CN101533460A - System and method of radio frequency identification - Google Patents
System and method of radio frequency identification Download PDFInfo
- Publication number
- CN101533460A CN101533460A CN200910082558A CN200910082558A CN101533460A CN 101533460 A CN101533460 A CN 101533460A CN 200910082558 A CN200910082558 A CN 200910082558A CN 200910082558 A CN200910082558 A CN 200910082558A CN 101533460 A CN101533460 A CN 101533460A
- Authority
- CN
- China
- Prior art keywords
- label chip
- card reader
- chip
- information
- label
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a system and a method of radio frequency identification, belonging to the field of radio frequency identification. The system comprises a card reader, a label chip and a label antenna, wherein the label antenna is integrated on the label chip, the label chip further comprises a photoelectric conversion module for receiving light energy, and the light energy is used for supplying power for the label chip. The method comprises the followings: the label chip collects the light energy and converts the light into electrical energy; the label chip uses the electrical energy to carry out alternation and processing of information with the card reader to finish the identification with the card reader. The photoelectric conversion module is used for providing energy for the label chip so that the on-chip antenna of the label supplies power for the label without obtaining energy from the on-chip antenna that is just used for information alternation so that the larger working distance between the card reader and the label chip is possible, thereby overcoming the limitation of the working distance of the on-chip antenna for the label chip.
Description
Technical field
The present invention relates to field of radio frequency identification, particularly a kind of system and method for radio-frequency (RF) identification.
Background technology
In the prior art, RFID (Radio Frequency Identification, radio-frequency (RF) identification) is a kind of dirigibility application technology that is easy to control and be suitable for robotization control.Rfid system can freely be operated under the various rugged surroundings, can carry out the data integration of height, have higher security protection ability etc.The application of current RFID is quite extensive, mainly comprises logistics management, gate inhibition's control, automotive electronics etc., and new application such as E-VISA, food chain tracking etc. also are developed just continuously.
A typical R FID system generally comprises three parts: RFID label, label antenna and card reader.Wherein, the RFID label be mainly used in and card reader between carry out information interaction with each other identity of identification by the mode of radiofrequency signal, label antenna is used for receiving and sending radiofrequency signal.
The RFID label is divided into " active " label and " passive type " label.Wherein, the RFID label of active transmission radiofrequency signal is called " active " label, the RFID label that only carries out radiofrequency signal reflection or backscatter transmission is called " passive type " label.Usually, " active " labeling requirement reserve battery is supported the work of its card reader, for avoiding interference, " active " labeling requirement can receive and the signal of transmitting a plurality of frequencies, it is bigger to form complexity and power consumption, and the serviceable life of " active " label is directly related with its battery life, and promptly the life-span is limited, therefore, " active " label is generally big and cost is higher than " passive type " area." passive type " label will oppositely also can join relevant information its radiofrequency signal that reflects by decode-regulating from the radiofrequency signal that card reader transmits, need not the carrier energy that battery amplifies reverse signal, the energy that recovers radiofrequency signal by label antenna offers internal circuit work.
At present,, increased the cost of RFID label,, can promptly adopt on-chip antenna by label antenna being integrated on the chip of RFID label in order further to reduce the cost of label because external label antenna cost is 1/3rd of an entire RF ID label.Yet because the gain of on-chip antenna is lower, is difficult to recover enough electric energy and carries out work, greatly limited the operating distance of RFID label, make the distance of RFID label work in the millimeter magnitude for internal circuit.
Summary of the invention
In order to guarantee the operating distance of RFID label when reducing cost, the embodiment of the invention provides a kind of system and method for radio-frequency (RF) identification.Described technical scheme is as follows:
A kind of system of radio-frequency (RF) identification comprises card reader and label chip, integrated on-chip antenna on the described label chip, and described label chip also comprises:
Photoelectric conversion module is used to receive luminous energy, and described luminous energy is converted to electric energy is the power supply of described label chip.
