CN103942513A - Mobile reader - Google Patents
Mobile reader Download PDFInfo
- Publication number
- CN103942513A CN103942513A CN201410108966.7A CN201410108966A CN103942513A CN 103942513 A CN103942513 A CN 103942513A CN 201410108966 A CN201410108966 A CN 201410108966A CN 103942513 A CN103942513 A CN 103942513A
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- CN
- China
- Prior art keywords
- mobile phone
- label
- signal
- portable reader
- controller
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Classifications
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M2250/00—Details of telephonic subscriber devices
- H04M2250/04—Details of telephonic subscriber devices including near field communication means, e.g. RFID
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephone Function (AREA)
Abstract
Disclosed is a mobile reader. A controller of a mobile device is connected with a receiver module. The receiver module is coupled with an antenna of the mobile device. A radio frequency portion of the mobile device is used as a forward link to send signals to activate a UHFTTO tag. A UHFTTO tag reflection signal detects a backscattering tag ID and data through the receiver module and inputs the backscattering tag ID and data to the controller of the mobile device. Compared with an existing system with NFCRFID, the mobile reader has the advantages of being far in reading distance, high in speed, capable of conducting multi-tag identification and the like; the UHF tag only needs a chip and a single-layer printed antenna, and compared with an NFC tag, the cost is lower; the radio frequency portion of a mobile phone is used as the forward link to activate the UHF tag, and integration of an additional radio frequency circuit can be omitted, so that the integrated mode is simplified, and the cost is reduced.
Description
Technical field
The invention belongs to radio frequency identification (RFID) field, relate in particular to a kind of method in the terminals such as mobile phone that ultrahigh frequency RFID reader is integrated into.
Background technology
Radio frequency identification system at least comprises a RFID reader and one group of electronic tag.Electronic tag is all passive label conventionally, and the radio frequency energy of being launched by reader activates.In addition electronic tag can be with additional battery, is operated in active and half active mode.Reader is realized electronic labeling information transmission (forward link) by the carrier wave of modulate emission; Meanwhile, electronic tag passes through the carrier signal of reflection varying strength to reader, is commonly referred to " backscattering " (return link).Rule of communication between reader and electronic tag is commonly referred to idle port communication agreement.
At present, there are a large amount of different RFID air interface protocols in RFID field, and these agreements are classified with reader or the first initiating communication of electronic tag conventionally, if the first initiating communication of reader is called RTF(Reader Talk First, reader is first said) agreement.If the first initiating communication of electronic tag, is called TTF(Tag Talk First, label is first said) agreement.A branch of TTF is called TTO(Tag Talk Only, and only label is said) agreement, at this moment reader is only launched carrier only signal, never needs modulated carrier, as the TTO agreement in ISO/IEC 18000-64 and IP-X agreement.In identifying, electronic tag only needs reader to launch enough radio-frequency (RF) energy signals to activate label, does not need reader to launch any order.After electronic tag is activated, send self ID and data to reader in backscattering mode.In the time that many labels exist simultaneously, just need the anti-collision mechanism of certain way.TTO label is by time interval transmitting ID and data random, and ID and data that reader only needs record to receive can realize.
Although participate in without reader, the anti-collision performance of TTO and RTF agreement is equally matched.But when entering reader wave beam or reader when the label of TTO agreement and start to launch, label powers on, and will activate and automatically send the ID of self, therefore identifying application scenario has more advantage at a high speed.TTO label may be as little to 300 us launch time, and label powers on and the reaction time is extremely short, and typical case's time is 150 us.Even power on be less than 1ms in the situation that at label, identification label back-scattered signal that also can be correct.Different with RTF system, the reader that TTO system produces disturbs very little, and multiple TTO readers can be worked simultaneously.
Now, mobile phone is ubiquitous and powerful, has unrivaled advantage as handheld RFID equipment.Many rfid systems can be connected in the handheld terminal including mobile phone, and normally by serial ports, USB interface, bluetooth or Wi-Fi, the general and RFID reader of this terminal integrates, or is arranged on handheld RFID reader.But, because needing a Full Featured RFID, reads and a mobile terminal this mounting means, have that volume is large, clumsiness, high in cost of production shortcoming seem.
