CN102339374A - Electronic scanning card reader - Google Patents
Electronic scanning card reader Download PDFInfo
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- CN102339374A CN102339374A CN2010102301221A CN201010230122A CN102339374A CN 102339374 A CN102339374 A CN 102339374A CN 2010102301221 A CN2010102301221 A CN 2010102301221A CN 201010230122 A CN201010230122 A CN 201010230122A CN 102339374 A CN102339374 A CN 102339374A
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- card reader
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Abstract
The invention provides an electronic scanning card reader, comprising an antenna and feed control module, a transceiver module, a data processing unit and an external communication interface in sequential connection, wherein the electronic scanning card reader carries out electronic scanning on ambient space, reads information of an RFID (radio frequency identification) card in a working region and locates the information accurately; the electronic scanning card reader uses an echo direction and intensity to judge the card position at the same of reading the information of the RFID card by utilizing a radar echo location principle; a phased-array antenna is adopted to carry out narrow beam round on the ambient space of the card reader, and the electronic scanning card reader has the characteristics of high maneuverability, diversified scanning structures, flexible and variable beam forming, simple system, and high reliability. In addition, the antenna array is divided into different regions and finishes the sending and receiving of signals and beam scanning simultaneously, thus greatly reducing the use number of the card readers and lessening the system cost.
Description
Technical field
The present invention relates to a kind of card reader, relate in particular to a kind of electron scanning card reader.This card reader is used for reading of radio-frequency recognition system radio-frequency card card internal information and card location.
Background technology
The modern management system increases the increasing demand of the tracing and positioning of personnel's article; Especially in the indoor environment of complicacy; In environment such as airport hall, exhibition room, warehouse, supermarket, library, underground parking, mine, usually need confirm that portable terminal or its holder, facility and article are in indoor positional information.But receive the restriction of conditions such as positioning time, bearing accuracy and complicated indoor environment, fairly perfect indoor positioning technology also can't be utilized at present well.
RFID is the abbreviation of Radio Frequency Identification, and promptly RF identification also is commonly called as electronic tag.The RFID technology is an emerging automatic identification technology of rising in recent years.RFID utilizes RF-wise to carry out the noncontact two-way communication, thereby realizes the identification to object, and the relevant information data that collects is transmitted through wireless technology is long-range.The characteristics that have distance of reading (several meters to several one ten meters), penetration capacity strong (can see through packing case and directly read information), antipollution, efficient high (can handle a plurality of labels simultaneously), contain much information have fabulous location recognition application prospect.
General rfid system is made up of radio-frequency card, card reader and computer control system, and the effect of card reader in positioning system is very important.The tradition card reader is often used omnidirectional antenna; Be merely able to read the essential information of radio-frequency card emission and can't discern orientation and the distance between radio-frequency card and the card reader; So when being applied to positioning system, needing to arrange a large amount of card reader and cooperate location algorithm to improve bearing accuracy.
Use the wireless location principle of radar, the antenna of traditional card reader is transformed, make it possess orientation and beam scanning function, then can solve the location difficulty of traditional card reader.
The utility model content
In view of this, fundamental purpose of the present invention is to provide a kind of electron scanning card reader, and solving needs a large amount of card reader and problems that rely on the algorithm location of arranging in the RFID location technology.
For achieving the above object; The invention provides a kind of electron scanning card reader; Said card reader comprises: antenna and feed control module, transceiver module, data processing unit and peripheral communication interface, said antenna and feed control module, transceiver module, data processing unit and peripheral communication interface link to each other successively, wherein; Said electron scanning RFID card reader is carried out electron scanning to surrounding space, read in the perform region rfid card sheet information and to its accurate location.
Can find out that from above technical scheme the present invention has following beneficial effect:
1. electron scanning card reader provided by the invention is utilized the radar return positioning principle, when reading radio-frequency card information, utilizes echo direction and intensity, judges the card position, has solved the difficulty that traditional card reader unit can't be located.
2. electron scanning card reader provided by the invention; The employing phased array antenna is a card reader antenna; Make full use of the characteristics of phased array antenna, adopt electricity to sweep mode, reading card device surrounding space carries out narrow beam and patrols and sweep; Avoid common directional antenna to scan and problem that mechanical scanning antenna movable member is many, have maneuverability height, the variation of scanning system, wave beam and compose that row is flexible and changeable, system simple, high reliability features.
