CN103178337A - Near field read-write antenna and real-time asset management system - Google Patents
Near field read-write antenna and real-time asset management system Download PDFInfo
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- CN103178337A CN103178337A CN201110435972XA CN201110435972A CN103178337A CN 103178337 A CN103178337 A CN 103178337A CN 201110435972X A CN201110435972X A CN 201110435972XA CN 201110435972 A CN201110435972 A CN 201110435972A CN 103178337 A CN103178337 A CN 103178337A
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Abstract
The invention discloses a near field read-write antenna and a real-time asset management system. The near field read-write antenna is characterized in that a ground plane is formed on a first surface of a dielectric substrate, a bending micro-strip line is arranged on a second surface of the dielectric substrate and reads an electronic tag in electromagnetic coupling mode, and read asset information is transmitted to a database at the control end to be stored and managed. Therefore, the technical effects of improving reading uniformity, group reading performance and asset management efficiency, controlling communication distance and reducing environment influences can be achieved.
Description
Technical field
The present invention relates to field of antenna, be specifically related to a kind of near field read-write antenna and the real-time asset management system.
Background technology
The example of each industrial field application radio-frequency (RF) identification (Radio Frequency Identification, RFID) was more and more in recent years, and the application in the middle of the novel business models such as logistics, medical treatment, national defence, traffic, Real Time Monitoring constantly increases.The RFID automatic identification technology with the mode of evolving be diffused into that various industries are on-the-spot, in the middle of manufacturing facility and actual life.In the middle of the show stand of stack room, library or food sales field, utilize the intelligent commodity shelf that near field antenna is installed, carry out in real time taking care of books, circulation resume and the various product information of institute's display goods is provided, formed a kind of new AC mode with the user.
At present concerning the production and system maintenance of enterprise, in the situation that consider quality, delivery date, the cost of material, the real-time management system that the RFID label carries out parts and material is adhered in employing, and stock's keeping, the processing of material are resolved, keeped in repair the aspects such as record management, buying, check is a kind of effective scheme.And, and the importance of strengthening enterprise competitiveness, the logistics management that reduces costs and efficient stock control constantly increases.Be the expansion along with assets kind and logistics scope, carrying out effectively to assets, management also more and more comes into one's own.
Radio frequency operation principle in rfid system mainly can be divided into electromagnetic coupled mode and microwave mode.Wherein, the rfid system of electromagnetic coupled mode is subjected to the degree less of surrounding environment influence, so have metastable characteristic aspect electronic tag (Tag).The rfid system of this electromagnetic coupled mode although be not suitable for being applied in the occasions such as moving of remote identification, label identified, the group of multiple label reads, is applicable to the identification aspect of intensive (form of trooping) label.Although and the rfid system of microwave mode has advantage preferably at aspects such as multiple tag identification speed, group's property read, remote identification, large capacity storage.But want the group to read intensive label in the confined space, needing to affect problem from basic solution Electromagnetic Interference and surrounding enviroment, and has the system of limited decipherment distance characteristic.If adopt the rfid system of high frequency (HighFrequency, HF) frequency range electromagnetic coupled mode, because of the physical property Boundary Limit, the improvement of its readable decipherment distance is difficult to realize technically.Therefore, have and to get rid of peripheral frequency resource and interfere, and the demand that can effectively read hyperfrequency (Ultra-High Frequency, UHF) the frequency range near field antenna that is attached to label on cabinet equipment constantly increases.
