, due to disadvantages mentioned above, ordinary passive RFID tag can only use 1-2 RFID work frequency
Section, it is impossible to be applied to most of RFID working frequency range.3rd, it is difficult to single-chip integration.
Emerging visible light communication (VLC：Visible Light Communication) technology, its emitting stage is using photograph
Bright power supply transmits the optical signal of data modulation, and receiver stage uses the number that optical detector and photoreceiver solution dim signal are transmitted
According to.The harmless Preliminary Applications of visible light communication are in indoor communications.Nothing can also be fabricated to using visible light communication principle
Source label, at reader end, provides modulation data and energy, but label is returned using the light source of VISIBLE LIGHT EMISSION machine for label
A light emitting diode (LED) and corresponding drive circuit are needed to reader, power consumption is larger, is unfavorable for label non-active operation.
The content of the invention
A kind of reception signal the technical problem to be solved by the invention is to provide label uses optical communication modes, transmitting
Signal utilizes the passive radio-frequency identification labeled of visible light communication using radio frequency backscattered modulation pattern.
The technical solution adopted in the present invention is：It is a kind of using the passive radio-frequency identification labeled of visible light communication, include
Sequentially connected photoreceiver, decision circuit, digital baseband, numerical control switch and radio frequency backscattered modulation circuit, the number
Word base band is also connected with memory, is additionally provided with for the photoreceiver, decision circuit, digital baseband, memory, numerical control
The electric power management circuit of the supply voltage of switch and radio frequency backscattered modulation circuit with stable, the radio frequency backscattering tune
The output terminal connection radio-frequency antenna of circuit processed, the power input connection photocell of the electric power management circuit, the photocell
Output terminal also pass through capacitance connection photoreceiver.
The photocell uses external separation solar cell.
The material of the solar cell uses polysilicon or monocrystalline silicon or GaAs.
The radio-frequency antenna uses round screw thread structural antenna.
The a kind of of the present invention uses optic communication using the passive radio-frequency identification labeled of visible light communication, the reception signal of label
Pattern, transmitting signal use radio frequency backscattered modulation pattern.Energy is provided for label with the light source of visible light communication transmitter,
Effectively overcome ordinary passive RF tag electromagnetic radiation big, it is harmful the shortcomings that；Emitting stage is reversely adjusted using the radio frequency
System and radio-frequency antenna, can overcome the shortcomings that visible light communication emitting stage power consumption is big, LED is difficult to integrate.Label overall power at the same time
Reduction further reduce, improve label chip integrated level.
Brief description of the drawings
Fig. 1 is the passive radio-frequency identification labeled composition block diagram of the present invention；
Fig. 2 is the label physical structure diagram that the present invention implements to provide.
In figure
1：Photocell 2：Electric power management circuit
3：Capacitance 4：Photoreceiver
5：Decision circuit 6：Digital baseband
7：Memory 8：Numerical control switch
9：Radio frequency backscattered modulation circuit 10：Radio-frequency antenna
11：Label chip
Embodiment
The a kind of of the present invention is done using the passive radio-frequency identification labeled of visible light communication with reference to embodiment and attached drawing
Go out to describe in detail.
The a kind of of the present invention uses optical communication modes using the passive radio-frequency identification labeled of visible light communication, reception signal,
Transmitting signal uses radio frequency backscattered modulation pattern.Implement the present invention can solve the radiation of conventional RFID electromagnetic it is big, may be right
Human body produces the shortcomings that injury, RFID is applied in some the crowd is dense local such as supermarkets and hospital, can be with
Use indoors.
The birth of visible light communication technology, with its visible light wave range harmless to human eye, there is no electromagnetic radiation, without logical
The advantages that letter blind area, convenient and efficient, suitable information security field are applied provides new for the shortcomings of the common RFID of solution
Thinking, but visible light communication has the shortcomings that emitting stage power consumption is big, LED cannot be integrated, in order to preferably utilize RFID and visible
The advantages of optic communication, while overcome the shortcomings of RFID and visible light communication, therefore the present invention leads to RFID technique and visible ray
Letter technology is combined, and embodiment, which provides, a kind of utilizes the passive radio-frequency identification labeled of visible light communication.