Described card reader also comprises: light source;
Accordingly, the photoelectric conversion module of described label chip comprises:
Converting unit is used to receive the luminous energy of described light source, and described luminous energy is converted to electric energy, is described label chip power supply.
Described card reader also comprises:
Optical modulator module is used for that forward direction information is modulated into the forward light signal and sends to described photoelectric conversion module, and described forward direction information is the information that described card reader sends to described label chip;
Accordingly, the photoelectric conversion module of described label chip comprises:
Converting unit is used to receive the forward light signal that described optical modulator module sends, and is electric energy with the energy conversion of described forward light signal, is described label chip power supply;
Demodulating unit is used for demodulating described forward direction information from described forward light signal.
Described label chip also comprises:
Optical modulator module is used for the back is modulated into the back to light signal to information, and described back is sent to described card reader to light signal, and described back is the information that described list item chip sends to described card reader to information;
Accordingly, described card reader also comprises:
The optical modulator module is used to receive described back to light signal, and demodulates described back to information to light signal from described back.
A kind of method of radio-frequency (RF) identification, described method comprises:
Label chip is gathered luminous energy and is converted to electric energy;
Described label chip utilizes the mutual of the information of carrying out between described electric energy and the card reader and handles, finish and described card reader between identification.
Described label chip is gathered luminous energy and is converted to electric energy, specifically comprises:
Label chip receives the luminous energy of the light emitted of card reader, and described luminous energy is converted to electric energy.
Described label chip is gathered luminous energy and is converted to before the electric energy, and described method also comprises:
Card reader is modulated to the forward light signal with forward direction information and sends to described label chip, and described forward direction information is the information that described card reader sends to described label chip;
Accordingly, described label chip is gathered luminous energy and is converted to electric energy and specifically comprises:
Described label chip is the described forward direction information of demodulation from described forward light signal, and be electric energy with the energy conversion of described forward light signal.
The described mutual and processing that utilizes the information of carrying out between described electric energy and the card reader specifically comprises:
Described label chip is handled described forward direction information, obtains the back to information, and described back is the information that described label chip sends to described card reader to information;
Described back is modulated to the back to information sends to described card reader to light signal.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is:
By adopting the luminous energy modular converter to provide energy for label chip, making the on-chip antenna of label need not to obtain energy from on-chip antenna is the label energy supply, on-chip antenna only is used for information interaction, make that bigger operating distance becomes possibility between card reader and the label chip, overcome the restriction of on-chip antenna the label chip operating distance.
Description of drawings
Fig. 1 is the system architecture synoptic diagram of the radio-frequency (RF) identification that provides in the embodiment of the invention 1;
Fig. 2 is the method flow diagram of the radio-frequency (RF) identification that provides in the embodiment of the invention 1;
Fig. 3 is the system architecture synoptic diagram of the radio-frequency (RF) identification that provides in the embodiment of the invention 2;
Fig. 4 is the structure structural drawing of the core circuit module of the label chip that provides in the embodiment of the invention 2;
Fig. 5 is the method flow diagram of the radio-frequency (RF) identification that provides in the embodiment of the invention 2;
Fig. 6 is the system architecture synoptic diagram of the radio-frequency (RF) identification that provides in the embodiment of the invention 3;
Fig. 7 is the method flow diagram of the radio-frequency (RF) identification that provides in the embodiment of the invention 3;
Fig. 8 is the system architecture synoptic diagram of the radio-frequency (RF) identification that provides in the embodiment of the invention 4;
Fig. 9 is the method flow diagram of the radio-frequency (RF) identification that provides in the embodiment of the invention 4.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
In embodiments of the present invention, card reader transmission information is defined as forward communications to label chip, the information of transmission is forward direction information; Label chip transmission information is defined as the back to communication to card reader, and the information of transmission is that the back is to information; Forward direction information and back are referred to as interactive information to information.
