CN101038631A - Embedded RFID card identification portable device and identification method - Google Patents
Embedded RFID card identification portable device and identification method Download PDFInfo
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- CN101038631A CN101038631A CN 200710017710 CN200710017710A CN101038631A CN 101038631 A CN101038631 A CN 101038631A CN 200710017710 CN200710017710 CN 200710017710 CN 200710017710 A CN200710017710 A CN 200710017710A CN 101038631 A CN101038631 A CN 101038631A
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Abstract
The invention discloses a recognition device for the RFID card of the high radio frequency card, which combines a reader-writer and an embedded system together, wherein the embedded system comprises an ARM9 module having a net opening FTP, a SD card, a USB interface, a USB 2.0 downloading interface, and a touch screen, the reader writer consists of an antenna built in Mifare reading-writing module, a RS232 communication indication circuit and a power supply. The antenna built-in Mifare reading-writing module is biconnected with the ARM9 module by a RS232 interface, when the touch screen sends the reading or writing command to the ARM 9 module, the ARM 9 module transmits the command to the antenna built-in Mifarer reading writing module by the RS232 interface for encoding, then the encoded encoding or writing command is transmitted to the RFID card, the processed information is fed back to the antenna built-in Mifare reading-writing module for detection, demodulation and decoding, then the information is transmitted to the ARM9 module, and displayed on the touch screen. The invention can be applied to the RFID network management, charging of the entrance, meal, book and network, and the data management of U-disk or mobile hard disk.
Description
Technical field
The invention belongs to electronic device, the recognition device that particularly relates to a kind of high-frequency radio frequency card rfid card, be used for radio frequency discrimination RFID network management and gate inhibition, sell meal, taking care of books, Internet bar's charge, and the data management occasion of USB flash disk or portable hard drive is to the scene identification of rfid card.
Background technology
Along with development of electronic technology, the generation of various releases with use more and more widely for example IC-card, rfid card.IC-card is a kind of magnetic card of contact, owing to need user's plug-in card could discern the identity and the relevant information of this card in use, so produced wearing and tearing and inconvenient problem with use; Secondly, owing in retail trade, adopt bar-code identification, though and this Bar Code is a ripe relatively and identity recognizing technology early, received by people already, problems such as its confidentiality, many bar-code identification, remote identification are difficult to overcome technically.Produced rfid card again for this reason, rfid card is the abbreviation of Radio Frequency Identification, it is the card that carries out the information carrier of radio-frequency (RF) identification, this card is by the automatic recognition objective object of radiofrequency signal and obtain related data, be a kind of touchless automatic identification, need not manual intervention, can work in various rugged surroundings.At present, rfid card railway, traffic, finance, gate inhibition, sell occasions such as meal, taking care of books, network tolling, parking, military materials management, retail trade, the 2008 Beijing Olympic Games and begin or prepare to use.
Rfid card is according to the needs of application scenario, is divided at a distance and closely discerns two kinds of forms.The distance that remote identification refers to read and write rfid card is more than one meter, and closely to refer to read and write the distance of rfid card be in one meter in identification.Rfid card adopts ultrahigh frequency or low frequency frequency range at a distance, and in-plant rfid card adopts high frequency or low frequency frequency range.Therefore the RFID technology is divided into low frequency, high frequency and three frequency ranges of ultrahigh frequency in frequency domain, and these frequency ranges are applied to different occasions respectively.It is high band that current proximity identification is used more, particularly in the 13.56MHz frequency range, since have cheap, human body is not had characteristics such as injury, information transmission are fast, so be widely used in application scenario closely, as the gate inhibition, sell meal, I.D. is false proof, student's identity card is false proof, taking care of books, pay-to-driver bus such as charge, can melt at the field, but the result shows, uses at the RFID of 13.56MHz frequency range, has following defective:
(1) integrated level is lower, function singleness.Mainly show as single functions of modules: as the Mifare module for reading and writing ZLG500B that Philips company in Philip produces, only have the function of read-write rfid card, can't show read-write result and its work of control; Embedded-type ARM 9 modules that Samsung produces only are the effects of finishing microminiaturized computer, combine with concrete controlling object and produce the function of needs, and various interface own need be carried out program development.
