CN103679090A - Method and system for detecting object passing - Google Patents
Method and system for detecting object passing Download PDFInfo
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- CN103679090A CN103679090A CN201210476823.2A CN201210476823A CN103679090A CN 103679090 A CN103679090 A CN 103679090A CN 201210476823 A CN201210476823 A CN 201210476823A CN 103679090 A CN103679090 A CN 103679090A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000010287 polarization Effects 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 14
- 230000005684 electric field Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 239000004020 conductor Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
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Abstract
The invention relates to a method and a system for detecting the passing of an object, wherein the method comprises the following steps: providing an object passing area; (b) disposing a radio identification reader on a side of the object-passing region, the radio identification reader having a first polarized antenna capable of transmitting a first polarized wave to a metal portion of a passing object, the metal portion capable of reflecting the first polarized wave and converting the first polarized wave into a second polarized wave having an opposite polarization direction; and (c) arranging a wireless identification tag in the reflection direction of the first polarized wave, wherein the wireless identification tag is provided with a second polarized antenna, and the polarization direction of the second polarized antenna is opposite to that of the first polarized antenna, so that the second polarized antenna can receive the second polarized wave to actuate the wireless identification tag, and further, the object passing is judged.
Description
Technical field
The invention relates to a kind of object detecting method and system thereof, a kind of method of particularly passing through about inspected object and system thereof.
Background technology
The method that known inspected object is passed through mostly be take optical detecting method as main, as China announces " method that inspected object is passed through " that patent is disclosed for No. I242652, it is to use a plurality of light-emitting components and a plurality of receiving element to form detection system, and utilizes light blocking method to carry out the interpretation that object passes through.Yet above-mentioned optical detecting method, because of the considerable luminous and receiving element of usage quantity, causes detection system to build cost and significantly improves.In addition, use in a large number luminous and receiving element also can make the power consumption of detection system significantly increase.
Therefore, the method and the system thereof that are necessary to provide the inspected object of an innovation and tool progressive to pass through, to address the above problem.
Summary of the invention
The invention provides a kind of method that inspected object is passed through, the method comprises the following steps: (a) provide an object to pass through region; (b) a wireless identification reader is set and passes through a side in region in this object, this wireless identification reader has one first poliarizing antenna, this first poliarizing antenna can be launched one first polarized wave to by a metal part of object, and this metal part can reflect this first polarization and involve and convert this first polarized wave to one second polarized wave that polarised direction is contrary; And (c) wireless identification label is set in the reflection direction of this first polarized wave, this wireless identification label has one second poliarizing antenna, the polarised direction of this second poliarizing antenna is contrary with the polarised direction of this first poliarizing antenna, so that this second poliarizing antenna can receive this second polarized wave and this wireless identification label of start, and then judge object and pass through.
The system that the present invention also provides a kind of inspected object to pass through, comprise: at least one wireless identification reader, to be arranged at an object by a side in region, this wireless identification reader has one first poliarizing antenna, this first poliarizing antenna can be launched one first polarized wave to by a metal part of object, and this metal part can reflect this first polarization and involve and convert this first polarized wave to one second polarized wave that polarised direction is contrary; And at least one wireless identification label, it is the reflection direction that is arranged at this first polarized wave, this wireless identification label has one second poliarizing antenna, the polarised direction of this second poliarizing antenna is contrary with the polarised direction of this first poliarizing antenna, this second poliarizing antenna can receive this second polarized wave and this wireless identification label of start, and then judges object and pass through.
The present invention is arranged at respectively wireless identification reader and wireless identification label by two kinds of contrary poliarizing antennas of polarised direction, and there is by the reflection polarized wave behind antenna polarization ripple incident metal surface the characteristic that polarised direction is reversed, realize the detection that object passes through.The present invention has reduction system and builds cost, reduces systematic electricity loss, prevents that adjacent multizone object from disturbing by detection and the effect of elevator system fiduciary level.