the input of various device at present, output and record management are by the fixed type reader-writer dedicated channel, the perhaps mode of the single identification equipment of hand-held read-write, if the intensive various device of putting and use the words of the RFID of uhf band in the management confined space, in order to get rid of electromagnetic influencing each other and electromagnetic interference (Electromagnetic interference, EMI), Electro Magnetic Compatibility (ElectromagneticCompatibility, EMC) impact, need first the remote radiation domain restrictions of 900MHz band RFID antenna in several Cm.But the technical elements that is controlled in this radiation field has limitation.Utilizing the method for the employing supplementary meanss such as absorbing material, metal shielding board or reduction rfid interrogator (also being called the near field read write line) power output is modal solution.The functional requirement of this near field reading and writing device antenna is that uniform field distribution will be kept in the radiation field in the antenna physical extent, and readable decipherment distance also to be limited to particular range within (being generally several Cm).Simultaneously, for the ease of expansion and exchange, its price will be low and to make slim, and, require to have the impedance bandwidth that comprises the UHF full frequency band.
Uhf band near field antenna so far, what mainly adopt is simple loop antenna, or changes the manifold type loop antenna of this loop antenna.The shortcoming of this loop antenna is that antenna ground plane separated by a distance could be stablized radiation, and when the antenna monnolithic case became large, this antenna was not suitable in the middle of the application apparatus management.In addition because of the distributional difference in magnetic field between loop antenna periphery and central part, along with the difference of reading and writing device antenna position, the discrimination of electronic tag (or being called for short label) also there is obvious difference.In order to form uniform field distribution in antenna effective area, also someone proposed helical antenna, and still, the whole topology of helical antenna is not suitable for being applied to the equipment control reading and writing device antenna.
The RFID technology of uhf band is to utilize electromagnetic backscattering to identify electronic tag.The arrangement design mode of the uhf band antenna that designs according to original far field operation principle, along with the directive property of arranging the factor and form specific direction, it can't eliminate electromagnetic interference and diffuse transmission influence at all, so the situation that discrimination obviously reduces can occur.Particularly can't form the Flat field in antenna effective interface identification field, therefore, according to the difference of RFID antenna ad-hoc location, have the shortcoming that discrimination sharply descends.
And, the antenna port of commercial rfid interrogator, by distributor or interchanger, when being arranged in most antennas and using, because of phenomenons such as the phase mutual interference between antenna, reflection on peripheral object and decay, have the white space of electronic label identification.And, when utilizing a plurality of antenna port of rfid interrogator, data processing speed can appear slow and read the problems such as decrease in efficiency because of the mutual exchange group between port.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of near field read-write antenna and the real-time asset management system, can't form Flat field in antenna effective interface identification field to solve current antenna, cause the antenna discrimination obviously to reduce and affect the problem of asset management efficient.
In order to address the above problem, the invention provides a kind of near field read-write antenna assembly, comprising: dielectric substrate, bending microstripline, input, load resistance and through hole.Wherein, the first surface of dielectric substrate is formed with ground plane; The bending microstripline is in order to being arranged on second of dielectric substrate, and with electromagnetic coupled mode reading electronic labels; Input is in order to being arranged on the first end of dielectric substrate, and is electrically connected head end and the read write line of bending microstripline; Load resistance is in order to being arranged on the second end of dielectric substrate, and is electrically connected the tail end of bending microstripline; And through hole is in order to be electrically connected ground plane and load resistance to form short-circuit loop.
About the real-time asset management system of the present invention, comprising: electronic tag, antenna assembly, read write line and control end.Wherein, each electronic tag is arranged at respectively corresponding asset equipment, and described electronic tag stores corresponding assets information; Antenna assembly has the bending microstripline, and reads the assets information of described electronic tag in the electromagnetic coupled mode; Read write line is electrically connected described antenna assembly, the assets information that reads in order to receive described antenna assembly; And control end is in order to interconnecting by communication interface and read write line, and the assets information that described antenna assembly reads is stored to database to be used for asset management.
compared with prior art, use the present invention, solve current antenna and can't form Flat field in antenna effective interface identification field, cause the antenna discrimination obviously to reduce and affect the problem of asset management efficient, be formed with ground plane by the first surface on the dielectric substrate, and the bending microstripline is set with electromagnetic coupled mode reading electronic labels on second on the dielectric substrate, and the database that the assets information that reads is sent to control end stores and manages, improved communication distance, group's property read, asset management efficient, and reduction environmental impact.
