CN102622571A - Improved ultrahigh frequency radio frequency identification (RFID) reader - Google Patents
Improved ultrahigh frequency radio frequency identification (RFID) reader Download PDFInfo
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- CN102622571A CN102622571A CN2012100427582A CN201210042758A CN102622571A CN 102622571 A CN102622571 A CN 102622571A CN 2012100427582 A CN2012100427582 A CN 2012100427582A CN 201210042758 A CN201210042758 A CN 201210042758A CN 102622571 A CN102622571 A CN 102622571A
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Abstract
The invention relates to the technical field of radio frequency identification, in particular to a novel ultrahigh frequency radio frequency identification (RFID) reader, which comprises a card reader box body and a card reading chip arranged in the box body, wherein a circuit is connected with a signal terminal insert of a main machine, an antenna and an intelligent card fiber optic modem (FOM). The improved ultrahigh frequency RFID reader is characterized in that 32nd to 39th ends on a single chip microcomputer AT89S52 are connected with 13th to 20th ends on a card reading chip FOM D500 so that the card reader forms an independent reading-writing gate. By multiplexing a connection mode of an address bus, a 10th end and an 11th end on the single chip microcomputer AT89S52 are respectively connected with a 9th end and a 10th end on a serial port communication module recommend standard (RS) 232, and a 7th end and an 8th end on the serial port communication module recommend standard (RS) 232 are respectively connected with 2nd ends and 3rd ends on several labels to form a pair of input-output ends to achieve conversion between time to live (TTL) level and estimated time of arrival (ETA) level. The improved ultrahigh frequency RFID reader has a flexible interrupt handling function, operation distance of the reader can reach 5 m, and therefore operation is more convenient. The FOM intelligent card has an anti-collision mechanism and is stable and reliable. The data retention period of the FOM intelligent card is as long as 10 years, the data can be rewritten for 100,000 times, the card is not limited in times in reading, and requirement for high data storage amount in the existing market is met.
Description
[technical field]
The present invention relates to the radio RF recognition technology field, main relevant a kind of novel ultrahigh frequency RFID reader.
[background technology]
REID (Radio Frequency Identification; Abbreviation RFID); Be a kind of automatic identification technology that begins to rise the nineties in 20th century, REID is the technology that the information utilizing radiofrequency signal to pass through space coupling (alternating magnetic field or electromagnetic field) the contactless information transmission of realization and pass through to be transmitted reaches identifying purpose.REID is a kind of contactless automatic identification technology, and RF tag mainly is divided into two kinds of forms of passive label and active label as the part of REID.After label gets into magnetic field; Receive the radiofrequency signal that plug-in reader sends, rely on the energy that induction current obtained to send out the product information (Passive Tag, passive label or passive label) that is stored in the chip; Perhaps initiatively send signal (the Active Tag of a certain frequency by label; Active label or active tag), after plug-in reader reads information and decoding, deliver to CIS and carry out the relevant data processing.The complete rfid system of one cover; Partly form by reader (Reader) and just so-called transponder of electronic tag (TAG) (Transponder) and three of application software systems; Its principle of work is that the radio wave energy that Reader launches a CF is given Transponder; In order to drive the Transponder circuit data of inside are seen off, this moment, Reader just received unscrambling data in regular turn, gave application program and did corresponding processing.Reader according to the structure of using with technological different can be to read or read/write device, be rfid system information Control and processing enter.Reader is made up of coupling module, transceiver module, control module and interface unit usually.The general half-duplex operation mode that adopts is carried out message exchange between reader and the transponder, and reader provides energy and sequential through coupling to passive balise simultaneously.In practical application, can further realize management functions such as collection, processing and teletransmission to object identification information through Ethernet or WLAN etc.Transponder is the information carrier of rfid system, and transponder is formed parasitic element by coupling original paper (coil, microstrip antenna etc.) and microchip mostly at present.At present, radio-frequency technique has been widely used in management and the application on the supply chain, the management of production line automation and application; The management and the application of aviation parcel, the management of container and application, the management and the application of railway parcel; The aspects such as application of logistics management system, market outlook are considerable.But still there are many defectives in the RFID reader of the prior art; Secondly for example the operating distance of induction is limited, can't be at scope internal induction far away to label; Pot-life of data and can revise number of times and also can't satisfy due requirement; In addition, smart card system is also stable inadequately, breaks down easily.
