CN101303736A - Multi-protocol ultrahigh frequency reader-writer - Google Patents
Multi-protocol ultrahigh frequency reader-writer Download PDFInfo
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- CN101303736A CN101303736A CNA2007101071377A CN200710107137A CN101303736A CN 101303736 A CN101303736 A CN 101303736A CN A2007101071377 A CNA2007101071377 A CN A2007101071377A CN 200710107137 A CN200710107137 A CN 200710107137A CN 101303736 A CN101303736 A CN 101303736A
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Abstract
The invention provides a multiprotocol UHF reder which adopts a label with a frequency band of 860 to 960MHz and supporting various protocols. The reder consists of a digital control module, a RF transmitting module, a local oscillator signal module, a RF receiving module, a receiving and transmitting isolation module, a RF switch set and an antenna group. The reder integrates a plurality of international standards of UHF like EPC Class 1, EPC Class 1 Gen 2 and ISO18000-6PART B. The reder adopts a modularization design; the circuits are simple and the cost is low. The reder can be applied to a plurality of different occasions like logistics and electronic toll collection.
Description
Technical field
This patent relates to a kind of multi-protocol ultrahigh frequency reader-writer, is specifically related to fields such as frequency microwave technology, measuring technology, electromagnetic theory, especially belongs to the radio RF recognition technology field.
Background technology
Radio frequency identification RFID is a kind of non-contacting automatic identification technology, and it utilizes radiofrequency signal and space to be coupled to realize the automatic identification to object.Compare with bar code, the RFID technology has waterproof, antimagnetic, long service life, read on distance, the label data can encrypt, store advantages such as data capacity is big, the canned data change is convenient.RFID brings deep variation to the human lives.The RFID technology is used different occasions, and as logistics, non-parking charge etc., different according to industry and application scenario have different requirements to aspects such as the RFID standard of read write line, interfaces.But there is following defective in the read write line that generally uses at present: generally be the read write line of single standard 1,, be unfavorable for using widely; 2, circuit complexity, the modular design degree is low, is unfavorable for producing in batches; The cost costliness is difficult to be fit to the application of multiple occasion; 3, the antenna sets number is few, and the read write line coverage is little; 4, the communication interface with host computer is single.Therefore, this patent provides a kind of multi-protocols compatibility, and degree of modularity height is with low cost, and many antennas time-sharing work increases coverage, multiple interfaces and the read write line of depositing.Can effectively be applicable to the different application of a plurality of occasions.
Summary of the invention
For solving existing above-mentioned defective, this patent provides a kind of multi-protocol ultrahigh frequency reader-writer, adopts modular design.This read write line is made up of digital control module, radio frequency sending module, local oscillation signal module, Receiver Module, transmitting-receiving isolation module and radio-frequency (RF) switch group and antenna sets.
A kind of multi-protocol ultrahigh frequency reader-writer of this patent, digital control module is made up of system MCU, power module, memory module, interface module, demonstration, Keysheet module, the coding and decoding of multi-protocols, the power control of radio-frequency (RF) receiving and transmission module, the frequency configuration of PLL phaselocked loop is finished by digital control module; Interface circuit provides multiple communication interface with host computer such as USB, RS232/485 and network interface.
A kind of multi-protocol ultrahigh frequency reader-writer of this patent, Receiver Module comprises detuner, intermediate frequency (IF) Linear amplifier, bandwidth-limited circuit, the power control circuit of comparer and detuner.Radio-frequency (RF) receiving circuit does not adopt the ADC conversion, directly with comparer analog signal conversion is become digital signal.
A kind of multi-protocol ultrahigh frequency reader-writer of this patent, the radio frequency sending module is made of a slice power amplifier, and circuit is simple, and cost is low.
A kind of multi-protocol ultrahigh frequency reader-writer of this patent, the local oscillation signal module is made of PLL+VCO circuit, local oscillator driving circuit, power splitter, by digital control module the frequency of local oscillation signal is set, and can work under frequency hopping or fixed frequency mode.
