CN101901327A - Radio frequency identification apparatus - Google Patents

Radio frequency identification apparatus Download PDF

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Publication number
CN101901327A
CN101901327A CN2009102590021A CN200910259002A CN101901327A CN 101901327 A CN101901327 A CN 101901327A CN 2009102590021 A CN2009102590021 A CN 2009102590021A CN 200910259002 A CN200910259002 A CN 200910259002A CN 101901327 A CN101901327 A CN 101901327A
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CN
China
Prior art keywords
permanent magnet
frequency identification
rfid tag
electromagnet
radio
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN2009102590021A
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Chinese (zh)
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CN101901327B (en
Inventor
李庆熙
崔显均
朴正镐
李升勇
朱寅鹤
陈广子
崔完植
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Electronics and Telecommunications Research Institute ETRI
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Electronics and Telecommunications Research Institute ETRI
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Publication of CN101901327A publication Critical patent/CN101901327A/en
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Publication of CN101901327B publication Critical patent/CN101901327B/en
Expired - Fee Related legal-status Critical Current
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009Methods 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
    • G06K7/10158Methods 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 methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06KGRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009Methods 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
    • G06K7/10366Methods 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

Abstract

The present invention relates to a radio frequency identification apparatus for identifying a radio frequency identification label by a radio frequency identification reader, and comprises a reading unit and a label unit. The reading unit includes the radio frequency identification reader and a first permanent magnet of first magnetism. The label unit includes a radio frequency identification label, a second permanent magnet of second magnetism, a spring device for connecting the second permanent magnet and the radio frequency identification label, and an electromagnet. Thereby, a radio frequency identification label exceeding an identification distance of the radio frequency identification reader is identified, so as to obtain an equal effect of enlarging the identification distance of the radio frequency identification reader. In addition, an operator is capable of determining whether the radio frequency identification label is identified or not through vision by moving the radio frequency identification label.

