WO2006011187A1 - 無線タグ通信システム - Google Patents
無線タグ通信システム Download PDFInfo
- Publication number
- WO2006011187A1 WO2006011187A1 PCT/JP2004/010499 JP2004010499W WO2006011187A1 WO 2006011187 A1 WO2006011187 A1 WO 2006011187A1 JP 2004010499 W JP2004010499 W JP 2004010499W WO 2006011187 A1 WO2006011187 A1 WO 2006011187A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tag
- reader
- communication system
- communication
- devices
- Prior art date
Links
- 238000004891 communication Methods 0.000 title claims abstract description 122
- 230000010287 polarization Effects 0.000 claims description 53
- 238000012545 processing Methods 0.000 claims description 13
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 10
- 230000005284 excitation Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000012790 confirmation Methods 0.000 description 3
- 101100545272 Caenorhabditis elegans zif-1 gene Proteins 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10356—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers using a plurality of antennas, e.g. configurations including means to resolve interference between the plurality of antennas
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10366—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications
- G06K7/10415—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM
- G06K7/10425—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM the interrogation device being arranged for interrogation of record carriers passing by the interrogation device
- G06K7/10435—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM the interrogation device being arranged for interrogation of record carriers passing by the interrogation device the interrogation device being positioned close to a conveyor belt or the like on which moving record carriers are passing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/10—Polarisation diversity; Directional diversity
Definitions
- the present invention relates to a wireless tag communication system in which a tag and a reader / writer device (hereinafter referred to as RW device) perform wireless communication.
- RW device a reader / writer device
- a wireless tag communication system is a wireless communication between a tag and an RW device.
- the tag is equipped with a dipole antenna A and a dipole antenna B, and the IC of the tag has a phase difference of 90 °.
- circularly polarized waves are generated from the dipole antennas A and B (see, for example, Patent Document 1).
- the tag does not have a power supply inside, when the dipole antennas A and B receive a high-frequency signal transmitted from the RW device, the high-frequency signal is rectified and electric power is stored. Conduct wireless communication with RW equipment using electric power.
- the communication area between the tag and the RW device is limited to a few meters.
- the communication area must be continuous without interruption.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-249871 (pages 12 to 13, FIG. 2)
- the conventional RFID tag communication system is configured as described above, for example, when the communication areas of the RW device A and the RW device B overlap, In this area, the tag can perform wireless communication with both RW device A and RW device B.
- the tag when the tag is performing wireless communication with RW device A, if RW device B transmits a signal, the signal will interfere with the signal transmitted from RW device A, and the tag and R There was a problem that wireless communication between W device A might be interrupted.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a wireless tag communication system that can prevent signal interference even when the communication area is expanded.
- the polarization of adjacent reader / writer devices is changed.
- the tag switches the direction of polarization as it moves.
- FIG. 1 is a configuration diagram showing a wireless tag communication system according to a first embodiment of the present invention.
- FIG. 2 is a configuration diagram showing a tag of the wireless tag communication system according to the first embodiment of the present invention.
- FIG. 3 is a configuration diagram showing a wireless tag communication system according to a second embodiment of the present invention.
- FIG. 4 is a configuration diagram showing a wireless tag communication system according to a third embodiment of the present invention.
- FIG. 5 is a configuration diagram showing a tag of a wireless tag communication system according to a fourth embodiment of the present invention.
- FIG. 1 is a block diagram showing a wireless tag communication system according to Embodiment 1 of the present invention.
- a pedestal 1 is installed on a production line, for example, and a tag 69 is affixed to move an article 25 that is one-dimensionally moved.
- the article 25 is moving in the right direction.
- Articles 2-5 are, for example, in-process products and may have different sizes.
- the tags 6-9 are affixed to the article 25, hold specific information about the article 25 (for example, identification information of the article), etc.
- a function for carrying out communication is provided.
- Tags 6-9 have a function to switch the direction of polarization with movement.
- the RW devices 10-12 are arranged one-dimensionally along the direction in which the base 1 moves the article 2-5, and the communication area 13 of the RW device 10 and the communication area 14 of the RW device 11 And the communication area 14 of the RW device 11 and the communication area 15 of the RW device 12 are partially overlapped.
- RW devices 10-12 perform wireless communication with tags 6-9 and read / write information held in tags 6-9, but the polarization of RW devices 10, 12 is set to V polarization.