(2) carry and safeguard inconvenience.Produce at present the producer of rfid interrogator, the FID electronic tag CF reading card of producing as Guangdong strength Xiang gold card company can only keyboard operation, though be easy to carry, is not easy to maintenance; The mountain is in using the button handheld RFID, and not only operation is inconvenient, and can not carry out multi-usage to the scene and safeguard, can only read and write rfid card, can not carry out various debugging needs such as network interface FTP, USB interface, SD card.
(3) use literal single.The touch-screen of present embedded Control only shows the Chinese character platform of English or special exploitation, not with English-Chinese combination, more be not fit to the touch operation RFID product of multilingual and literal, therefore the occasion for the present Chinese and English married operation in China's Mainland is not suitable for.
The content of invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, provide a kind of embedded RFID card identification portable unit and recognition methods, to be implemented in of the identification and the maintenance of multiple scene to rfid card.
The object of the present invention is achieved like this:
Embedded RFID card identification portable unit of the present invention is that read write line and embedded system are combined into one, wherein embedded system comprises ARM9 module and touch-screen, the ARM9 module is respectively equipped with network interface FTP, SD card, USB interface, USB2.0 download interface, and touch-screen is connected with the ARM9 module is two-way; Read write line comprises Mifare module for reading and writing, RS232 communication indicating circuit and the power supply of built-in aerial, and this power supply is connected with the Mifare module for reading and writing of built-in aerial by power supply reversal connection warning circuit; Be connected by the RS232 interface is two-way between the Mifare module for reading and writing of this built-in aerial and the ARM9 module; Touch-screen sends the instruction that reads or writes for the ARM9 module, the ARM9 module should be instructed through behind the communication code, the Mifare module for reading and writing that sends to built-in aerial by the RS232 interface carries out protocol code again, and send to built-in aerial, the instruction that reads or writes after built-in aerial will be encoded sends to the rfid card execution, the Mifare module for reading and writing that information after rfid card will be carried out returns to built-in aerial carries out detection, demodulation sign indicating number, pass to the ARM9 module by the RS232 interface again, on touch-screen, show, finish the read or write of rfid card identification.
Above-mentioned rfid card identification portable unit wherein is solidified with the transmit operation instruction of control RS232 interface and transmits the program of identification rfid card information in the ARM9 module, with the read-write capability of the Mifare module for reading and writing of finishing built-in aerial with to the maintenance function of rfid card.
Above-mentioned rfid card is discerned portable unit, wherein also is solidified with the control program of each interface in the ARM9 module, communicates by letter with RS232 to realize network interface FTP, SD card, USB interface respectively.
Above-mentioned rfid card identification portable unit, wherein be solidified with Chinese character table library file and Chinese character and English program of mixing in the ARM9 module, and the Chinese character input is set to a selection function, the input Pinyin method gets final product automatic Chinese character retrieval when needs input Chinese character, when input is English, stop Chinese character index automatically.
Above-mentioned rfid card identification portable unit; wherein the power supply reverse connection protection warning circuit is made up of diode D1, resistance R 1 and hummer P; this diode D1 oppositely connects; resistance R 1 is connected in series as current-limiting resistance with diode D1; the end of hummer P is connected with resistance R 1; form warning circuit, the protection read write line can not burn out because of error-polarity connection of power supply.
Utilize apparatus of the present invention to read and write the method for identification, comprise as the down active mode step:
The first step: the user sends at touch-screen and reads or writes instruction to the ARM9 module;
Second step: the ARM9 module communicates the Mifare module for reading and writing that sends to built-in aerial behind the coding to reading or writing instruction;
The 3rd step: the Mifare module for reading and writing of built-in aerial sends command information to the self built antenna by protocol code, and this built-in aerial sends to rfid card with protocol code information;
The 4th step: after rfid card is carried out read write command, the coded message of self is carried out detection, the processing of demodulation sign indicating number by the Mifare module for reading and writing that built-in aerial returns to built-in aerial, and the numerical information result after will handling sends to the ARM9 module;
The 5th step: the ARM9 module sends to screen displaying after the described information that sends is carried out, misinterpretation handled.