Description of drawings
Fig. 1 is the oblique view of the antenna assembly of tool bending microstripline of the present invention.
Fig. 2 is for using the schematic diagram of electric field vertical component, tangential component and the absolute value components of antenna assembly of the present invention in X-Y plane.
Fig. 3 is the schematic diagram of known straight line form irradiation structure and bending form irradiation structure of the present invention.
Fig. 4 is according to the differing heights from the antenna assembly surface, the two-dimentional near field magnetic field component of antenna assembly has been expressed as the schematic diagram of two-dimentional scalar component form.
Fig. 5 is for using the schematic diagram of the reflection loss value of antenna assembly of the present invention in rack.
Fig. 6 be antenna assembly of the present invention according to the variation of variable height, the schematic diagram in its readable identification field.
Fig. 7 is the system block diagrams of the real-time asset management system of answering the antenna assembly of apparatus bending microstripline.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
See also Fig. 1, Fig. 1 is the oblique view of the antenna assembly of tool bending microstripline of the present invention, and this antenna assembly 10 comprises: dielectric substrate 110, bending microstripline 120, input 130, load resistance 140 and through hole 150.Wherein, the first surface of dielectric substrate 110 is formed with ground plane 111.On reality was implemented, dielectric substrate 110 can be made of slim single substrate, and it also can be described as base material, sets up conductor line in order to provide.Because dielectric substrate 110 is prior art, therefore much more no longer to give unnecessary details at this.
Bending microstripline 120 is in order to being arranged on second of dielectric substrate 110, and with electromagnetic coupled mode reading electronic labels (not shown).On reality is implemented, for electric effect and the realization ultrathin type that reduces dielectric substrate 110, described bending microstripline 120 can be co-planar waveguide (co-planarwaveguide, CPW) or ground connection co-plane waveguide (Grounded CPW, GCPW) band shape bending irradiation structure body, sinusoidal wave in order to property performance period near field.Described bending microstripline 120 also can be provided with the parasitic factor 121 in bending place skew one segment distance, the length of described distance and the parasitic factor 121 is to adjust according to design variables such as antenna impedance bandwidth and reflection losses, the length of antenna assembly 10 and width are adjusted according to the total length of bending microstripline 120, and its adjusting range is expanded to λ/2 from λ/4.Be noted that especially described antenna assembly 10 is the near field antenna of hyperfrequency (Ultra-High Frequency, UHF) frequency range.
Through hole 150 is in order to be electrically connected ground plane 111 and load resistance 140 to form short-circuit loop.
On reality is implemented, it is inboard that antenna assembly 10 in the present invention can vertically be arranged on rack (not shown) door and window, and have the length (as: 110cm left and right) that is suitable for the rack door and window and can guarantee the suitable width (as: 5～10cm) in the equipment operator visual field.The apparent size of antenna assembly 10 can freely change according to practical service environment, and this change is less on the impact of antenna-reflected loss and readable decipherment distance characteristic.In addition, consider installation site in rack and the application on shelf, above-mentioned dielectric substrate 110 is selected to be consisted of with slim single substrate.Be noted that especially slim dielectric electrical quantity, dielectric constant and its thickness are the major parameters that determines antenna assembly 10 little bandwidth.
The front is mentioned, and bending microstripline 120 is banded bending irradiation structure body, that is to say, antenna assembly 10 has formed the cascaded structure radiant body of bending form from input 130 to end.The formation of this ' it ' font bending microstripline 120 is compared with rectilinear simple little band form, and the magnetic current distribution in its antenna effective area is wider.Therefore, in antenna readable range scope, can guarantee to identify uniformly the field.And periodically shadow region will appear in rectilinear simple little standing wave with forming on form, and in these positions, formation is unfavorable for identifying the condition of electronic tag.In addition, can by lay be expanded to Y-axis and with main radiator across a certain distance the parasitic factor 121 mutually, kept uniform radiation field and improved the impedance operator of antenna assembly 10.