- the polarization of the RW device 11 is set to H polarization. In other words, the adjacent RW devices are set so that their polarizations are orthogonal.
- FIG. 2 is a configuration diagram showing a tag of the wireless tag communication system according to the first embodiment of the present invention.
- the dipole antenna 22 When the dipole antenna 22 is set in an excitable state by the IC 23, the dipole antenna 22 excites it if it exists in the communication area 14 of the RW device 11. When the dipole antenna 22 is excited, a right arrow “ ⁇ ” is described inside the tag in FIG.
- the IC 23 When the IC 23 receives the switching request signal from the RW devices 10-12, the IC 23 performs switching processing of the dipole antennas 21 and 22 that are ready for excitation. That is, if the dipole antenna currently in the excitable state is the dipole antenna 21, the dipole antenna 22 is set to the excitable state, and if the dipole antenna in the excitable state is the dipole antenna 22, the dipole antenna 21 Is set to the excitable state.
- IC23 has a built-in memory for storing information unique to article 2-5, and when dipole antennas 21 and 22 receive a call signal, which is a high-frequency signal transmitted from RW device 1012, The call signal is rectified and converted into drive power. It has a built-in rectifier that stores power.
- the tag 6-9 attached to the article 25 stores information related to the previous process of the article 25, information related to the future process, test results, etc. as specific information related to the article 2-5. Yes.
- Communication area 13 15 corresponds to the work area of the newly added process.
- the tag 6-9 holds information on the process added in the communication area 13-15, and the process is added accordingly. Information such as the process added in communication area 13-15 and the results of tests performed there are sequentially recorded in tags 6-9.
- the communication area 13 of the RW device 10 and the communication area 14 of the RW device 11 are overlapped, and the communication area 14 of the RW device 11 and the communication area 15 of the RW device 12 are overlapped.
- the RW device 10 12 and the tag 6-9 need to be separated from each other to some extent, and the tag 6-9 is different from the adjacent RW device 10-12. Conduct wireless communication.
- tags 6 and 7 perform wireless communication with RW device 10
- tags 8 and 9 perform wireless communication with RW device 11.
- the tag 6 exists only in the communication area 13 of the RW device 10, and the tags 8 and 9 exist only in the communication area 14 of the RW device 11. There will be no signal interference by the equipment.
- the tag 7 is connected to the communication area 13 of the RW device 10 and the communication area 14 of the RW device 11.
- the tag 7 is performing wireless communication with the RW device 10 and the RW device 11 transmits a signal
- the signal is mixed with the signal transmitted from the RW device 10. there's a possibility that.
- the dipole antenna 21 when the tag 7 attached to the article 3 is moved into the communication area 13 of the RW device 10, the dipole antenna 21 is set in an excitable state (a state of V polarization).
- the dipole antenna 21 receives an interrogation signal that is a high-frequency signal transmitted from the RW device 10.
- the interrogation signal is a signal that the RW device transmits to detect a tag that exists in its own communication area, and such a tag is a signal that is used for power storage. is there.
- the rectification unit built in the IC23 of tag 7 rectifies the interrogation signal and converts it into driving power. Accumulate that power.
- the IC 23 of the tag 7 can subsequently operate using the power.
- the IC 23 of the tag 7 transmits a response signal to the challenge signal to the RW device 10 via the dipole antenna 21. .
- the dipole antenna 21 receives the information read request signal transmitted from the RW device 10
- the IC 23 of the tag 7 transmits the information stored in the memory via the dipole antenna 21 to the RW. Sent to device 10.
- the dipole antenna 21 receives the information rewrite request signal transmitted from the RW device 10, the IC 23 of the tag 7 rewrites the information stored in the memory in accordance with the information rewrite request signal.
- the dipole antenna 21 receives the information write request signal transmitted from the RW device 10
- the IC 23 of the tag 7 stores new information in the memory according to the information write request signal.
- the power dipole antenna 21 that performs wireless communication with the RW device 10 is set to the excitable state (the state of V polarization), and the dipole antenna 22 Is not set to the excitation enabled state (H polarization state), even if a signal is transmitted from the RW device 11 during communication with the RW device 10, no signal interference occurs.
- the RW device 10 Upon completion of desired processing for the tag 7, the RW device 10 transmits a switching request signal instructing switching of the polarization direction.