Description

Rfid device
Technical field
The present invention relates to rfid device, relate in particular to the rfid device that is used to discern the hand RFID tag.
Background technology
RFID tag (Radio Frequency IDentification Tag, the RFID label) and radio-frequency identification reader (Radio Frequency-IDentification Reader, the RFID reader) chip built-in in is produced in batches, and the transmission receptivity of chip is determined.And (Ultra High Frequency, UHF) international standard has been set in the transmission output of the rfid device of band frequency at using ultrahigh frequency.
Therefore, there is the problem that the expansion radio-frequency identification reader can be discerned the decipherment distance of RFID tag that is difficult to.
Summary of the invention
But the object of the invention is to enlarge the decipherment distance of reader identification label in the radio-frequency recognition system.
The rfid device that the present invention relates to is for discerning the device of RFID tag by radio-frequency identification reader, it comprises reading unit and tag unit.Reading unit comprises radio-frequency identification reader and first permanent magnet with first magnetic.Tag unit comprises RFID tag, has second permanent magnet of second magnetic, connects the spring assembly and the electromagnet of second permanent magnet and RFID tag.
At this moment, first magnetic and second magnetic have opposite magnetic, are formed with magnetic field between first permanent magnet and second permanent magnet.
And spring assembly comprises spring, and RFID tag is connected in the lower end of spring, and electromagnet is formed at the inside or the outside of RFID tag.
And RFID tag and electromagnet are between first permanent magnet and second permanent magnet.
In addition, when first permanent magnet when the second permanent magnet direction moves, the electromagnetic force according between first permanent magnet and second permanent magnet produces induced current on electromagnet, and according to magnetic field and induced current, produces the power of specific direction on electromagnet.
Spring is elongated by the power that applies, thereby makes RFID tag move to the second place from primary importance.
And the direction of power comes bright left-hand rule to determine according to Buddhist.
Radio-frequency identification reader transmits the AC signal of special frequency band by RFID tag, RFID tag produces DC voltage by the rectification AC signal, and based on DC voltage the back-signalling of corresponding AC signal is transferred to radio-frequency identification reader.
Among the present invention, surpass the locational RFID tag of the decipherment distance of radio-frequency identification reader, thereby can obtain the effect that is equal to the decipherment distance that enlarges radio-frequency identification reader by identification.In addition, the present invention has the staff can by the identification whether advantage that moves, confirms with vision RFID tag of RFID tag.
Description of drawings
Fig. 1 is the synoptic diagram of the structure of the rfid device that shows that the embodiment of the invention relates to.
Fig. 2 is the accompanying drawing of the RFID tag recognition methods that shows that the embodiment of the invention relates to.
Fig. 3 shows an example relates in the embodiment of the invention the reading unit and the synoptic diagram of tag unit shape.
Fig. 4 is the accompanying drawing of the moving method of the RFID tag that an example relates in the demonstration embodiment of the invention.
Embodiment
Below, with reference to accompanying drawing embodiments of the invention are elaborated, so that the those of ordinary skill of described technical field can be implemented easily.Yet the present invention can have various embodiment, is not limited at the embodiment shown in this.In addition,, omitted among the figure and part that explanation is irrelevant in order to clearly demonstrate the present invention, and instructions on the whole similar portions made mark with simileys.
In full piece of writing instructions, if there is certain part " to comprise " description of certain technical characterictic, do not having under the opposite situation about describing, this description refers to that then the present invention except that carrying technical characterictic, can also comprise the other technologies feature.
Describe the rfid device that the embodiment of the invention relates to reference to the accompanying drawings in detail.
The structure of the rfid device that the embodiment of the invention relates at first, is described with reference to Fig. 1.
Fig. 1 is the synoptic diagram of the structure of the rfid device that shows that the embodiment of the invention relates to.
As shown in Figure 1, rfid device 100 comprises reading unit 110 and tag unit 130.At this moment, reading unit 110 comprises first permanent magnet 111 and radio-frequency identification reader 113 (Radio Frequency IDentification Reader also can be called the RFID reader).Tag unit 130 comprises second permanent magnet 131, spring assembly 133, RFID tag 135 (Radio Frequency IDentification Tag also can be called the RFID label) and electromagnet 137.
Be the information of detection of stored in RFID tag 135, radio-frequency identification reader 113 is to the AC signal of RFID tag 135 transmission special frequency bands, and the AC signal of 135 pairs of receptions of RFID tag is carried out rectification and is generated DC voltage, will comprise in the RFID tag 135 that based on the DC voltage that generates the back-signalling of canned data is transferred to radio-frequency identification reader 113 in advance then.At this moment, radio-frequency identification reader 113 only RFID tag 135 be positioned at predetermined decipherment distance with situation under, can be to RFID tag 135 transmission AC signal.
First permanent magnet 111 and second permanent magnet 131 are the magnet that keeps the hard magnetization state for a long time, and the magnetic of the magnetic of first permanent magnet 111 and second permanent magnet 131 is opposite.
Spring assembly 133 is to comprise helical spring device, and described volute spring has elasticity, elongates or shortening according to its length of acting force thus, and described spring assembly 133 is used to connect the RFID tag 135 and second permanent magnet 131.
Electromagnet 137 is temporary magnets, if electric current passes through, and just magnetization; If turn-off current is just got back to original state, and described electromagnet 137 is attached at the outside or inner of RFID tag 135.At this moment, according to electromagnetic force, can there be induced current to pass through on the electromagnet 137.
The method of the radio-frequency identification reader identification RFID tag that the embodiment of the invention relates to is described with reference to Fig. 2 then.
Fig. 2 is the accompanying drawing of the recognition methods of the RFID tag that shows that the embodiment of the invention relates to.
As shown in Figure 2, at first reading unit 110 moves (S101) towards the locality of tag unit 130.
Below, the shape of the reading unit and the tag unit of the rfid device that an example relates in the embodiment of the invention is described with reference to Fig. 3.
Fig. 3 is the accompanying drawing that shows the shape of an example relates in the embodiment of the invention reading unit and tag unit.
As shown in Figure 3, reading unit 110 can attach on the vehicle 10, and tag unit 130 can attach on the structure 30.
Radio-frequency identification reader 113 and is connected with first permanent magnet 111 between first permanent magnet 111 and second permanent magnet 131.
Spring assembly 133 is between first permanent magnet 111 and second permanent magnet 131, and be connected with second permanent magnet 131, RFID tag 135 is connected with the spring of spring assembly 133 and is positioned on the primary importance, and electromagnet 137 is connected with the lower end of RFID tag 135.
The method of the radio-frequency identification reader identification RFID tag that the embodiment of the invention relates to is described referring again to Fig. 2 below.
Then, along with the locality of reading unit 110 to tag unit 130 moves, the magnetic flux between first permanent magnet 111 and second permanent magnet 131 increases, and makes between first permanent magnet 111 and second permanent magnet 131 and produces electromagnetic force (S103).
Then, along with the electromagnetic force between first permanent magnet 111 and second permanent magnet 131, produce induced current on the electromagnet 137, and, produce the power (S105) of specific direction on the electromagnet 137 along with the induced current that produces on magnetic field between first permanent magnet 111 and second permanent magnet 131 and the electromagnet 137.At this moment, the direction of the power that produces on the electromagnet 137 comes bright left-hand rule (Fleming ' s left hand rule) to determine according to the Buddhist of the direction of the power that is used for representing the lead that the action of a magnetic field passes through in electric current.And when the direction of the power that produces on the electromagnet 137 came bright left-hand rule to determine according to Buddhist, the direction of the induced current that produces on the electromagnet 137 was determined according to the formation direction of electromagnet 137.
Secondly, spring assembly 133 is according to the power that produces on the electromagnet 137, and the position of RFID tag 135 is moved to (S107) on the second place from primary importance.
Below, the moving method of the RFID tag that an example relates in the embodiment of the invention is described with reference to Fig. 4.
Fig. 4 is the accompanying drawing of the moving method of the RFID tag that an example relates in the demonstration embodiment of the invention.
As shown in Figure 4, when the direction of the power that produces on the electromagnet 137 down the time, the spring of spring assembly 133 elongates downwards, so that the position of RFID tag 135 moves to the second place from primary importance.
By this process, RFID tag 135 is positioned at the decipherment distance of radio-frequency identification reader 113.
Below, the method for the radio-frequency identification reader identification RFID tag that the embodiment of the invention relates to is described referring again to Fig. 2.
Then, radio-frequency identification reader 113 is to the RFID tag 135 transmission AC signal (S109) that are positioned at decipherment distance.
Then, RFID tag 135 is carried out rectification generation DC voltage (S111) with the AC signal that receives.
Secondly, RFID tag 135 will comprise in the RFID tag 135 that based on the DC voltage that generates the back-signalling of canned data is transferred to radio-frequency identification reader 113 (S113) in advance.
So, identification surpasses the locational RFID tag of the decipherment distance of radio-frequency identification reader, thereby can obtain the effect that is equal to the decipherment distance that enlarges radio-frequency identification reader.In addition, the staff can be by the moving of RFID tag, and the identification of confirming RFID tag with vision whether.
More than Shuo Ming embodiments of the invention are not only to realize by device and/or method, can also be by realizing with the corresponding functional programs of the structure of the embodiment of the invention, storing this program recording medium and wait and realize.Such embodiment so long as the general technical staff of the technical field of the invention all can realize easily with reference to the foregoing description.
More than; embodiments of the invention are had been described in detail; yet protection scope of the present invention is not limited thereto, all in the scope that does not break away from spirit of the present invention the person of ordinary skill in the field to various changes that the present invention did and modify and all belong to protection scope of the present invention.

