CN101246557A - EPC enciphering code, RFID chip anti-collision method, structure and reader-writer and system - Google Patents
EPC enciphering code, RFID chip anti-collision method, structure and reader-writer and system Download PDFInfo
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- CN101246557A CN101246557A CNA2008100849268A CN200810084926A CN101246557A CN 101246557 A CN101246557 A CN 101246557A CN A2008100849268 A CNA2008100849268 A CN A2008100849268A CN 200810084926 A CN200810084926 A CN 200810084926A CN 101246557 A CN101246557 A CN 101246557A
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Abstract
The invention relates to a computer management system, particularly relates to an encoding method for an electronic code of an EPC production, and a method for pre-line code-times anti-collision of RFID chip, a chip structure, an antenna structure for acoustic surface wave delay ,a reader-writer function and an EPC computer management system. Encryption code is inserted into the electronic code of the EPC production, a delayer with a first delay line and a second delay line is used, a hardware control module which is instead of a read only chip of a microprocessor is processed for a RFID tag, and delay time is controlled. Both two ways achieve the method for initiative labeling, and pre-line code-times anti-collision of RFID chip. The reader-writer can input the amount of identified production, then transmit pass or alarm signal, avoid omission identification, set a database of the encryption EPC code. The EPC computer management system consisted by the tag and the reader-writer, and a server can improve security, decrease cost, easily popularize.
Description
Technical field:
The present invention relates to a kind of computer management system, be particularly related to a kind of EPC product electronic code encoding method, the RFID chip timesharing newspaper sign indicating number collision-proof method of lining up in advance, chip structure, saw delay antenna structure and read write line function and EPC computer management system.
Technical background:
The inventor is in " a kind of multiple validation-cross RFID composite label coding, manufacture method and system thereof " (application number: 200810000733.X) propose a kind of adapt to low-cost under China's area development pole unbalance condition, as to support the RFID composite label of multiple means of identification and environment-identification coding, manufacture method and system thereof of application on January 15th, 2008.Coding method is proposed a kind of scrambled method of joining day function, but do not relate to the scrambled method that other can reach same effect, designs simplification to the RFID chip that uses does not propose a solution, not under the situation of facilitating chip structure, the anticollision problem that how to solve chip identification proposes solution, thereby when adopting the RFID chip as multiple validation-cross RFID composite label, the label cost can not be reduced.Need to propose a kind of false proof dedicated RF ID chip anti-collision method of composite label coding, manufacture method and recognition system technical characterictic, the method for facilitating chip structure, RFID chip production and EPC identification operation management system that guarantees the read write line function improving method of complete identification and adapt to these variations of adapting to.
Summary of the invention:
In order to allow the RFID label technique generally apply at China's wide geographic area as early as possible, the spy proposes target of the present invention:
First purpose of the present invention is: a kind of EPC product electronic code scrambled method is provided.
Second purpose of the present invention is: a kind of RFID chip timesharing newspaper sign indicating number collision-proof method of lining up in advance is provided.
The 3rd purpose of the present invention is: a kind of RFID chip structure is provided.
The 4th purpose of the present invention is: a kind of anticollision label construction and collision-proof method of being made up of SAW (Surface Acoustic Wave) delay line antenna and read-only RFID chip is provided
The 5th purpose of the present invention is: a kind of anti-skip recognition methods of read write line of importing manifest data, statistics skip quantity is provided.
The 6th purpose of the present invention is: a kind of RFID chip production and EPC identification operation management system is provided.
The present invention's first purpose is achieved in that and it is characterized in that it may further comprise the steps:
1) in the EPC of standard product electronic code structure, that is: outside edition code, supvr's code, object type code, the sequence number, adds one group of accidental enciphering code.
2) the accidental enciphering code adds the implantation site in EPC product electronic code, before sequence number or after the sequence number.
3) after the EPC product electronic code that increases the accidental enciphering code generates or write after the chip memory, deposit database in.
4) after the EPC product electronic code that generates complete increase accidental enciphering code in chip manufacturing proces write in the chip memory, whole codes that must will write chip were imprinted CDs, and offer the label manufacturer with chip.
5) after the label manufacturer uses the chip production RFID label that writes the EPC product electronic code that increases the accidental enciphering code, must will write whole code CDs of chip, offer label order manufacturer with label.