- the IC 23 of the tag 7 When the dipole antenna 21 receives the switching request signal transmitted from the RW device 10, the IC 23 of the tag 7 performs a process of switching the dipole antenna in the excitation enabled state to the dipole antenna 21 force to the dipole antenna 22 (H polarization). Set to wave state)
- the tag 7 becomes capable of wireless communication with the force RW device 11 in which wireless communication with the RW device 10 becomes impossible.
- the dipole antenna 22 of the tag 7 receives the interrogation signal.
- the rectification unit built in the IC23 of the tag 7 rectifies the interrogation signal and converts it into driving power. Accumulate that power.
- the IC 23 of the tag 7 transmits a response signal to the call signal to the RW device 11 via the dipole antenna 22.
- the dipole antenna 22 receives the information rewrite request signal transmitted from the RW device 11, the IC 23 of the tag 7 rewrites the information held in the memory according to the information rewrite request signal.
- the dipole antenna 22 receives the information write request signal transmitted from the RW device 11, the IC 23 of the tag 7 stores new information in the memory according to the information write request signal.
- the tag 7 is configured so that the power dipole antenna 22 can be excited and the dipole antenna 21 can be excited. Therefore, even if a signal is transmitted from the RW device 10 during communication with the RW device 11, signal interference will not occur.
- the IC 23 of the tag 7 receives, for example, a switching request signal from the RW device 10, a dipole antenna switching process is performed via the dipole antenna 21 before switching the dipole antenna in an excitable state.
- a switching confirmation signal indicating this may be transmitted to the RW device 10.
- the RW device 10 can recognize that the dipole antenna that is ready for excitation is switched.
- the RW device 10 notifies the RW device 11 that the dipole antenna of the tag 7 can be switched (for example, a wired line or a wireless line stretched between the RW device 10 and the RW device 11 is connected).
- the RW device 11 can recognize that it can communicate with the tag 7.
- the IC 23 of the tag 7 receives a switching request signal from the RW device 10, for example, the dipole antenna in the excitable state is switched, and then the dipole antenna switching process is performed via the dipole antenna 22.
- a switching confirmation signal indicating this may be transmitted to the RW device 11.
- the RW device 10 can recognize that the dipole antenna in the excitation enabled state has been switched.
- the RW device 11 can recognize that communication with the tag 7 is possible.
- the force RW device 10 12 and the tag 6-9 are shown to have circular polarization when the polarization of the tag 6 9 and the RW device 10-12 is linearly polarized. Even with polarized waves and elliptical polarized waves, the same effect can be achieved by using two orthogonal polarized waves.
- the polarization of the RW device 10 is V-polarized
- the polarization of the RW device 11 is H-polarized, so that the signal from the RW device 11 does not interfere with the RW device 10.
- the RW device 12 uses the same V polarization as the RW device 10 and has a large distance, the effect is small and does not matter.
- FIG. 3 is a block diagram showing a wireless tag communication system according to Embodiment 2 of the present invention.
- the same reference numerals as those in FIG. 1 are identical to FIG. 1 and the same reference numerals as those in FIG. 1;
- the pedestal 31 is, for example, an article that is installed on the production line and has the tags 36-39 attached thereto.
- Articles 32-35 are, for example, in-process products and may differ in size from one another.
- Tags 36-39 are affixed to the articles 32-35, hold specific information about the articles 32-35 (for example, identification information of the articles), and carry out wireless communication with the RW devices 40-42. It has a function to do. Tags 36-39 have the function of switching the direction of polarization as they move.
- the RW device 40-42 is arranged one-dimensionally along the direction in which the base 31 moves the article 32-35, and the communication area 43 of the RW device 40 and the communication area 44 of the RW device 41 are arranged. And the communication area 44 of the RW device 41 and the communication area 45 of the RW device 42 are partially overlapped.
- the RW devices 40-42 perform wireless communication with the tags 36-39 and read / write information held in the tags 36-39, but the polarization of the RW devices 40-42 is set to H polarization.
- the polarization of the RW device 41 is set to V polarization. That is, the polarization of adjacent RW devices is set to be orthogonal.
- the polarization of the RW devices 40-42 is set to be orthogonal to the polarization of the RW devices 10-12 facing each other in adjacent rows.
- the RW device 10-12 and RW device 40-42 used there are installed facing each other.
- the radiation patterns of the RW devices 10-12 and RW devices 40-42 usually have directivity that maximizes the front direction, so that the RW devices facing each other interfere with each other.