Embodiment 1
Referring to Fig. 1, present embodiment provides a kind of system of radio-frequency (RF) identification, and this system comprises: card reader 101 and label chip 102;
Card reader 101 comprises: core circuit module 101A and antenna 101B;
Core circuit module 101A is used to handle the interactive information between card reader 101 and the label chip 102, finish and label chip 102 between identification;
Antenna 101B is used to transmit and receive the interactive information between card reader 101 and the label chip 102;
Label chip 102 comprises: on-chip antenna 102A, core circuit module 102B and luminous energy modular converter 102C;
On-chip antenna 102A is used to transmit and receive the interactive information between label chip 102 and the card reader 101;
Core circuit module 102B is used to handle the interactive information between label chip 102 and the card reader 101, finish and card reader 101 between identification;
Luminous energy modular converter 102C is used to gather luminous energy, and luminous energy is converted to electric energy, is label chip 102 power supplies.
The system of the radio-frequency (RF) identification that provides at present embodiment 1, present embodiment 1 also provides a kind of method of radio-frequency (RF) identification, and as shown in Figure 2, this method comprises:
201: label chip is gathered luminous energy, and luminous energy is converted to electric energy;
202: the electric energy of label chip utilization conversion realize and card reader between information interaction and processing, finish and card reader between identification.
The embodiment of the invention provides a kind of system and method for radio-frequency (RF) identification, by adopting the luminous energy modular converter to provide energy for label chip, making the on-chip antenna of label need not to obtain energy from on-chip antenna is the label energy supply, on-chip antenna only is used for information interaction, make that bigger operating distance becomes possibility between card reader and the label chip, overcome the restriction of on-chip antenna the label chip operating distance.
Embodiment 2
Referring to Fig. 3, the embodiment of the invention provides a kind of system of radio-frequency (RF) identification, and this system comprises: card reader 301 and label chip 302;
Card reader 301 comprises: light source 301A, core circuit module 301B and antenna 301C;
Light source 301A is used to label chip 302 that luminous energy is provided;
Core circuit module 301B is used to handle the interactive information between card reader 301 and the label chip 302;
Antenna 301C is used to transmit and receive the RF signal that carries interactive information between card reader 301 and the label chip 302;
Label chip 302 comprises: on-chip antenna 302A, core circuit module 302B and luminous energy modular converter 302C;
On-chip antenna 302A is used to receive and launch the RF signal that carries interactive information between card reader 301 and the label chip 302;
Core circuit module 302B is used to handle the interactive information between label chip 302 and the card reader 301;
Concrete core circuit module 302B can be as shown in Figure 4.
Luminous energy modular converter 302C comprises:
Receiving element is used to receive the luminous energy that the light source 301A of card reader 301 provides;
It is label chip 302 power supplies that converting unit, the luminous energy that is used for receiving are converted to electric energy.
Need to prove that luminous energy modular converter 302C can adopt photodiode collection luminous energy on the sheet,, obtain enough energy and offer label chip 302 work by increasing the conversion performance of light intensity or raising photodiode.If the electric energy that photodiode provides is not enough, can adopt charge pump to improve voltage.
The system of the radio-frequency (RF) identification that provides at present embodiment 2, present embodiment 2 also provides a kind of method of radio-frequency (RF) identification, and as shown in Figure 5, this method comprises:
501: the photoelectric conversion module of label chip receives the luminous energy of the light emitted of card reader, and luminous energy is converted to electric energy is the label chip power supply;
502: the on-chip antenna of label chip receives the radiofrequency signal of card reader by antenna transmission, and radiofrequency signal is reverted to electric signal, as voltage signal, current signal etc.;
503: the demodulator circuit of the core circuit module of label chip is demodulated into digital signal with the electric signal that on-chip antenna recovers;
504: the periodicity clock that the digital circuit of the core circuit module of label chip produces according to oscillator responds digital signal and replys, and obtains answer signal;
505: the modulation circuit of the core circuit module of label chip is modulated to radiofrequency signal with answer signal;
506: the on-chip antenna of label chip sends radiofrequency signal to card reader in the mode of backscattered modulation, finishes the identifying between card reader and the label chip.
