CN101630357A - Radio frequency identification device capable of enhancing electromagnetic wave induction field intensity - Google Patents
Radio frequency identification device capable of enhancing electromagnetic wave induction field intensityDownload PDFInfo
- Publication number
- CN101630357A CN101630357ACN200910109116ACN200910109116ACN101630357ACN 101630357 ACN101630357 ACN 101630357ACN 200910109116 ACN200910109116 ACN 200910109116ACN 200910109116 ACN200910109116 ACN 200910109116ACN 101630357 ACN101630357 ACN 101630357A
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- electromagnetic wave
- rfid device
- sheet metal
- slit
- field strength
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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.)
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Health & Medical Sciences (AREA)
- Computer Hardware Design (AREA)
- Credit Cards Or The Like (AREA)
- Near-Field Transmission Systems (AREA)
- Lock And Its Accessories (AREA)
Abstract
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 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, the 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 relatively more responsive to environment, especially metal material, the effect of shielding and emission can be arranged electromagnetic wave, and cause contactless card to work on the object of metal surface having, and applying in radio frequency identification the most widely logistic industry mostly be the 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 the contactless card and the card reader of lock panel both sides, usually the large through-hole that has a sealing on the existing lock panel magnetic wave transmission of powering, as shown in Figure 1, in the use, it is found that when electromagnetic wave during by this sealing large through-hole, owing in the metal free electron is arranged, free electron forms the loop around large through-hole under the electromagnetic wave effect, thereby form induced field in the sealing through hole, this induced field produces weakening effect to electromagnetic wave, the sensitivity of contactless card induction is reduced, like this, just have to Kong Kaida is improved induction sensitivity.And there are some defectives in large through-hole, and one because its through hole volume is bigger, causes harmful effect to lock panel aesthetic in appearance; Its two because its through hole volume is bigger, make the sheet metal overall volume also bigger, thereby cause the small product size can't miniaturization, promote for the electronic lock family expenses and cause harmful effect.And in fields such as gate inhibition, also there is above-mentioned identical problem.
Summary of the invention
Purpose 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 that provides at 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 the sheet metal both sides, have the power supply magnetic wave on the described sheet metal and leak the opening that passes through, can realize wireless telecommunications by the transmitting/receiving wireless radio frequency electromagnetic between described contactless card and the described card reader, opening on the described sheet metal only is a slit, and described slit is opened on the metal-sheet edges, make that an end in described slit is the disjunct fracture port of described metal-sheet edges, the other end in described slit extends to described sheet metal inside.
End with the fracture port that do not link to each other in described slit can be opened in any lateral edges of described sheet metal.
Described slit be shaped as linear.
The shape in described slit can be camber line shape.
The shape in described slit can be the shape that straight line links to each other and forms with camber line.
Described contactless card is the non-contact passive contactless card, the radio-frequency electromagnetic wave frequency of the frequency of the resonant circuit of series connection and card reader emission is identical in the described contactless card charges to contactless card with the generation electromagentic resonance, also is provided with digit chip in the described contactless card and receives and dispatches electromagnetic antenna.
Described rfid device is installed on the electronic lock, and described sheet metal is the electronic lock deckle board, and described card reader is installed on the interior circuit board of electronic lock.
Described rfid device is installed on the gate inhibition.
The width range in described slit is between 1mm-8mm.
The width the best in described slit is 4mm.
After adopting said structure, have the slit on the edge of sheet metal, because there is disjunct fracture port at the metal-sheet edges place in this slit, therefore, when this slit of electromagnetic wave process, free electron around this slit in the metal can't form the loop, can't form induced field, like this, when electromagnetic wave is propagated through this slit, the influence that is subjected to is just little a lot, and 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 the gate inhibition field, when improving induction sensitivity, can reduce small product size greatly, make product shape more attractive in appearance.
Description of drawings
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 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Fig. 4 is structure 2 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Fig. 5 is structure 3 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Fig. 6 is structure 4 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Fig. 7 is structure 5 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Fig. 8 is structure 6 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Fig. 9 is structure 7 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 10 is structure 8 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 11 is structure 9 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 12 isstructure 10 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 13 isstructure 11 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 14 is structure 12 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 15 is structure 13 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 16 is structure 14 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 17 is structure 15 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 18 is structure 16 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 19 is structure 17 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 20 is structure 18 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 21 is structure 19 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 22 isstructure 20 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 23 is structure 21 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 24 is structure 22 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Figure 25 is structure 23 synoptic diagram of the sheet metal among the electronic lock embodiment of the present invention.
