CN106960169A - Reader, RFID label tag and RFID identification system - Google Patents

Reader, RFID label tag and RFID identification system Download PDF

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Publication number
CN106960169A
CN106960169A CN201710253517.5A CN201710253517A CN106960169A CN 106960169 A CN106960169 A CN 106960169A CN 201710253517 A CN201710253517 A CN 201710253517A CN 106960169 A CN106960169 A CN 106960169A
Authority
CN
China
Prior art keywords
reader
antenna
label
rfid
chip
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
Application number
CN201710253517.5A
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Chinese (zh)
Inventor
陆义潮
陆晓青
Original Assignee
陆义潮
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 陆义潮 filed Critical 陆义潮
Priority to CN201710253517.5A priority Critical patent/CN106960169A/en
Publication of CN106960169A publication Critical patent/CN106960169A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • G06K19/0724Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs the arrangement being a circuit for communicating at a plurality of frequencies, e.g. for managing time multiplexed communication over at least two antennas of different types
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves

Abstract

The present invention provides a kind of reader, and the reader includes reader body, at least one first reader antenna and at least one second reader antenna.At least one first reader antenna is electrically connected with reader chip module, and the first reader antenna is coupled the label antenna of RFID label tag side by electromagnetic field, energy is provided for the work of RFID label chip.At least one second reader antenna is arranged at the side of at least one the first reader antenna and is electrically connected with reader chip module, second reader antenna couples the label antenna of RFID label tag side, the load modulation variation of the label antenna of detection RFID label tag side by electromagnetic field.