In more detail, formation near-field thermal radiation field is that the above-mentioned bending microstripline 120 of purpose is to be made of following components.The one,, with the horizontal primary radiation circuit of bending curve formation.The 2nd,, separated by a distance with above-mentioned primary radiation circuit, and the parasitic radiation circuit that laterally forms.The 3rd,, take the adapter of an end as benchmark, two directions symmetrical periodic structure all in length and breadth.Utilize the rack assets real-time management system of near field reading and writing device antenna (being antenna assembly 10) in the present invention, recognize label in order to make it in the certain limited range of antenna vertical plane, only be designed to the pattern of working in the limited radial field.And, being attached to the label on each cabinet equipment, its attachment position will be selected in antenna assembly 10 horizontal widths with on interior and the shortest vertical height (in 5cm).
In addition, the antenna assembly shown in Fig. 1 10 is the periodic structures of setting up the parasitic factor 121.Yet the present invention does not limit quantity and the form thereof of the described parasitic factor 121 with this.And, between each parasitic factor 121 and with bending microstripline 120 adjacent interval also can be according to the impedance matching state and different.The end of antenna assembly 10, by through hole 150 formed and ground plane 111 between short-circuit loop.And, utilize the load resistance 140 with specified impedance, improved the reflection loss characteristic of antenna.
Embodiment according to the present invention, the spacing of the interval of above-mentioned bending microstripline 120 and the parasitic factor 121 is larger, and the coupled electric field size will weaken, thereby the readable decipherment distance of antenna vertical direction will be shortened.It is inboard that antenna assembly 10 in the present invention can utilize the modes such as two-sided gum, adhesive, screw to be fixed to the rack door and window.What pay special attention to is that ground plane 111 that the installation site will be selected in antenna assembly 10 does not contact the position on rack door and window metal door frame.
See also Fig. 2, Fig. 2 is for using the schematic diagram of electric field vertical component, tangential component and the absolute value components of antenna assembly of the present invention in X-Y plane.Wherein, electric-field strength kilsyth basalt 200 represents the power of electric field with different lightness, and lightness higher (color is more shallow) represents that electric field is more weak, otherwise lightness lower (color is darker) represents that electric field is stronger.In order to ensure uniform readable identification field, antenna assembly 10 has the bending microstripline 120 of bending morphosis.And, by X-Y plane electric field vertical component 210 as can be known, bend the bending place of microstripline 120 in one-period, the variation of direction of an electric field generating period, and inspire periodically sinusoidal wave.Can know the high field of seeing that bending microstripline 120 peripheries form from the tangential component 220 of X-Y plane electric field and absolute value components 230, and the transmission of these electric fields 10 ends from input 130 to antenna assembly do not have obvious field decay.In antenna assembly 10 fields, the field distribution of this electric field composition expansion and the biography ripple phenomenon that 10 ends, nothing obviously decays from input 130 to antenna assembly, guaranteed the even readable identification field in antenna assembly 10 interfaces, and, fundamentally solved independent working mode and EMI/EMC problem between adjacent antenna device 10.