The embodiment of the invention provides a kind of system and method for radio-frequency (RF) identification, by adopting the luminous energy modular converter to provide energy for label chip, making the on-chip antenna of label need not to obtain energy from on-chip antenna is the label energy supply, on-chip antenna only is used for information interaction, make that bigger operating distance becomes possibility between card reader and the label chip, overcome the restriction of on-chip antenna the label chip operating distance.
Embodiment 3
Referring to Fig. 6, the embodiment of the invention provides a kind of system of radio-frequency (RF) identification, and this system comprises: card reader 601 and label chip 602;
Card reader 601 comprises: optical modulator module 601A, core circuit module 601B and antenna 601C;
Optical modulator module 601A is used for that the forward direction information between card reader 601 and the label chip 602 is modulated to the forward light signal and sends to label chip 602;
Need to prove that optical modulator module 601A can realize that the electric current of modulation is converted into light modulated by photodiode by current-modulation and photodiode, the corresponding big light intensity of big electric current.
Core circuit module 601B is used to handle the interactive information between card reader 601 and the label chip 602;
Antenna 601C is used to receive label chip 602 and sends to carrying afterwards to the RF of information signal of card reader 601;
Label chip 602 comprises: luminous energy modular converter 602A, core circuit module 602B and on-chip antenna 602C;
Luminous energy modular converter 602A comprises:
Receiving element is used to receive the forward light signal that the optical modulator module 601A of card reader 601 sends;
Converting unit, the energy conversion that is used for the forward light signal that will receive are that electric energy is label chip 602 power supplies;
Demodulating unit is used for the forward light signal is carried out demodulation, reverts to the forward direction information of electric signal.
Wherein, luminous energy modular converter 602A can be by the electric current of sense photodiode under the different light intensity degree, and the modulated light signal of card reader is reverted to current signal etc.
Core circuit module 602B is used to handle the interactive information between label chip 602 and the card reader 601, obtains the back to information;
On-chip antenna 602C is used for that the back is modulated into the RF signal to information and sends card reader 601 to.
The system of the radio-frequency (RF) identification that provides at present embodiment 3, present embodiment 3 also provides a kind of method of radio-frequency (RF) identification, and as shown in Figure 7, this method comprises:
701: the optical modulator module of card reader is gathered luminous energy, and forward direction information is modulated into light signal sends to label chip;
702: the photoelectric conversion module of label chip receives the light signal that card reader sends, and the electric current of sense photodiode under different light intensity reverts to electric signal with the light signal that receives, and can be current signal, voltage signal etc.;
703: the core circuit module of label chip is demodulated into digital signal with the electric signal that recovers;
704: the digital circuit of the core circuit module of label chip responds digital signal and replys, and obtains answer signal;
705: the core circuit module of label chip is modulated to radiofrequency signal with answer signal;
706: on-chip antenna sends radiofrequency signal to card reader in the mode of backscattered modulation, finishes the identifying between card reader and the label chip.
The embodiment of the invention provides a kind of system of radio-frequency (RF) identification, by adopting the luminous energy modular converter to provide energy for label chip, making the on-chip antenna of label need not to obtain energy from on-chip antenna is the label energy supply, on-chip antenna only is used for information interaction, make that bigger operating distance becomes possibility between card reader and the label chip, overcome the restriction of on-chip antenna the label chip operating distance.And, on the mode of message transmission, having adopted the parallel mode of optical communication and RF electromagnetic telecommunication, the on-chip antenna of label chip only needs to carry out backscattered modulation transmission answer signal like this, and is lower to the requirement of on-chip antenna.