6) the accidental enciphering code is non-coherent function of time code or the non-coherent code of natural number at random.
Its feature also in:
1) the accidental enciphering code restriction that the difference and the chip manufacture of safety requirements write code technology according to the client, adopt the function of time of different accuracy respectively, comprising: the function of time of the function of time, 100,000/second of the function of time, ten thousand/second that is accurate to the function of time, the signa of 1/10th seconds the function of time, centisecond.
2) the accidental enciphering code adopts the not natural number at random of isotopic number respectively according to the difference of client to safety requirements, comprising: 1 figure place, 2 figure places, 3 figure places, 4 figure places, 5 figure places, 6 figure places ... N-1 figure place, N position natural number; Sequence number figure place in N≤EPC product code.
3) label is ordered goods for discussing and is used read write line to read whole label E PC codes, deposits database in, or uses the CD of enclosing to deposit label E PC code in database.
The present invention's second purpose is achieved in that and it is characterized in that it may further comprise the steps:
1) in the RFID chip, adds first delay circuit and second delay circuit, after first delay circuit is set the RFID label and is entered read write line electromagnetism scope, send time delay of EPC code for the first time, second delay circuit set RFID label on the scene, second time and leave the theatre before time delay of circulation transmission EPC code.
2) after each RFID label enters read write line inquiry electromagnetism scope, obtains energy, before leaving the theatre, at times by first delay circuit and second delay circuit in the chip, according to predefined delay sequential, the EPC product electronic code data that have the accidental enciphering code of memory stores are reported and submitted in circulation.
3) after each chip is reported and submitted code data for the first time, control by the delayed mode logical circuit, according to pre-set time interval, report and submit for the second time code data, infinite circulation before not breaking away from read write line inquiry electromagnetic field scope, after breaking away from the electromagnetic field scope, the supply of chip degradedness, the delayed mode logical circuit is returned to initial time sequence status.
4) be pasted with receiving and the shipment link of RFID label commodity of the present invention, consignee or shipment provider, according to the described commodity sum of goods manifest, computer with total number of packages numerical value input read write line of commodity or read write line connection, read the whole EPC codes that meet the commodity total value fully in goods is in reading and writing device antenna electromagnetic signal coverage after, the computer that read write line or read write line connect sends all-clear; The total number of packages numerical value of commodity input mode comprises: total numerical value is input or the input of total numerical value bar code scan manually.
5) after read write line is failed to read the code number that conforms to the commodity total value of importing, commodity and has just been broken away from the reading and writing device antenna coverage, the computer that read write line or read write line connect sends alerting signal immediately, and shows the difference of actual read the code quantity and manifest quantity.
Its feature also in:
1) according to the minimum read or write speed of the supporting read write line of production chip to chip, determine the minimum interval value of chip delay circuits, that is: fixed delay time spacing value, the delay parameter of being scheduled to as first delay circuit.
2) the largest interval time value that queuing identification maximum quantity is required, adds up to according to the client that is: postpones threshold value, as the predetermined delay parameter of second delay circuit.
3) in predetermined delay threshold value span scope, according to fixed delay time at interval, predetermined delay device circuit appliance parameter respectively;
2) establish first lag line and second lag line in the delayer circuit.
3) in predetermined delay threshold value and fixed delay time quotient F scope at interval, the delay electrical parameter of the delayer circuit of each adjacent chip of making has nothing in common with each other, be respectively 1 fixed delay time, 2 fixed delay times, 3 fixed delay times ... F-1 fixed delay time makes each adjacent chips report the code delay time to have nothing in common with each other for the first time.
4) in postponing threshold value and fixed delay time quotient F scope at interval, cycle sets, making chip delays device circuit appliance parameter;
5) according to the setting value of the definite delay threshold value of customer demand, comprising: 1 second, 2 seconds, 3 seconds ... N-1 second, N second; N second≤60 second.
6) the fixed delay time setting value of the minimum read or write speed of chip being determined according to read write line at interval comprises: 1 millisecond, 2 milliseconds, 3 milliseconds ... N-1 millisecond, N millisecond; N millisecond≤999 millisecond.
The present invention's the 3rd purpose is achieved in that and it is characterized in that:
1) antenna contacts connects detuner, and detuner connects the logic digital control module;
2) antenna contacts connects rectifier, and rectifier connects detuner, logic digital control module, modulator, delayer.