A kind of multi-protocol ultrahigh frequency reader-writer of this patent, the transmitting-receiving isolation module is made up of transmitting-receiving buffer circuit or network, and the radio-frequency (RF) switch group is made up of the radio-frequency (RF) switch of quadruple pass control, is used to switch the antenna of different azimuth.
A kind of multi-protocol ultrahigh frequency reader-writer of this patent, antenna sets have four UHF antennas.
A kind of multi-protocol ultrahigh frequency reader-writer of this patent, the receiving sensitivity height; Adopt modular design, circuit is simple.
The beneficial effect of this patent is that circuit is simple, and is with low cost, is easy to realize, easy to maintenance simple; The receiving sensitivity height of this device is read the distance of label, can reach about 10 meters, has improved the competitiveness of product; Because the flexible design of system, antenna footprint is wide, and this read write line is fit to the application in various identifications field.
The characteristics of this patent:
1, compatible multi-protocols as EPC Class1, EPC Class1 Gen2 and ISO18000-6PARTB, are beneficial to widely and use.
2, circuit is simple, and modular design degree height is beneficial to batch process; With low cost, be fit to the application of multiple occasion.
3, the antenna sets number is many, 4 groups of antennas is arranged, the read write line wide coverage.
4, provide a plurality of communication interfaces that are connected with host computer, as USB, RS232/485 and network interface.
5, receiving sensitivity height, the distance of read write tag.
6, the radio frequency transtation mission circuit adopts the 100%ASK modulation system, and the ASK modulation system adopts power amplifier to constitute, and circuit is succinct, and is with low cost;
7, receiving circuit adopts comparer to be directly converted to digital signal, does not adopt the ADC conversion, and circuit is simple, and is with low cost.
Description of drawings
Below in conjunction with drawings and Examples this patent is described further, in the accompanying drawing:
Fig. 1 is the overall system block scheme of this patent.Wherein: 100-digital control module, 101-radio frequency sending module, 102-local oscillation signal module, 103-Receiver Module, 104-transmitting-receiving isolation module and radio-frequency (RF) switch group, 105-antenna sets.
Fig. 2 is the systematic schematic diagram of this patent.Wherein: 1-system MCU, 2-power module, 3-memory module, the 4-interface module, 5-shows, Keysheet module, the power control circuit of 6-sending module, the power amplifier of 7-sending module, the 8-PLL+VCO circuit, 9-local oscillation signal driver module, 10-power splitter, 11-receives and dispatches buffer circuit, the 12-detuner, 13-intermediate frequency (IF) Linear amplifier, 14-bandwidth-limited circuit, the 15-comparer, the power control circuit of 16-detuner, 17-dual-mode antenna, 18-radio-frequency (RF) switch, 200-signal software decode, 201-signal software coding, A-Enable Pin, B-input end.
Embodiment
In the preferred embodiment of this patent,, be the overall system block scheme of this patent with reference to Fig. 1.Wherein: digital control module 100, radio frequency sending module 101, local oscillation signal module 102, Receiver Module 103, transmitting-receiving isolation module and radio-frequency (RF) switch group 104, antenna sets 105 construction systems.Digital control module 100 mainly is the management of system, comprises the encoding and decoding of multi-protocols, display keyboard, the power control of radio circuit; Interface protocol etc.; Receiver Module 103 and radio frequency sending module 101 significant feature are transmitting-receivings of RF signal; Local oscillation signal module 102 provides the local oscillation signal of a 860MHz～960MHz high precision and degree of stability.