Embodiment 4
The embodiment of the invention provides a kind of system of radio-frequency (RF) identification, and the prerequisite of this system is the aliasing that can avoid effectively between the modulated light signal.Referring to Fig. 8, this system comprises: card reader 801 and label chip 802;
Card reader 801 comprises: optical modulator module 801A, optical modulator module 801B and core circuit module 801C;
Optical modulator module 801A is used for that information mutual between card reader 801 and the label chip 802 is modulated to light signal and sends to label chip 802;
Optical modulator module 801B is used to receive the light signal that carries interactive information that label chip 802 sends, and the light signal that receives is carried out demodulation;
Core circuit module 801C is used to handle mutual information between card reader 801 and the label chip 802;
Label chip 802 comprises: transform light energy module 802A, core circuit module 802B and optical modulator module 802C;
Transform light energy module 802A, be used to receive the light signal that the optical modulator module 801A of card reader 801 sends, the energy conversion of using the light signal that receives as label chip 802 power supplies, is carried out demodulation to light signal as electric energy simultaneously, and the modulated light signal of card reader 801 is reverted to electric signal.Wherein, luminous energy modular converter 802A can be by the electric current of sense photodiode under the different light intensity degree, and the modulated light signal of card reader is reverted to current signal etc.
Core circuit module 802B is used for obtaining answer signal according to electric signal;
Optical modulator module 802C is used for that answer signal is modulated to light signal and sends to card reader 801.
The system of the radio-frequency (RF) identification that provides at present embodiment 4, present embodiment 4 also provides a kind of method of radio-frequency (RF) identification, and as shown in Figure 9, this method comprises:
901: the optical modulator module of card reader is gathered luminous energy, and forward direction information is modulated into light signal sends to label chip;
902: the photoelectric conversion module of label chip receives the light signal that card reader sends, and the electric current of sense photodiode under different light intensity reverts to electric signal with the light signal that receives, and can be current signal, voltage signal etc.;
903: the core circuit module of label chip is demodulated into digital signal with the electric signal that recovers;
904: the digital circuit of the core circuit module of label chip responds digital signal and replys, and obtains answer signal;
905: the optical modulator module of label chip is modulated to light signal with answer signal and sends to card reader;
906: the optical modulator module of card reader receives the light signal of label chip transmission and is demodulated into electric signal;
907: the core circuit module of card reader is handled electric signal, obtains interactive information, finishes the identifying between card reader and the label chip.
The embodiment of the invention provides a kind of system of radio-frequency (RF) identification, by adopting the luminous energy modular converter to provide energy for label chip, making the on-chip antenna of label need not to obtain energy from on-chip antenna is the label energy supply, on-chip antenna only is used for information interaction, make that bigger operating distance becomes possibility between card reader and the label chip, overcome the restriction of on-chip antenna the label chip operating distance.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1, a kind of system of radio-frequency (RF) identification comprises card reader and label chip, and integrated on-chip antenna is characterized in that on the described label chip, and described label chip also comprises:
Photoelectric conversion module is used to receive luminous energy, and described luminous energy is converted to electric energy is the power supply of described label chip.
2, the system as claimed in claim 1 is characterized in that, described card reader also comprises: light source;
Accordingly, the photoelectric conversion module of described label chip comprises:
Converting unit is used to receive the luminous energy of described light source, and described luminous energy is converted to electric energy is described label chip power supply.
3, the system as claimed in claim 1 is characterized in that, described card reader also comprises:
Optical modulator module is used for that forward direction information is modulated into the forward light signal and sends to described photoelectric conversion module, and described forward direction information is the information that described card reader sends to described label chip;
Accordingly, the photoelectric conversion module of described label chip comprises:
Converting unit is used to receive the forward light signal that described optical modulator module sends, and is electric energy with the energy conversion of described forward light signal, is described label chip power supply;
Demodulating unit is used for demodulating described forward direction information from described forward light signal.
4, system as claimed in claim 3 is characterized in that, described label chip also comprises:
Optical modulator module is used for the back is modulated into the back to light signal to information, and described back is sent to described card reader to light signal, and described back is the information that described label chip sends to described card reader to information;
Accordingly, described card reader also comprises:
The optical modulator module is used to receive described back to light signal, and demodulates described back to information to light signal from described back.