[summary of the invention]
The objective of the invention is to solve the deficiency of prior art, a kind of ultrahigh frequency RFID reader of novel structure is provided, the memory data output of this ultrahigh frequency RFID reader is big, and operating distance is far away, and is reliable and stable.
To achieve these goals; Design a kind of improved superelevation type RFID reader at present, comprise being provided with the Card Reader chip in card reader box body and the box body, circuit connects signal terminal plug-in unit and the antenna and the smart card FOM of main frame; It is characterized in that card reader connects the 13-20 end on the Card Reader chip FOM D500 by the end of the 32-39 on the single chip computer AT 89S52; Constitute independent reading and writing gating, the connected mode of multiplexed address bus, 10 of single chip computer AT 89S52 is connected 9 and 10 ends on the serial communication modular RS232 respectively with 11 ends; On the serial communication modular RS232 7 is connected 2 and 3 ends on several labels respectively with 8 ends, constitutes the conversion that a pair of input and output realize TTL and ETA level.
Described FOM D500 Card Reader working frequency of chip is provided with 8 bit parallel interfaces in 902MHz to 928MHz scope, operating distance is in the 5m.
Described AT89S52 single-chip microcomputer be the 8K byte at system programmable flash storer, RAM memory capacity is 256 bytes, described AT89S52 single-chip microcomputer is provided with 3 16 bit timing devices, 14 house dogs in the sheet can be realized 1000 times erasable.
Described FOM smart card non-transformer carries antenna, and frequency of operation is in 902MHz to 928MHz scope, and traffic rate is 106kbps; Reading/writing distance is in 5m, and frequency of operation is in 902MHz to 928MHz scope, and the EEPROM EEPROM of FOM smart card is the 8K position; Be divided into 16 sectors, each sector is 4, every 16 bytes; With the piece is access unit, and there are independently one group of password and access control in each sector, also is provided with anti-collision mechanism in the described FOM smart card.
The piece 0 of each sector of the storage organization of described FOM smart card, piece 1, piece 2 are data block, can be used for stored data, and piece 3 is a controll block, comprise password A and access control and password B.
The data memory format of described FOM smart card is divided into general data and Value Data, and general data can be carried out the reading and writing operation; Value Data can carry out initialization value, the value of reading, increment, depreciation operation.
The present invention compares with prior art, has Interrupt Process more flexibly, and its operating distance can reach 5m, and is more convenient; FOM smart card of the present invention is provided with anti-collision mechanism, and it is more reliable and stable to compare prior art, is difficult for breaking down; And the data retention period of FOM smart card reaches 10 years; Can rewrite 100,000 times, read unlimitedly, satisfy the requirement of high memory data output in the existing market.
[description of drawings]
Fig. 1 is that radio-frequency recognition system is formed synoptic diagram;
Fig. 2 is a radio-frequency recognition system workflow synoptic diagram;
Fig. 3 is a microprocessor control module circuit diagram of the present invention;
Fig. 4 is a serial communication modular circuit diagram of the present invention;
Fig. 5 is a FOM storage organization synoptic diagram of the present invention;
Fig. 6 is a FOM data memory format synoptic diagram of the present invention;
Fig. 7 is a FOM workflow diagram of the present invention;
Fig. 8 (a) is to the insensitive synoptic diagram of mistake in the FOM anti-collision mechanism of the present invention;
Fig. 8 (b) is to wrong responsive synoptic diagram in the FOM anti-collision mechanism of the present invention;
Fig. 9 is the control mode synoptic diagram of the present invention for FOM D500;
Figure 10 (a) is a host computer procedure full speed mode of operation sectional drawing of the present invention;
Figure 10 (b) is a host computer procedure single step run pattern sectional drawing of the present invention;
Specifying Fig. 7 is Figure of abstract of the present invention.