With reference to Fig. 2, digital baseband block 100 is by system MCU 1, power module 2, and memory module 3, interface module 4 shows, Keysheet module 5 forms; System MCU 1 is finished the management of system, the encoding and decoding of multi-protocols, and the power control that the frequency of phaselocked loop and transceiver module are set, the encoding and decoding of multi-protocols have provided signal software decode 200 in system MCU, 201 two software modules of signal software coding, its coding/decoding module all adopts the method for Measuring Time width.Wherein interface module 4 provides a plurality of communication interfaces that are connected with host computer, as USB, and RS232/485 and network interface.Radio frequency sending module 101 constitutes the 100%ASK modulation circuit by a slice power amplifier 7, and the input end B of power amplifier 7 links to each other with local oscillation signal, and the Enable Pin A of power amplifier links to each other with the transmission signal, and circuit is simple, and cost is low; The power control circuit 6 of sending module adopts the PWM mode to regulate the power of sending module by digital control module 100.Local oscillation signal module 102 is produced the signal of 860MHz～960MHz by PLL+VCO circuit 8, after 9 drivings of local oscillation signal driver module, 860MHz～960MHz radiofrequency signal through power splitter 10 output two-way supplies radio frequency sending module 101 and Receiver Module 103 as local oscillation signal respectively.The radiofrequency signal that detuner 12 in the Receiver Module 103 will receive UHF dual-mode antenna 17 transforms to the IF signal, after 13 amplifications of intermediate frequency (IF) Linear amplifier, obtain amplified analog signal, but a large amount of clutters is arranged in this signal, need carry out filtering through bandwidth-limited circuit 14, filtered simulating signal is directly sent into comparer 15, obtains digital signal, is decoded by system MCU 1 enabling signal software decode module 200; The power of detuner can be regulated by power control circuit 16 in addition.Transmitting-receiving buffer circuit 11 in transmitting-receiving isolation module and the radio-frequency (RF) switch group 104 can be circulator or diplexer etc., and the radio-frequency (RF) switch group is made of four radio-frequency (RF) switch 18, and four radio-frequency (RF) switch 18 can be carried out gating control by system MCU 1.Antenna sets 105 is made of four UHF dual-mode antennas 17.
Claims (5)
1, a kind of multi-protocol ultrahigh frequency reader-writer comprises: digital control module, radio-frequency (RF) receiving and transmission module, local oscillation signal module, transmitting-receiving isolation module and radio-frequency (RF) switch group and antenna sets constitute, and it is characterized in that:
Digital control module is responsible for the encoding and decoding of multi-protocols, the frequency configuration of PLL phaselocked loop and the power control of radio-frequency (RF) receiving and transmission module;
The radio frequency sending module is made of mmic power amplifier;
Receiver Module is made of detuner, intermediate frequency amplifier, wave filter, comparer.
2, a kind of multi-protocol ultrahigh frequency reader-writer according to claim 1 is characterized in that: wherein said multi-protocols comprise EPC Class1, EPC Class1 Gen2 and ISO18000-6PART B etc., and the method for Measuring Time width is adopted in the multi-protocols encoding and decoding.
3, a kind of multi-protocol ultrahigh frequency reader-writer according to claim 1 is characterized in that: the PWM mode is adopted in the power control of wherein said radio frequency sending module and Receiver Module.
4, a kind of multi-protocol ultrahigh frequency reader-writer according to claim 1, it is characterized in that: wherein said radio frequency sending module is made of a slice power amplifier, the input end of power amplifier links to each other with local oscillation signal, and the Enable Pin of power amplifier links to each other with the transmission signal.