If RFID reader is integrated in mobile phone, make mobile phone can read RFID label, so not only can reduce costs, all right reduced volume can also be used RFID function in mobile-payment system, Application in Anti-counterfeiting.US Patent No. 8355670, US8260199 and US8577290, through having provided similar suggestion, are mainly NFC(Near Field communications RFID, near-field communication RFID) module integration is in mobile phone.NFC RFID reader is usually operated at 13.56MHz frequency range, and this generic module comprises a NFC antenna, radio circuit conventionally, and receives the decode part.Now, this type of NFC module has realized in as Samsung Galaxy 3 integrated at some smart mobile phones.In fact, say that these NFC modules " splicing ", to more applicable in mobile phone, because the realization of these functions of modules is all completely independent with mobile phone, just communicate in mobile phone by USB interface.NFC label generally needs multi-sheet printed tours antenna, common also very expensive.Read distance also very near, generally can only read several millimeters.Typical case can only read a label next time.
US Patent No. 782685 provides a kind of existing RFID function also to have the integrated circuit of mobile communication function.This lsi development cost is high, is used for replacing the radio frequency part in mobile phone.Then, smart mobile phone of today is the single SOC(SOC (system on a chip) based on integrated controller, radio frequency, baseband circuit mainly) exploitation, become comparatively difficulty at the integrated a like this integrated circuit of existing system.
Summary of the invention
The object of the invention is RFID reader functionality to be integrated in mobile phone, overcome existing mobile phone reader and read the problems such as distance is short, cost is high, power consumption is large.
The technical scheme that the present invention adopted is for achieving the above object: a kind of portable reader, the controller 2 of mobile device connects receiver module, the radio frequency part of mobile device is sent signal activation UHF TTO label 6 as forward link, and UHF TTO label 6 reflected signals detect backscattered label ID and data by receiver module and input the controller 2 of mobile device.
Described mobile device is mobile phone 1, comprises controller 2, frequency synthesizer 3, power amplifier 4 and antenna 5, and frequency synthesizer 3 connects controller 2.
Described receiver module is AM receiver 7 or relevant low-converter 10.
Described AM receiver 7 comprises antenna 8 and amplitude modulation detecting amplifier 9, and AM receiver 7 is installed on mobile phone 1 by external or embedded mode.
Described relevant low-converter 10 comprises antenna 8, frequency mixer or quadrature down converter 11 and baseband amplifier 12, and the output signal of mobile phone frequency compositor 3 exports frequency mixer or quadrature down converter 11 to by coupling scheme.
It is mobile communication signal, WIFI signal or Bluetooth signal that described radio frequency part is sent signal as forward link, and the signal of communication of mobile phone 1 is launched a non-modulation carrier signal by programming or allowed a false calling of mobile phone transmission or false note with active electron label.
The signal of communication of mobile phone 1 also comprises CDMA or WCDMA modulated carrier.
The TTO agreement that described UHF TTO label 6 adopts is ISO/IEC 18000-6D, ISO/IEC 18000-64 or IP-X agreement.
The backscattered label ID that described receiver module detects and data are directly transferred on the hardware interface of mobile phone 1 controller 2 and decode by software, or by backscattered label ID and decoding data and decoded information exchange is crossed to USB interface or serial ports transfers to mobile phone 1.
Described label is operated on one or several combination of frequencies of 850MHz, 900MHz, 1800MHz or 1900MHz.
Portable reader of the present invention, adopts NFC(13.56MHz with existing system) RFID is different, adopts UHF RFID, UHF RFID compares with NFC, have that reading distance is far away, speed fast, can many tag recognition etc. advantage; UHF label only needs a chip and individual layer printed antenna, aspect cost, compares and has potential advantages with NFC label; The radio frequency part that employing mobile phone itself carries, can be saved integrated extra radio circuit, thereby can simplify integration mode to activate UHF label as forward link, reduces costs.
Brief description of the drawings
Fig. 1 is that the embodiment of the present invention one is integrated on mobile phone amplitude modulation receiver in order to receive the reader schematic diagram of label back-scattered signal.
Fig. 2 is that the embodiment of the present invention two is integrated on mobile phone relevant low-converter in order to receive the reader schematic diagram of label back-scattered signal.