3) the inner reservoir that connects of logic digital control module, the outside modulator that connects.
4) modulator connection delay device, delayer connects antenna contacts.
5) delayer inside: the delayed mode application of logic circuit module connects first lag line and second lag line, and first lag line is connected with antenna contacts with second lag line.
6) the delayed mode logical circuit connects modulator.
Its feature also in:
1) the delayed mode logical circuit adds first lag line and constitutes first delay circuit, and the delayed mode logical circuit adds second lag line and constitutes second delay circuit.
2) the lag line type comprises: fixed delay line, digital delay line.
When 3) adopting digital delay line, each circulation that digital delay line was set respectively after second time delay postpones the newspaper sign indicating number time again, postponing to add that is adjusted a time parameter at random on the threshold basis, make each circulation delay time have nothing in common with each other, the adjustment time parameter comprises: 1 millisecond, 2 milliseconds, 3 milliseconds, N-1 millisecond, N millisecond, N millisecond≤999 millisecond.
The present invention's the 4th purpose is achieved in that and it is characterized in that:
1) uses and not have delay circuit, initiatively send the read-only RFID chip of EPC code, by surface acoustic wave delay line connection antenna.
2) SAW (Surface Acoustic Wave) delay line and antenna use electrically conductive ink to be printed on the label, and the read-only RFID chip connects on the SAW (Surface Acoustic Wave) delay line contact.
3) shape of each surface acoustic wave interdigital transducer and distance have nothing in common with each other, and produce different delay-slots, make label send the EPC code according to different sequential.
4) according to label area, electrically conductive ink printing precision and surface acoustic wave interdigital transducer shape and distance limit, determine the delay threshold value and the fixed delay time interval of each batch label, the surface acoustic wave figure of each label of design in postponing threshold range, follow delay threshold cycle scope and making label, making adjacent label fixed delay time have nothing in common with each other at interval.
When 5) the read-only RFID chip that has a delay circuit when use connects antenna and makes label by surface acoustic wave delay line, the delay threshold value of label, promptly in batches with period identification, same period identification amount than the saw delay label that uses the read-only RFID chip manufacturing do not have delay circuit further enlarges, added value smaller or equal to the saw delay label with period identification amount and delay circuit read-only RFID chip with period identification amount sum.
The present invention's the 5th purpose is achieved in that and it is characterized in that:
1) manifest data entry keyboard and display screen are set on read write line, input keyboard comprises: Menu key, omniselector, ten key, C key, enter key.
2) read write line connects one or more antennas.
Constitute aerial array when 3) read write line connects a plurality of antenna.
When 4) commodity that have a RFID intelligent label enter antenna or aerial array electromagnetism scope, beginning identification intelligent label E PC code;
5) after the operator imports manifest quantity, read write line is with the manifest quantity contrast of the intelligent label quantity of reading and input, when conforming to, quantity sends clearance buzzerphone, glittering clearance pilot lamp, buzzerphone, glittering alarm lamp give the alarm during discrepancy of quantity, and show the difference of actual read the code quantity and manifest quantity at display screen, deposit daily record in, and the difference that deposits in the EPCIS information service pml server is compared digital word bank; Read write line is supported external more powerful clearance pilot lamp and alarm lamp and hummer, the display that the external area of support is bigger.
6) during read write line connection management computer, the read write line displaying contents is simultaneously displayed on the management computer, and sends all-clear or alerting signal simultaneously in the management computer end.
7) after read write line had been read whole intelligent labels, operating personnel did not import manifest quantity, and the management computer of read write line and connection sends alerting signal.
8) after alerting signal sends, do not import manifest quantity comparison data yet, read write line or and the management computer with this code of reading deposit in the EPCIS information service pml server without comparison data word bank.
9) read write line is provided with antenna port, Internet of Things port, external device (pilot lamp, hummer, display) port, management computer interface.
10) read write line is provided with clearance pilot lamp, alarm lamp and hummer.
11) built-in data anticollision software of read write line and data comparison management software, the EPC middleware is supported off-line working.
The present invention's the 6th purpose is achieved in that and it is characterized in that:
1) chip production enterprise rfid interrogator is by the networking of EPC middleware connector.
2) label manufacturing enterprise rfid interrogator is by the networking of EPC middleware connector.