Description

Reader, RFID label tag and RFID identification system
Technical field
The present invention relates to technical field of RFID, and more particularly to a kind of reader, RFID label tag and RFID identifications System.
Background technology
REID be it is a kind of recognize specific objective by radio signals and read and write the communication technology of related data, The characteristics of its is maximum is contactless connection.With continuing to develop for this technology, it has turned into current most by of concern One of hot technology, its application has gradually infiltrated into the sphere of life of people, logistics management and the tracking interaction of such as product Business.
The problem that current RFID system is present is, with the continuous improvement of people's living standard, to chip functions Requirement more and more higher, chip integrated circuit function is complicated, and integrated level is improved, and clock frequency is improved, so as to cause the energy of chip Consumption increase, but the energy that reader is provided can not be improved again by the strict limitation of radio supervision department, this is resulted in The identification Distance Shortened of RFID identification system is recognized, so as to greatly limit the use scope of RFID system.In addition, in high frequency model Enclose interior existing RFID identifications and be orientation identification, it is difficult to the normal work in the indefinite occasion in direction.
The content of the invention
The present invention in order to overcome the identification of existing RFID identification system apart from it is short the problem of there is provided one kind have it is long read away from From reader, RFID label tag and RFID identification system.
To achieve these goals, the present invention provides a kind of reader, the reader include reader body, at least one First reader antenna and at least one second reader antenna.At least one first reader antenna is electrically connected with reader core Piece module, the first reader antenna couples the label antenna of RFID label tag side by electromagnetic field, is the work of RFID label chip Energy is provided.At least one second reader antenna is arranged at the side of at least one the first reader antenna and electric connection is read Device chip module is read, the second reader antenna couples the label antenna of RFID label tag side, detection RFID label tag side by electromagnetic field Label antenna load change.
In one embodiment of the invention, reader includes multiple first reader antennas and multiple second reader antennas, Multiple first reader antennas and multiple second reader antennas are arranged in reader body and along reader chip module Surrounding is set.
In one embodiment of the invention, the first reader antenna and the second reader antenna have different transmission frequencies.
In one embodiment of the invention, the structure of the first reader antenna and the second reader antenna is identical, including many Individual antenna body and the multiple electrical connectors being connected with multiple antenna bodies, reader chip module is by controlling multiple be electrically connected Fitting connects multiple antenna bodies.
In one embodiment of the invention, the second reader antenna is set with reader body separate type.
Corresponding with above-mentioned reader, the present invention also provides a kind of RFID label tag being matched therewith, and the label includes Label body and label antenna.Label body includes label chip.Label antenna be electrically connected with label chip, label antenna with extremely Few first reader antenna electromagnetic field coupling, obtains the energy of at least one first reader antenna generation, is formed as mark The voltage of chip power supply is signed, and label antenna electromagnetic field couples at least one second reader antenna and is loaded to change and passes through magnetic Field maps to the second reader antenna.
In one embodiment of the invention, label antenna includes at least one first label day being electrically connected with label chip Line and at least one second label antenna, the first label antenna electromagnetic field couple the first reader antenna, the second antenna tag coupling Connect the second reader antenna.
In one embodiment of the invention, label antenna include multiple antenna bodies and be connected with multiple antenna bodies it is many Individual electrical connector, label chip connects multiple antenna bodies by controlling multiple electrical connectors.
Another aspect of the present invention also provides a kind of RFID identification system, the identifying system include any of the above-described reader with And any of the above-described RFID label tag.
In summary, reader, RFID label tag and the RFID identification system that the present invention is provided have compared to prior art Advantages below:
Label chip antenna in reader being divided into RFID label tag provides the first reader day of work capacity Second reader antenna of line and load modulation variation for the label antenna that detects RFID label tag side, the energy of RFID label tag Obtain and information exchange is taken using different reader antennas.Because the second reader antenna for label chip without providing Energy, its energy produced is completely used for information exchange, therefore it can be with very long reading distance and reading sensitivity.Enter One step, because without providing energy for label chip, the volume of the second reader antenna can be made very small, it might even be possible to from Separate in hand-held mode or set on the robotic arm so as to realize the RFID label tag of concealed location in reader body Identification.
