CN101630357B - Radio frequency identification device capable of enhancing induced field strength of electromagnetic wave - Google Patents
Radio frequency identification device capable of enhancing induced field strength of electromagnetic wave Download PDFInfo
- Publication number
- CN101630357B CN101630357B CN200910109116.8A CN200910109116A CN101630357B CN 101630357 B CN101630357 B CN 101630357B CN 200910109116 A CN200910109116 A CN 200910109116A CN 101630357 B CN101630357 B CN 101630357B
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- CN
- China
- Prior art keywords
- sheet metal
- gap
- contactless card
- electromagnetic
- electronic lock
- Prior art date
- 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.)
- Expired - Fee Related
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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
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07771—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card the record carrier comprising means for minimising adverse effects on the data communication capability of the record carrier, e.g. minimising Eddy currents induced in a proximate metal or otherwise electromagnetically interfering object
-
- 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
- G06K7/10158—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 methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field
- G06K7/10178—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 methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field including auxiliary means for focusing, repeating or boosting the electromagnetic interrogation field
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Artificial Intelligence (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Credit Cards Or The Like (AREA)
- Lock And Its Accessories (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The invention relates to a radio frequency identification device capable of enhancing the induced field strength of electromagnetic waves, which comprises a metal plate capable of shielding the electromagnetic waves and an induction card and a card reader which are respectively positioned at both sides of the metal plate, wherein the metal plate is provided with an opening which allows electromagnetic wave leakage to pass through; the induction card and the card reader can realize wireless communication by receiving and transmitting wireless radio frequency electromagnetic waves; and the opening on the metal plate is only a gap which is opened on the edge of the metal plate so as to ensure that one end of the gap is a notch of the edge of the metal plate, while the other end is extended into the metal plate. After the structure of the radio frequency identification device is applied, the invention can be applied to the fields of electronic locks and entrance guards. At the same time of improving the induction sensitivity, the volume of the product can be greatly reduced, thus the appearance of the product is more attractive.
Description
Technical field
The present invention relates to the technical field of radio frequency identification and shield assembly, refer in particular to a kind of rfid device that is applied to the strengthened induced field strength of electromagnetic wave in the fields such as electronic lock, gate inhibition.
Background technology
Radio-frequency (RF) identification (RFID) technology is a kind of contactless automatic identification technology, and it utilizes electromagnetic wave to realize the automatic identification of article.Present stage, RFID technology has been brought into play important effect in a lot of fields.
At present, radio-frequency (RF) identification being most widely used with high frequency and ultrahigh frequency.Yet, radio frequency is more responsive to environment, especially metal material, can there is to electromagnetic wave the effect of shielding and transmitting, and cause contactless card to work having on the object of metal surface, and applying in radio frequency identification the most widely logistic industry mostly be metal environment, so this shortcoming of metal sensitivity has limited its application at logistic industry greatly, as fields such as electronic lock, gate inhibition, security personnel, work attendances.
For example, in existing electronic lock field, radio-frequency recognition system comprises the electromagnetic metal latch panel of maskable and lays respectively at contactless card and the card reader of lock panel both sides, conventionally the large through-hole that has a sealing in existing lock panel supplies electromagnetic transmission, as shown in Figure 1, in use, it is found that when electromagnetic wave is during by this sealing large through-hole, owing to there being free electron in metal, free electron surrounding at large through-hole under Electromagnetic Field forms loop, thereby form induced field in sealing through hole, this induced field produces weakening effect to electromagnetic wave, make the sensitivity of contactless card induction, like this, just have to Kong Kai great to improve induction sensitivity.And large through-hole exists some defects, one, because its through hole volume is larger, causes harmful effect to lock panel aesthetic in appearance; Its two, because its through hole volume is larger, make sheet metal overall volume also larger, thereby cause the small product size cannot miniaturization, promote to electronic lock family expenses and cause harmful effect.And in the fields such as gate inhibition, also there is above-mentioned identical problem.
