CN208044613U - Enhance the device of RFID tag literacy and intelligent device of making an inventory - Google Patents
Enhance the device of RFID tag literacy and intelligent device of making an inventory Download PDFInfo
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- CN208044613U CN208044613U CN201820397555.8U CN201820397555U CN208044613U CN 208044613 U CN208044613 U CN 208044613U CN 201820397555 U CN201820397555 U CN 201820397555U CN 208044613 U CN208044613 U CN 208044613U
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Abstract
The utility model is related to a kind of device of enhancing RFID tag literacy and intelligent devices of making an inventory.It solves the problems such as existing RFID tag literacy is poor.Including at least one RFID reader antenna and at least one RFID by read write tag, the RFID reader antenna and RFID is separately positioned on by read write tag between the reflecting plate that two are mutually parallel, the radiation beam direction of the RFID reader antenna perpendicular to any one reflecting plate, and the RFID by read write tag not close to RFID reader antenna and any one reflecting plate.Advantage is：Metal conductor plate is irradiated by the radiated wave near normal of read-write antenna, approximately form total reflection, and so that back wave is carried out Downward addition with incidence wave and achieve the effect that enhancing, the several times for realizing electromagenetic wave radiation power density increase, field strength difference is smaller, therefore label be easy to read and write, mutually close to the intensive label of batch also achieve successfully fast reading and writing, improve the stability of system acquisition data.
Description
Technical field
The utility model belongs to wireless radios technical field, more particularly, to a kind of enhancing RFID tag literacy
Device and intelligence make an inventory device.
Background technology
Carrying out Item Management using RFID technique realizes convenience and intelligence, and convenience is mainly reflected in boundling object
The information of product is read.So-called boundling article refers to just that more article collection is bundled together, and quantity is more, article comparatively dense.Big part object
Because item sizes are big when product boundling, tag antenna dimension is relatively also larger, and is spaced also larger, and when this mode is easier to realize and read
Label is taken, this is also that RFID technique applies most modes.However RFID technique small article boundling application in be but faced with compared with
More skill technical bottlenecks.First small article because size it is small, tag antenna dimension also just it is small, small article collection is bundled together, also makes
The RFID tag that article is embedded in also collects bundled together, this allows for reading and become difficult.In addition also due to small article material
Mostly dielectric loss material can make RFID tag performance decline to a great extent, and the difficulty of the full label of reading is made to further strengthen.
In existing technical solution, for example, Chinese patent literature discloses a kind of jewelry inventory management system [application
Number：201010217421.1], which includes the RFID electronic label comprising jewelry essential information, for reading electronic tag
The reader and information management server of information, the reader include that hand-held radio frequency identification reader and fixed radio frequency are known
Other reader after the reader reads the information of electronic tag, is communicated by communication module and described information management server.
In another example Chinese patent literature discloses a kind of asset management system [Shen based on smart-RFID electronic tag gold and jewelries
Please number：201610077670.2], including：(1), the smart-RFID electronic tags in each product；(2), it is mounted on
Smart-RFID label reader systems below sales counter；(3), mounted on the smart-RFID labels of cashier computer system
Reader system；(4) computer and its management system being mounted near safety cabinet.Boundling article is had to be broken out, by
A reading becomes time-consuming and laborious, this just makes RFID technique application lose convenience.Research and solution batch are read all the time
It is the important research project of RFID application technologies, discloses, also far reach less than actually answering although having more method and apparatus
With middle demand, and device is complicated, and low efficiency is still current the phenomenon that being primarily present.
Invention content
One of the utility model purpose is that have enhancing in view of the above-mentioned problems, offer is a kind of simple and reasonable
The device of the enhancing RFID tag literacy of electromagenetic wave radiation power density.
Another purpose of the utility model is in view of the above-mentioned problems, providing a kind of simple and reasonable, solution smallclothes object
Product boundling reads the difficult intelligence based on ultra-high frequency RFID technology and makes an inventory device.