Accompanying drawing explanation
Fig. 1 shows the process flow diagram of the method that inspected object of the present invention is passed through;
Fig. 2 shows the schematic diagram of the system that inspected object of the present invention is passed through;
After the start of Fig. 3 display radio identification label, read schematic diagram;
Fig. 4 shows the electric-field vector distribution plan of circularly polarised wave;
Fig. 5 shows schematic diagram left-handed and right-handed circular polarization ripple;
Fig. 6 shows that the incident of electromagnetic wave incident one perfect conductor involves reflection wave schematic diagram;
Fig. 7 shows the electric-field vector distribution plan of elliptically polarised wave;
Fig. 8 shows schematic diagram left-handed and dextrorotation elliptically polarised wave;
Fig. 9 shows the message processing flow figure of the system that inspected object of the present invention is passed through;
Figure 10 shows the schematic diagram of the system that second embodiment of the invention inspected object is passed through; And
Figure 11 shows the message processing flow figure of the system that second embodiment of the invention inspected object is passed through.
[main element label declaration]
10 wireless identification reader 11 first poliarizing antennas
20 object 21 metal parts
30 wireless identification label 31 second poliarizing antennas
A object is by region ani incident wave
Anr reflection wave Ei incident electric field component
The magnetic field of Er reflected field component Hi incident wave
The magnetic field R rod member of Hr reflection wave
Another first polarized wave of W1 the first polarized wave W1'
Another second polarized wave of W2 the second polarized wave W2'
Embodiment
Fig. 1 shows the process flow diagram of the method that inspected object of the present invention is passed through.Fig. 2 shows the schematic diagram of the system that inspected object of the present invention is passed through.Please refer to step S11 and Fig. 2 of Fig. 1, provide an object by region a, this object is selected from following a kind of by region a: porte-cochere, production line and logistics district.In the present embodiment, this object is vehicle channel by region a.
Step S12 and Fig. 2 please refer to Fig. 1, one wireless identification reader (RFID reader) 10 is set and in this object, passes through a side of region a, this wireless identification reader 10 has one first poliarizing antenna 11, this first poliarizing antenna 11 can be launched one first polarized wave W1 to by a metal part 21 of object 20, and this metal part 21 can reflect this first polarized wave W1 and convert this first polarized wave W1 to one second polarized wave W2 that polarised direction is contrary.In the present embodiment, this object 20 is vehicle, and this metal part 21 is vehicle sheet metal part.
In addition, it is upper that this wireless identification reader 10 can be fixed on a rod member R, and that this first poliarizing antenna 11 is selected from is following a kind of: circular polarized antenna and elliptic polarized antenna.
Step S13 and Fig. 2 please refer to Fig. 1, one wireless identification label (RFID label) 30 is set in the reflection direction of this first polarized wave W1, this wireless identification label 30 has one second poliarizing antenna 31, the polarised direction of this second poliarizing antenna 31 is contrary with the polarised direction of this first poliarizing antenna 11, so that this second poliarizing antenna 31 can receive this second polarized wave W2 and this wireless identification label 30 of start, and then judge object and pass through.
Refer to Fig. 3, it is the schematic diagram that reads after the start of display radio identification label.After these wireless identification label 30 starts, this second poliarizing antenna 31 can pass through the metal part 21 of object 20 to being somebody's turn to do by another second polarized wave of transmitting W2', this metal part 21 can reflect this another the second polarized wave W2' and convert this another the second polarized wave W2' to another first polarized wave W1' that polarised direction is contrary, and the first poliarizing antenna 11 of this wireless identification reader 10 can receive this another the first polarized wave W1' and judge object and pass through.
In the present embodiment, it is upper that this wireless identification label 30 also can be fixed on this rod member R, and with this wireless identification reader 10 segment distance of being separated by, and that this second poliarizing antenna 31 is selected from is following a kind of: circular polarized antenna and elliptic polarized antenna.
In addition, because the polarised direction of this second poliarizing antenna 31 is contrary with the polarised direction of this first poliarizing antenna 11, therefore, when not having object to pass through, this first polarized wave W1 that the first poliarizing antenna 11 of this wireless identification reader 10 is launched cannot be converted into this second polarized wave W2 that polarised direction is contrary, and this second poliarizing antenna 31 cannot receive this first polarized wave W1 that polarised direction is different, therefore this wireless identification label 30 cannot and read by start; Otherwise, when having object to pass through, this first polarized wave W1 that the first poliarizing antenna 11 of this wireless identification reader 10 is launched can be reflected and convert this second polarized wave W2 that polarised direction is contrary to, this second poliarizing antenna 31 can receive this second polarized wave W2 and this wireless identification label 30 of start, and then judges object and pass through.