3) the type of production label uses enterprise's rfid interrogator by the networking of EPC middleware connector.
4) the sales type label uses enterprise's rfid interrogator by the networking of EPC middleware connector.
5) the EPC object is resolved the networking of ONS server connector.
6) EPCIS information service pml server connector networking.
7) encrypt the networking of EPC product code database connector.
Its feature also in:
1) EPC object parsing ONS server, EPCIS information service pml server, encryption EPC product code database distribute and are arranged on chip production enterprise, label manufacturing enterprise, type of production label use enterprise, sales type label use enterprise.
2) chip production enterprise, label manufacturing enterprise, type of production label use enterprise will encrypt the EPC code and deposit encryption EPC product code database in.
3) the type of production label uses enterprise to deposit commodity data in EPCIS information service pml server.
4) the type of production label uses enterprise, sales type label to use enterprise will be pasted with the intelligent label commodity to go out logistics route data such as warehouse-in and deposit EPCIS information service pml server in.
Advantage of the present invention:
1, remedied the drawback that EPC product electronic code itself does not possess the safety precaution function
EPC product electronic code is not considered security requirement at the beginning of concluding rule, have only by the safety certification communication mechanism between chip and the read write line in the future and remedy, this has just caused the complexity of chip circuit, for the RFID chip cost delays to reduce, has buried the most basic inducement.The present invention proposes to include random code in from coding rule, makes that reducing the RFID chip cost significantly obtains reliable pacing items.
2, the low cost RFID chip structure that a kind of suitable low-and-medium-grade products uses has been proposed
Rely on the security mechanism of encrypted code, just can removal or facilitating chip and read write line between the safety certification communication mechanism, select for use hardware controls to replace microprocessor control, reduce function, area and the power consumption of logic digital control module significantly, simplify detuner, modulator and memory construction, making reduces cost significantly is achieved.
3, the collision-proof method of suitable low cost RFID chip has been proposed
When reducing cost, use fixed delay line or digital delay line, postpone in the threshold range certain, the adjacent chips of making is individual inequality time delay, also the circulation newspaper sign indicating number behind the newspaper sign indicating number is for the second time carried out random interval newspaper sign indicating number by second delay circuit, when many core assemblies sheet enters read write line electromagnetism scope simultaneously,, reach the anticollision recognition effect for the read write line mistake goes out to discern time slot.
4, the low-cost collision-proof method of SAW (Surface Acoustic Wave) delay line antenna and read-only RFID chips incorporate has been proposed
The present invention also proposes a kind of low-cost avoiding collision that uses SAW (Surface Acoustic Wave) delay line antenna and read-only RFID chips incorporate, the read-only RFID chip does not have the anticollision function, SAW (Surface Acoustic Wave) delay line has the function of adjusting time delay, the surface acoustic wave volume is bigger, can be by the mode of electrically conductive ink printing, be produced on surface acoustic wave and antenna on the label together, each label is done time delay to be set, according to the shape of setting the tag design surface acoustic wave interdigital transducer, distance, make its time delay of compound setting requirement, to postpone threshold value is one group, the cyclic design printing makes the time delay of adjacent label different separately.Thereby can realize that the short run anticollision discerns automatically, be suitable for the automatic recognition anti-collision management of low value commodity short run.
5, the method that read write line prevents skip has been proposed
Usually, rfid interrogator both domestic and external is not set method and the function that prevents skip, the present invention is for effective identification, prevent skip, display screen and keyboard are set on read write line especially, and be provided with clearance pilot lamp and alarm lamp, also be provided with hummer, consignee or shipment provider are to read write line input goods sum, read write line is according to identification quantity comparison input value, on display screen, show input value, identification quantity and numerical value difference, send clearance buzzerphone, glittering clearance pilot lamp, perhaps send warning buzzerphone, glittering alarm lamp.Thereby realized that simply read write line prevents the function of skip.
6, perfect RFID chip production and the EPC identification operation management system that adapts to new standard
The EPC code of employing standard, do not need the actual EPC code that writes chip is stored in the server specially, and the present invention is owing to add random code in the EPC code, form the code of one group of unique encryption with sequence number, deposit this EPC code unique, at random in database server, therefore, in EPC identification operation management system, need to add one " the EPC code database that chip writes ".Just because each EPC code that chip writes all is the result who forms at random, remarkable is the result of a sequence layout, like this, even illegal robber of lawless person read an EPC code, also can't extrapolate other code, can't forge in batches, make that RFID chip production and EPC identification operation management system is more safe and reliable.