Embodiment
Embodiment mono-
As shown in Figure 1, mobile device adopts mobile phone 1, mobile phone 1 comprises controller 2, frequency synthesizer 3, power amplifier 4 and antenna 5, the radio frequency part of mobile phone is sent signal activation UHF TTO label 6 as forward link, the reflected signal of UHF TTO label 6 detects backscattered label ID and data by receiver module and inputs the controller 2 of mobile device, the controller 2 of mobile phone connects this AM receiver 7, this AM receiver 7 is coupled with mobile device antenna 5, AM receiver 7 can be increased on mobile phone by external or embedded mode, this AM receiver 7 comprises the antenna 8 and the amplitude modulation detecting amplifier 9 that are independent of outside mobile phone self, this AM receiver 7 is in order to detect backscattered label ID and data, the raw bits data stream of reverse signal or decoded data stream are sent on cell phone controller and used.If what controller received is original data stream, the available software mode of controller own is decoded, thereby reduces the demand to hardware decoder.
Controller 2 is except realizing display driver, call on mobile phone operating system, passing through, the functions such as Wi-Fi interconnection network, also according to local statues, according to the instruction of base station, to realize uplink downlink control by frequency synthesizer 3." 1G ", " 2G ", " 3G " different with different communication systems concrete methods of realizings such as " 4G ", but they are all operated in 850,900,1800 or 1900MHz frequency range, and high transmit power can reach 3W.These carrier signals can activate one or one group of UHF TTO label 6, and electronic tag sends their ID by backscattering, and decipherment distance can reach several meters.
The present invention adopt radio frequency part that mobile phone itself carries as forward link to activate UHF label.Such as employing is operated in 850MHz-1900MHz uhf band mobile communication signal, peak power can reach 3W.Also can adopt integrated Wi-Fi and Bluetooth transmission signal on mobile phone.If use the signal of communication of mobile phone, can make mobile phone in a non-modulation carrier signal of transmitting by programming, or allow mobile phone send false a calling or false note, with active electron label.
It is illegal due to order and data in employing RFID communication protocol, mobile phone signal being modulated, and the present invention advises adopting ISO/IEC 18000-64 or IP-X agreement.TTO agreement does not need transmitting carrier wave to carry out any modulation.Reflection modulation signal rate is 256kbits/s left and right, and this is well below the data rate of 3G and 4G cell phone.Owing to RFID reflected signal can being separated by filtering from mobile phone modulation signal, so CDMA or WCDMA modulated carrier also can carry out active electron label for RFID forward link.CDMA or WCDMA only can improve the noise level of RFID back-scattered signal.The short reaction time of TTO RFID label is 150us, can within the 300us time, complete ID transmission.Like this, can only to need about 500u s to transmit just much of that for mobile phone.Because forward direction road adopts non-carrier (boc) modulated signals, TTO RFID reader disturbs very little each other, multiple mobile phones can read one or more label simultaneously, label can be operated in 850MHz, and 900MHz, on one or several combination of frequencies of 1800MHz or 1900MHz, label antenna can respond any carrier wave or the whole carrier wave that mobile phone sends, label antenna bandwidth is enough wide to cover 850MHz, 900MHz, one or several combination of frequencies of the mobile phones such as 1800MHz or 1900MHz.
The present embodiment only needs to increase a midget receiver module cheaply to mobile phone, for closely application, a simple AM receiver 7 can meet application, for a real low cost application, can directly be transferred to the hardware interface of cell phone controller from the original bit fluxion information of AM receiver output, and decode by software.In addition, the RFID bit data stream of reflected signal can also be decoded, and decoded information exchange is crossed to USB interface transfer to cell phone controller.If while being subject to CDMA or the modulation of WCDMA signal in order to obtain better performance, particularly carrier wave, can increase a correlation receiver in order to processing RF ID back-scattered signal.Correlation receiver can adopt the copy of output signal and the RFID back-scattered signal receiving to carry out relevant treatment, can obtain better performance in noise circumstance, also can increase and read distance.
The present embodiment is very little on the impact of mobile phone hardware, has low-cost advantage.Only needing to increase by one spreads id information original or decoding to be passed to the connected mode of controller.This link can be USB, serial ports or control other interfaces.Because AM receiver 7 sensitivity are not high, frequency is not optional, and be easily subject to noise (phase noise transmitting as outside or mobile phone oneself), its major defect is that decipherment distance is shorter.