Claims (8)

1. a rfid device is discerned RFID tag with radio-frequency identification reader, it is characterized in that, comprising:
Reading unit, it comprises described radio-frequency identification reader and first permanent magnet with first magnetic; And
Tag unit, it comprises described RFID tag, has second permanent magnet of second magnetic, connects the spring assembly and the electromagnet of described second permanent magnet and described RFID tag.
2. rfid device according to claim 1 is characterized in that:
Described first magnetic and described second magnetic have opposite magnetic, are formed with magnetic field between described first permanent magnet and described second permanent magnet.
3. rfid device according to claim 2 is characterized in that:
Described spring assembly comprises spring, and described RFID tag is connected in the lower end of described spring, and described electromagnet is formed at the inside or the outside of described RFID tag.
4. rfid device according to claim 3 is characterized in that:
Described RFID tag and described electromagnet are between described first permanent magnet and described second permanent magnet.
5. rfid device according to claim 4 is characterized in that:
When described first permanent magnet when the described second permanent magnet direction moves, according to the electromagnetic force between described first permanent magnet and described second permanent magnet, produce induced current on the described electromagnet, and, produce the power of specific direction on the described electromagnet according to described magnetic field and described induced current.
6. rfid device according to claim 5 is characterized in that:
Described spring is elongated by described power, thereby makes described RFID tag move to the second place from primary importance.
7. rfid device according to claim 5 is characterized in that:
The direction of described power comes bright left-hand rule to determine according to Buddhist.
8. according to any one described rfid device in the claim 1 to 7, it is characterized in that:
Described radio-frequency identification reader transmits the AC signal of special frequency band by described RFID tag, described RFID tag generates DC voltage by the described AC signal of rectification, and based on described DC voltage the back-signalling of the described AC signal of correspondence is transferred to described radio-frequency identification reader.
CN200910259002.1A 2008-12-11 2009-12-09 Radio frequency identification apparatus Expired - Fee Related CN101901327B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20080126105 2008-12-11
KR126105/08 2008-12-11
KR42795/09 2009-05-15
KR1020090042795A KR101203715B1 (en) 2008-12-11 2009-05-15 radio frequency identification apparatus