Description of drawings:
Fig. 1: the EPC coding rule synoptic diagram of act.std
Fig. 2: the EPC coding rule synoptic diagram that the present invention encrypts
Fig. 3: the safety practice synoptic diagram that the RFID label is existing
Fig. 4: the comprehensive safety measure synoptic diagram of RFID label of the present invention
Fig. 5: the RFID label classification synoptic diagram of the property of the present invention is directed to transformation
Fig. 6: RFID label safety technique of the present invention path synoptic diagram
Fig. 7: different application field RFID label security risk, the precautionary measures and attribute positioning analysis synoptic diagram
Fig. 8: standard RFID label chip structure analysis synoptic diagram
Fig. 9: RFID label special chip structure analysis synoptic diagram of the present invention
Figure 10: RFID label special chip retarder arrangement of the present invention is analyzed synoptic diagram
Figure 11: the anticollision label synoptic diagram of forming by saw delay antenna and read-only RFID chip
Figure 12: the anticollision label synoptic diagram of forming by saw delay antenna and the read-only RFID chip that is added with delayer
Figure 13: use fixed delay line anticollision identification operational scheme synoptic diagram
Figure 14: use random delay digital delay line anticollision identification operational scheme synoptic diagram
Figure 15: support input to be identified the read write line structural representation of goods sum
Figure 16: RFID chip production and EPC identification operational system synoptic diagram
Below we will illustrate the present invention in conjunction with the embodiments by above-mentioned accompanying drawing.
Embodiment:
Below to the description of example embodiment of the present invention, relate to the construction method of scrambled, Internet of Things of product electronic code and structure, RFID chip structure and function, collision-proof method, read write line function, anti-skip method.Yet, one of ordinary skill in the art is to be understood that, additive method of the present invention, flow process, system architecture, terminal structure and embodiment also are possible, and, the present invention is not limited to described method, flow process and structure, in addition, recognizes with should be understood that, the present invention is not limited to the cited anticollision parameter area of embodiment, and its basic skills, flow process and structure can be applied to the application of other parameter area anticollisions.
As shown in Figure 1: the EPC coding rule of act.std, in existing EPC coding rule, the difference of each RFID label only is the arrangement of sequence number, as long as steal the EPC code of a RFID like this, just might extrapolate all codes, carry out batch duplicating, owing to there is the possibility of this batch duplicating, just need be when reader-writer to read RFID label, at first authenticate its true and false, so just strengthened the complicacy of RFID chip circuit, enlarged chip area, power consumption, dwindled and replied power and read distance.Therefore, reduce the essential measure of RFID chip cost and should start with, formulate a coding rule that has encryption function, fundamentally stop bootlegging in batches from coding rule.
As shown in Figure 2: the EPC coding rule that the present invention encrypts, the present invention adds a random code in the EPC of standard code structure, make serial number code add that code forms a random groups number immediately, this is organized number immediately deposit database in, anyone robber reads an EPC code, can't extrapolate other code, guarantee the security of EPC code on the whole.Unauthorized theft to one an EPC code can't batch duplicating, even duplicate a RFID, since the EPCIS server record logistics state and the path of all RFID labels, after the RFID that duplicates enters system, system screens and finds not to be inconsistent with real logistics state, will be found immediately, therefore also can't realize illegal objective, thereby realize the security of system of RFID.Just because of can fundamentally stopping to copy, therefore, the RFID chip just can be cancelled the security authentication mechanism in the identification communication process, and the facilitating chip circuit dwindles area, power consumption greatly, improves and replys power and recognition speed, enlarges decipherment distance.
As shown in Figure 3: the safety practice that the RFID label is existing, existing RFID label are used unencrypted EPC code, have only the logic digital control module complicacy that strengthens the RFID chip to ensure the authentication security of EPC system communication identification.Thereby RFID label cost is difficult to reduce.
As shown in Figure 4: the comprehensive safety measure of RFID label of the present invention, the security means that the present invention uses the EPC code of encryption and anti-counterfeiting base material to make outside the chip functions such as label ensures the EPC security of system, can reduce the complicacy of RFID chip logic digital control module greatly.