The method of utilizing apparatus of the present invention to read to discern also can comprise following passive type step:
The first step: the user sends at touch-screen and reads instruction to the ARM9 module;
Second step: the ARM9 module is to the into communication code that reads instruction, and reading instruction after will encoding sends to the Mifare module for reading and writing of built-in aerial;
The 3rd step: the Mifare module for reading and writing of built-in aerial sends to the self built antenna by protocol code with the described information of reading instruction, and by this built-in aerial protocol code information is sent to rfid card;
The 4th step: after rfid card was carried out and to be read instruction, the Mifare module for reading and writing that self coded message is returned to described built-in aerial again carried out detection, the demodulation sign indicating number is handled, and the numerical information result after will handling sends to the ARM9 module;
The 5th step: the ARM9 module sends to screen displaying after the numerical information that sends is carried out, misinterpretation handled.
The present invention has following advantage:
(1) owing in embedded system, be solidified with reading and writing control software, can finish control function, thereby make things convenient for the user to select suitable working method according to field condition to read write line;
(2) owing in embedded system, be solidified with interface function software, as: USB interface, SD card, network interface FTP, RS232 interface, can user friendlyly freely select, thereby realize the multi-functional purposes of multiple interfaces, as take the disk database way to manage of USB interface or SD card, rfid card to the scene is tested, and whether card authentication lost efficacy.
(3) owing in embedded system, be solidified with Chinese character and Chinese character input control program, can finish the mixing input function of Chinese character input and Chinese and English;
(4) in having increased the error-polarity connection of power supply warning circuit, can realize defencive function to the Mifare module for reading and writing of built-in aerial;
(5) because embedded system is combined with read write line, volume is little, in light weight, and is easy to carry, satisfies the go on business demand of debugging use of technician other places easily;
(6) owing to taked the two selections of putting power supply of AC and DC in the design, can select power supply flexibly according to the occasion of using;
(7) owing to take to read and write the active method and the passive type method of identification in the design, be convenient to finish the application of different occasions.
Description of drawings
Fig. 1 is an one-piece construction schematic diagram of the present invention
Fig. 2 is an Embedded System Structure schematic diagram of the present invention
Fig. 3 is the read write line structure principle chart
Fig. 4 is the present invention's process flow diagram that read-write is initiatively discerned to rfid card
Fig. 5 is that the present invention reads passive identification process figure to rfid card
Embodiment
Followingly the present invention is described in further detail with reference to accompanying drawing.
With reference to Fig. 1, the present invention is made up of embedded system and read write line two parts.
Described embedded system comprises ARM9 module 10, power supply 1 and touch-screen 9.This touch-screen is connected with the ARM9 module is two-way, and wherein the ARM9 module is selected 2410 chips that Samsung is produced for use, is respectively equipped with FTP network interface 6, SD card 3, USB interface 5, USB2.0 download interface 2 and speech input interface 4; Each interface all has control program separately, these control programs are cured in the ARM9 module, also be solidified with the program that control RS232 interface sends instruction and transmits rfid card information simultaneously in the ARM9 module, and Chinese character table library file and Chinese character and English program of mixing; Power supply 1 be by exchange 220 volts rectifications for+5V direct current or directly+input of 5V battery direct current, rectification is furnished with the rectifier terminal to alternating current 220V, the fuse and the hand switch that are connected in series 0.5A are again formed, should+input of 5V direct current is directly to the ARM9 module, as shown in Figure 2.
This touch-screen 9 sends the instruction that reads or writes and shows the rfid card identifying information in order to finish to ARM9 module 10; This ARM9 module is subjected to the control of RS232 interface routine, sends instruction and the rfid card identifying information after touch-screen transmits processing in order to finish to read write line; Power supply 1 provides+the 5V direct current to the ARM9 module.