See also Fig. 3, Fig. 3 is the schematic diagram of known straight line form irradiation structure and bending form irradiation structure of the present invention.Pass through straight line form irradiation structure 310 and bending form irradiation structure 320 in Fig. 3, illustrate respectively magnetic field absolute value composition and the electric field strength in y=0 cross section, X-Z plane, and the power that represents electric field with the different lightness of electric-field strength kilsyth basalt 300, lightness higher (color is more shallow) represents that electric field is more weak, otherwise lightness lower (color is darker) represents that electric field is stronger.In common straight line form irradiation structure 310, along with the height phenomenon of the different standing wave field flows of wavelength is apparent in view, such as: 0 degree phase place Electric Field Distribution 311 and 90 degree phase place Electric Field Distribution 312 signal.But in the middle of bending form irradiation structure 320, relatively spread along the radiation breakdown voltage, such as: 0 degree phase place Electric Field Distribution 321 and 90 degree phase place Electric Field Distribution 322 signal.This Distribution of Magnetic Field is in uniform radiation field, and in readable decipherment distance, can guarantee that relatively stable group reads rate.Particularly along antenna assembly 10 interfacial level Z axis, electric field strength (V/m) sharply descends, and electric field dense distribution around antenna assembly 10 interfaces.Therefore, can confirm to compare with general straight line form irradiation structure 310, in bending form irradiation structure 320 of the present invention, the shadow region of electric field strength is relatively less.
See also Fig. 4, Fig. 4 is according to the differing heights from the antenna assembly surface, the two-dimentional near field magnetic field component of antenna assembly has been expressed as the schematic diagram of two-dimentional scalar component form.As shown in Figure 4, formed periodically high field at X-Y plane internal magnetic field component centered by the X-axle, and, from antenna assembly 10 surfaces along the z-direction of principal axis, the 1Cm magnetic field intensity of often being separated by dies down, wherein, the first component form 410 is that highly signal, the second component form 420 when the 0mm is that signal, three-component form 430 during highly for 10mm is that signal, the 4th component form 440 during highly for 20mm is that signal when highly being 30mm and the 5th component form 450 are the signals when highly being 40mm.Actual test by read write line and antenna assembly 10 as can be known, because being subjected to the impact of antenna assembly 10 surface areas etc., guaranteeing uniform decipherment distance as benchmark, 5Cm above zone is the readable decipherment distance critical point of magnetic density.
See also Fig. 5, Fig. 5 is for using the schematic diagram of the reflection loss value of antenna assembly of the present invention in rack.The input 130 interconnection network analyzers of antenna assembly 10 in the present invention, in order to the result of testing reflection loss and show, uhf band 0.86GHz to the reflection loss in the 0.96GHz frequency range be-below 20dB.In the emulation experiment of reality, the impedance bandwidth take-10dB as benchmark is more than uhf band RFID centre frequency place has guaranteed 400MHz.Therefore, can confirm in the situation that consider the near field effect, also can guarantee sufficient impedance bandwidth to antenna assembly 10 when being installed in actual rack.Can load resistance 140 and λ/formations such as 4 open-circuits due to the end of antenna assembly in the present invention 10, therefore realized broadband impedance bandwidth.Namely, with be attached to rack in assets on the impedance bandwidth of every money electronic tag compare, the bandwidth of antenna assembly 10 is wider, and by factors such as mutually combining between load resistance 140 and bending microstripline 120 length, the parasitic factor 121, impedance and the reflection loss of antenna assembly 10 have been controlled.
See also Fig. 6, Fig. 6 be antenna assembly of the present invention according to the variation of variable height, the schematic diagram in its readable identification field.Take the X-Y plane area of antenna assembly 10 as benchmark, according to the variation of variable height Z, illustrate respectively readable identification field in Fig. 6.When antenna assembly 10 surface locations were made as Z=0, in the length of antenna assembly 10 and width field, the height actual measurement of stablizing reading electronic labels was 4cm.And in the sustained height of antenna assembly 10, the electronic label identification rate that departs from the X-Y plane position of antenna assembly 10 amplitudes will sharply descend.