RFID label cost significantly reduces.
As shown in Figure 5: the RFID label classification of the property of the present invention is directed to transformation, the present invention allows the low common RFID label of cost price obtain higher safety guarantee and anticollision function for simple label adds anticollision and cryptosecurity mechanism.
As shown in Figure 6: RFID label safety technique of the present invention path, do not consider security mechanism at the EPC code of traditional RFID, the present invention adds cipher mechanism in coding rule, and record random coded result guarantees security of system.Rely on electronic chip to accept the complicated circuit that the read write line order realizes label dormancy or activation at traditional RFID, the present invention proposes to rely on the label delayed response, and the facilitating chip circuit is realized anticollision.Rely on the complicated circuit of interactive authentication communication assurance safety between electronic chip and the read write line at traditional RFID, the present invention proposes not rely on duplexing interactive authentication communication, and the facilitating chip circuit guarantees security of system, thereby it is simple to reach the chip circuit trend, the purpose that cost reduces.
As shown in Figure 7: different application field RFID label security risk, the precautionary measures and attribute positioning analysis, that the RFID label is mainly used in is false proof, tax control, logistics three big fields.The RFID label in the security risk in Application in Anti-counterfeiting field is: label information is stolen, label entries is replaced by imitated, object of protection, and the corresponding selectable precautionary measures are: the EPC coding is carried out encipherment protection, strengthening system admin-authentication; False proof by base material, improve difficulty of prevention and cure; By anti-transfer measure, prevent label transfer.The problem that mainly solves in the Application in Anti-counterfeiting field is the security of label itself.Itself consider that the recognition method of false proof RFID label mainly is the demand of the single identification of point-of-sale terminal, can use the label of only supporting single recognition function from false proof merely, this label cost is minimum, relatively is suitable for reserve price value product and uses.
The RFID label in the security risk of tax control application is: tax information interrupts, the tax control object runs off; The corresponding selectable precautionary measures are: strengthen popularizing of tax control facility, control whole tax informations; Strengthen the supervision of rope ticket mechanism with lottery, make point-of-sale terminal improve the rate of making out an invoice; As seen, the problem that mainly solves in the tax control application is the problem of management of tax control management system, rather than the security of label itself.
The RFID label in the security risk in logistical applications field is: batch identification rate and recognition efficiency, product price are obtained by the adversary by illegal change, logistics information; The corresponding selectable precautionary measures are: improve the anticollision effect and the efficient of label, increase anti-skip function in read write line; Tighten management security of system rank; The protection of money flower information system security.First improvement that relates to label function and read write line function, back two protections that relate to security of system.From the requirement of logistical applications, the recognition method of RFID is through the overall process of logistics management, must support batch identification, although and support that the label price of batch identification is higher, be more suitable in the needs of false proof, the tax control and the logistics of high-value product.
Can learn from above analysis, satisfy the RFID label of false proof, tax control and logistics needs comprehensively, can adopt higher standard RFID chip of price and cost of the present invention lower but support the RFID chip of batch identification for needs; For not needing the holder flow management, only satisfying the RFID label of false proof and tax control needs, can adopt the low chip of only supporting single tag recognition of price valency, and cost of the present invention is lower but support the RFID chip of batch identification.
As shown in Figure 8: the structure analysis of standard RFID label chip, the RFID label of standard comprises antenna and chip two parts, in chip, comprises rectifier, for each functional module provides energy; Detuner carries out demodulation to the digital signal that antenna receives; The logic digital control module is controlled safety certification, encrypting and decrypting, signal transmitting and receiving, reading and writing data; Storer, record EPC code; Modulator is modulated the digital signal that sends.Wherein the logic digital control module usually uses microcontroller, realize to handle inquiry command, carry out anticollision protocol, carry out the data integrity checking, the run memory read-write operation, carry out output control and streams data, powerful, take bigger chip area, consume higher energy.The storer of standard chips often comprises four storeies, is respectively: reserve storage, EPC storer, TID storer and user memory.The RFID chip structure of this standard is supported high-value goods, and extensive identification at a high speed in batches is the field of major function with the logistics management.