Described read write line comprises that Mifare module for reading and writing 15, RS232 communication indicating circuit 14, power supply 11, power supply reversal connection warning circuit 12, the power supply of built-in aerial detect indicating circuit 13; This power supply 11 by three terminal regulator LM7805, external rectification input+7.5V ~+input of 12V direct current ,+input of 5V direct current, two fuse, hand switch K1, the capacitor C 1 of putting switch, 0.5A of K2 hilted broadsword form.Wherein three terminal regulator LM7805 provides dc voltage conversion, with the dc voltage stability output of input on+5V, should+the 5V direct current is for read write line work, directly+during the input of 5V direct current, commutate by K2.This power supply reverse connection protection warning circuit 12 is made up of diode D1, resistance R 1 and hummer P; wherein; diode D1 oppositely connects; resistance R 1 is connected in series as current-limiting resistance with diode D1; the end of hummer P is connected with resistance R 1; form warning circuit, the protection read write line can not burn out because of error-polarity connection of power supply.This power supply detects indicating circuit 13 to be made up of resistance R 2 and red led LED, when power supply just often, red led LED normally shows after resistance R 2 current limlitings, otherwise it is blown by electric current greatly or polarity connects on the contrary and do not work.This RS232 communication indicating circuit 14, transmitting-receiving line by green indicating lamp LED, current-limiting resistance R3, power amplifier tube T, RS232 is formed, the transmitting-receiving line signal controlling T power amplifier of RS232 is lighted to promote green indicating lamp LED, when glimmering, it shows that the RS232 interface communicates by letter, as shown in Figure 3.
Dedicated RF ID coding and decoding chip MFRC500 and printed antenna that the Mifare module for reading and writing 15 of this built-in aerial selects for use Philip Philips company to produce are formed, and finish functions such as power amplification, coding, decoding, RS232 communication.The Mifare module for reading and writing 15 of this built-in aerial be used to finish to rfid card energy is provided, carry out to rfid card read or write and to the order number that reads or writes of rfid card, and the modulated wave that the rfid card after reading or writing of rfid card finished returns carries out detection and demodulation, after the demodulating information that obtains is decoded, send back ARM9 module 10 by the RS232 interface again.This RS232 communication indicating circuit 14 is in order to finish the monitoring indication of ARM9 module 10 with Mifare module for reading and writing 15 communications status of built-in aerial.This power supply 11 provides for the Mifare module for reading and writing 15 of built-in aerial by power supply reversal connection warning circuit 12.This power supply reversal connection warning circuit 12 is finished the polarity monitoring, alarming to power supply 11, and the protective effect during to the reversal connection electric power polarity.This power supply monitoring indicating circuit 13 finish to the Mifare module for reading and writing 15 of built-in aerial+whether 5 volts of power supplys normally indicate.
Being connected between described read write line and the embedded system is to be undertaken by the Mifare module for reading and writing of read write line built-in aerial and the ARM9 module in the embedded system, promptly be connected with the ARM9 module is two-way, satisfy the requirement of remote data transmission by the Mifare module for reading and writing of RS232 interface 8 with built-in aerial.
The method of utilizing apparatus of the present invention that rfid card is discerned is divided into initiatively and passive dual mode.
With reference to Fig. 4, utilize apparatus of the present invention that rfid card is carried out the initiatively method of read-write identification, carry out according to the following procedure:
The first step: the user sends at touch-screen and reads or writes instruction, promptly clicks the instruction that reads or writes in the control program of reading and writing rfid card, can select the rfid card corresponding data block simultaneously, finishes reading or writing specified data block with expectation; If being carried out read operation, the rfid card specified data block directly clicks read command, if the rfid card specified data block is carried out write operation, in prompting frame, import the Chinese and English character that need write in the rfid card and be no more than 16 bytes earlier, wherein one of Chinese character takies two bytes, clicks write order again;
Second step: the ARM9 module is advanced communication code to reading or writing instruction, be that the application software that the ARM9 Development of Module is come out will read or write the code of order number for ease of the RS232 interface communication, reading instruction is encoded to hexadecimal AA, and it is hexadecimal 55 that write command is encoded to, and is convenient to distinguish order like this; Add parity check bit simultaneously, prevent that communication data from transmitting wrong the generation; Read or write after the command word specifying the data block of the rfid card of reading and writing, directly being added in; Write command is also added the Chinese and English character information that need write after number of data blocks, character of Chinese character wherein accounts for two bytes, and English and each character of arabic numeral only accounts for a byte;