See also Fig. 7, Fig. 7 is the system block diagrams of the real-time asset management system of answering the antenna assembly of apparatus bending microstripline, comprising: electronic tag 20, antenna assembly 10, read write line 30 and control end 40.Wherein, each electronic tag 20 is arranged at respectively corresponding asset equipment 21, and described electronic tag 20 stores corresponding assets information.In other words, interior of equipment cabinet can be deposited many Taiwan investments by layer and produce equipment 21, every Taiwan investment is produced on equipment 21 and is attached with an electronic tag 20, this electronic tag 20 has unique identification code and represents the assets information of equipment and corresponding with the asset equipment title on intrinsic assets inventory, can learn that its corresponding which Taiwan investment produces equipment 21 according to the identification code of electronic tag 20 in order to be positioned at the user of control end 40.On reality was implemented, electronic tag was the metal label of hyperfrequency (Ultra-High Frequency, UHF)
Every day, line apparatus 10 all had bending microstripline 120 (seeing also Fig. 1), and read the assets information of described electronic tag 20 in the electromagnetic coupled mode.Because antenna assembly 10 elaborates in aforementioned, therefore much more no longer to give unnecessary details at this.
Read write line 30 is electrically connected described antenna assembly 10, the assets information that reads in order to receive described antenna assembly 10.On reality is implemented, each rack has an antenna assembly 10, when the asset equipment that will follow the trail of simultaneously a plurality of racks, but the connectivity port lazy weight of read write line 30 is when offering all antenna assemblies 10, can first connect the antenna assembly 10 of each rack by the distributor 50 of connectivity port abundance, then, then distributor 50 and read write line 30 be interconnected, thus, can be extended to several neighboring cabinet parallel systems.And the assets information that the antenna assembly 10 of expansion was collected will by wireless or wired access point (Access Point, AP), be passed on and be recorded in database 41 toward control end 40.
In aforesaid way, communication interface is that the mode with radio communication or wire communication is connected with read write line 30, and the label information that reads in real time (being assets information) is conveyed to control end 40 and is recorded in database 41.At this moment, the operating system retrieval that the user can be by control end 40, move and extract the assets information that receives, and the change by the assets message and then learn action message value and the facilities information of asset equipment.In addition, but the user also the information such as newly acquiring, upgrade, move, sell, discard, replace of 41 pairs of assets of operating database and facility store in real time and manage.
Said antenna device 10 can be arranged on the doorframe of rack glass door or iron net door.Antenna assembly 10 is mainly to be made of following several parts: the one, and, dielectric substrate 110; The 2nd,, be formed on the one side of above-mentioned dielectric substrate 110, the bending microstripline 120 of radiated electromagnetic wave (or be called radiation loop); The 3rd,, be formed on the ground plane 111 of above-mentioned dielectric substrate 110 another sides; The 4th,, the vertical end of antenna possesses the feeder line of connection is arranged is the input 130 of purpose; The 5th,, connect the load resistance 140 that bends microstripline 120, and this load resistance 140 sees through through hole 150 electric connection ground planes 111.In addition, according to the present invention in subsidiary antenna outward appearance, use because antenna assembly 10 is mounted in the rack door and window, so consider attractive in appearancely, antenna assembly 10 width need narrower (in 10cm).Be subject to this limited ground plane impact, can there be some repercussion scatterings in antenna assembly 10.Therefore, according to the rack door and window ground plane situation of adhering to antenna assembly 10, the electric field/magnetic field on the ground plane 111 of antenna assembly 10 distributes different.When particularly the conductivity area of rack door and window is greater than ground plane 111, it can be utilized at the repercussion scattering problems and guarantees evenly to identify on the problem in field in antenna effective area.Want effectively to use the real-time asset management system in the present invention, and guarantee stable discrimination, the electronic tag 20 that is attached on every equipment can not break away from beyond antenna assembly 10 effective areas.And the attachment position of electronic tag 20 and antenna assembly 10 must guarantee that also relative effective area is for maximum.