As shown in Figure 9: RFID label special chip of the present invention structure analysis, in the chip of RFID label of the present invention, add delayer, adopt hardware controls to replace microprocessor control, reduce function, area and the power consumption of logic digital control module significantly, simplify detuner and modulator structure, in storer, only keep the EPC storer, cancellation reserve storage, TID storer and user memory.This programme improves data security by coding encrypting, and is false proof by label carrier, improves imitation difficulty, facilitating chip safety circuit and authentication, recognition mechanism, and the facilitating chip design constraint reduces area and power consumption.This programme is supported low-value product, single identification or batch, low speed identification on a small scale at least, is the field of assisting based on false proof, tax control, logistics management.This programme adopts each single-chip to preset the delay circuit parameter, and initiatively queuing sends the EPC code.Make the label overall power reduce, improve tag responses power, improve recognition speed, strengthen tag recognition distance.
As shown in figure 10: RFID label special chip retarder arrangement of the present invention is analyzed, in the delayer of RFID label special chip of the present invention, be provided with delayed mode logical circuit, first lag line and second lag line, when the delayed mode logical circuit determines UNICOM's first lag line, when is communicated with second lag line.First lag line is set different delay time parameters with second lag line.
Britain's silicon photon light magazine " Nature Photonics " (Nature Photonics) opening number of starting publication in January, 2007 has been published relevant paper on (on Dec 21, numbers) in 2006.IBM has developed the technology that forms fine lag line (Delay Line) on silicon.It is supported that technology of the present invention is realized.
As shown in figure 11: the anticollision label of forming by saw delay antenna and read-only RFID chip, use the read-only chip that does not have delay circuit, simplifies most to send the EPC code, by the SAW (Surface Acoustic Wave) delay line control antenna transmission timing on the label, that is: use SAW (Surface Acoustic Wave) delay line to control EPC code transmitting time.SAW (Surface Acoustic Wave) delay line has the function of adjusting time delay, the surface acoustic wave volume is bigger, mode that can be by the electrically conductive ink printing, be produced on surface acoustic wave and antenna on the label together, to each label do to set time delay, according to shape, the distance of setting the tag design surface acoustic wave interdigital transducer, make its time delay of compound setting requirement, to postpone threshold value is one group, the cyclic design printing, make the time delay of adjacent label different separately, the read-only RFID chip connects on the SAW (Surface Acoustic Wave) delay line contact.Thereby can realize that the short run anticollision discerns automatically, be suitable for the automatic recognition anti-collision management of low value commodity short run.SAW (Surface Acoustic Wave) delay line has become mature technology at home, and the SAW (Surface Acoustic Wave) delay line technology that 55 in Nanjing and Chongqing 28 are held is all supported realization of the present invention.
As shown in figure 12: the anticollision label of forming by saw delay antenna and the read-only RFID chip that is added with delayer, in another kind of embodiment, the read-only RFID chip that use is added with delayer connects antenna making label by surface acoustic wave delay line, the delay threshold value of label, promptly further enlarge in batches, have better customer demand adaptability with period identification.
As shown in figure 13: use fixed delay line anticollision identification operational scheme, this figure represents the label anti-collision identification process principle of a kind of embodiment, in the present embodiment, use fixed delay line to produce A, B, three chips of C are also made the RFID label, setting the delay threshold value is that the second lag line fixed delay time is spaced apart 400 milliseconds, the A chip first lag line fixed delay time is spaced apart 100 milliseconds, the B chip first lag line fixed delay time is spaced apart 200 milliseconds, the C chip first lag line fixed delay time is spaced apart 300 milliseconds, work as A, B, the electromagnetic radiation scope that three chips of C enter reading and writing device antenna simultaneously, the A chip sends the EPC code after postponing 100 milliseconds, read write line has just identified the A label immediately; The B chip sends the EPC code after postponing 200 milliseconds, read write line has just identified the B label immediately; The C chip sends the EPC code after postponing 300 milliseconds, read write line has just identified the C label immediately; Consignee or shipment provider add up to 3 to read write line input goods, and read write line finds that through comparison input value conforms to the number of labels that identifies, and sends all-clear immediately.In actual applications, owing to set program to read write line input order commodity total quantity, postpone threshold value and can be decided to be 2-3 second, even it is longer, fixed delay time may taper to below 20 milliseconds according to chip frequency type and read write line function at interval, threshold capacity (quotient that postpones threshold value and fixed delay time interval) just can expand to up to a hundredly even hundreds of like this, can satisfy common batch identification demand.