Embodiment
Shown in Fig. 2-25, the present invention includes: theelectromagnetic sheet metal 10 of maskable and thecontactless card 20 and thecard reader 30 that lay respectively atsheet metal 10 both sides, have the power supply magnetic wave on the describedsheet metal 10 and leak the opening that passes through, can realize wireless telecommunications by the transmitting/receiving wireless radio frequency electromagnetic between describedcontactless card 20 and the describedcard reader 30, opening on the describedsheet metal 10 only is aslit 11, and describedslit 11 is opened onsheet metal 10 edges, make that an end in describedslit 11 is the disjunct fracture port 11a at describedsheet metal 10 edges, the other end 11b in describedslit 11 extends to describedsheet metal 10 inside.End with disjunct fracture port 11a in describedslit 11 can be opened in describedsheet metal 10 any lateral edges.Shown in Fig. 2-4, describedslit 11 be shaped as linear.As shown in Figure 5, the shape in describedslit 11 can be camber line shape.As shown in Figure 6, the shape in describedslit 11 can be the shape that straight line links to each other and forms with camber line.Describedcontactless card 10 is the non-contact passive contactless card, the radio-frequency electromagnetic wave frequency of the frequency of the resonant circuits of series connection andcard reader 30 emissions is identical in the describedcontactless card 10 charges to contactless card with the generation electromagentic resonance, also is provided with digit chip in the describedcontactless card 20 and receives and dispatches electromagnetic antenna.Described rfid device is installed on the electronic lock, and describedsheet metal 10 is the electronic lock deckle board, and describedcard reader 30 is installed on the interior circuit board of electronic lock.Described rfid device is installed on the gate inhibition.The width range in describedslit 11 is between 1mm-8mm.The width the best in describedslit 11 is 4mm.
During use, when rfid device of the present invention was used on electronic lock,contactless card 20 was the non-contact passive contactless card, at first, bycard reader 30 carrier signal was outwards sent through antenna; Then, when the radio frequency electromagnetic of launching passes through thisslit 11, because an end inslit 11 has disjunct fracture port 11a, like this, the free electron around thisslit 11 in the metal can't form the loop, can't form induced field, like this, when electromagnetic wave was propagated through thisslit 11, the influence that is subjected to was just little a lot, and the sensitivity of the rf wave thatcontactless card 20reception card reader 30 are sent improves greatly.Aftercontactless card 20 enters the perform region ofsheet metal 10 opposite sides, the resonant tank of being made up of telefault and electric capacity in thecontactless card 20 receives the carrier signal thatcard reader 30 is launched, the radio frequency interface module ofcontactless card 20 chips signal thus produces supply voltage, reset signal and system clock, makes chip " activation "; Chip reads control module the data in the storer is modulated on the carrier wave behind the phase modulation coding, givescard reader 30 throughcontactless card 20 internal antenna loopbacks; The 30 pairs of contactless card that receives 20 backhaul signals of card reader carry out delivering to backstage decision circuitry processing after demodulation, the decoding, the backstage decision circuitry is according to the legitimacy of induction card number, make corresponding processing and control at different application, the action of for example controlling the motor in the electronic lock comes switch lock.
Like this, the present invention can be applicable in electronic lock, the gate inhibition field, when improving induction sensitivity, can reduce small product size greatly, makes product shape more attractive in appearance.
Claims (10)
1, a kind of rfid device that strengthens 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 the sheet metal both sides, have the power supply magnetic wave on the described sheet metal and leak the opening that passes through, can realize wireless telecommunications by the transmitting/receiving wireless radio frequency electromagnetic between described contactless card and the described card reader, it is characterized in that: the opening on the described sheet metal only is a slit, and described slit is opened on the metal-sheet edges, make that an end in described slit is the disjunct fracture port of described metal-sheet edges, the other end in described slit extends to described sheet metal inside.