As shown in Figure 1, the present invention's is a kind of using the passive radio-frequency identification labeled of visible light communication, includes and be sequentially connected
Photoreceiver 4, decision circuit 5, digital baseband 6, numerical control switch 8 and radio frequency backscattered modulation circuit 9, the digital base
Band 6 is also connected with memory 7, be additionally provided with for the photoreceiver 4, decision circuit 5, digital baseband 6, memory 7, number
Control switch 8 and radio frequency backscattered modulation circuit 9 provide the electric power management circuit 2 of the supply voltage of stabilization, and the radio frequency is reverse
The output terminal connection radio-frequency antenna 10 of modulation circuit 9 is scattered, the power input of the electric power management circuit 2 connects photocell 1,
The output terminal of the photocell 1 also connects photoreceiver 4 by capacitance 3.Wherein, the photocell 1 uses the external separation sun
Can battery.The material of the solar cell uses polysilicon or monocrystalline silicon or GaAs.The radio-frequency antenna 10 can use circle
Shape helical structure antenna.
In the present invention, in order to control the passive radio-frequency identification labeled volume of overall visible light communication to improve integrated level, too
Positive energy battery chooses smallest size of solar cell as far as possible on the premise of meeting for overall label stable power-supplying, such as：
The monocrystaline silicon solar cell of 30mm × 30mm × 5mm, the gallium arsenide solar cell of 10mm × 10mm × 2mm etc..
Pass through the selection of above-mentioned solar cell, when receiving the visible ray for carrying optical signal photograph, one side solar energy
Luminous energy is changed into electric energy and is input to power-supply management system by battery, and power-supply management system is integrated into label chip using CMOS technology
In, its function is not only in that the unstable supply voltage for inputting solar cell, changes into stable supply voltage and has
What is imitated, is reasonable, stablizing provides energy for label chip inside modules.Power-supply management system is also comprising matched at the same time
Power storage module, for when receiving low light signals for label chip provide stabilization power supply.On the other hand, solar-electricity
Pond optical signal changes into electric signal and inputs to capacitance, can be by reasonably choosing since capacitance has the characteristic for going straight-through friendship
Capacitance with by obtain solar cell output in ac signal and be entered into photoreceiver, realize visible light signal
To the conversion process of electric signal.
Further, photoreceiver is realized using optical receiver module in traditional visible light communication and is believed faint electric current
Number change into voltage signal and amplified, be eventually converted into digital signal and be input to judging module.
Further, using traditional RFID technique, light is connect by judgement, digital baseband, memory, numerical control switch module
The digital signal of receipts machine output handle and store accordingly.
Further, in order to reduce the power consumption of label and improve the integrated level of label chip, using radio frequency backscattering
Modulation technique and related circuit carry out the digital signal after processing radio-frequency modulations and will be modulated by position radio-frequency antenna
Emission of radio frequency signals is gone out, and is finally completed it will be seen that optical signal changes into radio frequency output signal this process.
With reference to figure 2, in order to more fully illustrate the present invention, embodiment provides a kind of above-mentioned visible light communication passive RF
Identify object construction scheme during label specific implementation.The object construction includes：Radio-frequency antenna 10, photocell 1, label chip
11.In order to improve the integrated level of label as far as possible, reduce the area of label, radio-frequency antenna can use round screw thread structure day
Line, photocell is placed on inside round screw thread structural antenna, and label chip is then pasted on round screw thread structural antenna.
Implement working frequency range and other open frequency ranges that the present invention can make passive RFID be operated in active RFID, such as
2.45GHz, 5.8GHz, 60GHz etc., these frequency ranges have reader and Tag Radio Frequency transmission power stringent limitation, present invention mark
Label power supply comes from light energy, without powerful radio frequency sending set, it is possible to expand the frequency of use of passive RFID, so as to increase
Add application range.Reduce transmission power also reduce transmitter cost, using the frequency of higher can reduce antenna size so as to
The size of label is reduced, passive RFID tags is attached on smaller object, such as jewellery, device, Miniature precision
Machine etc..