The 3rd step: the ARM9 module detects the RS232 interface of self, prevents that the RS232 interface fault from causing the failure of read or write; The ARM9 module at first sends hexadecimal FF to the RS232 interface of self, receive the information that the RS232 interface returns then, if return hexadecimal 00, then the RS232 interface of ARM9 module is electrically connected normally, mistake occurs otherwise be electrically connected, need the user to be electrically connected inspection, the accordingly result prompting that the RS232 interface of this ARM9 module detects is on touch-screen, be convenient to the user and in time grasp situation, and make corresponding actions; When the RS232 of ARM9 module interface testing result just often, embedded system sends to the read write command that encodes the Mifare module for reading and writing of built-in aerial by the RS232 interface of ARM9 module;
The 4th step: after the Mifare module for reading and writing of built-in aerial received the instruction of ARM9 module, whether it is carried out parity checking correct, if correct, then instructs identification, i.e. identification reads or writes, and discern certain data block of rfid card is read or write; If check errors then returns to the error message of ARM9 module RS232 interface communication, be encoded to hexadecimally 0101, after the ARM9 module is discerned this error code by the RS232 interface, show that on touch-screen the RS232 interface transmits the wrong information of order; It is correct that the instruction that receives the ARM9 module when the Mifare of built-in aerial module for reading and writing is carried out parity checking to it, then discerning instruction that the ARM9 module sends reads or writes, and after certain data block of rfid card read or write, own coding decoding chip in the Mifare module for reading and writing of built-in aerial instructs according to WD ISO/IEC 14443 to this, type A international standard rfid card communication protocol coding, coded message is modulated on the carrier frequency of 13.56MHz, and sends to the built-in aerial of the Mifare module for reading and writing of built-in aerial;
The 5th step: the built-in aerial of the Mifare module for reading and writing of built-in aerial sends to rfid card in the mode that the near field, magnetic field is coupled by air interface with protocol code information;
The 6th step: rfid card receives the built-in aerial of the Mifare module for reading and writing of built-in aerial sends in the mode of near field, magnetic field coupling protocol code information by air interface electromagnetic field information, obtain reading or writing instruction and corresponding data block after the antenna reception of process self, detection, the demodulation, also will demodulate the character information that will write its data piece write command; Then rfid card is carried out and is read or write instruction, and self data designated piece content read or write after the data, according to WD ISO/IEC 14443, type A international standard rfid card communication protocol coded modulation returns to the built-in aerial of the Mifare module for reading and writing of built-in aerial on the carrier frequency of 13.56MHz;
The 7th step: the built-in aerial of the Mifare module for reading and writing of built-in aerial sends the information of the rfid card that receives to the own coding decoding chip in the Mifare module for reading and writing of built-in aerial, the information that rfid card returns is carried out detection, demodulation sign indicating number, obtain the numerical information of rfid card;
The 8th step: the Mifare module for reading and writing of built-in aerial sends to the ARM9 module with the numerical information of the rfid card that obtains by the RS232 interface;
The 9th step: the ARM9 module carries out the rfid card information that sends sending to touch-screen according to the Chinese and English character coded system and carrying out the Chinese and English demonstration after the Chinese and English analysis.
Whole device was in holding state after above-mentioned steps finished, and waited for next bar read or write of user, can save power supply.
With reference to Fig. 5, utilize apparatus of the present invention that rfid card is carried out the passive method of reading to discern, carry out according to the following procedure:
The first step: the user sends at touch-screen and reads instruction, be that the user starts the passive application program of reading to discern rfid card, after user's input need be specified the data block that reads to rfid card on the touch-screen, click reading order, the The whole control program changes over to always carries out in the process of read operation rfid card data designated piece, and the user does not need to import data block and the reading command that next time reads rfid card; That is to say that the user only need carry out single job to reading rfid card, the state that reads rfid card later on is performed always;
Second step: the ARM9 module is to the into communication code that reads instruction, and promptly the ARM9 Development of Module application software of coming out will read instruction and be encoded to the code of being convenient to the RS232 interface communication, and reading instruction is encoded to hexadecimal AA; Add parity check bit simultaneously, prevent that communication data from transmitting wrong the generation; The data block of the rfid card that appointment is read directly is added in after the read command word;