[embodiment]
Below in conjunction with accompanying drawing the present invention is described further, the structure of this device and principle are very clearly concerning this professional people.
1. hardware designs
Shown in accompanying drawing 3; Card reader connects the 13-20 end on the Card Reader chip FOMD500 by the end of the 32-39 on the single chip computer AT 89S52, constitutes independent reading and writing gating, the connected mode of multiplexed address bus; Shown in accompanying drawing 4; 10 of single chip computer AT 89S52 is connected 9 and 10 ends on the serial communication modular RS232 respectively with 11 ends, and 7 on the serial communication modular RS232 is connected 2 and 3 ends on several labels respectively with 8 ends, constitutes the conversion that a pair of input and output realize TTL and ETA level.
FOM D500 Card Reader chip operation is provided with 8 bit parallel interfaces in 902MHz to 928MHz, and operating distance can reach 5m.
The AT89S52 single-chip microcomputer be the 8K byte at system programmable flash storer, RAM memory capacity is 256 bytes, described AT89S52 single-chip microcomputer is provided with 3 16 bit timing devices, 14 house dogs in the sheet can be realized 1000 times erasable.
2.FOM smart card
The frequency of operation of FOM smart card is in 902MHz to 928MHz scope, and the EEPROM EEPROM of FOM smart card is the 8K position, is divided into 16 sectors; Each sector is 4; Every 16 bytes are access unit with the piece, and there are independently one group of password and access control in each sector; As shown in Figure 8, also be provided with anti-collision mechanism in the described FOM smart card.
Shown in accompanying drawing 5, the piece 0 of each sector of the storage organization of FOM smart card, piece 1, piece 2 are data block, can be used for stored data, and piece 3 is a controll block, comprises password A and access control and password B.
Shown in accompanying drawing 6, the data memory format of FOM smart card is divided into general data and Value Data, and general data can be carried out the reading and writing operation; Value Data can carry out initialization value, the value of reading, increment, depreciation operation.
Shown in accompanying drawing 7, the workflow of FOM is: acknowledges requests → anti-collision mechanism → selection card → triple checking → read-write operations.
3. software design
The use of 3 timers
-T0 working method 1, the cycle " is fed dog ";
-T1 working method 1 is for serial ports produces baud rate;
-T2 working method: 16 heavy duties automatically, as time-delay and timing.
Host computer procedure
-employing JAVA language;
-platform is SuSE Linux 10.2;
-database is MySQL 5.0.45, the JDBC accessing database;
-serial ports expansion API---javax.comm.
5 classes of host computer procedure
-JDBCConnectionFactory: provide to connect database and unified two static methods of closing resource;
-Panel: be responsible for drawing;
-Mysql: mutual with database, read and Update Information;
-Serial: search for and open serial ports, the write method to serial ports is provided.
The Main class
-realize the ActionListener interface, the button on the graphical interfaces is reacted;
-realize the SerialPortEventListener interface, through listening mode from the serial ports read data.
Shown in accompanying drawing 10, Figure 10 is a host computer procedure sectional drawing of the present invention, and wherein Figure 10 (a) is a full speed mode of operation, and swiping the card is display message, deducts 1 yuan.
Claims (6)
1. improved superelevation type RFID reader; Comprise and be provided with the Card Reader chip in card reader box body and the box body; Circuit connects signal terminal plug-in unit and the antenna and the smart card FOM of main frame, it is characterized in that card reader connects the 13-20 end on the Card Reader chip FOM D500 by the end of the 32-39 on the single chip computer AT 89S52, constitutes independent reading and writing gating; The connected mode of multiplexed address bus; 10 of single chip computer AT 89S52 is connected 9 and 10 ends on the serial communication modular RS232 respectively with 11 ends, and 7 on the serial communication modular RS232 is connected 2 and 3 ends on several labels respectively with 8 ends, constitutes the conversion that a pair of input and output realize TTL and ETA level.