In order to achieve the above objectives, the utility model uses following technical proposal：This enhancing RFID tag literacy
Device, including at least one RFID reader antenna and at least one RFID are by read write tag, which is characterized in that the RFID
Reading and writing device antenna and RFID are separately positioned on by read write tag between the reflecting plate that two are mutually parallel, the RFID reader
The radiation beam direction of antenna perpendicular to any one reflecting plate, and the RFID by read write tag not close to RFID reader
Antenna and any one reflecting plate.
The utility model provides the device of enhancing RFID tag literacy, and the radiated wave by RFID reader antenna is close
Like vertical irradiation reflecting plate, total reflection is approximately formed, and back wave is made to carry out the effect that Downward addition reaches enhancing with incidence wave
Fruit.It is sandwiched in simultaneously because of RFID reader antenna between parallel reflecting plate, reflecting plate of the back wave through opposite carries out secondary counter
It penetrates, secondary superposition, secondary counter ejected wave forms third secondary reflection and superposition using another side baffle reflection, in this way by multiple
After reflection and superposition, the electromagnetic wave power density between reflecting plate reaches higher value.For RFID by for read write tag, need
Exciting power is constant under certain condition, and the electromagnetic field at the space residing for it increases several times and decades of times, label
In such a device since the exciting power being subject to increases, just becomes ground and be easy to read-write.RFID is existed by read write tag
When quantity comparatively dense, because the interval of label and label is small or close to, performance drastically reduces, need exciting power often to increase
Big several times are read and write difficult under normal condition and environment or are difficult to realize be read and write, and the utility model realizes electromagnetism amplitude
The several times for penetrating power density increase, and solve the technical bottleneck in RFID applications.
In the device of above-mentioned enhancing RFID tag literacy, the RFID reader antenna distance any one
The integral multiple of the wavelength apart from the radiated wave that size is RFID reader antenna of reflecting plate, and between two reflecting plates
Apart from size be RFID reader antenna radiated wave wavelength integral multiple.
In the device of above-mentioned enhancing RFID tag literacy, the RFID reader antenna is tightly attached to two instead
It penetrates in plate on the inside of any one reflecting plate, and a remaining reflecting plate in two reflecting plates of the RFID reader antenna distance
Apart from size be RFID reader antenna radiated wave wavelength integral multiple.
In the device of above-mentioned enhancing RFID tag literacy, the distance between two reflecting plates size is equal to RFID
The wavelength of the radiated wave of reading and writing device antenna.That is, RFID reader antenna and a wherein reflecting plate are close to making RFID read-write
Line-spacing reflecting plate distance in device day is about 0 times of wavelength, and is about the interval of two reflecting plates away from another reflecting plate distance.Make in this way
RFID by read write tag between parallel metal, neither with RFID reader antenna close to, also not with reflecting plate close to.
In the device of above-mentioned enhancing RFID tag literacy, the reflecting plate is metallic plate, the RFID
Reading and writing device antenna is microstrip antenna, and the RFID is by the distance between read write tag and any one RFID reader antenna
Size is more than 0.16 times of the wavelength of the radiated wave of RFID reader antenna.Namely RFID by read write tag be placed in reflecting plate it
Between, and the distance for leaving two reflecting plates is more than 0.16 times of system operation wavelength.
In the device of above-mentioned enhancing RFID tag literacy, the polarization mode of the RFID reader antenna is
Circular polarisation, and the antenna aperture size of RFID reader antenna is less than the 1/4 of the wavelength of radiated wave；On the inside of each reflecting plate
Equipped with several RFID reader antennas, and the RFID reader antenna on two reflecting plates is staggered.RFID reader antenna
Using small size type directional type microstrip antenna, antenna aperture is less than the 1/4 of operation wavelength, make in this way near field radiation area substantially with
Near-field sensing area overlaps, and reduces the scattered defect of near field radiation area field strength distribution range, specifies the reading and writing device antenna bore upper limit,
The influence of RFID reader antenna reduces secondary reflection degree when effect is to solve secondary reflection, that is, to even number
Secondary reflection energy it is as large as possible.Meanwhile between reflecting plate arranges that the quantity of RFID reader antenna depends on reflecting plate
Space size is configured and is adjusted according to practical situations.