In addition, both settable along reader when the data of the first reader antenna and the second reader-tag are multiple Arranged around chip module in petal-shaped, when sensing RFID label tag, the magnetic induction intensity in which direction is big, it is possible to leaning on First reader-tag and the second reader-tag in this nearly direction are operated, so as to greatly improve the sensitive of reader Degree.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, And coordinate accompanying drawing, it is described in detail below.
Brief description of the drawings
Fig. 1 show the structural representation of the reader of the offer of the embodiment of the present invention one.
Fig. 2 show the structural representation of the RFID identification system of the offer of the embodiment of the present invention one.
Fig. 3 show in Fig. 2 the structural representation of the label antenna in RFID label tag.
Fig. 4 show in another embodiment of the present invention multiple first reader antennas and multiple second reader antennas with readding Read the connection diagram between device chip module.
Fig. 5 show the structural representation of the RFID identification system of the offer of the embodiment of the present invention two.
Fig. 6 show the structural representation of the RFID identification system of the offer of the embodiment of the present invention three.
Embodiment
In existing RFID identification system reader antenna and label antenna through magnetic coupling come to be embodied as label chip The interaction of data, the i.e. acquisition of label chip energy and the interaction of information is carried out while work capacity is provided to be read by same Device antenna is undertaken.And the energy of reader antenna is due to the strict limitation by radio supervision department, therefore formed existing RFID identification system is recognized apart from this short problem.
In view of this, the present invention provide a kind of interaction by the acquisition of label chip energy and information using different antennae come The reader undertaken.As shown in figure 1, the reader 10 includes reader body 11, at least one first reader antenna 12 and At least one second reader antenna 13.Reader body 1 includes reader chip module 111.At least one first reader Antenna 12 is electrically connected with reader chip module 111, and the first reader antenna 2 couples the label of RFID label tag side by electromagnetic field Antenna, energy is provided for the work of RFID label chip.At least one second reader antenna 13 be arranged at least one first The side of reader antenna 12 and electric connection reader chip module 111, the second reader antenna 13 is coupled by electromagnetic field Load modulation variation on the label antenna of RFID label tag side, the label antenna of detection RFID label tag side.
As shown in figure 1, in the present embodiment, reader 10 includes one first reading being arranged in reader body 1 Device antenna 12 and second reader antenna 13.However, the present invention is to the first reader antenna 12 and the second reader antenna 13 quantity and position are not limited in any way.In other embodiments, as shown in figure 4, settable reader 10 includes being arranged at In reader body 11 and multiple first reader antennas 12 set along around reader chip module 111 and multiple second Reader antenna 13.It is preferred that, multiple first reader antennas 12 and multiple second reader antennas 13 uniformly alternating are set It is arranged on around reader chip module 111.The setting make it that the first reader antenna 12 and the second reader antenna 13 are in Petal-shaped is centered around around reader chip module 111, when reading RFID label tag, and the magnetic induction intensity in which direction is big just Worked with the reader antenna 13 close to this direction, so as to greatly improve the sensitivity of reader reading, also improve system Applicability.In other embodiments, reader 10 also can be set and comes including multiple first reader antennas 12 for label chip Energy is provided, and orientation is realized with second reader antenna 13 and is read.
In the present embodiment, it is preferred that set the first reader antenna 12 and the second reader antenna 13 to be coil day Line.However, the present invention is not limited in any way to this.In other embodiments, settable first reader antenna 12 and second is read Read device antenna 13 and be any of dipole antenna, monopole antenna or other antennas, or the first reader antenna 12 It is both any groups in coil antenna, dipole antenna, monopole antenna and other antennas with the second reader antenna 13 Close;If similar first reader antenna 12 is coil antenna, the combination as dipole antenna of the second reader antenna 13.
To realize the maximization read distance and provide energy, in the present embodiment, the He of the first reader antenna 12 is set Second reader antenna 13 has different transmission frequencies.Can be by setting the first reader antenna 12 and the in practical operation Two reader antennas 13 are using different types of antenna or both is using identical antenna type but specific size is different come real It is existing.However, the present invention is not limited in any way to this.In other embodiments, settable first reader antenna 12 and second is read Read device antenna 13 and use identical transmission frequency.
Corresponding with above-mentioned reader, the present invention also provides a kind of RFID label tag 20.The RFID label tag includes label body 21 With label antenna 22.Label body 21 includes label chip 211.Label antenna 22 is electrically connected with label chip 211, label antenna 22 couple with least one electromagnetic field of the first reader antenna 12, obtain the energy of at least one first reader antenna 12 radiation Amount, is formed as the voltage of the power supply of label chip 211, and the electromagnetic field of label antenna 22 couples at least one second reader antenna 13 Loaded modulation variation and pass through magnetic field map to the second reader antenna 13.Specifically, in high frequency field, label antenna 22 The supply voltage of label chip 211 is formed by sensing the magnetic field of at least one first reader antenna 12 generation;And super High frequency and superfrequency field, label antenna 22 absorb the power that reader antenna is launched, rectified to be carried afterwards for label chip 211 Voltage supplied.