5, a kind of multi-protocol ultrahigh frequency reader-writer according to claim 1, it is characterized in that: wherein said Receiver Module is made of detuner, intermediate frequency amplifier, wave filter, comparer, and detuner adopts the I/Q orthogonal manner; Intermediate frequency amplifier adopts the high-speed linear amplifier; Wave filter adopts bandpass filtering, and the signal of wave filter output directly links to each other with comparer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710107137A CN101303736B (en) | 2007-05-08 | 2007-05-08 | Multi-protocol ultrahigh frequency reader-writer |
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| CN200710107137A CN101303736B (en) | 2007-05-08 | 2007-05-08 | Multi-protocol ultrahigh frequency reader-writer |
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| CN101303736A true CN101303736A (en) | 2008-11-12 |
| CN101303736B CN101303736B (en) | 2012-09-19 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129579A (en) * | 2010-08-25 | 2011-07-20 | 成都西谷曙光数字技术有限公司 | System and method for improving reading-writing mode of ISO-18000-7 international standard label |
| CN102545952A (en) * | 2012-01-20 | 2012-07-04 | 昆山创通微电子有限公司 | Wireless transceiver |
| CN102609738A (en) * | 2011-01-25 | 2012-07-25 | 上海互惠信息技术有限公司 | RFID (radio frequency identification device) multi-antenna reader-writer |
| CN102646205A (en) * | 2012-03-20 | 2012-08-22 | 中兴通讯股份有限公司 | Reader driving device, method and reader control system |
| CN102663458A (en) * | 2012-03-16 | 2012-09-12 | 江苏瑞福智能科技有限公司 | Multi-core UHF RFID reader-writer realized by application software |
| CN101923654B (en) * | 2009-06-09 | 2012-10-17 | 上海坤锐电子科技有限公司 | Ultrahigh frequency reader-writer suitable for remote security control by different users |
| CN103106415A (en) * | 2011-11-09 | 2013-05-15 | 上海宝信软件股份有限公司 | Intelligent radio frequency identification (RFID) reader used for rapid positioning of annular track conveying vehicle |
| CN103279777A (en) * | 2013-05-06 | 2013-09-04 | 西南交通大学 | Wireless surface acoustic wave temperature measurement system reader-writer |
| CN103678251A (en) * | 2013-11-30 | 2014-03-26 | 成都天志大行信息科技有限公司 | Automatic information management system |
| CN103793724A (en) * | 2012-10-30 | 2014-05-14 | 上海阿法迪智能标签系统技术有限公司 | Expansion adapter of high frequency RFID reader-writer |
| CN103793726A (en) * | 2012-10-30 | 2014-05-14 | 上海阿法迪智能标签系统技术有限公司 | Expansion adapter for ultrahigh-frequency FRID reader-writer |
| CN104573773A (en) * | 2015-02-09 | 2015-04-29 | 四川量迅科技有限公司 | Smart card reading and writing method |
| CN106557719A (en) * | 2016-12-07 | 2017-04-05 | 天津洽克印科技发展有限公司 | Control hyperfrequency equipment modulation circuit |
| CN107704909A (en) * | 2017-10-31 | 2018-02-16 | 公安部第三研究所 | The high-power read write line of high frequency multi-protocols for radio frequency identification |
| CN110492951A (en) * | 2019-08-02 | 2019-11-22 | Oppo（重庆）智能科技有限公司 | A kind of RF FEEDBACK detection circuit, antenna module and electronic equipment |
| CN114492485A (en) * | 2021-12-14 | 2022-05-13 | 成都普什信息自动化有限公司 | Multi-protocol reading system, method and terminal of high-frequency high-speed reader-writer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2847383Y (en) * | 2005-10-19 | 2006-12-13 | 上海阿法迪智能标签系统技术有限公司 | Micro radio frequency identifying multiple protocol read-and-write device |
| CN1767532A (en) * | 2005-11-29 | 2006-05-03 | 大连维深自动识别技术有限公司 | Open type super high frequency RF recognition protocol platform |