It is made an inventory dress using the intelligence based on ultra-high frequency RFID technology of the device of above-mentioned enhancing RFID tag literacy
It sets as described below：
It makes an inventory device based on the intelligence of ultra-high frequency RFID technology, includes the metal box with inner cavity, the metal box
There is the opening being connected with inner cavity, the metal box upper and lower ends to be respectively formed reflecting plate for front side, the metal box
Opening is equipped with energy pull and the nonmetallic liner in inner cavity, the metal box upper and lower ends inside and nonmetallic liner
It is respectively formed interlayer between outside, and is respectively equipped at least one RFID reader antenna in the interlayer, the non-gold
Belong to and is equipped at least one RFID in liner by read write tag.That is, the left and right sidewall of nonmetallic liner and metal box, up and down
Side wall, rear wall form an interlayer, and RFID reader antenna is fixed on the top and bottom sidewall of metal box described in interlayer；It is described
Two side spacing matches metal box with the wavelength of hyperfrequency working frequency range up and down, at left and right sides of the metal box wall spacing with surpass
The wavelength of high-frequency work frequency range matches, and when reader works, electromagnetic wave is in closed metal box cavity, by left and right two
Lateral reflection plate, the reflection superposition of upper and lower two lateral reflection plate, makes the power density in metal cavity greatly increase, the system of improving is adopted
Collect the stability of data.Wall opening on front side of metal box facilitates commodity disengaging operation of being made an inventory, inner cavity to play carrying by commodity of making an inventory
Effect, the nonmetallic liner is embedded in by the front side wall opening of metal box in metal box, the nonmetallic liner and gold
The left and right sidewall of category case, top and bottom sidewall, rear wall form an interlayer, and the nonmetallic liner material is non-metallic material, right
Penetrating for electromagnetic wave does not influence.
In the above-mentioned intelligence based on ultra-high frequency RFID technology makes an inventory device, on the metal box upper and lower ends inner wall
It is respectively equipped with RFID reader antenna, the RFID reader antenna on the metal box upper and lower ends inner wall is put in right-angled intersection
It sets, the RFID reader antenna on the metal box any one end inner wall is along nonmetallic liner cavity center symmetric setting, institute
The nonmetallic liner stated is arranged by location structure in metal box, and being equipped on front side of the metal box can be by closure of openings
Shielding construction.
Preferably, shielding construction here is shielding curtain, and using weaving metallic fibers, material is softer, can be quick
It starts, put down, met along shielding curtain edge and be formed with square magnet piece, when shielding curtain is put down, automatic absorbing is in metal box opening
On outer circumferential.Metallic fiber has good electric conductivity, free electron in metallic fiber, under the action of electromagnetic wave electric field,
Conduction electric current is formed, the Joule heat that conduction electric current generates makes electromagnetic wave energy constantly be lost, to reach shield effectiveness.It is described to adopt
With the shielding curtain of weaving metallic fibers, there is special reticular structure, rough surface to reduce electromagnetic wave on shielding curtain surface
Mirror-reflection increases diffusing reflection, to reduce the formation of dead angle, improves the stability of system acquisition data.
RFID reader antenna is small-bore ultra-high frequency antenna, and antenna gain 2-3dB, small-bore ultra-high frequency antenna size is in hyperfrequency
Between 0.1 to 0.2 times of working frequency range wavelength, small and exquisite size effectively prevents reflection electromagnetic wave and is done to ultra-high frequency antenna
It disturbs.RFID reader antenna is placed on metal box and is formed by lower interlayer with nonmetallic liner, and RFID reader antenna is solid
It is scheduled on the inner wall up and down of metal box, each interlayer respectively places two RFID reader antennas, upper layer and lower layer RFID reader day
Line right-angled intersection is placed, and every layer of RFID reader antenna is about nonmetallic liner cavity central symmetry.Wherein, location structure includes
Metal fastenings on rear side of nonmetallic liner is set, and nonmetallic liner is fixed on the rear side of metal box by metal fastenings
On wall.