Reader 10 and RFID label tag 20 constitute RFID identification system, as shown in Figure 2.RFID knowledges are will be described in detail below The operation principle of other system.
Alternating current is flowed through in the first reader antenna 12 in high frequency field, reader 10 and produces magnetic field, part magnetic The line of force passes through the label antenna 22 of the certain distance of the first reader antenna of distance 12.According to electromagnetic induction principle, through label day The magnetic line of force of line 22 produces voltage by sensing in label antenna 22.After the voltage is rectified, i.e., needed for generation label chip The DC voltage wanted, realizes that the first reader antenna 12 is powered for label chip 211.At the same time, the second reader antenna 13 The modulated signal of the consecutive variations exported to reader chip module 111 quantifies by sampling, is gone after coding with corresponding code character The a certain parameter of high-frequency carrier signal is controlled, it is changed with code character and is changed, this signal is through electromagnetic field couples by label day Acquired in line 22, then complete signal from reader 10 to the transmission of RFID label tag 20.Similarly, negative on label antenna 22 Carry modulation variation to be mapped on the second reader antenna 13 by electromagnetic field in the form of a voltage, realize signal from RFID label tag 20 To the transmission of reader 10, that is, realize the signal transmission of whole RFID identification system.
In hyperfrequency and superfrequency field, the outside transmission power of the first reader antenna 12, partial dispersion is into air, portion Divide and absorbed by label antenna, the operating voltage of label chip 211 is formed after the power of absorption is rectified.Simultaneously, second read Read device antenna 13 and carry out certain modulation to transmission signal according to relevant standard, label antenna is by the modulation variation of load with electricity The version of pressure is mapped on the second reader antenna 13 by electromagnetic field, that is, realizes that the signal of whole RFID identification system is passed It is defeated.
Because the energy produced by the second reader antenna 13 is used only to detect the load modulation variation of label antenna 22, And without making label chip 211 work, therefore under identical power, compared to traditional reader and RFID identification system, sheet Reader, RFID label tag and the RFID identification system that embodiment is provided can obtain the identification of longer distance, realize remote inspection Survey.
In the present embodiment, label antenna 22 is coil antenna.However, the present invention is not limited in any way to this.In other In embodiment, label antenna 22 can be any of dipole antenna, monopole antenna or other types of antenna.
Further, in the present embodiment, as shown in figure 3, setting label antenna 22 includes antenna body 1 and multiple antennas Multiple electrical connectors 2 that body 1 is connected, label chip 211 is by controlling multiple electrical connectors 2 to connect multiple antenna bodies 1.And the first reader-tag 12 and the second reader-tag 13 then use the antenna structure of integral type.However, the present invention is to this It is not limited in any way.In other embodiments, the first reader-tag 12 and the second reader-tag 13 can be configured as such as Fig. 3 Shown structure.
The antenna body more than 1 of connection, antenna can be obtained energy will be bigger, therefore, in actual use, label core Piece 211 can control the quantity of the label body 1 of connection by controlling the break-make of electrical connector 2.In the present embodiment, by The switching device of electrical connector is provided as in the tap of antenna body 1 to realize connection.However, the present invention does not make any to this Limit.In the present embodiment, label chip 211 is entered with binary data coding Signal-controlled switch device, antenna body 1 by two The low and high level of coded data signal processed changes and is switched on or disconnects, and the load change on label antenna 22 passes through label antenna 22 are mapped on the second reader-tag 13, the voltage of the second reader-tag 13 is also changed by this rule.The voltage passes through After the relative decoding processes such as the demodulation filtering of reader chip module 111, data just enter reader 10.
In the reader that the present embodiment is provided, because the second reader antenna 13 is only used for signal transmission, can have smaller Energy, therefore its volume can be made small and be integrated in reader body 1, but independently be set with the first reader antenna 12 Put.However, the present invention is not limited in any way to the specific set-up mode of the second reader antenna 13.
Embodiment two
The present embodiment and embodiment one and its change are essentially identical, and difference is:The RFID label tag 20 that the present embodiment is provided Middle label antenna 22 includes the first label antenna 221 and the second label antenna 222 being electrically connected with label chip 211.Specifically As shown in Figure 5.The RFID label tag 20 and RFID identification system provided below in conjunction with reader 10 the present embodiment is made specifically It is bright.