Fig. 4 shows the electric-field vector distribution plan of circularly polarised wave.Fig. 5 shows schematic diagram left-handed and right-handed circular polarization ripple.Please refer to Fig. 2, Fig. 4 and Fig. 5, in the present embodiment, when this first poliarizing antenna 11 and this second poliarizing antenna 31 are circular polarized antenna, for meeting the polarised direction condition contrary with the polarised direction of this first poliarizing antenna 11 of this second poliarizing antenna 31, if the first poliarizing antenna 11 of this wireless identification reader 10 is right-handed circular polarization antenna, the second poliarizing antenna 31 of this wireless identification label 30 is necessary for left-hand circular polarization antenna, now, this first polarized wave is right-handed circular polarization ripple, and this second polarized wave is left-hand circular polarization ripple.
In another embodiment, if the first poliarizing antenna 11 of this wireless identification reader 10 is left-hand circular polarization antenna, the second poliarizing antenna 31 of this wireless identification label 30 is necessary for right-handed circular polarization antenna, now, this first polarized wave is left-hand circular polarization ripple, and this second polarized wave is right-handed circular polarization ripple.
Refer to Fig. 6, it is that the incident that shows electromagnetic wave incident one perfect conductor involves reflection wave schematic diagram.In Electromagnetic theory, when a uniform plane wave incident one perfect conductor, boundary condition at the interface of two media need meet electric field tangential component continuity, and on the surface of perfect conductor, its electric field tangential component is zero, make | Ei (incident electric field component) |+| Er (reflected field component) |=0, that is Er=-Ei, wherein the direction of the magnetic field H r of the magnetic field H i of incident wave ani and reflection wave anr is constant, and electromagnetic direction of an electric field is just 180 degree reflections.Therefore,, if the plane wave of incident is circularly polarised wave, after reflection, be still circularly polarised wave, but the sense of rotation of circular polarisation is just contrary, in other words, after right (left side) hand circular polarization ripple incident one perfect conductor, its reflection wave will convert a left side (right side) hand circular polarization ripple to; Similarly, when right (left side), revolve after the perfect conductor of elliptically polarised wave incident one, its reflection wave will convert a left side (right side) to and revolve elliptically polarised wave.
Fig. 7 shows the electric-field vector distribution plan of elliptically polarised wave.Fig. 8 shows schematic diagram left-handed and dextrorotation elliptically polarised wave.Please refer to Fig. 7 and Fig. 8, in another embodiment, when this first poliarizing antenna 11 and this second poliarizing antenna 31 are elliptic polarized antenna, for meeting the polarised direction condition contrary with the polarised direction of this first poliarizing antenna 11 of this second poliarizing antenna 31, if the first poliarizing antenna 11 of this wireless identification reader 10 is dextrorotation elliptic polarized antenna, the second poliarizing antenna 31 of this wireless identification label 30 is necessary for left-handed elliptic polarized antenna, now, this first polarized wave is dextrorotation elliptically polarised wave, and this second polarized wave is left-hand elliptically polarized wave.
In another embodiment, if the first poliarizing antenna 11 of this wireless identification reader 10 is left-handed elliptic polarized antenna, the second poliarizing antenna 31 of this wireless identification label 30 is necessary for dextrorotation elliptic polarized antenna, now, this first polarized wave is left-hand elliptically polarized wave, and this second polarized wave is dextrorotation elliptically polarised wave.
Referring again to Fig. 2, the system that inspected object of the present invention is passed through comprises a wireless identification reader (RFID reader) 10 and one wireless identification label (RFID label) 30.This wireless identification reader 10 is to be arranged at an object by a side of region a, this wireless identification reader 10 has one first poliarizing antenna 11, this first poliarizing antenna 11 can be launched one first polarized wave W1 to by a metal part 21 of object 20, and this metal part 21 can reflect this first polarized wave W1 and convert this first polarized wave W1 to one second polarized wave W2 that polarised direction is contrary.In the present embodiment, this object is vehicle channel by region a, and this object 20 is vehicle, and this metal part 21 is vehicle sheet metal part.In addition, it is upper that this wireless identification reader 10 can be fixed on a rod member R, and that this first poliarizing antenna 11 is selected from is following a kind of: circular polarized antenna and elliptic polarized antenna.