The 3rd step: the ARM9 module is to the Mifare module for reading and writing that reads instruction and send to built-in aerial after encoding, and promptly the ARM9 module detects the RS232 interface of self, prevents that the RS232 interface fault from causing the failure of read operation; The ARM9 module at first sends hexadecimal FF to the RS232 interface of self, receive the information that the RS232 interface returns then, if return hexadecimal 00, then the RS232 interface of ARM9 module is electrically connected normally, mistake occurs otherwise be electrically connected, need the user to be electrically connected inspection, the accordingly result prompting that the RS232 interface of this ARM9 module detects is on touch-screen, be convenient to the user and in time grasp situation, and make corresponding actions; When the RS232 of ARM9 module interface testing result just often, embedded system sends to the read command that encodes the Mifare module for reading and writing of built-in aerial by the RS232 interface of ARM9 module;
The 4th step: the Mifare module for reading and writing of built-in aerial sends by protocol code and reads instruction information to the self built antenna, be after the Mifare module for reading and writing of built-in aerial receives the instruction of ARM9 module, whether it is carried out parity checking correct, if it is correct, then instruct identification, i.e. identification reads or writes, and identification reads or writes certain data block of rfid card; If check errors then returns to the error message of ARM9 module RS232 interface communication, be encoded to hexadecimally 0101, after the ARM9 module is discerned this error code by the RS232 interface, show that on touch-screen the RS232 interface transmits the wrong information of order; It is correct that the instruction that receives the ARM9 module when the Mifare of built-in aerial module for reading and writing is carried out parity checking to it, then recognition instruction is to read or write, and after identification reads or writes certain data block of rfid card, own coding decoding chip in the Mifare module for reading and writing of built-in aerial instructs according to WD ISO/IEC 14443 to this, type A international standard rfid card communication protocol coding, coded message is modulated on the carrier frequency of 13.56MHz, and sends to the built-in aerial of the Mifare module for reading and writing of built-in aerial;
The 5th step: this built-in aerial sends to rfid card with protocol code information, and promptly the built-in aerial of the Mifare module for reading and writing of built-in aerial sends to rfid card in the mode that the near field, magnetic field is coupled by air interface with protocol code information;
The 6th step: after rfid card is carried out and read instruction, self information is returned to the built-in aerial of the Mifare module for reading and writing of built-in aerial, the built-in aerial that is the rfid card Mifare module for reading and writing that receives built-in aerial sends out electromagnetic field information in the mode of near field, magnetic field coupling by air interface with protocol code information, obtain reading or writing instruction and corresponding data block after the antenna reception of process self, detection, the demodulation, also will demodulate the character information that will write its data piece write command; Rfid card is then carried out and is read or write instruction, and self data designated piece content read or write after the data, with this numerical information according to WD ISO/IEC 14443, type A international standard rfid card communication protocol coded modulation returns to the built-in aerial of the Mifare module for reading and writing of built-in aerial on the carrier frequency of 13.56MHz;
The 7th step: this built-in aerial is handled the Mifare module for reading and writing that coded message sends built-in aerial to, be that built-in aerial in the Mifare module for reading and writing of built-in aerial sends the rfid card information that receives to the own coding decoding chip in the Mifare module for reading and writing of built-in aerial, the coded message that rfid card returns is carried out detection, demodulation sign indicating number, obtain the numerical information of rfid card;
The 8th step: the numerical information result after the Mifare module for reading and writing of built-in aerial will be handled sends to the ARM9 module, and promptly the Mifare module for reading and writing of built-in aerial sends to the ARM9 module with the numerical information of the rfid card that obtains by the RS232 interface;
The 9th step: after the information that the ARM9 module sends the Mifare module for reading and writing of built-in aerial carries out, misinterpretation handled, send to screen displaying, it is wrong or to relatively analyzing that to be the ARM9 module carry out numerical coding to the rfid card information that sends, if judged result is correct, then with analysis result again according to the different coding mode of Chinese and English, send to touch-screen and show the information that reads the specified data block rfid card; If the judged result mistake then is sent to error message touch-screen Chinese character mode and shows.
Whole device entered first step continuation circulation execution after above-mentioned steps finished, if device quits work after cutting off the power supply, the user does not need repetitive operation to read instruction, and reads instruction and can automatically perform.Similar to the write operation under the passive mode to the read operation under the passive mode, just in the first step, need to add the data content that will write in the specified data block.
Application example of the present invention:
Application example 1: apparatus of the present invention are applied to certain campus all-purpose card management test, the network interface of self is connected with the network interface of campus server, just can realize the terminal use of network management, finish comprehensive functions such as mess card is paid dues, gate inhibition, taking care of books.