Summary of the invention
Object of the present invention is exactly a kind of rfid device that is applied to the strengthened induced field strength of electromagnetic wave in electronic lock, gate inhibition field providing for the deficiencies in the prior art part.
For achieving the above object, the present invention includes: the electromagnetic sheet metal of maskable and the contactless card and the card reader that lay respectively at sheet metal both sides, on described sheet metal, have the opening passing through for electromagnetic-wave leakage, between described contactless card and described card reader, can realize wireless telecommunications by transmitting/receiving wireless radio frequency electromagnetic, opening on described sheet metal is only a gap, and described gap is opened in metal-sheet edges, the one end that makes described gap is the disjunct fracture port of described metal-sheet edges, and it is inner that the other end in described gap extends to described sheet metal.
The one end with the fracture port that is not connected in described gap can be opened in any lateral edges of described sheet metal.
Described gap be shaped as linear.
The shape in described gap can be arc line shaped.
The shape in described gap can be the shape that straight line is connected and forms with camber line.
Described contactless card is non-contact passive contactless card, the radio frequency electromagnetic frequency of the frequency of the resonant circuit of series connection and card reader transmitting is identical in described contactless card charges to contactless card with generation electromagentic resonance, is also provided with digit chip and receives and dispatches electromagnetic antenna in described contactless card.
Described rfid device is arranged on electronic lock, and described sheet metal is electronic lock deckle board, and described card reader is arranged on the circuit board in electronic lock.
Described rfid device is arranged on gate inhibition.
The width range in described gap is between 1mm-8mm.
The width the best in described gap is 4mm.
Adopt after said structure, on the edge of sheet metal, have gap, because there is disjunct fracture port at the metal-sheet edges place in this gap, therefore, when this gap of electromagnetic wave process, free electron in the surrounding metal in this gap cannot form loop, cannot form induced field, like this, when electromagnetic wave is propagated through this gap, the impact being subject to is just little a lot, the sensitivity of the rf wave that contactless card reception card reader is sent improves greatly, like this, the present invention can be applicable to electronic lock, in gate inhibition field, when improving induction sensitivity, can greatly reduce small product size, make product shape more attractive in appearance.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of rfid device of the prior art.
Fig. 2 is the structure principle chart of rfid device of the present invention.
Fig. 3 is structure 1 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Fig. 4 is structure 2 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Fig. 5 is structure 3 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Fig. 6 is structure 4 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Fig. 7 is structure 5 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Fig. 8 is structure 6 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Fig. 9 is structure 7 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 10 is structure 8 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 11 is structure 9 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 12 is structure 10 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 13 is structure 11 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 14 is structure 12 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 15 is structure 13 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 16 is structure 14 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 17 is structure 15 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 18 is structure 16 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 19 is structure 17 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 20 is structure 18 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 21 is structure 19 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 22 is structure 20 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 23 is structure 21 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 24 is structure 22 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Figure 25 is structure 23 schematic diagram of the sheet metal in electronic lock embodiment of the present invention.
Embodiment
As shown in Fig. 2-25, the present invention includes: the electromagnetic sheet metal 10 of maskable and the contactless card 20 and the card reader 30 that lay respectively at sheet metal 10 both sides, on described sheet metal 10, have the opening passing through for electromagnetic-wave leakage, between described contactless card 20 and described card reader 30, can realize wireless telecommunications by transmitting/receiving wireless radio frequency electromagnetic, opening on described sheet metal 10 is only a gap 11, and described gap 11 is opened on sheet metal 10 edges, the one end that makes described gap 11 is the disjunct fracture port 11a at described sheet metal 10 edges, the other end 11b in described gap 11 extends to described sheet metal 10 inside.The one end with disjunct fracture port 11a in described gap 11 can be opened in any lateral edges of described sheet metal 10.As in Figure 2-4, described gap 11 is shaped as linear.As shown in Figure 5, the shape in described gap 11 can be arc line shaped.As shown in Figure 6, the shape in described gap 11 can be the shape that straight line is connected and forms with camber line.Described contactless card 10 is non-contact passive contactless card, the radio frequency electromagnetic frequency of the frequency of the resonant circuit of described contactless card 10 interior series connection and card reader 30 transmittings is identical charges to contactless card to produce electromagentic resonance, is also provided with digit chip and receives and dispatches electromagnetic antenna in described contactless card 20.Described rfid device is arranged on electronic lock, and described sheet metal 10 is electronic lock deckle board, and described card reader 30 is arranged on the circuit board in electronic lock.Described rfid device is arranged on gate inhibition.The width range in described gap 11 is between 1mm-8mm.The width the best in described gap 11 is 4mm.