This wireless identification label 30 is the reflection directions that are arranged at this first polarized wave W1, this wireless identification label 30 has one second poliarizing antenna 31, the polarised direction of this second poliarizing antenna 31 is contrary with the polarised direction of this first poliarizing antenna 11, this second poliarizing antenna 31 can receive this second polarized wave W2 and this wireless identification label 30 of start, and then judges object and pass through.In the present embodiment, it is upper that this wireless identification label 30 also can be fixed on this rod member R, and with this wireless identification reader 10 segment distance of being separated by, and that this second poliarizing antenna 31 is selected from is following a kind of: circular polarized antenna and elliptic polarized antenna.
Fig. 9 shows the message processing flow figure of the system that inspected object of the present invention is passed through.Please refer to the step S91 of Fig. 3 and Fig. 9, start RFID reader.
Refer to step S92, read RFID label information, it is to judge whether to read RFID label information, judge whether to read and detect with RFID label information and judge whether to read other RFID label information.
Refer to step S93, judge vehicle detection state, it is when reading detection with RFID label information, judges that vehicle being detected passes through, and detected state is made as to TRUE (correctly).
Refer to Figure 10, it is the schematic diagram of the system that shows that second embodiment of the invention inspected object is passed through.The system that second embodiment of the invention inspected object is passed through comprises two wireless identification readers (RFID reader), 10 and two wireless identification labels (RFID label) 30.These wireless identification readers 10 are to be arranged at respectively an object by the both sides of region a, respectively this wireless identification reader 10 has one first poliarizing antenna 11, respectively this first poliarizing antenna 11 can be launched one first polarized wave W1 to by a metal part 21 of object 20, and this metal part 21 can reflect respectively this first polarized wave W1 and convert this first polarized wave W1 respectively to one second polarized wave W2 that polarised direction is contrary.
These wireless identification labels 30 are to be arranged at respectively the respectively reflection direction of this first polarized wave W1, respectively this wireless identification label 30 has one second poliarizing antenna 31, respectively the polarised direction of this second poliarizing antenna 31 system is contrary with the polarised direction of this first poliarizing antenna 11 respectively, respectively this second poliarizing antenna 31 can receive respectively this second polarized wave W2 and start this wireless identification label 30 respectively, and then judges object and pass through.
Figure 11 shows the message processing flow figure of the system that second embodiment of the invention inspected object is passed through.Please refer to the step S111 of Figure 10 and Figure 11, start two RFID readers.
Refer to step S112, read RFID label information, it is to judge whether to read RFID label information, judge whether to read and detect with RFID label information and judge whether to read other RFID label information.
Refer to step S113, judge vehicle detection state, it must be read simultaneously and detect with RFID label A and B, and is all TRUE when (correctly) in the detected state of both sides reader, just judges and vehicle detected by reader placement.
Above-described embodiment is only explanation principle of the present invention and effect thereof, and unrestricted the present invention, so those skilled in the art modify to above-described embodiment and change still not de-spirit of the present invention.Claim scope of the present invention answers claim scope described above listed.
Claims (24)
1. the method that inspected object is passed through, comprises the following steps:
(a) provide an object to pass through region;
(b) a wireless identification reader is set and passes through a side in region in this object, this wireless identification reader has one first poliarizing antenna, this first poliarizing antenna can be launched one first polarized wave to by a metal part of object, and this metal part can reflect this first polarization and involve and convert this first polarized wave to one second polarized wave that polarised direction is contrary; And
(c) wireless identification label is set in the reflection direction of this first polarized wave, this wireless identification label has one second poliarizing antenna, the polarised direction of this second poliarizing antenna is contrary with the polarised direction of this first poliarizing antenna, so that this second poliarizing antenna can receive this second polarized wave and this wireless identification label of start, and then judge object and pass through.
2. the method that inspected object according to claim 1 is passed through, wherein in step (b), the first poliarizing antenna of this wireless identification reader is selected from following a kind of: circular polarized antenna and elliptic polarized antenna.
3. the method that inspected object according to claim 1 is passed through, wherein in step (c), the second poliarizing antenna of this wireless identification label is selected from following a kind of: circular polarized antenna and elliptic polarized antenna.