Application example 2: apply the present invention to the quality testing of Mifare card, apparatus of the present invention are operated in the passive rfid card recognition method of reading, and the mode of employing streamline, the rfid card produced with travelling belt process from the read write line of apparatus of the present invention, just can be realized the quality quality of identification detection rfid card automatically.
Application example 3: apply the present invention to Internet bar's toll administration, with apparatus of the present invention work of starting shooting, at first go up the machine personnel when coming in rfid card machine time identification on apparatus of the present invention begin, this start time information is stored on the rfid card, simultaneously the interface USB of apparatus of the present invention exploitations is connected with extraneous USB flash disk or portable hard drive, perhaps the SD card connection in the SD card of apparatus of the present invention exploitation and the external world is registered ID number of rfid card automatically; After last machine personnel finish machine, rfid card is discerned by apparatus of the present invention once more, be exactly the last machine personnel's of mistiming of secondary identification the last machine time, total multiply by the last machine expense that the machine charge can obtain that goes up hourly again.
Application example 4: apply the present invention to gate inhibition's test, be about to apparatus of the present invention as server, network interface FTP is carried out the hub expansion, the read write line of apparatus of the present invention is installed on the doorway in each room, when using the rfid card of having registered, the guest just can enter the room, otherwise belong to illegal, thereby realize automatic gate inhibition's Network Management Function.
Application example 5: with applying RFID card reader maintenance of the present invention, be about to device of the present invention and serve as maintenance tool, use the read-write operation function of apparatus of the present invention, just can verify whether on-the-spot rfid card lost efficacy.If rfid card is normal, then can determine on-the-spot rfid interrogator fault, so in time fault location certainly.Simultaneously, when the technician had keeped in repair the read write line of rfid card at scene, apparatus of the present invention just can be served as the instrument that comparison checks and be used.
Application example 6: with a large amount of card sending mechanism of applying RFID card of the present invention, device of the present invention is operated under the environment of passive type write operation, the application of the similar example 2 of identical security information that needs are write, I.D. streamline from the read write line of the present invention is transmitted in the past, can finish the task of writing information.
Explanation of nouns
The Mifare module for reading and writing: refer to the Mifare model non-contact RF ID card that Philips company in Philip produces is satisfied ISO14443 Type A, ISO14443 Type B, ISO15693 carries out the circuit of read or write function.
ARM9 module: ARM is Adanced RISC Machines abbreviation, is a CompanyName, also is a kind of common name of processor, can also think a kind of technology name.The ARM9 module is represented the functional circuit that develops based on ARM the 9th generation microprocessor.
The RS232 interface is exactly a serial ports, have a lot of industrial instrumentations and computing machine with it as the standard traffic port.
Network interface FTP:FTP is File Transfer Protocol abbreviation, and the agreement that is used for transmitting file on Internet is a file transfer protocol (FTP).It is that the file of formulating in order to transmit file mutually on Internet transmits standard, has stipulated that Internet goes up file and how to transmit.
The SD card: being Secure Digital Memory Card abbreviation, is a kind of memory device of new generation of based semiconductor fast-flash memory device.The SD card is developed in August, 1999 jointly by PANASONIC, Toshiba and U.S. SanDisk company.Size is just as the SD memory card of a stamp, and weight has only 2 grams, but has high memory capacity, rapid data transmission rate, great mobile dirigibility and well security.
USB interface: USB is the abbreviation of English Universal Setial Bus, and Chinese implication is " USB (universal serial bus) ", and it is a kind of new interface technology that is applied in field of personal computers and industrial control field.Here refer to the USB1.1 interface, its transmission speed is 12Mbps.
USB2.0 download interface: be meant to unite and formulated the USB2.0 interface standard by this 7 tame manufacturer of COMPAQ, Hewlett Packard, Intel, Lucent, Microsoft, NEC and PHILIPS, USB2.0 has been increased to 480Mbps with data transfer between devices speed, refers to use specially the USB2.0 interface as the special interface that downloads here.