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CN101901327A true CN101901327A (en) 2010-12-01
CN101901327B CN101901327B (en) 2014-07-16

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102385685A (en) * 2011-10-18 2012-03-21 深圳市科信通信设备有限公司 Radio frequency tag system and use method for same
CN104346592A (en) * 2013-08-08 2015-02-11 联想(北京)有限公司 Short-range wireless communication equipment, card and information prompting method
CN110827483A (en) * 2018-08-08 2020-02-21 中国电信股份有限公司 Article storing and taking device, system and method, patch, storage rack and robot

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101678936B1 (en) * 2015-04-21 2016-12-06 (주)락싸 Motion Generation Apparatus using Near Field Communication And The Operating Method Of The Same

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US3593850A (en) * 1968-06-08 1971-07-20 Hoefliger & Karg Detecting of labels on discrete articles
CN1082740A (en) * 1992-05-08 1994-02-23 欧林巴斯光学工业股份有限公司 Be used on mark, implementing the scanister of omnidirectional's scanning patter
JP2001076085A (en) * 1992-06-26 2001-03-23 Olympus Optical Co Ltd Bar code scanner
CN1653372A (en) * 2002-05-14 2005-08-10 奥林巴斯株式会社 Barcode reader
CN1795585A (en) * 2003-04-10 2006-06-28 艾利丹尼森公司 Rfid devices having self-compensating antennas and conductive shields
JP2008020683A (en) * 2006-07-13 2008-01-31 Fuji Xerox Co Ltd Image forming apparatus

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JP2003168088A (en) 2001-11-29 2003-06-13 Matsushita Electric Ind Co Ltd Non-contact ic card
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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3593850A (en) * 1968-06-08 1971-07-20 Hoefliger & Karg Detecting of labels on discrete articles
CN1082740A (en) * 1992-05-08 1994-02-23 欧林巴斯光学工业股份有限公司 Be used on mark, implementing the scanister of omnidirectional's scanning patter
JP2001076085A (en) * 1992-06-26 2001-03-23 Olympus Optical Co Ltd Bar code scanner
CN1653372A (en) * 2002-05-14 2005-08-10 奥林巴斯株式会社 Barcode reader
CN1795585A (en) * 2003-04-10 2006-06-28 艾利丹尼森公司 Rfid devices having self-compensating antennas and conductive shields
JP2008020683A (en) * 2006-07-13 2008-01-31 Fuji Xerox Co Ltd Image forming apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102385685A (en) * 2011-10-18 2012-03-21 深圳市科信通信设备有限公司 Radio frequency tag system and use method for same
CN104346592A (en) * 2013-08-08 2015-02-11 联想(北京)有限公司 Short-range wireless communication equipment, card and information prompting method
CN104346592B (en) * 2013-08-08 2018-08-10 联想(北京)有限公司 A kind of close range wireless communication equipment, card and a kind of information cuing method
CN110827483A (en) * 2018-08-08 2020-02-21 中国电信股份有限公司 Article storing and taking device, system and method, patch, storage rack and robot
CN110827483B (en) * 2018-08-08 2022-06-03 中国电信股份有限公司 Article storing and taking device, system and method, patch, storage rack and robot

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Publication number Publication date
CN101901327B (en) 2014-07-16
KR101203715B1 (en) 2012-11-21
KR20100067588A (en) 2010-06-21

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