3. electron scanning card reader provided by the invention; Aerial array divides zones of different into; Accomplish emission, reception and the beam scanning of signal simultaneously, be equivalent to the multi-section antenna and work simultaneously, and have the directional beam space and patrol and examine characteristic; Can significantly reduce the usage quantity of card reader in the rfid system, reduce system cost.
Description of drawings
Fig. 1 is an electron scanning card reading system block diagram provided by the invention.
Embodiment
Can be clearer for making to the object of the invention, technical scheme and advantage in persons skilled in the art, read and card is orientated instantiation as below in conjunction with certain RFID radio-frequency card information, and with reference to accompanying drawing, to further explain of the present invention.
Electron scanning card reader according to the invention comprises: antenna and feed control module 1, transceiver module 2, data processing unit 3 and peripheral communication interface 4; Said antenna and feed control module 1, transceiver module 2, data processing unit 3 and peripheral communication interface 4 link to each other successively; Wherein, Said electron scanning card reader is carried out electron scanning to surrounding space, read in the perform region rfid card sheet information and to its accurate location.
Wherein, said antenna and feed control module 1 comprise interconnective antenna 11 and feed control module 12.
Further, said antenna 11 is a phased array antenna, comprises a plurality of antenna surface battle arrays at an angle to each other.
The different array subregion work of said antenna 11 are accomplished emission, reception and comprehensive the patrolling of signal simultaneously and are swept.
Said antenna surface battle array is made up of the radiating element and the phase shifter of two-dimensional arrangements, and 11 pairs of surrounding spaces of said antenna are realized omnidirectional's electron scanning.
Under the effect of feed control module 12, antenna 11 each radiation element are launched the electromagnetic wave of outs of phase, thereby make the continuous deflection of electromagnetism lobe of antenna surface battle array, accomplish scanning; The combination of said a plurality of battle arrays at an angle to each other can make said phased array antenna accomplish omnidirectional's scanning.In a scan period, the card that reads around the card reader in the distance range all can be communicated by letter with the card reader completion, and carries out command adapted thereto.
Further, the electromagnetic radiation that goes out of each antenna surface paroxysm of said antenna 11 is the narrow beam electromagnetic wave.
Further, transceiver module 2 according to the invention comprises signal emission module 21, transmit-receive switch 22 and signal receiving module 23, and said signal transmitter unit 21 links to each other with said transmit-receive switch 22 respectively with said signal receiving module 23.
Said data processing unit 3 is according to communication protocol, and the control card reader is carried out work.Comprise elementary computing module and embedded DSP such as signal filtering and amplifying circuit at data processing unit 3 described in the preferred embodiment of the present invention; Can detect the incoming wave signal intensity and judge the card position according to arrival bearing; Simultaneously the card information of carrying is passed to dsp chip, accomplish the control of communication process.
Said signal transmitter unit passes to the antenna 11 in said antenna and the feed control module 1 through transmit-receive switch after having produced enough electromagnetic energies, said antenna 11 to external radiation, concentrates on this electromagnetic energy on the very narrow direction and forms directional beam.The a certain moment; When getting in the scope that electromagnetic wave covered that said antenna 11 sent with the matching used RFID radio-frequency card of electron scanning card reader according to the invention; This radio-frequency card produces induction current, obtain energy also is activated, and it sends information such as self coding through the card built-in aerial.
After the antenna 11 of electron scanning card reader according to the invention received the carrier signal of radio-frequency card transmission, this signal carried out demodulating and decoding via the signal receiving unit in the transceiver module 2 23.On the one hand, the intensity of basis signal reaches beam direction this moment, and card reader can realize the location to this RFID radio-frequency card; On the other hand; Signal through signal receiving unit 23 demodulating and decodings is able to the filtering amplification in said signal processing unit 3, to its computing identification, read the entrained specific information of card by data processing unit 3; And make corresponding processing and control to different settings, send the action of command signal control executing mechanism.
Further, card reader according to the invention can be through the transmission of the signal between peripheral communication interface 4 and other peripheral hardwares.
Above-described practical implementation instance has carried out further detailed explanation to the object of the invention, technical scheme and beneficial effect.Institute it should be understood that the above is merely practical implementation instance of the present invention, is not limited to the present invention.All any modifications of within spirit of the present invention and principle, being made, be equal to replacement or improve etc., all should be included within protection scope of the present invention.