In the above-mentioned intelligence based on ultra-high frequency RFID technology makes an inventory device, the metal box lower end inside has position
Hyperfrequency read-write equipment that is on rear side of metal box and being connected respectively with RFID reader antenna, and set on metal box rear wall
There are the power interface and/or communication interface being connected with hyperfrequency read-write equipment.
Compared with prior art, the utility model has the advantage of：
1, simple in structure, metal conductor plate is irradiated by the radiated wave near normal of read-write antenna, approximately forms total reflection,
And so that back wave is carried out Downward addition with incidence wave and achieve the effect that enhancing, realize the several times of electromagenetic wave radiation power density
Increase, field strength difference is smaller, therefore label is easy to read and write, mutually close to the intensive label of batch also achieve successfully fast fast reading
It writes, improves the stability of system acquisition data.
2, the shielding curtain of metal material braiding, there is special reticular structure, rough surface to reduce electromagnetic wave and shield
The mirror-reflection on curtain surface, increases diffusing reflection, to reduce the formation of dead angle, can also effectively shield metal box with
Outer label prevents from misreading, and improves the stability of system acquisition data.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment one provided by the utility model；
Fig. 2 is the partial structural diagram of embodiment one provided by the utility model；
Fig. 3 is the device Space Expanding schematic diagram of embodiment one provided by the utility model；
Fig. 4 is the structural representation when intelligence of embodiment two provided by the utility model makes an inventory that metal box is closed in device
Figure；
Fig. 5 is the structural representation when intelligence of embodiment two provided by the utility model makes an inventory that metal box is opened in device
Figure；
Fig. 6 is that the intelligence of embodiment two provided by the utility model is made an inventory the explosive view of device；
Fig. 7 is that the intelligence of embodiment two provided by the utility model is made an inventory the sectional view of device；
Fig. 8 is the structural schematic diagram of the shielding construction of embodiment two provided by the utility model；
In figure, RFID reader antenna 1, RFID by read write tag 2, reflecting plate 3, metal box 4, opening 41, it is nonmetallic in
Courage 5, interlayer 6, location structure 7, metal fastenings 71, shielding construction 8, shielding curtain 81, square magnet piece 82, handgrips 83,
Hyperfrequency read-write equipment 9.
Specific implementation mode
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
Embodiment one
As shown in Figs. 1-3, the device of this enhancing RFID tag literacy, including at least one RFID reader antenna 1
With at least one RFID two are separately positioned on by read write tag 2 mutually by read write tag 2, RFID reader antenna 1 and RFID
Between parallel reflecting plate 3, the radiation beam direction of RFID reader antenna 1 is perpendicular to any one reflecting plate 3, and RFID quilts
Read write tag 2 is not close to RFID reader antenna 1 and any one reflecting plate 3.Radiated wave by RFID reader antenna 1 is close
Like vertical irradiation reflecting plate 3, total reflection is approximately formed, and back wave is made to carry out the effect that Downward addition reaches enhancing with incidence wave
Fruit.It is sandwiched in simultaneously because of RFID reader antenna 1 between parallel reflecting plate 3, reflecting plate of the back wave through opposite carries out secondary
Reflection, secondary superposition, secondary counter ejected wave form third secondary reflection and superposition using another side baffle reflection, in this way through excessive
After secondary reflection and superposition, the electromagnetic wave power density between reflecting plate 3 reaches higher value.For RFID by for read write tag 2,
It is constant to need exciting power under certain condition, and the electromagnetic field at the space residing for it increases several times and decades of times,
Label is increased due to the exciting power being subject in such a device, is just become ground and is easy to read-write.RFID is marked by read-write
Label are 2 in quantity comparatively dense, because the interval of label and label is small or close to performance drastically reduces, and the exciting power needed is past
Toward to increase several times, read-write is difficult under normal condition and environment or is difficult to realize be read and write, and the utility model realizes electricity
The several times of electromagnetic wave radiation power density increase, and solve the technical bottleneck in RFID applications.