4. the method that inspected object according to claim 1 is passed through, wherein in step (b), the first poliarizing antenna of this wireless identification reader is right-handed circular polarization antenna, and this first polarized wave is right-handed circular polarization ripple, and this second polarized wave is left-hand circular polarization ripple; In step (c), the second poliarizing antenna of this wireless identification label is left-hand circular polarization antenna.
5. the method that inspected object according to claim 1 is passed through, wherein in step (b), the first poliarizing antenna of this wireless identification reader is left-hand circular polarization antenna, and this first polarized wave is left-hand circular polarization ripple, and this second polarized wave is right-handed circular polarization ripple; In step (c), the second poliarizing antenna of this wireless identification label is right-handed circular polarization antenna.
6. the method that inspected object according to claim 1 is passed through, wherein in step (b), the first poliarizing antenna of this wireless identification reader is dextrorotation elliptic polarized antenna, and this first polarized wave is dextrorotation elliptically polarised wave, and this second polarized wave is left-hand elliptically polarized wave; In step (c), the second poliarizing antenna of this wireless identification label is left-handed elliptic polarized antenna.
7. the method that inspected object according to claim 1 is passed through, wherein in step (b), the first poliarizing antenna of this wireless identification reader is left-handed elliptic polarized antenna, and this first polarized wave is left-hand elliptically polarized wave, and this second polarized wave is dextrorotation elliptically polarised wave; In step (c), the second poliarizing antenna of this wireless identification label is dextrorotation elliptic polarized antenna.
8. the method for passing through according to the inspected object described in any one in claim 1 to 7, wherein in step (c), after this wireless identification label start, this second poliarizing antenna can be launched another second polarized wave to passing through the metal part of object, this metal part can reflect this another the second polarization and involve and convert this another the second polarized wave to another first polarized wave that polarised direction is contrary, and the first poliarizing antenna of this wireless identification reader can receive this another the first polarized wave and judge object and pass through.
9. the method that inspected object according to claim 1 is passed through, wherein this object is selected from following a kind of by region: porte-cochere, production line and logistics district.
10. the method that inspected object according to claim 1 is passed through, wherein this object is vehicle.
The method that 11. inspected object according to claim 10 are passed through, wherein the metal of this object is partly the sheet metal part of vehicle.
12. 1 kinds of systems that inspected object is passed through, comprising:
At least one wireless identification reader, to be arranged at an object by a side in region, this wireless identification reader has one first poliarizing antenna, this first poliarizing antenna can be launched one first polarized wave to by a metal part of object, and this metal part can reflect this first polarization and involve and convert this first polarized wave to one second polarized wave that polarised direction is contrary; And
At least one wireless identification label, it is the reflection direction that is arranged at this first polarized wave, this wireless identification label has one second poliarizing antenna, the polarised direction of this second poliarizing antenna is contrary with the polarised direction of this first poliarizing antenna, this second poliarizing antenna can receive this second polarized wave and this wireless identification label of start, and then judges object and pass through.
The system that 13. inspected object according to claim 12 are passed through, wherein the first poliarizing antenna of this wireless identification reader is selected from following a kind of: circular polarized antenna and elliptic polarized antenna.
The system that 14. inspected object according to claim 12 are passed through, wherein the second poliarizing antenna of this wireless identification label is selected from following a kind of: circular polarized antenna and elliptic polarized antenna.
The system that 15. inspected object according to claim 12 are passed through, wherein the first poliarizing antenna of this wireless identification reader is right-handed circular polarization antenna, this first polarized wave is right-handed circular polarization ripple, this second polarized wave is left-hand circular polarization ripple, and the second poliarizing antenna of this wireless identification label is left-hand circular polarization antenna.
The system that 16. inspected object according to claim 12 are passed through, wherein the first poliarizing antenna of this wireless identification reader is left-hand circular polarization antenna, this first polarized wave is left-hand circular polarization ripple, this second polarized wave is right-handed circular polarization ripple, and the second poliarizing antenna of this wireless identification label is right-handed circular polarization antenna.
The system that 17. inspected object according to claim 12 are passed through, wherein the first poliarizing antenna of this wireless identification reader is dextrorotation elliptic polarized antenna, this first polarized wave is dextrorotation elliptically polarised wave, this second polarized wave is left-hand elliptically polarized wave, and the second poliarizing antenna of this wireless identification label is left-handed elliptic polarized antenna.