It is identical with the reader in embodiment one, flowed through in the first reader antenna 12 in high frequency field reader 10 Alternating current produces magnetic field, and the part magnetic line of force passes through the first label antenna 221 of the certain distance of the first reader antenna of distance 12, It is rectified rear for label core through the sensed generation voltage in the first label antenna 221 of the magnetic line of force of the first label antenna 221 Piece 211 is powered.At the same time, the modulation letter for the consecutive variations that the second reader antenna 13 exports reader chip module 111 Number quantify by sampling, gone after coding to control a certain parameter of high-frequency carrier signal with corresponding code character, it is changed with code character And change, this signal completed through electromagnetic field couples acquired in the second label antenna 222, then signal from reader 10 to The transmission of RFID label tag 20.Load modulation variation on RFID label tag side, the second label antenna 222 is reflected in the form of a voltage It is mapped in the second reader antenna 13, it is achieved thereby that the data transmission between reader 10 and RFID label tag 20.
In hyperfrequency and superfrequency field, the outside transmission power of the first reader antenna 12, partial dispersion is into air, portion Divide and absorbed by the first label antenna 221, the operating voltage of label chip 211 is formed after the power of absorption is rectified.Simultaneously, Second reader antenna 13 (in hyperfrequency and superfrequency field, has difference according to relevant standard in different application standards Modulation system) certain modulation is carried out to transmission signal, the second label antenna 222 is by the modulation variation of load with the change of voltage Change form is mapped on the second reader antenna 13 by electromagnetic field, that is, realizes the signal transmission of whole RFID identification system.
In the RFID identification system that the present embodiment is provided, the first reader antenna 12 and the electromagnetic field of the first label antenna 221 Coupling, the second reader antenna 13 and the electromagnetic field of the second label antenna 222 are coupled.In the present embodiment, the first reader antenna 12nd, the second reader antenna 13, the first label antenna 221 and the second label antenna 222 are coil antenna, but settable the One reader antenna 12 and the second reader antenna 13 have different antenna sizes, the first label antenna 221 and the second label Antenna 222 have different antenna sizes come cause the energy of label chip 211 acquisition and data transmission in different frequencies Lower to complete, this not only substantially increases identification distance, while also improving the adaptability of system.However, the present invention does not make to this It is any to limit.In other embodiments, settable first reader antenna 12 and the second reader antenna 13 are dipole day Any of line, monopole antenna or other antennas, or the first reader antenna 12 and the second reader antenna 13 are line Combination both any in antenna, dipole antenna, monopole antenna and other antennas is enclosed to cause both with different Transmission frequency;Such as similar first reader antenna 12 is coil antenna, and the second reader antenna 13 is as dipole antenna Combination.Or in other embodiments, the acquisition of settable energy and the transmission of data have identical transmission frequency.
Embodiment three
The present embodiment and embodiment one and its change are essentially identical, and difference is:Second reader day in reader 10 Line 13 is arranged on outside reader body 11, and both separate types are set.
In reader 10, the second reader antenna 13 is only used for transferring without for data and powered for label chip 211, Therefore its volume can be made very small, and due to the independence of the first reader antenna 12 and the second reader antenna 13, therefore can Second read antenna 13 is arranged on to the outside of reader body 11.The setting is advantageous in that, can will be used as data transfer Second read antenna 13 is set in hand-held shape so as to adapt to different applied environments, and the cash register and logistics of such as supermarket are scanned, or Second read antenna 13 is arranged on mechanical arm the scanning of the label to be pointed to concealed location by person, greatly improves reader The scope of application.
In summary, reader, RFID label tag and the RFID identification system that the present invention is provided have compared to prior art Advantages below:
Label chip antenna in reader being divided into RFID label tag provides the first reader day of work capacity Line and for the second reader antenna of the load modulation variation for detecting RFID label tag side label antenna, the energy of RFID label tag is obtained Take and taken with information exchange using different reader antennas.Because the second reader antenna for label chip without providing energy Amount, its energy produced is completely used for information exchange, therefore it can be with very long reading distance and reading sensitivity.Enter one Step, because without for label chip provide energy, the volume of the second reader antenna can be made very small, it might even be possible to from readding Read to separate in device body in hand-held mode or set on the robotic arm so as to realize the knowledge of the RFID label tag of concealed location Not.
In addition, both settable along reader when the data of the first reader antenna and the second reader-tag are multiple Arranged around chip module in petal-shaped, when sensing RFID label tag, the magnetic induction intensity in which direction is big, it is possible to leaning on First reader-tag and the second reader-tag in this nearly direction are operated, so as to greatly improve the sensitive of reader Degree.
It is any to know this skill although the present invention is disclosed above by preferred embodiment, but is not limited to the present invention Skill person, without departing from the spirit and scope of the present invention, can make a little change and retouching, therefore protection scope of the present invention is worked as It is defined depending on claims scope claimed.