Further, RFID reader antenna 1 here is RFID read-write apart from size apart from any one reflecting plate 3
The integral multiple of the wavelength of the radiated wave of device antenna 1, and the distance between two reflecting plates 3 size is RFID reader antenna 1
The integral multiple of the wavelength of radiated wave.
Wherein, reflecting plate 3 here is metallic plate, and RFID reader antenna 1 is microstrip antenna, and RFID is by read write tag
The distance between 2 and any one RFID reader antenna 1 size are more than the wavelength of the radiated wave of RFID reader antenna 1
0.16 times.Namely RFID sets 2 between reflecting plate 3 by read write tag, and the distance for leaving two reflecting plates 3 is more than 0.16 times
System operation wavelength.Here the polarization mode of RFID reader antenna 1 is circular polarisation, and the antenna opening of RFID reader antenna 1
Diameter size is less than the 1/4 of the wavelength of radiated wave；Each 3 inside of reflecting plate is equipped with several RFID reader antennas 1, and two
RFID reader antenna 1 on reflecting plate 3 is staggered.Here RFID reader antenna 1 is declined using small size type orientation
Band antenna, antenna aperture are less than the 1/4 of operation wavelength, near field radiation area are made to be overlapped substantially with near-field sensing area in this way, reduce
The scattered defect of near field radiation area field strength distribution range specifies the reading and writing device antenna bore upper limit, and effect is secondary in order to solve
The influence of RFID reader antenna 1 reduces secondary reflection degree, that is, to the greatest extent may be used to even-times reflected energy when reflection
Energy ground is big.Meanwhile the space size between reflecting plate 3 is depended in the quantity of reflecting plate arrangement RFID reader antenna 1, according to reality
Border applicable cases are configured and adjust.
The method of enhancing RFID tag literacy in the present embodiment, includes the following steps：A, RFID reader antenna 1
Radiated wave vertical irradiation on any one reflecting plate 3 in two reflecting plates 3, reflecting plate 3 of the back wave through opposite carries out
Secondary reflection, secondary superposition, secondary counter ejected wave reflect to form third secondary reflection and superposition using another side reflecting plate 3, in this way
By multiple reflections and superposition after, radiated wave between two reflecting plates 3 by multiple reflections and superposition after, two reflecting plates 3
Between radiated wave power density reach higher value；
B, RFID for read write tag 2, is needed to swash by read write tag 2 between two reflecting plates 3 for RFID
It is constant to encourage power under certain condition, and the electromagnetic field at the space residing for it increases several times and decades of times, RFID quilts
Read write tag 2 is increased due to the exciting power being subject in such a device, is just become ground and is easy to read-write.RFID is read
Label 2 is write in quantity comparatively dense, because the interval of label and label is small or close to, performance drastically reduces, need excitation work(
Rate will often increase several times, read and write under normal condition and environment difficult or be difficult to realize be read and write, and the side of the utility model
The several times that method and device realize electromagenetic wave radiation power density increase, and solve the technical bottleneck in RFID applications.
It illustrates, it is assumed that RFID reader antenna 1 here is tightly attached to any one reflecting plate 3 in two reflecting plates 3
Inside, and in RFID reader antenna 1 distance, two reflecting plates 3 a remaining reflecting plate 3 apart from size be RFID reader
The integral multiple of the wavelength of the radiated wave of antenna 1.Preferably, the distance between two reflecting plates 3 size is equal to RFID reader day
The wavelength of the radiated wave of line 1.That is, RFID reader antenna 1 and a wherein reflecting plate 3 are close to making RFID reader day
Line 1 away from the reflecting plate 3 apart from about 0 times of wavelength, and away from another reflecting plate 3 apart from the interval of about two reflecting plates 3.Make in this way
RFID by read write tag 2 between parallel metal, neither with RFID reader antenna 1 close to, also not with reflecting plate 3 close to.