It will be appreciated by those skilled in the art that attached drawing is the schematic diagram of a preferred embodiment, the embodiments of the present invention
Sequence number is for illustration only, does not represent the quality of embodiment.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (4)
1. it is a kind of using the passive radio-frequency identification labeled of visible light communication, include sequentially connected photoreceiver (4), judgement electricity
Road (5), digital baseband (6), numerical control switch (8) and radio frequency backscattered modulation circuit (9), the digital baseband (6) also connect
Memory (7) is connect, is additionally provided with for the photoreceiver (4), decision circuit (5), digital baseband (6), memory
(7), numerical control switch (8) and radio frequency backscattered modulation circuit (9) provide the electric power management circuit (2) of stable supply voltage,
It is characterized in that, the output terminal connection radio-frequency antenna (10) of the radio frequency backscattered modulation circuit (9), the power management electricity
The power input connection photocell (1) on road (2), the output terminal of the photocell (1) also connect photoreceiver by capacitance (3)
(4)。
2. a kind of the passive radio-frequency identification labeled of visible light communication is utilized according to claim 1, it is characterised in that described
Photocell (1) uses external separation solar cell.
3. a kind of the passive radio-frequency identification labeled of visible light communication is utilized according to claim 2, it is characterised in that described
The material of solar cell uses polysilicon or monocrystalline silicon or GaAs.
4. a kind of the passive radio-frequency identification labeled of visible light communication is utilized according to claim 1, it is characterised in that described
Radio-frequency antenna (10) use round screw thread structural antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510732786.0A CN105279544B (en) | 2015-10-30 | 2015-10-30 | It is a kind of to utilize the passive radio-frequency identification labeled of visible light communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510732786.0A CN105279544B (en) | 2015-10-30 | 2015-10-30 | It is a kind of to utilize the passive radio-frequency identification labeled of visible light communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105279544A CN105279544A (en) | 2016-01-27 |
| CN105279544B true CN105279544B (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510732786.0A Expired - Fee Related CN105279544B (en) | 2015-10-30 | 2015-10-30 | It is a kind of to utilize the passive radio-frequency identification labeled of visible light communication |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| KR102465523B1 (en) | 2017-11-13 | 2022-11-11 | 한국전자통신연구원 | Apparatus and method for avoiding cross reading of rfid using visible light recognition |
| CN110649967B (en) * | 2019-09-05 | 2021-02-02 | 西安交通大学 | Hybrid communication method based on visible light energy collection and radio frequency backscattering |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103714369A (en) * | 2013-11-13 | 2014-04-09 | 沈新阳 | Passive photoelectric label, photoelectric reader, photoelectric label system and information exchange method |
| CN103956034A (en) * | 2014-04-27 | 2014-07-30 | 桂林理工大学 | Visible light communication and radio frequency identification dual-mode wireless control device |
| CN103955736A (en) * | 2014-04-30 | 2014-07-30 | 广西电网公司电力科学研究院 | Radio frequency identification electronic tag with photoelectric conversion power supply function |
| 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 |
| CN104537406A (en) * | 2014-12-30 | 2015-04-22 | 桂林理工大学 | Wireless recognition and control method for passive one-way visible light tags |
| CN104715272A (en) * | 2015-03-30 | 2015-06-17 | 江苏物联网研究发展中心 | Backward reflecting modulation tag with light as medium and reader-writer system |
-
2015
- 2015-10-30 CN CN201510732786.0A patent/CN105279544B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103714369A (en) * | 2013-11-13 | 2014-04-09 | 沈新阳 | Passive photoelectric label, photoelectric reader, photoelectric label system and information exchange method |
| CN103956034A (en) * | 2014-04-27 | 2014-07-30 | 桂林理工大学 | Visible light communication and radio frequency identification dual-mode wireless control device |
| CN103955736A (en) * | 2014-04-30 | 2014-07-30 | 广西电网公司电力科学研究院 | Radio frequency identification electronic tag with photoelectric conversion power supply function |
| 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 |
| CN104537406A (en) * | 2014-12-30 | 2015-04-22 | 桂林理工大学 | Wireless recognition and control method for passive one-way visible light tags |
| CN104715272A (en) * | 2015-03-30 | 2015-06-17 | 江苏物联网研究发展中心 | Backward reflecting modulation tag with light as medium and reader-writer system |
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| CN105279544A (en) | 2016-01-27 |
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Granted publication date: 20180504 Termination date: 20181030 |