2, a kind of rfid device that strengthens induced field strength of electromagnetic wave according to claim 1 is characterized in that: the end with the fracture port that do not link to each other in described slit can be opened in any lateral edges of described sheet metal.
3, a kind of rfid device that strengthens induced field strength of electromagnetic wave according to claim 1 is characterized in that: described slit be shaped as linear.
4, a kind of rfid device that strengthens induced field strength of electromagnetic wave according to claim 1, it is characterized in that: the shape in described slit can be camber line shape.
5, a kind of rfid device that strengthens induced field strength of electromagnetic wave according to claim 1, it is characterized in that: the shape in described slit can be the shape that straight line links to each other and forms with camber line.
6, according to each described a kind of rfid device that strengthens induced field strength of electromagnetic wave of claim 1-5, it is characterized in that: described contactless card is the non-contact passive contactless card, the radio-frequency electromagnetic wave frequency of the frequency of the resonant circuit of series connection and card reader emission is identical in the described contactless card charges to contactless card with the generation electromagentic resonance, also is provided with digit chip in the described contactless card and receives and dispatches electromagnetic antenna.
7, according to each described a kind of rfid device that strengthens induced field strength of electromagnetic wave of claim 1-5, it is characterized in that: described rfid device is installed on the electronic lock, described sheet metal is the electronic lock deckle board, and described card reader is installed on the interior circuit board of electronic lock.
8, according to each described a kind of rfid device that strengthens induced field strength of electromagnetic wave of claim 1-5, it is characterized in that: described rfid device is installed on the gate inhibition.
9, according to each described a kind of rfid device that strengthens induced field strength of electromagnetic wave of claim 1-5, it is characterized in that: the width range in described slit is between 1mm-8mm.
10, a kind of rfid device that strengthens induced field strength of electromagnetic wave according to claim 9 is characterized in that: the width in described slit is best to be 4mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910109116.8ACN101630357B (en) | 2009-07-28 | 2009-07-28 | Radio frequency identification device capable of enhancing electromagnetic wave induction field intensity |
| PCT/CN2010/075496WO2011012071A1 (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 |
|---|---|---|---|
| CN200910109116.8ACN101630357B (en) | 2009-07-28 | 2009-07-28 | Radio frequency identification device capable of enhancing electromagnetic wave induction field intensity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101630357Atrue CN101630357A (en) | 2010-01-20 |
| CN101630357B CN101630357B (en) | 2014-11-26 |
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ID=41575461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910109116.8AExpired - Fee RelatedCN101630357B (en) | 2009-07-28 | 2009-07-28 | Radio frequency identification device capable of enhancing electromagnetic wave induction field intensity |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101630357B (en) |
| WO (1) | WO2011012071A1 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011012071A1 (en)* | 2009-07-28 | 2011-02-03 | Wu Fei | Radio frequency identification device capable of enhancing induction field strength of electromagnetic waves |
| CN105631381A (en)* | 2016-03-25 | 2016-06-01 | 福建师范大学 | Electronic tag reader with antenna signal directional enhancing function |
| CN105975890A (en)* | 2016-06-12 | 2016-09-28 | 北京泰德汇智科技有限公司 | Device for remotely reading ID card by means of synchronous antenna and working method thereof |
| CN106164928A (en)* | 2014-03-31 | 2016-11-23 | 佐藤控股株式会社 | IC tag distribution device and barricade |
| CN107039753A (en)* | 2016-02-04 | 2017-08-11 | Tdk株式会社 | Antenna assembly and the portable wireless apparatus for possessing it |
| CN108702018A (en)* | 2015-12-24 | 2018-10-23 | 艾诺格思公司 | System and method for wireless charging via multiple receiving devices |
| CN112749571A (en)* | 2020-12-28 | 2021-05-04 | 杭州海康威视数字技术股份有限公司 | Card reading terminal and radio frequency identification system |