The system that 18. inspected object according to claim 12 are passed through, wherein the first poliarizing antenna of this wireless identification reader is left-handed elliptic polarized antenna, this first polarized wave is left-hand elliptically polarized wave, this second polarized wave is dextrorotation elliptically polarised wave, and the second poliarizing antenna of this wireless identification label is dextrorotation elliptic polarized antenna.
19. systems of passing through according to claim 12 to the inspected object described in any one in 18, wherein this second poliarizing antenna can be launched another second polarized wave to passing through the metal part of object, this metal part can reflect this another the second polarization and involve and convert this another the second polarized wave to another first polarized wave that polarised direction is contrary, and the first poliarizing antenna of this wireless identification reader can receive this another the first polarized wave and judge object and pass through.
The system that 20. inspected object according to claim 12 are passed through, wherein this object is selected from following a kind of by region: porte-cochere, production line and logistics district.
The system that 21. inspected object according to claim 12 are passed through, wherein this object is vehicle.
The system that 22. inspected object according to claim 21 are passed through, wherein the metal of this object is partly the sheet metal part of vehicle.
The system that 23. inspected object according to claim 12 are passed through, also comprises a rod member, and this wireless identification reader is fixed on this rod member.
The system that 24. inspected object according to claim 23 are passed through, wherein this wireless identification label is fixed on this rod member, and with this wireless identification reader segment distance of being separated by.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101132238 | 2012-09-05 | ||
| TW101132238A TWI453448B (en) | 2012-09-05 | 2012-09-05 | Methods and systems for detecting objects through |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103679090A true CN103679090A (en) | 2014-03-26 |
| CN103679090B CN103679090B (en) | 2016-12-21 |
Family
ID=50316590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210476823.2A Expired - Fee Related CN103679090B (en) | 2012-09-05 | 2012-11-21 | Method and system for detecting object passing |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103679090B (en) |
| TW (1) | TWI453448B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114747088A (en) * | 2019-11-18 | 2022-07-12 | 标致雪铁龙汽车股份有限公司 | Identification element detection device for a system and having a relay super-surface |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI650730B (en) * | 2014-07-21 | 2019-02-11 | 中國鋼鐵股份有限公司 | Carrier pallet mobile identification system |
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| JP2001273530A (en) * | 2000-03-24 | 2001-10-05 | Toyo Commun Equip Co Ltd | Gate system |
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| US7489240B2 (en) * | 2005-05-03 | 2009-02-10 | Qualcomm, Inc. | System and method for 3-D position determination using RFID |
| US7922085B2 (en) * | 2007-04-13 | 2011-04-12 | Aps Technology Group, Inc. | System, method, apparatus, and computer program product for monitoring the transfer of cargo to and from a transporter |
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2012
- 2012-09-05 TW TW101132238A patent/TWI453448B/en active
- 2012-11-21 CN CN201210476823.2A patent/CN103679090B/en not_active Expired - Fee Related
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| JP2001273530A (en) * | 2000-03-24 | 2001-10-05 | Toyo Commun Equip Co Ltd | Gate system |
| CN101038628A (en) * | 2006-03-16 | 2007-09-19 | 富士通株式会社 | Rfid reader/writer |
| US20070222608A1 (en) * | 2006-03-16 | 2007-09-27 | Fujitsu Limited | RFID reader/writer |
| CN101783696A (en) * | 2009-01-20 | 2010-07-21 | 广升运有限公司 | Interference-free antenna module and WiFi network system using same |
| CN102254206A (en) * | 2010-05-21 | 2011-11-23 | 上海复莱信息技术有限公司 | Electronic tag device for special occasions |
| CN102306266A (en) * | 2011-07-07 | 2012-01-04 | 上海集成电路技术与产业促进中心 | Simulator for radio frequency identification |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114747088A (en) * | 2019-11-18 | 2022-07-12 | 标致雪铁龙汽车股份有限公司 | Identification element detection device for a system and having a relay super-surface |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201411165A (en) | 2014-03-16 |
| TWI453448B (en) | 2014-09-21 |
| CN103679090B (en) | 2016-12-21 |
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