5, a kind of method of radio-frequency (RF) identification is characterized in that, described method comprises:
Label chip is gathered luminous energy and is converted to electric energy;
Described label chip utilizes the mutual of the information of carrying out between described electric energy and the card reader and handles, finish and described card reader between identification.
6, method as claimed in claim 5 is characterized in that, described label chip is gathered luminous energy and is converted to electric energy, specifically comprises:
Label chip receives the luminous energy of the light emitted of card reader, and described luminous energy is converted to electric energy.
7, method as claimed in claim 5 is characterized in that, described label chip is gathered luminous energy and is converted to before the electric energy, and described method also comprises:
Card reader is modulated to the forward light signal with forward direction information and sends to described label chip, and described forward direction information is the information that described card reader sends to described label chip;
Accordingly, described label chip is gathered luminous energy and is converted to electric energy and specifically comprises:
Described label chip is the described forward direction information of demodulation from described forward light signal, and be electric energy with the energy conversion of described forward light signal.
8, method as claimed in claim 7 is characterized in that, described label chip utilizes the mutual of the information of carrying out between described electric energy and the card reader and handles, and specifically comprises:
Described label chip is handled described forward direction information, obtains the back to information, and described back is the information that described label chip sends to described card reader to information;
Described back is modulated to the back to information sends to described card reader to light signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910082558A CN101533460A (en) | 2009-04-24 | 2009-04-24 | System and method of radio frequency identification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910082558A CN101533460A (en) | 2009-04-24 | 2009-04-24 | System and method of radio frequency identification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101533460A true CN101533460A (en) | 2009-09-16 |
Family
ID=41104046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910082558A Pending CN101533460A (en) | 2009-04-24 | 2009-04-24 | System and method of radio frequency identification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101533460A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102063942A (en) * | 2010-10-29 | 2011-05-18 | 北京工业大学 | Trusted wireless storage equipment for wireless power supply and application method thereof |
| CN103593698A (en) * | 2008-04-07 | 2014-02-19 | 阿利安科技有限公司 | Subset selection of RFID tags using light |
| 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 |
| CN104036316A (en) * | 2014-06-09 | 2014-09-10 | 杭州沃朴物联科技有限公司 | Ultra-low power consumption photoactivatable electronic tag and card reader system and signal processing method thereof |
| CN104866878A (en) * | 2015-05-21 | 2015-08-26 | 天津大学 | coherent light coding identification system |
| CN105095929A (en) * | 2014-05-23 | 2015-11-25 | 中兴通讯股份有限公司 | Passive RFID tag, optical RF read-write head, and RFID system |
| CN105095928A (en) * | 2014-05-23 | 2015-11-25 | 中兴通讯股份有限公司 | Passive RFID tag, RF read-write head, and RFID system |
| WO2015176412A1 (en) * | 2014-05-19 | 2015-11-26 | 中兴通讯股份有限公司 | Passive optical tag, optical read/write device and intelligent optical distribution network |
| CN105491718A (en) * | 2015-12-28 | 2016-04-13 | 生迪智慧科技有限公司 | Illuminating apparatus, motor vehicle, and motor vehicle identifying apparatus, system and method |
| WO2021164024A1 (en) * | 2020-02-21 | 2021-08-26 | Oppo广东移动通信有限公司 | Item positioning method, terminal, passive rfid tag, and rfid card reader |
-
2009
- 2009-04-24 CN CN200910082558A patent/CN101533460A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103593698A (en) * | 2008-04-07 | 2014-02-19 | 阿利安科技有限公司 | Subset selection of RFID tags using light |