Next, explain according to the part that the assets information that reads is used for asset management for control end 40, at first control end 40 receives and processes the data that receive most electronic tags 20 in identification range from read write line 30 successively, and it is the realtime running assets of particular cabinet that electronic tag 20 information of reading will be identified as.This process periodically updates at set intervals, if the event that electronic tag 20 information that the generation special time should read could not normally read, will be identified as the identification range that electronic tag 20 has broken away from the antenna assembly 10 of particular cabinet, and the information of respective electronic label 20 is fed back to the UI application program of control end 40, be sent on auxiliary output medium (PDP picture).The UI application program is presented at the detailed content of these information on the PDP picture of operating system, the asset stream that the operator can real-time management, monitor to.
On the contrary, the intrinsic assets information of particular device can be searched for by the real-time asset management system in the present invention.According to order request, intrinsic label assets information (being assets information) and the assets information of database that the antenna assembly 10 of the indivedual racks that connect by distributor 50 in rfid system recognizes compare, find out real-time matching information, and pass on the information such as position of particular cabinet equipment to the operator by system.Particularly make an inventory of the additional functions such as warning function is set, the alternate cycle of inventory assets is set, the assets mobile route is searched by assets in the working balance retrieval in additional definite term scope in application program, particular cabinet, can realize the real-time asset management pattern of intelligentized cabinet equipment.
By this process periodically repeatedly, realize the real-time asset management to particular device in rack.And, utilize movable passageway and portable RF ID equipment in the particular space field, can improve Systems balanth.
The assets information that rfid system (comprising: antenna assembly 10, electronic tag 20 and read write line 30) is obtained also can be connected with other systems such as ERP (EnterpriseResource Planning) by the Internet except being sent to control end 40.And, for the physical assets investigation that realizes efficient management, the maintenance that realizes following assets and system between parent company and remote branch company, prevent the budget waste that the loss because of current assets causes, can optimize stock's raw material.Simultaneously, replace naked eyes so far to confirm the also on-the-spot assets investigation business of hand-kept account book with the RFID intelligent management, not only improved the accuracy of business, and can complete rapidly the stock and interrogate and examine.In addition, based on standardized RFID coding scheme, provide stock control live analysis of data to all departments, support that better the company leader is comprehensive to stock control, the decision-making of system.
As mentioned above, be by limited embodiment and accompanying drawing in the present invention, specialized the specific items such as the compositing factor of bending microstripline and the parasitic factor.But these are the embodiment that provide in order to help to improve comprehensive understanding level.On the embodiment that the present invention can not only be confined to mention herein.In the middle of the field under the present invention, so long as the people of similar relevant knowledge is arranged, just can pass through these bases, carry out various forms of corrections and distortion.Therefore, thought of the present invention can not only be confined to be not only claim described later on the embodiment of above-mentioned explanation, with all the elements that these claim equalizations or equivalent transformation form, all will be considered as being included in the middle of thought range of the present invention.
Claims (10)
1. a near field read-write antenna assembly, is characterized in that, comprising:
The dielectric substrate, the first surface of this dielectric substrate is formed with ground plane;
The bending microstripline in order to being arranged on second of this dielectric substrate, and reads at least one electronic tag signal in the electromagnetic coupled mode;
Input in order to being arranged on the first end of this dielectric substrate, and is electrically connected head end and a read write line of this bending microstripline;
Load resistance in order to being arranged on the second end of this dielectric substrate, and is electrically connected the tail end of this bending microstripline; And
Through hole is in order to be electrically connected this ground plane and this load resistance to form short-circuit loop.
2. antenna assembly as claimed in claim 1, is characterized in that, this bending microstripline is the band shape bending irradiation structure body of co-planar waveguide or ground connection co-plane waveguide, and is sinusoidal wave in order to property performance period near field.
3. antenna assembly as claimed in claim 1, is characterized in that, the length of this antenna assembly and width are adjusted according to the total length of this bending microstripline, and its adjusting range is expanded to λ/2 from λ/4.
4. antenna assembly as claimed in claim 1, is characterized in that, this bending microstripline is provided with the parasitic factor in bending place skew one distance, and the length of described distance and the parasitic factor is adjusted according to antenna impedance bandwidth and reflection loss design variable at least.