Embodiment bis-
As shown in Figure 2, the mobile device of employing is mobile phone 1, identical with embodiment mono-, comprises controller 2, frequency synthesizer 3, power amplifier 4 and antenna 5.In mobile phone 1, increase a relevant low-converter 10, comprised antenna 8, frequency mixer 11 and baseband amplifier 12.The output signal of mobile phone frequency compositor 3 exports frequency mixer or quadrature down converter 11 to by coupling scheme (direct-coupling, circulator or alternate manner).Equally, the ID of reception and data can transfer in cell phone controller and be used.
This embodiment is difficult for being disturbed by external noise or phase noise, and frequency of operation is optional, and out-of-band noise can be eliminated, thereby has higher sensitivity.In-band noise can be offset by the mode of carrying out mixing with the local oscillation signal copy of mobile phone transmitting.
It is higher that embodiment bis-and embodiment mono-compare cost, and need and mobile phone hardware has higher integrated level.Except being connected with cell phone controller, also need to connect the radio frequency part of mobile phone, need to adopt direct-coupling device, circulator or alternate manner to be used for obtaining transmitting of a small amount of mobile phone frequency compositor generation, and for low-converter, tag reflection signal be carried out to mixing.
The present invention can be in following applications, and if the electronic tag by items scanning is with the checking true and false, or the electronic tag embedding on scanning billboard is to obtain from network the more information of these commodity, also can be used for directly this promotion item being placed an order etc.Obviously, this technology can be used the occasion of other any RFID of needs reader, as supply chain management in industry or commercial situations and item tracking field.
The present invention is described by embodiment, and those skilled in the art know, without departing from the spirit and scope of the present invention, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under instruction of the present invention, can modify to adapt to concrete situation and material and can not depart from the spirit and scope of the present invention these features and embodiment.Therefore, the present invention is not subject to the restriction of specific embodiment disclosed herein, and the embodiment within the scope of all the application's of falling into claim belongs to protection scope of the present invention.
Claims (10)
1. a portable reader, it is characterized in that: the controller (2) of mobile device connects receiver module, the radio frequency part of mobile device is sent signal activation UHF TTO label (6) as forward link, and UHF TTO label (6) reflected signal detects backscattered label ID and data by receiver module and inputs the controller (2) of mobile device.
2. the portable reader of one according to claim 1, it is characterized in that: described mobile device is mobile phone (1), comprise controller (2), frequency synthesizer (3), power amplifier (4) and antenna (5), frequency synthesizer (3) connects controller (2).
3. the portable reader of one according to claim 1, is characterized in that: described receiver module is AM receiver (7) or relevant low-converter (10).
4. the portable reader of one according to claim 3, is characterized in that: described AM receiver (7) comprises antenna (8) and amplitude modulation detecting amplifier (9), and AM receiver (7) is installed on mobile phone (1) by external or embedded mode.
5. the portable reader of one according to claim 3, it is characterized in that: described relevant low-converter (10) comprises antenna (8), frequency mixer or quadrature down converter (11) and baseband amplifier (12), the output signal of mobile phone frequency compositor (3) exports frequency mixer or quadrature down converter (11) to by coupling scheme.
6. the portable reader of one according to claim 1, it is characterized in that: it is mobile communication signal, WIFI signal or Bluetooth signal that described radio frequency part is sent signal as forward link, the signal of communication of mobile phone (1) is launched a non-modulation carrier signal by programming or is allowed a false calling of mobile phone transmission or false note with active electron label.
7. the portable reader of one according to claim 6, is characterized in that: the signal of communication of mobile phone (1) also comprises CDMA or WCDMA modulated carrier.
8. the portable reader of one according to claim 1, is characterized in that: the TTO agreement that described UHF TTO label (6) adopts is ISO/IEC 18000-6D, ISO/IEC 18000-64 or IP-X agreement.
9. the portable reader of one according to claim 1, it is characterized in that: the backscattered label ID that described receiver module detects and data are directly transferred on the hardware interface of mobile phone (1) controller (2) and decode by software, or by backscattered label ID and decoding data and decoded information exchange is crossed to USB interface or serial ports transfers to mobile phone (1).