- the RW device 10 and the RW device 40 interfere, the RW device 11 and the RW device 41 interfere, and the RW device 12 and the RW device 42 interfere.
- FIG. 4 is a block diagram showing a wireless tag communication system according to Embodiment 3 of the present invention.
- communication area 51-54 is the communication area of the RW device whose polarization is set to polarization (A), and communication area 61-64 is orthogonal to polarization (A). This is the communication area of the RW device that is set to polarization (B).
- the movement of the article of the first embodiment is extended two-dimensionally. This assumes logistics management of goods moving on the ground in the factory.
- Communication areas 51-54 and 61-64 represent communication areas on the ground of a plurality of RW devices (not shown) installed on the ceiling or the like. Communication areas with different codes are communication areas of different RW devices.
- RW devices There are two types of RW devices, one with polarized waves (A) and one with polarized waves (B).
- the RW devices corresponding to communication areas 51-54 have polarized waves (A)
- the polarization of the RW device corresponding to communication area 61-64 is polarization (B).
- signal interference may occur in the overlapped area as in the case of the first embodiment.
- the communication areas 51-54, 61 64 are arranged so that the polarization (A) areas or the polarization (B) areas do not overlap each other. Therefore, signal interference can be prevented.
- the communication areas 51 to 54 are arranged in a square shape, and are arranged so that the areas do not overlap each other.
- the communication area 61 64 is also arranged in a square shape so that the areas do not overlap each other.
- the area of polarization (A) and the area of polarization (B) are moving in the diagonal direction by a distance half the square diagonal.
- the polarization is not specified, but two orthogonal polarizations may be used.
- the polarizations of adjacent RW devices are orthogonalized. Even if two RW devices are placed in two dimensions, IJ has the effect of preventing signal interference.
- FIG. 5 is a block diagram showing a tag of the wireless tag communication system according to the fourth embodiment of the present invention.
- the communication processing unit 24 receives a signal transmitted from the RW device 10 (or the RW device 12) via the V-polarized dipole antenna 21, while receiving the signal from the RW device 1
- the signal While receiving the signal transmitted from the W device 11, the signal is transmitted to the RW device 11.
- the IC 26 controls the processing contents of the communication processing units 24 and 25.
- IC26 has a built-in memory that holds information unique to article 25, and dipole antennas 21 and 22 are R
- the interrogation signal which is a high-frequency signal transmitted from the W device 1012
- the interrogation signal is rectified and converted into drive power, and a rectifier that stores the power is incorporated.
- the tag switches the direction of polarization as it moves, but the two polarizations that are orthogonal to each other are processed simultaneously. Like that. Specifically, it is as follows.
- the tag 7 attached to the article 3 exists in an area where the communication area 13 of the RW device 10 and the communication area 14 of the RW device 11 overlap.
- the dipole antenna 21 of the tag 7 set to the state of V polarization is excited.
- the dipole antenna 22 of the tag 7 which is in a possible state and set to the state of H polarization is in a state where excitation is possible.
- the rectification unit built in the IC26 of tag 7 rectifies the interrogation signal and converts it into drive power, and converts the power into power. accumulate.
- the IC 26 of the tag 7 transmits a response signal to the call signal to the RW device 10 via the dipole antenna 21.
- the dipole antenna 22 of the tag 7 receives the interrogation signal.
- the rectification unit built in the IC26 of tag 7 rectifies the interrogation signal and converts it into drive power, and the power is converted. accumulate.
- the IC 26 of the tag 7 transmits a response signal to the call signal to the RW device 11 via the dipole antenna 22.
- the wireless communication with the RW device 10 is performed by a processing system including a dipole antenna 21 and a communication processing unit 24.
- wireless communication with the RW device 11 is performed by a processing system including a dipole antenna 22 and a communication processing unit 25.