| CN1834981A (en) * | 2006-02-24 | 2006-09-20 | 上海坤源信息科技有限公司 | Modular type UHF reading writer |
-
2007
- 2007-05-08 CN CN200710107137A patent/CN101303736B/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923654B (en) * | 2009-06-09 | 2012-10-17 | 上海坤锐电子科技有限公司 | Ultrahigh frequency reader-writer suitable for remote security control by different users |
| CN102129579A (en) * | 2010-08-25 | 2011-07-20 | 成都西谷曙光数字技术有限公司 | System and method for improving reading-writing mode of ISO-18000-7 international standard label |
| CN102129579B (en) * | 2010-08-25 | 2013-05-01 | 成都西谷曙光数字技术有限公司 | System and method for improving reading-writing mode of ISO-18000-7 international standard label |
| CN102609738A (en) * | 2011-01-25 | 2012-07-25 | 上海互惠信息技术有限公司 | RFID (radio frequency identification device) multi-antenna reader-writer |
| CN103106415A (en) * | 2011-11-09 | 2013-05-15 | 上海宝信软件股份有限公司 | Intelligent radio frequency identification (RFID) reader used for rapid positioning of annular track conveying vehicle |
| CN102545952B (en) * | 2012-01-20 | 2014-04-09 | 昆山创通微电子有限公司 | Wireless transceiver |
| CN102545952A (en) * | 2012-01-20 | 2012-07-04 | 昆山创通微电子有限公司 | Wireless transceiver |
| CN102663458B (en) * | 2012-03-16 | 2015-03-25 | 江苏瑞福智能科技有限公司 | Multi-core UHF RFID reader-writer realized by application software |
| CN102663458A (en) * | 2012-03-16 | 2012-09-12 | 江苏瑞福智能科技有限公司 | Multi-core UHF RFID reader-writer realized by application software |
| CN102646205B (en) * | 2012-03-20 | 2015-08-12 | 中兴通讯股份有限公司 | A kind of reader drive unit, method and reader control system |
| CN102646205A (en) * | 2012-03-20 | 2012-08-22 | 中兴通讯股份有限公司 | Reader driving device, method and reader control system |
| CN103793724A (en) * | 2012-10-30 | 2014-05-14 | 上海阿法迪智能标签系统技术有限公司 | Expansion adapter of high frequency RFID reader-writer |
| CN103793726A (en) * | 2012-10-30 | 2014-05-14 | 上海阿法迪智能标签系统技术有限公司 | Expansion adapter for ultrahigh-frequency FRID reader-writer |
| CN103279777A (en) * | 2013-05-06 | 2013-09-04 | 西南交通大学 | Wireless surface acoustic wave temperature measurement system reader-writer |
| CN103678251A (en) * | 2013-11-30 | 2014-03-26 | 成都天志大行信息科技有限公司 | Automatic information management system |
| CN104573773A (en) * | 2015-02-09 | 2015-04-29 | 四川量迅科技有限公司 | Smart card reading and writing method |
| CN104573773B (en) * | 2015-02-09 | 2017-09-29 | 四川量迅科技有限公司 | A kind of smart card reader method |
| CN106557719A (en) * | 2016-12-07 | 2017-04-05 | 天津洽克印科技发展有限公司 | Control hyperfrequency equipment modulation circuit |
| CN107704909A (en) * | 2017-10-31 | 2018-02-16 | 公安部第三研究所 | The high-power read write line of high frequency multi-protocols for radio frequency identification |
| CN107704909B (en) * | 2017-10-31 | 2021-12-28 | 公安部第三研究所 | High-frequency multi-protocol high-power reader-writer for radio frequency identification |
| CN110492951A (en) * | 2019-08-02 | 2019-11-22 | Oppo（重庆）智能科技有限公司 | A kind of RF FEEDBACK detection circuit, antenna module and electronic equipment |
| CN110492951B (en) * | 2019-08-02 | 2021-11-09 | Oppo（重庆）智能科技有限公司 | Radio frequency feedback detection circuit, antenna assembly and electronic equipment |
| CN114492485A (en) * | 2021-12-14 | 2022-05-13 | 成都普什信息自动化有限公司 | Multi-protocol reading system, method and terminal of high-frequency high-speed reader-writer |
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| CN101303736B (en) | 2012-09-19 |
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