2. a kind of improved superelevation type RFID reader as claimed in claim 1 is characterized in that described FOMD500 Card Reader working frequency of chip in 902MHz to 928MHz scope, is provided with 8 bit parallel interfaces, and operating distance is in the 5m.
3. a kind of improved superelevation type RFID reader as claimed in claim 1; It is characterized in that described AT89S52 single-chip microcomputer is that the 8K byte is at system programmable flash storer; RAM memory capacity is 256 bytes; Described AT89S52 single-chip microcomputer is provided with 3 16 bit timing devices, and 14 house dogs in the sheet can be realized 1000 times erasable.
4. a kind of improved superelevation type RFID reader as claimed in claim 1 is characterized in that described FOM smart card non-transformer, carries antenna; Frequency of operation is in 902MHz to 928MHz scope, and traffic rate is 106kbps, and reading/writing distance is in 5m; The EEPROM EEPROM of FOM smart card is the 8K position, is divided into 16 sectors, and each sector is 4; Every 16 bytes; With the piece is access unit, and there are independently one group of password and access control in each sector, also is provided with anti-collision mechanism in the described FOM smart card.
5. like claim 1 or the described FOM smart card of claim 4; The piece 0, piece 1, piece 2 of each sector that it is characterized in that the storage organization of described FOM smart card is data block; Can be used for stored data, piece 3 is a controll block, comprises password A and access control and password B.
6. like claim 1 or claim 4 or the described FOM smart card of claim 5, it is characterized in that the data memory format of described FOM smart card is divided into general data and Value Data, general data can be carried out the reading and writing operation; Value Data can carry out initialization value, the value of reading, increment, depreciation operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100427582A CN102622571A (en) | 2012-02-23 | 2012-02-23 | Improved ultrahigh frequency radio frequency identification (RFID) reader |
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| CN2012100427582A CN102622571A (en) | 2012-02-23 | 2012-02-23 | Improved ultrahigh frequency radio frequency identification (RFID) reader |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104252639A (en) * | 2013-06-26 | 2014-12-31 | 成都新方洲信息技术有限公司 | RFID-based tag control processor |
| CN109525287A (en) * | 2018-12-06 | 2019-03-26 | 佳讯飞鸿（北京）智能科技研究院有限公司 | A kind of track ground transponder device, to maintain equipment and its maintaining method |
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| CN101763496A (en) * | 2008-12-24 | 2010-06-30 | 国民技术股份有限公司 | Radio-frequency card reader for mobile communication terminal |
| CN201853220U (en) * | 2010-08-25 | 2011-06-01 | 东莞市凌康信息技术有限公司 | RFID (radio frequency identification) reader with ultra capacity and ultrahigh frequency |
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- 2012-02-23 CN CN2012100427582A patent/CN102622571A/en active Pending
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| US20100123547A1 (en) * | 2008-11-19 | 2010-05-20 | Greatbatch Ltd. | Rfid detection and identification system including an rfid reader having a limited transmit time and a time-out period to protect a medical device against rfid-associated electromagnetic interference |
| CN101763496A (en) * | 2008-12-24 | 2010-06-30 | 国民技术股份有限公司 | Radio-frequency card reader for mobile communication terminal |
| CN201853220U (en) * | 2010-08-25 | 2011-06-01 | 东莞市凌康信息技术有限公司 | RFID (radio frequency identification) reader with ultra capacity and ultrahigh frequency |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104252639A (en) * | 2013-06-26 | 2014-12-31 | 成都新方洲信息技术有限公司 | RFID-based tag control processor |
| CN109525287A (en) * | 2018-12-06 | 2019-03-26 | 佳讯飞鸿（北京）智能科技研究院有限公司 | A kind of track ground transponder device, to maintain equipment and its maintaining method |
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