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- Computer Networks & Wireless Communication (AREA)
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Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/010499 WO2006011187A1 (ja) | 2004-07-23 | 2004-07-23 | 無線タグ通信システム |
EP04770892A EP1734662A4 (en) | 2004-07-23 | 2004-07-23 | RADIO COMMUNICATION SYSTEM LABEL |
JP2006527715A JPWO2006011187A1 (ja) | 2004-07-23 | 2004-07-23 | 無線タグ通信システム |
US10/592,131 US7495557B2 (en) | 2004-07-23 | 2004-07-23 | Radio tag communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/010499 WO2006011187A1 (ja) | 2004-07-23 | 2004-07-23 | 無線タグ通信システム |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006011187A1 true WO2006011187A1 (ja) | 2006-02-02 |
Family
ID=35785946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/010499 WO2006011187A1 (ja) | 2004-07-23 | 2004-07-23 | 無線タグ通信システム |
Country Status (4)
Country | Link |
---|---|
US (1) | US7495557B2 (ja) |
EP (1) | EP1734662A4 (ja) |
JP (1) | JPWO2006011187A1 (ja) |
WO (1) | WO2006011187A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008283404A (ja) * | 2007-05-09 | 2008-11-20 | Fujitsu Ltd | 交差二重タグ及びそれを用いたrfidシステム |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007306484A (ja) * | 2006-05-15 | 2007-11-22 | Omron Corp | タグ通信システム、干渉防止方法及びタグ通信制御装置 |
DE202013104222U1 (de) | 2013-09-16 | 2013-10-21 | ASTRA Gesellschaft für Asset Management mbH & Co. KG | RFID-Lesegerät |
FR3026876B1 (fr) | 2014-10-03 | 2017-12-08 | Tagsys | Procede de discrimination de tags rfid en mouvement de tags rfid statiques |
JP6279444B2 (ja) * | 2014-10-06 | 2018-02-14 | 富士通フロンテック株式会社 | Rfタグ読取装置及びrfタグの一括読取方法 |
JP7107762B2 (ja) * | 2018-06-20 | 2022-07-27 | 東芝テック株式会社 | 通信装置、通信方法及びプログラム |
CN113238575A (zh) * | 2021-05-08 | 2021-08-10 | 北京京东乾石科技有限公司 | 仓储盘点巡检方法和系统、控制设备、无人机和存储设备 |
EP4358421A1 (en) * | 2022-10-18 | 2024-04-24 | Nokia Technologies Oy | A system for reading a passive radio frequency device and a passive radio frequency device |
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JPH06232782A (ja) | 1993-02-05 | 1994-08-19 | Matsushita Electric Ind Co Ltd | 移動体識別装置 |
JP2000013287A (ja) * | 1998-06-23 | 2000-01-14 | Denso Corp | 車両位置検出システム |
JP2001191919A (ja) * | 2000-01-07 | 2001-07-17 | Nippon Signal Co Ltd:The | 車両運行制御装置 |
JP2003283367A (ja) | 2002-03-27 | 2003-10-03 | Hitachi Kokusai Electric Inc | 質問器システム |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11142504A (ja) * | 1997-11-05 | 1999-05-28 | Toshiba Corp | パルス送受信レーダ装置 |
JP2003249871A (ja) | 2002-02-22 | 2003-09-05 | Sharp Corp | 無線通信システム |
-
2004
- 2004-07-23 JP JP2006527715A patent/JPWO2006011187A1/ja active Pending
- 2004-07-23 EP EP04770892A patent/EP1734662A4/en not_active Withdrawn
- 2004-07-23 US US10/592,131 patent/US7495557B2/en not_active Expired - Fee Related
- 2004-07-23 WO PCT/JP2004/010499 patent/WO2006011187A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH06232782A (ja) | 1993-02-05 | 1994-08-19 | Matsushita Electric Ind Co Ltd | 移動体識別装置 |
JP2000013287A (ja) * | 1998-06-23 | 2000-01-14 | Denso Corp | 車両位置検出システム |
JP2001191919A (ja) * | 2000-01-07 | 2001-07-17 | Nippon Signal Co Ltd:The | 車両運行制御装置 |
JP2003283367A (ja) | 2002-03-27 | 2003-10-03 | Hitachi Kokusai Electric Inc | 質問器システム |
Non-Patent Citations (1)
Title |
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See also references of EP1734662A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008283404A (ja) * | 2007-05-09 | 2008-11-20 | Fujitsu Ltd | 交差二重タグ及びそれを用いたrfidシステム |
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Publication number | Publication date |
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EP1734662A1 (en) | 2006-12-20 |
EP1734662A4 (en) | 2009-07-08 |
US7495557B2 (en) | 2009-02-24 |
JPWO2006011187A1 (ja) | 2008-05-01 |
US20070273526A1 (en) | 2007-11-29 |
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