CN206711111U - Reader, RFID label tag and RFID identification system - Google Patents
Reader, RFID label tag and RFID identification system Download PDFInfo
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- CN206711111U CN206711111U CN201720407505.9U CN201720407505U CN206711111U CN 206711111 U CN206711111 U CN 206711111U CN 201720407505 U CN201720407505 U CN 201720407505U CN 206711111 U CN206711111 U CN 206711111U
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- reader
- antenna
- label
- rfid
- chip
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Abstract
The utility model 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 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
Technical field
It the utility model is related to technical field of RFID, and more particularly to a kind of reader, RFID label tag and RFID
Identifying system.
Background technology
REID be it is a kind of identify 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 the continuous development of this technology, it has turned into current most by of concern
One of hot technology, its application have gradually infiltrated into the sphere of life of people, logistics management and the tracking interaction of such as product
Business.
A problem is existing for current RFID system, with the continuous improvement of people's living standards, to chip functions
Requirement more and more higher, chip integrated circuit function is complicated, and integrated level improves, and clock frequency improves, so as to cause the energy of chip
Consumption increase, but the energy that reader provides 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 identified, so as to greatly limit the use range of RFID system.In addition, in high frequency model
It is orientation identification to enclose interior existing RFID identification, and it is difficult to the normal work in the indefinite occasion in direction.
Utility model content
The utility model in order to overcome the identification of existing RFID identification system apart from it is short the problem of, there is provided one kind has long read
Take reader, RFID label tag and the RFID identification system of distance.
To achieve these goals, the utility model provides a kind of reader, and the reader includes reader body, at least
One the first reader antenna and at least one second reader antenna.At least one first reader antenna, which is electrically connected with, to be read
Device chip module, the first reader antenna couple the label antenna of RFID label tag side by electromagnetic field, are RFID label chip
Work provides energy.At least one second reader antenna is arranged at the side of at least one first reader antenna and electrically connected
Reader chip module is connect, the second reader antenna couples the label antenna of RFID label tag side, detection RFID marks by electromagnetic field
Sign the load change of the label antenna of side.
In the embodiment of the utility model one, reader includes multiple first reader antennas and multiple second reader days
Line, multiple first reader antennas and multiple second reader antennas are arranged in reader body and along reader chip modules
Around set.
In the embodiment of the utility model one, the first reader antenna and the second reader antenna have different transmitting pins
Rate.
In the embodiment of the utility model one, the structure of the first reader antenna and the second reader antenna is identical, wraps
Multiple antenna bodies and the multiple electrical connectors being connected with multiple antenna bodies are included, reader chip module is multiple by controlling
Electrical connector connects multiple antenna bodies.
In the embodiment of the utility model one, the second reader antenna is set with reader body separate type.
Corresponding with above-mentioned reader, the utility model also provides a kind of RFID label tag being matched therewith, the label
Including label body and label antenna.Label body includes label chip.Label antenna is electrically connected with label chip, label antenna
Coupled with least one first reader antenna electromagnetic field, obtain energy caused by least one first reader antenna, formed
The voltage powered for label chip, and label antenna electromagnetic field couples at least one second reader antenna and is loaded to change and leads to
Magnetic field map is crossed to the second reader antenna.
In the embodiment of the utility model one, label antenna includes at least one first mark being electrically connected with label chip
Antenna and at least one second label antenna are signed, the first label antenna electromagnetic field couples the first reader antenna, the second antenna mark
Label the second reader antenna of coupling.
In the embodiment of the utility model one, label antenna includes multiple antenna bodies and is connected with multiple antenna bodies
Multiple electrical connectors, label chip connects multiple antenna bodies by controlling multiple electrical connectors.
On the other hand the utility model also provides a kind of RFID identification system, the identifying system is read including any of the above-described
Device and any of the above-described RFID label tag.
In summary, reader provided by the utility model, RFID label tag and RFID identification system be compared to prior art,
With 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 the load modulation variation of line and the label antenna for detecting 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 caused energy is completely used for information exchange, therefore it can have very long reading distance and read 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 a manner of hand-held or set on the robotic arm so as to realize the RFID label tag of concealed location in reader body
Identification.
It is 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 cited below particularly preferably real for above and other objects, features and advantages of the present utility model can be become apparent
Example is applied, and coordinates accompanying drawing, is described in detail below.