Assuming that RFID reader antenna 1 uses 920MHz-925MHz frequency range hyperfrequencies, the spacing of two reflecting plates 3 just to set
It is set to 1 times of wavelength of 920MHz, i.e., about 33cm.RFID reader antenna 1 is microstrip antenna, and reflecting plate 3 uses metallic conduction plate,
One of microstrip antenna and parallel metal conductive plate plate are close to radiation fin and the parallel metal conductive plate of microstrip antenna are also put down
Row.RFID is placed in by read write tag 2 between the metallic conduction plate being mutually parallel, the distance apart from each plate of parallel electrically conductive metallic plate
More than 0.16 times wavelength, the present embodiment press 920MHz wavemeters, and RFID is more than 5cm by 2 anomaly row conductive metal sheet of read write tag.
The microstrip antenna of the present embodiment connects 920-925MHz, the signal generator of 15dBm, at antenna 5-28cm
Carry out the field strength measurement value such as following table under several environmental conditions：
Analyzed by test result, the field strength in the space of the utility model compared under open condition increase 10dB with
On, and field strength difference is smaller in cavity space.It is read and write being placed in the present apparatus by read write tag, since read-write field strength increases
10dB or more, and field strength difference is smaller, therefore label is easy to read and write, mutually close to the intensive label of batch also achieve it is successfully fast
Fast reading is write.
Embodiment two
As shown in Figure 4-8, the present embodiment is used in mainly for the device of enhancing RFID tag literacy based on superelevation
The intelligence of frequency RFID technique is made an inventory the specific embodiment of device.
The intelligence based on ultra-high frequency RFID technology in the present embodiment is made an inventory device, includes the metal box 4 with inner cavity, gold
Belonging to 4 front side of case, there is the opening 41 being connected with inner cavity, 4 upper and lower ends of metal box to be respectively formed reflecting plate 3, and metal box 4 is opened
Be equipped at mouthfuls 41 can pull and the nonmetallic liner 5 in inner cavity, on the inside of 4 upper and lower ends of metal box and outside nonmetallic liner 5
It is respectively formed interlayer 6 between side, and is respectively equipped at least one RFID reader antenna 1 in interlayer 6, is set in nonmetallic liner 5
There is at least one RFID by read write tag 2.
Wherein, nonmetallic liner 5 here forms an interlayer with the left and right sidewall of metal box 4, top and bottom sidewall, rear wall
6, RFID reader antenna 1 is fixed on the top and bottom sidewall of the metal box 4 in interlayer 6；About 4 two side spacing of the metal box
It matches with the wavelength of hyperfrequency working frequency range, the wavelength of the metal box 4 left and right sides wall spacing and hyperfrequency working frequency range
It matches, that is to say, that metal box 4 here is square, and when reader works, electromagnetic wave is in closed 4 chamber of metal box
In vivo, by left and right sides reflecting plate 3, the reflection of upper and lower two lateral reflection plate 3 is superimposed, and makes the power density in 4 cavity of metal box
It greatly increases, improves the stability of system acquisition data.4 front side wall opening of metal box facilitates commodity disengaging operation of being made an inventory,
Carrying is played by commodity of making an inventory in its inner cavity, and the nonmetallic liner 5 is embedded in by the front side wall opening 41 of metal box 4
In metal box 4, the nonmetallic liner 5 forms an interlayer 6, institute with the left and right sidewall of metal box 4, top and bottom sidewall, rear wall
It is non-metallic material to state 5 material of nonmetallic liner, is not influenced on penetrating for electromagnetic wave.
Wherein, RFID reader antenna 1, metal box about 4 two are respectively equipped on 4 upper and lower ends inner wall of metal box here
The RFID reader antenna 1 on inner wall is held to be placed in right-angled intersection, the RFID reader antenna on 4 any one end inner wall of metal box
1 is symmetrical arranged along 5 chamber central of nonmetallic liner, and nonmetallic liner 5 is arranged by location structure 7 in metal box 4, and metal
4 front side of case is equipped with the 41 closed shielding constructions 8 that can will be open.