| CN103593698B (en) * | 2008-04-07 | 2017-05-03 | 瑞章科技有限公司 | Subset selection of RFID tags using light |
| CN102063942A (en) * | 2010-10-29 | 2011-05-18 | 北京工业大学 | Trusted wireless storage equipment for wireless power supply and application method thereof |
| CN102063942B (en) * | 2010-10-29 | 2013-12-04 | 北京工业大学 | Trusted wireless storage equipment for wireless power supply and application method thereof |
| 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 |
| WO2015176412A1 (en) * | 2014-05-19 | 2015-11-26 | 中兴通讯股份有限公司 | Passive optical tag, optical read/write device and intelligent optical distribution network |
| CN105095929A (en) * | 2014-05-23 | 2015-11-25 | 中兴通讯股份有限公司 | Passive RFID tag, optical RF read-write head, and RFID system |
| CN105095928A (en) * | 2014-05-23 | 2015-11-25 | 中兴通讯股份有限公司 | Passive RFID tag, RF read-write head, and RFID system |
| WO2015176479A1 (en) * | 2014-05-23 | 2015-11-26 | 中兴通讯股份有限公司 | Passive radio frequency identification tag, optical radio frequency read/write head and radio frequency identification system |
| WO2015176514A1 (en) * | 2014-05-23 | 2015-11-26 | 中兴通讯股份有限公司 | Passive radio frequency identification tag, radio frequency read/write head and radio frequency identification system |
| CN104036316A (en) * | 2014-06-09 | 2014-09-10 | 杭州沃朴物联科技有限公司 | Ultra-low power consumption photoactivatable electronic tag and card reader system and signal processing method thereof |
| CN104036316B (en) * | 2014-06-09 | 2017-05-17 | 杭州沃朴物联科技有限公司 | Ultra-low power consumption photoactivatable electronic tag and card reader system and signal processing method thereof |
| CN104866878A (en) * | 2015-05-21 | 2015-08-26 | 天津大学 | coherent light coding identification system |
| CN105491718A (en) * | 2015-12-28 | 2016-04-13 | 生迪智慧科技有限公司 | Illuminating apparatus, motor vehicle, and motor vehicle identifying apparatus, system and method |
| WO2021164024A1 (en) * | 2020-02-21 | 2021-08-26 | Oppo广东移动通信有限公司 | Item positioning method, terminal, passive rfid tag, and rfid card reader |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101533460A (en) | System and method of radio frequency identification | |
| CN101868927B (en) | Near field radio frequency communication system | |
| CN101296007B (en) | Transmitter and wireless system using the same | |
| Liu et al. | Taxonomy and challenges of the integration of RFID and wireless sensor networks | |
| US20160134370A1 (en) | Visible Light Power-Carrying Communication System And Method | |
| US20060103533A1 (en) | Radio frequency tag and reader with asymmetric communication bandwidth | |
| EP1545069A1 (en) | Remote polling and control system | |
| CN201522715U (en) | Radio frequency identification reader | |
| CN1697435A (en) | Radio communication system, device and method | |
| CN1666455A (en) | Bluetooth RF based RF-tag read/write station | |
| Muratkar et al. | Battery-less internet of things–A survey | |
| CN101888399A (en) | Internet of things system based on mobile communication network | |
| CN105610449A (en) | Dual-mode radio frequency transceiving architecture | |
| CN100339861C (en) | Interrogator of moving body identification device | |
| Wang et al. | Modeling of UHF voltage multiplier for radio‐triggered wake‐up circuits | |
| CN104967487A (en) | In-band unvarnished transmission monitoring signal optical module based on frequency modulation | |
| CN110166136A (en) | The vector millimeter wave generator of light intensity modulator is recommended based on both arms | |
| Mir et al. | PassiveLiFi: Rethinking LiFi for low-power and long range RF backscatter | |
| CN105089373A (en) | Intelligent logistic electronic lock system and locking and unlocking method thereof | |
| CN104408501A (en) | Visible light passive optical charging tag and reader-writer device | |
| US10867137B2 (en) | Passive sensor system powered by wireless energy transmission | |
| CN105279544B (en) | It is a kind of to utilize the passive radio-frequency identification labeled of visible light communication | |
| CN109951200A (en) | Electronic equipment and electronic system | |
| CN210745124U (en) | Radio frequency front end of passive electronic tag chip | |
| CN115336186B (en) | Wireless communication method, device, equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090916 |