5. antenna assembly as claimed in claim 1, is characterized in that, this antenna assembly is the near field antenna of ultra-high frequency band.
6. use the real-time asset management system of near field read-write antenna assembly as claimed in claim 1 for one kind, it is characterized in that, this system comprises:
At least one electronic tag, each electronic tag are arranged at respectively on corresponding asset equipment, and described electronic tag stores corresponding assets information;
At least one antenna assembly, every day, line apparatus all had a bending microstripline, and read the assets information of described electronic tag in the electromagnetic coupled mode;
One read write line, this read write line is electrically connected described antenna assembly, the assets information that reads in order to receive described antenna assembly; And
One control end in order to interconnecting by a communication interface and this read write line, and is stored to a database to be used for asset management with the assets information that described antenna assembly reads.
7. system as claimed in claim 6, is characterized in that, this electronic tag is the metal label of hyperfrequency.
8. system as claimed in claim 6, is characterized in that, this communication interface is to interconnect with the mode of radio communication or wire communication and this read write line.
9. system as claimed in claim 6, is characterized in that, this read write line is electrically connected by at least one distributor and described antenna assembly.
10. system as claimed in claim 6, is characterized in that, this control end continues to receive every an interval time assets information, and produce when not receiving assets information yet this interval time and show an announcement information surpassing.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638354A (en) * | 2013-11-07 | 2015-05-20 | 富士通株式会社 | Antenna apparatus |
| CN106785331A (en) * | 2016-11-16 | 2017-05-31 | 刘启达 | It is applied to the intelligent counter system of the linear polarization near field antenna of gold and jewelry industry |
| CN108767430A (en) * | 2018-07-10 | 2018-11-06 | 南通物怿智能科技有限公司 | antenna for intelligent cabinet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101052775A (en) * | 2004-11-02 | 2007-10-10 | 传感电子公司 | RFID near field microstrip antenna |
| US20080204329A1 (en) * | 2007-02-27 | 2008-08-28 | Yasumitsu Miyazaki | Antenna, And Radio-Frequency Identification Tag |
| CN201751904U (en) * | 2010-08-11 | 2011-02-23 | 中兴通讯股份有限公司 | Electronic label reader |
| CN102110872A (en) * | 2011-03-10 | 2011-06-29 | 江苏拓元科技发展有限公司 | Radio frequency identification tag antenna applicable to non-metallic surface |
-
2011
- 2011-12-22 CN CN201110435972.XA patent/CN103178337B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101052775A (en) * | 2004-11-02 | 2007-10-10 | 传感电子公司 | RFID near field microstrip antenna |
| US20080204329A1 (en) * | 2007-02-27 | 2008-08-28 | Yasumitsu Miyazaki | Antenna, And Radio-Frequency Identification Tag |
| CN201751904U (en) * | 2010-08-11 | 2011-02-23 | 中兴通讯股份有限公司 | Electronic label reader |
| CN102110872A (en) * | 2011-03-10 | 2011-06-29 | 江苏拓元科技发展有限公司 | Radio frequency identification tag antenna applicable to non-metallic surface |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104638354A (en) * | 2013-11-07 | 2015-05-20 | 富士通株式会社 | Antenna apparatus |
| CN104638354B (en) * | 2013-11-07 | 2017-05-31 | 富士通株式会社 | Antenna assembly |
| CN106785331A (en) * | 2016-11-16 | 2017-05-31 | 刘启达 | It is applied to the intelligent counter system of the linear polarization near field antenna of gold and jewelry industry |
| CN106785331B (en) * | 2016-11-16 | 2019-03-19 | 刘启达 | The intelligent counter system of linear polarization near field antenna applied to gold and jewelry industry |
| CN108767430A (en) * | 2018-07-10 | 2018-11-06 | 南通物怿智能科技有限公司 | antenna for intelligent cabinet |
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| CN103178337B (en) | 2016-01-20 |
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