Preferably, shielding construction 8 here is shielding curtain 81, and using weaving metallic fibers, material is softer, can be fast
Speed is started, is put down, and is met along 81 edge of shielding curtain and is formed with square magnet piece 82, and when shielding curtain 81 is put down, automatic absorbing is in gold
Belong to case 4 to be open on outer circumferential, handgrips 83 is additionally provided in 81 outside of shielding curtain, consequently facilitating opening shielding curtain 81, metal
Fiber has good electric conductivity, and free electron forms conduction electric current, pass under the action of electromagnetic wave electric field in metallic fiber
The Joule heat that electrical conduction current generates makes electromagnetic wave energy constantly be lost, to reach shield effectiveness.It is described to use weaving metallic fibers
Shielding curtain 81, there is special reticular structure, rough surface to reduce electromagnetic wave in the mirror-reflection on shielding curtain surface, increase
Add diffusing reflection, to reduce the formation of dead angle, improves the stability of system acquisition data.RFID reader antenna
1 is small-bore ultra-high frequency antenna, and antenna gain 2-3dB, small-bore ultra-high frequency antenna size is in hyperfrequency working frequency range wavelength
Between 0.1 to 0.2 times, small and exquisite size effectively prevents interference of the reflection electromagnetic wave to ultra-high frequency antenna.RFID reader day
Line 1 is placed on metal box 4 and is formed by lower interlayer 6 with nonmetallic liner 5, and RFID reader antenna 1 is fixed on metal box 4
Inner wall up and down on, each interlayer 6 respectively place two RFID reader antennas 1,1 cross of upper layer and lower layer RFID reader antenna hand over
Fork is placed, and every layer of RFID reader antenna 1 is symmetrical about 5 chamber central of nonmetallic liner.Wherein, location structure 7 includes setting
In the metal fastenings 71 of 5 rear side of nonmetallic liner, and nonmetallic liner 5 is fixed on metal box 4 by metal fastenings 71
On rear wall.
Further, 4 lower end inside of metal box here have be located at the rear side of metal box 4 and respectively and RFID reader
The connected hyperfrequency read-write equipment 9 of antenna 1, and the power supply being connected with hyperfrequency read-write equipment 9 is equipped on 4 rear wall of metal box
Interface and/or communication interface.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although be used more herein RFID reader antenna 1, RFID by read write tag 2, reflecting plate 3, metal box 4,
Opening 41, nonmetallic liner 5, interlayer 6, location structure 7, metal fastenings 71, shielding construction 8, shielding curtain 81, square magnet piece
82, the terms such as handgrips 83, hyperfrequency read-write equipment 9, but it does not preclude the possibility of using other terms.Use these arts
Language is used for the purpose of more easily describing and explaining the essence of the utility model；It is construed as any one of the additional limitations
All it is contrary to the spirit of the present invention.
Claims (9)
1. a kind of device of enhancing RFID tag literacy, including at least one RFID reader antenna (1) and at least one
RFID is by read write tag (2), which is characterized in that the RFID reader antenna (1) and RFID is set respectively by read write tag (2)
It sets between two reflecting plates being mutually parallel (3), the radiation beam direction of the RFID reader antenna (1) is perpendicular to appointing
Anticipate a reflecting plate (3), and the RFID by read write tag (2) not close to RFID reader antenna (1) and any one instead
Penetrate plate (3).
2. the device of enhancing RFID tag literacy according to claim 1, which is characterized in that the RFID read-write
Wavelength of the device antenna (1) apart from any one reflecting plate (3) apart from the radiated wave that size is RFID reader antenna (1) it is whole
Several times, and the wavelength for the radiated wave that the distance between the two described reflecting plates (3) size is RFID reader antenna (1) is whole
Several times.
3. the device of enhancing RFID tag literacy according to claim 2, which is characterized in that the RFID read-write
Device antenna (1) is tightly attached in two reflecting plates (3) on the inside of any one reflecting plate (3), and the RFID reader antenna (1)
The wave apart from the radiated wave that size is RFID reader antenna (1) of a remaining reflecting plate (3) in two reflecting plates (3) of distance
Long integral multiple.