Brief description of the drawings
Fig. 1 show the structural representation of the reader of the offer of the utility model embodiment one.
Fig. 2 show the structural representation of the RFID identification system of the offer of the utility model embodiment one.
Fig. 3 show in Fig. 2 the structural representation of the label antenna in RFID label tag.
Fig. 4 show multiple first reader antennas and multiple second reader antennas in another embodiment of the utility model
With the connection diagram between reader chip module.
Fig. 5 show the structural representation of the RFID identification system of the offer of the utility model embodiment two.
Fig. 6 show the structural representation of the RFID identification system of the offer of the utility model embodiment 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 is carried out while work capacity is provided, i.e. the acquisition of label chip energy and the interaction of information is by same reading
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 identified apart from this short problem.
In view of this, the utility model provides a kind of interaction by the acquisition of label chip energy and information and used not on the same day
Line is come the reader that undertakes.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 reads
Read device antenna 12 and be electrically connected with reader chip module 111, the first reader antenna 2 couples RFID label tag side by electromagnetic field
Label antenna, energy is provided for the work of RFID label chip.At least one second reader antenna 13 is arranged at least one
The side of first reader antenna 12 and electric connection reader chip module 111, the second reader antenna 13 passes through electromagnetic field coupling
The label antenna of RFID label tag side is connect, detects the load modulation variation on the label antenna of 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 utility model is to the first reader antenna 12 and the second reader
The quantity of antenna 13 and position are not limited in any way.In other embodiments, as shown in figure 4, settable reader 10 includes setting
It is placed in reader body 11 and along multiple first reader antennas 12 provided around reader chip module 111 and multiple
Second reader antenna 13.Preferably, set multiple first reader antennas 12 and multiple second reader antennas 13 uniform
It is disposed alternately at around reader chip module 111.The setting causes the first reader antenna 12 and the second reader antenna
13 are centered around around reader chip module 111 in petal-shaped, when reading RFID label tag, the magnetic induction intensity in which direction
It is big just to be worked with the reader antenna 13 close to this direction, so as to greatly improve the sensitivity of reader reading, also improve
The applicability of system.In other embodiments, also settable reader 10 comes for label including multiple first reader antennas 12
Chip provides energy, and realizes that orientation is read with second reader antenna 13.
In the present embodiment, it is preferred that it is coil day to set the first reader antenna 12 and the second reader antenna 13
Line.However, the utility model is not limited in any way to this.In other embodiments, the first reader antenna 12 and the can be set
Two reader antennas 13 are any of dipole antenna, monopole antenna or other antennas, or the first reader day
The reader antenna 13 of line 12 and second is both any in coil antenna, dipole antenna, monopole antenna and other antennas
Combination；As being coil antenna similar to the first reader antenna 12, the second reader antenna 13 is group as dipole antenna
Close.
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 use different types of antenna or both using identical antenna type but specific size difference is come real
It is existing.However, the utility model is not limited in any way to this.In other embodiments, the first reader antenna 12 and the can be set
Two reader antennas 13 use identical transmission frequency.
Corresponding with above-mentioned reader, the utility model also provides a kind of RFID label tag 20.The RFID label tag includes label originally
Body 21 and label antenna 22.Label body 21 includes label chip 211.Label antenna 22 is electrically connected with label chip 211, label
Antenna 22 couples with least one electromagnetic field of first reader antenna 12, obtains what at least one first reader antenna 12 radiated
Energy, be 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, which are loaded modulation variation, passes through magnetic field map to the second reader antenna 13.Specifically, in high frequency field, label antenna
22 form the supply voltage of label chip 211 by sensing magnetic field caused by least one first reader antenna 12；And
Hyperfrequency and superfrequency field, label antenna 22 absorb the power that reader antenna is launched, and are label chip 211 after rectified
Voltage is provided.
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.
In high frequency field, alternating current is flowed through in the first reader antenna 12 in 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, that is, produce needed for label chip
The DC voltage wanted, realize 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.It is likewise, 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, 12 outside transmission power of the first reader antenna, partial dispersion is into air, portion
Divide and absorbed by label antenna, the rectified rear operating voltage for forming label chip 211 of power of absorption.Simultaneously, second read
Read device antenna 13 and certain modulation is carried out 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 passes
It is defeated.
Because energy caused 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 provides can obtain the identification of longer distance, realize remote inspection
Survey.