| US11451096B2 (en) | 2015-12-24 | 2022-09-20 | Energous Corporation | Near-field wireless-power-transmission system that includes first and second dipole antenna elements that are switchably coupled to a power amplifier and an impedance-adjusting component |
| US11462949B2 (en) | 2017-05-16 | 2022-10-04 | Wireless electrical Grid LAN, WiGL Inc | Wireless charging method and system |
| US11463179B2 (en) | 2019-02-06 | 2022-10-04 | Energous Corporation | Systems and methods of estimating optimal phases to use for individual antennas in an antenna array |
| 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 |
| US11863001B2 (en) | 2015-12-24 | 2024-01-02 | Energous Corporation | Near-field antenna for wireless power transmission with antenna elements that follow meandering patterns |
| US12074460B2 (en) | 2017-05-16 | 2024-08-27 | Wireless Electrical Grid Lan, Wigl Inc. | Rechargeable wireless power bank and method of using |
| US12413097B2 (en) | 2021-12-29 | 2025-09-09 | Energous Corporation | Small form-factor devices with integrated and modular harvesting receivers, and shelving-mounted wireless-power transmitters for use therewith |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0112645B1 (en)* | 2000-07-19 | 2016-07-05 | Hanex Co Ltd | housing structure and installation structure for a radio frequency identification indicator and communication method using a radio frequency identification indicator |
| CN101282633B (en)* | 2007-08-30 | 2011-11-23 | 雅可夫·皮欧特·施可尼科夫 | Method and device for 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 electromagnetic wave induction field intensity |
- 2009
- 2009-07-28CNCN200910109116.8Apatent/CN101630357B/ennot_activeExpired - Fee Related
- 2010
- 2010-07-27WOPCT/CN2010/075496patent/WO2011012071A1/enactiveApplication Filing
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011012071A1 (en)* | 2009-07-28 | 2011-02-03 | Wu Fei | Radio frequency identification device capable of enhancing induction field strength of electromagnetic waves |
| US12166363B2 (en) | 2012-07-06 | 2024-12-10 | Energous Corporation | System and methods of using electromagnetic waves to wirelessly deliver power to security cameras and adjusting wireless delivery of power to the security cameras as they move |
| 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 |
| CN106164928A (en)* | 2014-03-31 | 2016-11-23 | 佐藤控股株式会社 | IC tag distribution device and barricade |
| CN108702018B (en)* | 2015-12-24 | 2022-01-18 | 艾诺格思公司 | System and method for wireless charging by multiple receiving devices |
| US11863001B2 (en) | 2015-12-24 | 2024-01-02 | Energous Corporation | Near-field antenna for wireless power transmission with antenna elements that follow meandering patterns |
| CN108702018A (en)* | 2015-12-24 | 2018-10-23 | 艾诺格思公司 | System and method for wireless charging via multiple receiving devices |
| US11451096B2 (en) | 2015-12-24 | 2022-09-20 | Energous Corporation | Near-field wireless-power-transmission system that includes first and second dipole antenna elements that are switchably coupled to a power amplifier and an impedance-adjusting component |
| CN107039753A (en)* | 2016-02-04 | 2017-08-11 | Tdk株式会社 | Antenna assembly and the portable wireless apparatus for possessing it |
| 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 |
| CN105975890A (en)* | 2016-06-12 | 2016-09-28 | 北京泰德汇智科技有限公司 | Device for remotely reading ID card by means of synchronous antenna and working method thereof |
| US11462949B2 (en) | 2017-05-16 | 2022-10-04 | Wireless electrical Grid LAN, WiGL Inc | Wireless charging method and system |
| US12074460B2 (en) | 2017-05-16 | 2024-08-27 | Wireless Electrical Grid Lan, Wigl Inc. | Rechargeable wireless power bank and method of using |
| US11463179B2 (en) | 2019-02-06 | 2022-10-04 | Energous Corporation | Systems and methods of estimating optimal phases to use for individual antennas in an antenna array |
| US11784726B2 (en) | 2019-02-06 | 2023-10-10 | 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 |
| CN112749571A (en)* | 2020-12-28 | 2021-05-04 | 杭州海康威视数字技术股份有限公司 | Card reading terminal and radio frequency identification system |
| US12413097B2 (en) | 2021-12-29 | 2025-09-09 | Energous Corporation | Small form-factor devices with integrated and modular harvesting receivers, and shelving-mounted wireless-power transmitters for use therewith |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101630357B (en) | 2014-11-26 |
| WO2011012071A1 (en) | 2011-02-03 |
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| EE01 | Entry into force of recordation of patent licensing contract | 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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