4. the device of enhancing RFID tag literacy according to claim 3, which is characterized in that two reflecting plates (3)
The distance between size be equal to RFID reader antenna (1) radiated wave wavelength.
5. the device of enhancing RFID tag literacy according to claim 1 or 2 or 3 or 4, which is characterized in that described
Reflecting plate (3) be metallic plate, the RFID reader antenna (1) is microstrip antenna, and the RFID is by read write tag
(2) and the distance between any one RFID reader antenna (1) size be more than RFID reader antenna (1) radiated wave wave
Long 0.16 times.
6. the device of enhancing RFID tag literacy according to claim 5, which is characterized in that the RFID read-write
The polarization mode of device antenna (1) is circular polarisation, and the antenna aperture size of RFID reader antenna (1) is less than the wavelength of radiated wave
1/4；It is equipped with several RFID reader antennas (1), and the RFID on two reflecting plates (3) on the inside of each reflecting plate (3)
Reading and writing device antenna (1) is staggered.
7. it is a kind of using described in any one of claim 1-6 enhancing RFID tag literacy device based on superelevation
The intelligence of frequency RFID technique is made an inventory device, which is characterized in that includes the metal box (4) with inner cavity, before the metal box (4)
Side has the opening (41) being connected with inner cavity, and the metal box (4) upper and lower ends are respectively formed reflecting plate (3), described
Be equipped at the opening (41) of metal box (4) can pull and the nonmetallic liner (5) in the inner cavity, on the metal box (4)
Be respectively formed interlayer (6) between on the inside of lower both ends and on the outside of nonmetallic liner (5), and the described interlayer (6) it is interior be respectively equipped with to
A few RFID reader antenna (1), the nonmetallic liner (5) is interior to be equipped at least one RFID by read write tag (2).
The device 8. intelligence according to claim 7 based on ultra-high frequency RFID technology is made an inventory, which is characterized in that the gold
Belong to and be respectively equipped with RFID reader antenna (1) on case (4) upper and lower ends inner wall, on the metal box (4) upper and lower ends inner wall
RFID reader antenna (1) placed in right-angled intersection, the RFID reader day on the inner wall of the metal box (4) any one end
Line (1) is symmetrical arranged along nonmetallic liner (5) chamber central, and the nonmetallic liner (5) is arranged by location structure (7)
In metal box (4), and being equipped on front side of the metal box (4) can be by opening (41) closed shielding construction (8).
The device 9. intelligence according to claim 8 based on ultra-high frequency RFID technology is made an inventory, which is characterized in that the gold
Belonging to case (4) lower end inside, there is hyperfrequency that is being located on rear side of metal box (4) and being connected respectively with RFID reader antenna (1) to read
Write device (9), and the power interface being connected with hyperfrequency read-write equipment (9) and/or communication are equipped on metal box (4) rear wall
Interface.
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| CN201820397555.8U CN208044613U (en) | 2018-03-22 | 2018-03-22 | Enhance the device of RFID tag literacy and intelligent device of making an inventory |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114444624A (en) * | 2020-10-30 | 2022-05-06 | 菜鸟智能物流控股有限公司 | Transmission line, antenna, radio frequency identification device and identification apparatus |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114444624A (en) * | 2020-10-30 | 2022-05-06 | 菜鸟智能物流控股有限公司 | Transmission line, antenna, radio frequency identification device and identification apparatus |
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Effective date of registration: 20201210 Address after: Area B, Chengbei Industrial Park, Jiapu Town, Changxing County, Huzhou City, Zhejiang Province Patentee after: Zhejiang IOTI Electronic Materials Co.,Ltd. Address before: Room 100, building 3117, Wuchang Street, Hangzhou, Zhejiang Province Patentee before: HANGZHOU CREATION-CLOUD INTELLIGENT TECHNOLOGY Co.,Ltd. |
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