Claims (8)
1. electron scanning card reader; It is characterized in that; Said electron scanning card reader comprises antenna and feed control module (1), transceiver module (2), data processing unit (3) and peripheral communication interface (4); Said antenna and feed control module (1), transceiver module (2), data processing unit (3) and peripheral communication interface (4) link to each other successively, and said electron scanning card reader is carried out electron scanning to surrounding space, read in the perform region rfid card sheet information and to its accurate location.
2. electron scanning card reader according to claim 1 is characterized in that, said antenna and feed control module (1) comprise interconnective antenna (11) and feed control module (12).
3. electron scanning card reader according to claim 2 is characterized in that, said antenna (11) is a phased array antenna, comprises a plurality of antenna surface battle arrays at an angle to each other.
4. electron scanning card reader according to claim 3 is characterized in that, said antenna surface battle array is made up of the radiating element and the phase shifter of two-dimensional arrangements, and said antenna is realized omnidirectional's electron scanning to surrounding space.
5. electron scanning card reader according to claim 4 is characterized in that, the electromagnetic radiation that each antenna surface paroxysm of said antenna (11) goes out is the narrow beam electromagnetic wave.
6. according to the described electron scanning card reader of each claim among the claim 3-5; It is characterized in that; Said transceiver module (2) comprises signal emission module (21), transmit-receive switch (22) and signal receiving module (23), and said signal transmitter unit (21) links to each other with said transmit-receive switch (22) respectively with said signal receiving module (23).
7. electron scanning card reader according to claim 6 is characterized in that, said data processing unit (3) is according to communication protocol, and the control card reader is carried out work.
8. electron scanning card reader according to claim 7 is characterized in that, said card reader is through the transmission of the signal between peripheral communication interface (4) and other peripheral hardwares.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102301221A CN102339374A (en) | 2010-07-19 | 2010-07-19 | Electronic scanning card reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102301221A CN102339374A (en) | 2010-07-19 | 2010-07-19 | Electronic scanning card reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102339374A true CN102339374A (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102301221A Pending CN102339374A (en) | 2010-07-19 | 2010-07-19 | Electronic scanning card reader |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109462040A (en) * | 2018-10-30 | 2019-03-12 | 深圳市航天华拓科技有限公司 | Phased array antenna and RFID system applied to RFID system |
| US11758413B2 (en) | 2020-09-24 | 2023-09-12 | Pegatron Corporation | Roadside apparatus and communication beam pointing direction adjusting method thereof |
Citations (5)
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| CN101038618A (en) * | 2006-12-01 | 2007-09-19 | 华南理工大学 | Intelligent antenna system of RFID reading machine |
| CN101271510A (en) * | 2008-03-04 | 2008-09-24 | 天津大学 | Anti-collision radio frequency recognizing method based on space division multiple access |
| US20090002165A1 (en) * | 2007-06-28 | 2009-01-01 | Micron Technology, Inc. | Method and system of determining a location characteristic of a rfid tag |
| WO2009035723A1 (en) * | 2007-09-11 | 2009-03-19 | Rf Controls, Llc | Radio frequency signal acquisition and source location system |
| CN101755366A (en) * | 2007-07-24 | 2010-06-23 | 倍加福有限责任公司 | Slot antenna and method for RFID |
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2010
- 2010-07-19 CN CN2010102301221A patent/CN102339374A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101038618A (en) * | 2006-12-01 | 2007-09-19 | 华南理工大学 | Intelligent antenna system of RFID reading machine |
| US20090002165A1 (en) * | 2007-06-28 | 2009-01-01 | Micron Technology, Inc. | Method and system of determining a location characteristic of a rfid tag |
| CN101755366A (en) * | 2007-07-24 | 2010-06-23 | 倍加福有限责任公司 | Slot antenna and method for RFID |
| WO2009035723A1 (en) * | 2007-09-11 | 2009-03-19 | Rf Controls, Llc | Radio frequency signal acquisition and source location system |
| CN101271510A (en) * | 2008-03-04 | 2008-09-24 | 天津大学 | Anti-collision radio frequency recognizing method based on space division multiple access |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109462040A (en) * | 2018-10-30 | 2019-03-12 | 深圳市航天华拓科技有限公司 | Phased array antenna and RFID system applied to RFID system |
| US11758413B2 (en) | 2020-09-24 | 2023-09-12 | Pegatron Corporation | Roadside apparatus and communication beam pointing direction adjusting method thereof |
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Application publication date: 20120201 |