During use, when rfid device of the present invention is applied on electronic lock, contactless card 20 is non-contact passive contactless card, first, by card reader 30, carrier signal is outwards sent through antenna; Then, when the radio frequency electromagnetic of launching passes through this gap 11, because there is disjunct fracture port 11a the one end in gap 11, like this, the free electron in the surrounding metal in this gap 11 cannot form loop, cannot form induced field, like this, when electromagnetic wave is propagated through this gap 11, the impact being subject to is just little a lot, and the sensitivity of the rf wave that contactless card 20 reception card reader 30 are sent improves greatly.Contactless card 20 enters behind the perform region of sheet metal 10 opposite sides, the resonant tank that telefault and electric capacity form in contactless card 20 receives the carrier signal of card reader 30 transmittings, the radio frequency interface module of contactless card 20 chips thus signal produces supply voltage, reset signal and system clock, makes chip " activation "; Chip reads control module the data in storer is modulated on carrier wave after phase modulation coding, through contactless card 20 internal antenna loopbacks to card reader 30; The 30 pairs of contactless card receiving 20 backhaul signals of card reader carry out delivering to backstage decision circuitry processing after demodulation, decoding, backstage decision circuitry is according to the legitimacy of induction card number, for different application, make corresponding processing and control, the action of for example controlling the motor in electronic lock carrys out switch lock.
Like this, the present invention can be applicable in electronic lock, gate inhibition field, when improving induction sensitivity, can greatly reduce small product size, makes product shape more attractive in appearance.
Claims (1)
1. the rfid device that can strengthen induced field strength of electromagnetic wave, include: the electromagnetic sheet metal of maskable and the contactless card and the card reader that lay respectively at sheet metal both sides, on described sheet metal, have the opening passing through for electromagnetic-wave leakage, between described contactless card and described card reader, can realize wireless telecommunications by transmitting/receiving wireless radio frequency electromagnetic, it is characterized in that: the opening on described sheet metal is only a gap, and described gap is opened in metal-sheet edges, the one end that makes described gap is the disjunct fracture port of described metal-sheet edges, it is inner that the other end in described gap extends to described sheet metal,
Described gap be shaped as linear;
Described contactless card is non-contact passive contactless card, the radio frequency electromagnetic frequency of the frequency of the resonant circuit of series connection and card reader transmitting is identical in described contactless card charges to contactless card with generation electromagentic resonance, is also provided with digit chip and receives and dispatches electromagnetic antenna in described contactless card;
Described rfid device is arranged on electronic lock, and described sheet metal is electronic lock deckle board, and described card reader is arranged on the circuit board in electronic lock.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910109116.8A CN101630357B (en) | 2009-07-28 | 2009-07-28 | Radio frequency identification device capable of enhancing induced field strength of electromagnetic wave |
| PCT/CN2010/075496 WO2011012071A1 (en) | 2009-07-28 | 2010-07-27 | Radio frequency identification device capable of enhancing induction field strength of electromagnetic waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910109116.8A CN101630357B (en) | 2009-07-28 | 2009-07-28 | Radio frequency identification device capable of enhancing induced field strength of electromagnetic wave |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101630357A CN101630357A (en) | 2010-01-20 |