Claims (9)

1. a kind of reader, it is characterised in that for reading RFID label tag, the reader includes:
Reader body, including reader chip module;
At least one first reader antenna, is electrically connected with the reader chip module, and the first reader antenna passes through electromagnetism The label antenna of field coupling RFID label tag side, energy is provided for the work of RFID label chip;
At least one second reader antenna, is arranged at the side of at least one first reader antenna and is electrically connected with institute Reader chip module is stated, second reader antenna couples the label antenna of RFID label tag side, detection by electromagnetic field The load modulation variation of the label antenna of RFID label tag side.
2. reader according to claim 1, it is characterised in that the reader include multiple first reader antennas and Multiple second reader antennas, multiple first reader antennas and multiple second reader antennas are arranged at the reader body It is interior and set along around reader chip module.
3. reader according to claim 2, it is characterised in that first reader antenna and the second reader antenna With different transmission frequencies.
4. reader according to claim 1, it is characterised in that first reader antenna and the second reader antenna Structure it is identical, the multiple electrical connectors being connected including multiple antenna bodies and with the multiple antenna body, reader Chip module connects multiple antenna bodies by controlling multiple electrical connectors.
5. reader according to claim 1, it is characterised in that second reader antenna and the reader body Separate type is set.
6. the RFID label tag that a kind of reader with described in claim 1 is engaged, it is characterised in that including:
Label body, including label chip;
Label antenna, is electrically connected with the label chip, the label antenna and at least one first reader antenna electromagnetic field Coupling, obtains the energy of at least one first reader antenna generation, is formed as the voltage that label chip is powered, and the label Electromagnetic Fields of Antenna, which couples at least one second reader antenna and loaded, to be changed by magnetic field map to the second reader antenna.
7. RFID label tag according to claim 6, it is characterised in that the label antenna includes electrically connecting with label chip The label antenna of at least one connect first and at least one second label antenna, the first label antenna electromagnetic field coupling first are read Device antenna, the second antenna tag couples the second reader antenna.
8. RFID label tag according to claim 6, it is characterised in that the label antenna include multiple antenna bodies and with Multiple electrical connectors that the multiple antenna body is connected, label chip connects multiple days by controlling multiple electrical connectors Line body.
9. a kind of RFID identification system, it is characterised in that including:
Reader described in claim any one of 1-5;And
RFID label tag described in claim any one of 6-8.
CN201710253517.5A 2017-04-18 2017-04-18 Reader, RFID label tag and RFID identification system Pending CN106960169A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710253517.5A CN106960169A (en) 2017-04-18 2017-04-18 Reader, RFID label tag and RFID identification system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710253517.5A CN106960169A (en) 2017-04-18 2017-04-18 Reader, RFID label tag and RFID identification system

Publications (1)

Publication Number Publication Date
CN106960169A true CN106960169A (en) 2017-07-18

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Application Number Title Priority Date Filing Date
CN201710253517.5A Pending CN106960169A (en) 2017-04-18 2017-04-18 Reader, RFID label tag and RFID identification system

Country Status (1)

Country Link
CN (1) CN106960169A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108051657A (en) * 2017-12-19 2018-05-18 北京计算机技术及应用研究所 A kind of radio field intensity detecting system based on UWB and UHF-RFID
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108051657A (en) * 2017-12-19 2018-05-18 北京计算机技术及应用研究所 A kind of radio field intensity detecting system based on UWB and UHF-RFID
CN108051657B (en) * 2017-12-19 2020-06-16 北京计算机技术及应用研究所 Radio frequency field intensity detection system based on UWB and UHF-RFID
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

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