In the present embodiment, label antenna 22 is coil antenna.However, the utility model is not limited in any way to this.In
In other embodiments, 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 to include 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 utility model
This is not limited in any way.In other embodiments, the first reader-tag 12 and the second reader-tag 13 can be configured as
Structure as shown in Figure 3.
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 that electrical connector is provided as in the tap of antenna body 1 connects to realize.However, the utility model is not made to this
Any restriction.In the present embodiment, label chip 211 is pressed with binary data coding Signal-controlled switch device, antenna body 1
The low and high level of binary data coding signal changes and is switched on or disconnects, and the load change on label antenna 22 passes through label
Antenna 22 is mapped on the second reader-tag 13, the voltage of the second reader-tag 13 is also changed by this rule.The voltage
After the relative decoding processes such as the demodulation filtering by reader chip module 111, data just enter reader 10.
In the reader that the present embodiment provides, 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 utility model 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 provides
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 label core after rectified 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 with corresponding code character after coding to control a certain parameter of high-frequency carrier signal, it is changed with code character
And change, this signal through electromagnetic field couples acquired in the second label antenna 222, then complete 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, 12 outside transmission power of the first reader antenna, partial dispersion is into air, portion
Divide and absorbed by the first label antenna 221, the rectified rear operating voltage for forming label chip 211 of power of absorption.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 provides, 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 couple.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
There is antenna 222 different antenna sizes to cause the transmission of the acquisition of the energy of label chip 211 and data in different frequencies
Lower completion, this not only substantially increases identification distance, while also improves the adaptability of system.However, the utility model is to this
It is not limited in any way.In other embodiments, it is dipole that the first reader antenna 12 and the second reader antenna 13, which can be set,
Any of sub-antenna, monopole antenna or other antennas, or the first reader antenna 12 and the second reader antenna 13
Cause both with not for both any combinations in coil antenna, dipole antenna, monopole antenna and other antennas
Same transmission frequency；If similar first reader antenna 12 be coil antenna, the second reader antenna 13 for dipole antenna this
The combination of sample.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：The 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 be using as data transfer
Second read antenna 13 is set in hand-held shape so as to adapt to different application environments, as the cash register and logistics of supermarket scan, or
Second read antenna 13 is arranged on mechanical arm to be pointed to the scanning of the label of concealed location by person, greatly improves reader
The scope of application.
In summary, reader provided by the utility model, RFID label tag and RFID identification system be compared to prior art,
With 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 the load modulation variation for detecting RFID label tag side label antenna, the energy of RFID label tag obtain
Take and taken with information exchange using different reader antennas.Because the second reader antenna for label chip without providing energy
Amount, its caused energy is completely used for information exchange, therefore it can have very long reading distance and read 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 a manner of hand-held or set on the robotic arm so as to realize the knowledge of the RFID label tag of concealed location
Not.
It is 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.
Although the utility model is disclosed above by preferred embodiment, but the utility model is not limited to, it is any
This known those skilled in the art, do not departing from spirit and scope of the present utility model, a little change and retouching, therefore this practicality can be made
New protection domain is worked as to be 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, it 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.
A kind of 6. RFID label tag that reader with described in claim 1 is engaged, it is characterised in that including：
Label body, including label chip；
Label antenna, it is electrically connected with the label chip, the label antenna and at least one first reader antenna electromagnetic field
Coupling, energy caused by least one first reader antenna of acquisition, be 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
At least one first label antenna and at least one second label antenna connect, the first label antenna electromagnetic field coupling first are read
Device antenna, the second antenna tag couple 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 connect multiple days by controlling multiple electrical connectors
Line body.
A kind of 9. 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720407505.9U CN206711111U (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 |
|---|---|---|---|
| CN201720407505.9U CN206711111U (en) | 2017-04-18 | 2017-04-18 | Reader, RFID label tag and RFID identification system |
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| Publication Number | Publication Date |
|---|---|
| CN206711111U true CN206711111U (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720407505.9U Active CN206711111U (en) | 2017-04-18 | 2017-04-18 | Reader, RFID label tag and RFID identification system |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960169A (en) * | 2017-04-18 | 2017-07-18 | 陆义潮 | Reader, RFID label tag and RFID identification system |
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2017
- 2017-04-18 CN CN201720407505.9U patent/CN206711111U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106960169A (en) * | 2017-04-18 | 2017-07-18 | 陆义潮 | Reader, RFID label tag and RFID identification system |
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