Claims (7)
1, a kind of embedded RFID card identification portable unit, comprise read write line, it is characterized in that read write line and embedded system are combined as a whole, this embedded system comprises ARM9 module (10) and touch-screen (9), and the ARM9 module is respectively equipped with network interface FTP (6), SD card (3), USB interface (5), USB2.0 download interface (2); Read write line comprises Mifare module for reading and writing (15), RS232 communication indicating circuit (14) and the power supply (11) of built-in aerial, and this power supply is connected with the Mifare module for reading and writing (15) of built-in aerial by power supply reversal connection warning circuit (12); Between the Mifare module for reading and writing (15) of this built-in aerial and the ARM9 module (10) by two-way connection of RS232 interface (8); Touch-screen (9) sends the instruction that reads or writes for ARM9 module (10), the ARM9 module will instruct the Mifare module for reading and writing (15) that sends to built-in aerial by the RS232 interface to encode, and send to built-in aerial, the instruction that reads or writes after built-in aerial will be encoded sends to the rfid card execution, the Mifare module for reading and writing (15) that information after carrying out is returned to built-in aerial carries out detection, demodulation sign indicating number, pass to ARM9 module (10) by the RS232 interface again, on touch-screen, show, finish read or write rfid card identification.
2, device according to claim 1 is characterized in that being solidified with in the ARM9 module control program of read and write, with the read-write capability of the Mifare module for reading and writing of finishing built-in aerial with to the maintenance function of high-frequency radio frequency identification rfid card.
3, device according to claim 1 and 2 is characterized in that also being solidified with in the ARM9 module control program of each interface, to realize network interface FTP, SD card, USB interface and RS232 interface communication respectively.
4, according to claim 1 or 3 described devices, it is characterized in that being solidified with in the ARM9 module Chinese character table library file and Chinese character and English program of mixing, input Pinyin gets final product automatic Chinese character retrieval when needs input Chinese character, when input is English, stops Chinese character index automatically.
5, device according to claim 1; the power supply reverse connection protection warning circuit (12) that it is characterized in that read write line is made up of diode D1, resistance R 1 and hummer P; this diode D1 oppositely connects; resistance R 1 is connected in series as current-limiting resistance with diode D1; the end of hummer P is connected with resistance R 1; form warning circuit, the protection read write line can not burn out because of error-polarity connection of power supply.
6, a kind of described device of claim 1 that utilizes is read and write the method for identification to rfid card, comprises as the down active mode step:
The first step: the user sends at touch-screen and reads or writes instruction to the ARM9 module;
Second step: the ARM9 module communicates the Mifare module for reading and writing that sends to built-in aerial behind the coding to reading or writing instruction;
The 3rd step: the Mifare module for reading and writing of built-in aerial sends command information to the self built antenna by protocol code, and this built-in aerial sends to rfid card with protocol code information;
The 4th step: after rfid card is carried out read write command, the coded message of self is carried out detection, the processing of demodulation sign indicating number by the Mifare module for reading and writing that built-in aerial returns to built-in aerial, and the numerical information result after will handling sends to the ARM9 module;
The 5th step: the ARM9 module sends to screen displaying after the described information that sends is carried out, misinterpretation handled.
7, a kind of method of utilizing the described device of claim 1 that rfid card is read to discern comprises following passive type step:
The first step: the user sends at touch-screen and reads instruction to the ARM9 module;
Second step: the ARM9 module is to the into communication code that reads instruction, and reading instruction after will encoding sends to the Mifare module for reading and writing of built-in aerial;
The 3rd step: the Mifare module for reading and writing of built-in aerial sends to the self built antenna by protocol code with the described information of reading instruction, and by this built-in aerial protocol code information is sent to rfid card;
The 4th step: after rfid card was carried out and to be read instruction, the Mifare module for reading and writing that self coded message is returned to described built-in aerial again carried out detection, the demodulation sign indicating number is handled, and the numerical information result after will handling sends to the ARM9 module;
The 5th step: the ARM9 module sends to screen displaying after the numerical information that sends is carried out, misinterpretation handled.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100177105A CN100524349C (en) | 2007-04-19 | 2007-04-19 | Embedded RFID card identification portable device and identification method |
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| CNB2007100177105A CN100524349C (en) | 2007-04-19 | 2007-04-19 | Embedded RFID card identification portable device and identification method |
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| CN101038631A true CN101038631A (en) | 2007-09-19 |
| CN100524349C CN100524349C (en) | 2009-08-05 |
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| CN101976324A (en) * | 2010-09-30 | 2011-02-16 | 福建新大陆电脑股份有限公司 | Radio frequency identification (RFID) reader, reading method and corresponding RFID reading system thereof |
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