10. the portable reader of one according to claim 1, is characterized in that: described label is operated on one or several combination of frequencies of 850MHz, 900MHz, 1800MHz or 1900MHz.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108966.7A CN103942513A (en) | 2014-03-24 | 2014-03-24 | Mobile reader |
| PCT/CN2014/074515 WO2015143731A1 (en) | 2014-03-24 | 2014-04-01 | Mobile reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108966.7A CN103942513A (en) | 2014-03-24 | 2014-03-24 | Mobile reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103942513A true CN103942513A (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410108966.7A Pending CN103942513A (en) | 2014-03-24 | 2014-03-24 | Mobile reader |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103942513A (en) |
| WO (1) | WO2015143731A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104992134A (en) * | 2015-08-06 | 2015-10-21 | 成都鼎智汇科技有限公司 | Label fast processing method |
| CN108342941A (en) * | 2018-04-04 | 2018-07-31 | 赵怡雯 | Sidewalk for visually impaired people automatic identification and positioning system |
| CN112434774A (en) * | 2020-11-20 | 2021-03-02 | 上海坤锐电子科技有限公司 | Electronic tag demodulation circuit and electronic tag |
| WO2021212303A1 (en) * | 2020-04-21 | 2021-10-28 | Oppo广东移动通信有限公司 | Electronic tag and system thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201134107Y (en) * | 2007-12-22 | 2008-10-15 | 湖北物资流通技术研究所 | Radio frequency recognition network antenna |
| CN101923623A (en) * | 2009-06-09 | 2010-12-22 | 上海坤锐电子科技有限公司 | Mobile phone platform-based radio frequency identification system |
| CN102546802A (en) * | 2012-01-10 | 2012-07-04 | 江苏省电力公司扬州供电公司 | Radio-frequency-identification-technology-based data acquisition and instant messaging transmission system and transmission method |
| CN103440469A (en) * | 2013-09-11 | 2013-12-11 | 天津工业大学 | RFID (radio frequency identification) reader based on adaptive smart antennae |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7446646B2 (en) * | 2003-06-30 | 2008-11-04 | Nokia Corporation | System and method for supporting multiple reader-tag configurations using multi-mode radio frequency tag |
| US20070205865A1 (en) * | 2006-03-02 | 2007-09-06 | Broadcom Corporation, A California Corporation | Wireless communication device with RFID reader |
| CN103577775A (en) * | 2012-07-23 | 2014-02-12 | 刘赟宇 | Method for searching for and identifying personal articles through mobile phone |
| CN103500348B (en) * | 2013-09-27 | 2016-08-31 | 爱康普科技（大连）有限公司 | A kind of RFID communication method of enhancing |
-
2014
- 2014-03-24 CN CN201410108966.7A patent/CN103942513A/en active Pending
- 2014-04-01 WO PCT/CN2014/074515 patent/WO2015143731A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201134107Y (en) * | 2007-12-22 | 2008-10-15 | 湖北物资流通技术研究所 | Radio frequency recognition network antenna |
| CN101923623A (en) * | 2009-06-09 | 2010-12-22 | 上海坤锐电子科技有限公司 | Mobile phone platform-based radio frequency identification system |
| CN102546802A (en) * | 2012-01-10 | 2012-07-04 | 江苏省电力公司扬州供电公司 | Radio-frequency-identification-technology-based data acquisition and instant messaging transmission system and transmission method |
| CN103440469A (en) * | 2013-09-11 | 2013-12-11 | 天津工业大学 | RFID (radio frequency identification) reader based on adaptive smart antennae |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104992134A (en) * | 2015-08-06 | 2015-10-21 | 成都鼎智汇科技有限公司 | Label fast processing method |
| CN104992134B (en) * | 2015-08-06 | 2018-05-11 | 深圳市明华澳汉智能卡有限公司 | Label immediate processing method |
| CN108342941A (en) * | 2018-04-04 | 2018-07-31 | 赵怡雯 | Sidewalk for visually impaired people automatic identification and positioning system |
| WO2021212303A1 (en) * | 2020-04-21 | 2021-10-28 | Oppo广东移动通信有限公司 | Electronic tag and system thereof |
| CN112434774A (en) * | 2020-11-20 | 2021-03-02 | 上海坤锐电子科技有限公司 | Electronic tag demodulation circuit and electronic tag |
| CN112434774B (en) * | 2020-11-20 | 2023-10-31 | 上海坤锐电子科技有限公司 | Demodulation circuit of electronic tag and electronic tag |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015143731A1 (en) | 2015-10-01 |
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Application publication date: 20140723 |