| CN101630357B true CN101630357B (en) | 2014-11-26 |
Family
ID=41575461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910109116.8A Expired - Fee Related CN101630357B (en) | 2009-07-28 | 2009-07-28 | Radio frequency identification device capable of enhancing induced field strength of electromagnetic wave |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101630357B (en) |
| WO (1) | WO2011012071A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101630357B (en) * | 2009-07-28 | 2014-11-26 | 吴斐 | Radio frequency identification device capable of enhancing induced field strength of electromagnetic wave |
| US11502551B2 (en) | 2012-07-06 | 2022-11-15 | Energous Corporation | Wirelessly charging multiple wireless-power receivers using different subsets of an antenna array to focus energy at different locations |
| JP2015194815A (en) * | 2014-03-31 | 2015-11-05 | サトーホールディングス株式会社 | Ic tag issuing device and shield plate |
| US10079515B2 (en) | 2016-12-12 | 2018-09-18 | Energous Corporation | Near-field RF charging pad with multi-band antenna element with adaptive loading to efficiently charge an electronic device at any position on the pad |
| US11863001B2 (en) | 2015-12-24 | 2024-01-02 | Energous Corporation | Near-field antenna for wireless power transmission with antenna elements that follow meandering patterns |
| CN114389379A (en) * | 2015-12-24 | 2022-04-22 | 艾诺格思公司 | System and method for wireless charging by multiple receiving devices |
| JP2017139652A (en) * | 2016-02-04 | 2017-08-10 | Tdk株式会社 | Antenna device and portable wireless device including the same |
| CN105631381A (en) * | 2016-03-25 | 2016-06-01 | 福建师范大学 | Electronic tag reader with antenna signal directional enhancing function |
| CN105975890B (en) * | 2016-06-12 | 2019-05-17 | 北京泰德汇智科技有限公司 | Read the device and working method of ID card at a distance using synchronous antenna |
| US11462949B2 (en) | 2017-05-16 | 2022-10-04 | Wireless electrical Grid LAN, WiGL Inc | Wireless charging method and system |
| EP3921945A1 (en) | 2019-02-06 | 2021-12-15 | Energous Corporation | Systems and methods of estimating optimal phases to use for individual antennas in an antenna array |
| CN112749571B (en) * | 2020-12-28 | 2022-07-05 | 杭州海康威视数字技术股份有限公司 | Card reading terminal and radio frequency identification system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251131C (en) * | 2000-07-19 | 2006-04-12 | 株式会社哈尼克斯 | RFID tag housing structure, RFID tag installation structure and RFID tag communication method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101282633B (en) * | 2007-08-30 | 2011-11-23 | 雅可夫·皮欧特·施可尼科夫 | Method and device capable of shielding at least one non-contact smart card or RFID label |
| CN101630357B (en) * | 2009-07-28 | 2014-11-26 | 吴斐 | Radio frequency identification device capable of enhancing induced field strength of electromagnetic wave |
-
2009
- 2009-07-28 CN CN200910109116.8A patent/CN101630357B/en not_active Expired - Fee Related
-
2010
- 2010-07-27 WO PCT/CN2010/075496 patent/WO2011012071A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1251131C (en) * | 2000-07-19 | 2006-04-12 | 株式会社哈尼克斯 | RFID tag housing structure, RFID tag installation structure and RFID tag communication method |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2007-135183A 2007.05.31 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101630357A (en) | 2010-01-20 |
| WO2011012071A1 (en) | 2011-02-03 |
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Application publication date: 20100120 Assignee: Zhongshan strong Intelligent Technology Co., Ltd. Assignor: Wu Fei Contract record no.: 2015440000569 Denomination of invention: Radio frequency identification device capable of enhancing induced field strength of electromagnetic wave Granted publication date: 20141126 License type: Exclusive License Record date: 20150817 |
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Granted publication date: 20141126 Termination date: 20180728 |