As shown in figure 14: use random delay digital delay line anticollision identification operational scheme, this figure represents the label anti-collision identification process principle of a kind of embodiment, in the present embodiment, use digital delay line to produce A, B, C three class chips are also made the RFID label, setting the delay threshold value is that the second lag line fixed delay time is spaced apart 400 milliseconds, the category-A chip first lag line fixed delay time is spaced apart 100 milliseconds, the category-B chip first lag line fixed delay time is spaced apart 200 milliseconds, the C class chip first lag line fixed delay time is spaced apart 300 milliseconds, as two groups of A, B, the electromagnetic radiation scope that 6 chips of C three classes enter reading and writing device antenna simultaneously, two category-A chips send the EPC code simultaneously after postponing 100 milliseconds, the signal that read write line is received clashes collision and can't discern; Two category-B chips send the EPC code after postponing 200 milliseconds, the signal that read write line is received clashes collision and can't discern; Two C class chips send the EPC code after postponing 300 milliseconds, the signal that read write line is received clashes collision and can't discern; All 6 chips respectively at interval 400 milliseconds and add a random time at interval after, second and third time newspaper sign indicating number, as seen from the figure, along with random time conversion at interval, several time slots that can identification label have appearred, in time slot, read write line identifies the EPC code of each label, and consignee or shipment provider add up to 6 to read write line input goods, and read write line is through comparison, find that input value conforms to the number of labels that identifies, send all-clear immediately.In actual applications, threshold capacity can expand to up to a hundred even hundreds of, adds random delay mechanism, can satisfy more large batch of identification demand.
As shown in figure 15: support input to be identified the read write line structure of goods sum, read write line of the present invention has display screen and keyboard, have several interfaces and port, connect an antenna or several antennas, Internet of Things, management computer respectively, and be provided with clearance pilot lamp and alarm lamp, also be provided with hummer.Consignee or shipment provider are to read write line input goods sum, read write line is according to identification quantity comparison input value, on display screen, show input value, identification quantity and numerical value difference, when conforming to, quantity sends clearance buzzerphone, glittering clearance pilot lamp, send warning buzzerphone, glittering alarm lamp during discrepancy of quantity, remind consignee or shipment provider to discern again.
As shown in figure 16: RFID chip production and EPC identification operational system, chip production enterprise rfid interrogator is by the networking of EPC middleware connector; Label manufacturing enterprise rfid interrogator is by the networking of EPC middleware connector; The type of production label uses enterprise's rfid interrogator by the networking of EPC middleware connector; The sales type label uses enterprise's rfid interrogator by the networking of EPC middleware connector; The EPC object is resolved the networking of ONS server connector; The networking of EPCIS information service pml server connector; Encrypt the networking of EPC product code database connector.EPC object parsing ONS server, EPCIS information service pml server, encryption EPC product code database distribute and are arranged on chip production enterprise, label manufacturing enterprise, type of production label use enterprise, sales type label use enterprise; Chip production enterprise, label manufacturing enterprise, type of production label use enterprise will encrypt the EPC code and deposit encryption EPC product code database in; The type of production label uses enterprise to deposit commodity data in EPCIS information service pml server; The type of production label uses enterprise, sales type label to use enterprise will be pasted with the depositary management data that the intelligent label commodity go out warehouse-in and deposits EPCIS information service pml server in.
As above-mentioned; though the present invention is illustrated according to the example and the accompanying drawing that limit; but the present invention is not limited to these; the people who possesses common knowledge in the technical field under the present invention is in technological thought of the present invention and claim scope; do not spend performing creative labour; on the basis of the foregoing description, can make multiple variation; develop new anticollision, anti-skip form; can realize purpose of the present invention equally, but this variation obviously should be within the protection domain of appended claims.
Claims (10)
1, a kind of EPC product electronic code scrambled method is characterized in that it may further comprise the steps:
1) in the EPC of standard product electronic code structure, that is: outside edition code, supvr's code, object type code, the sequence number, adds one group of accidental enciphering code;
2) the accidental enciphering code adds the implantation site in EPC product electronic code, before sequence number or after the sequence number;
3) after the EPC product electronic code that increases the accidental enciphering code generates or write after the chip memory, deposit database in;
4) after the EPC product electronic code that generates complete increase accidental enciphering code in chip manufacturing proces write in the chip memory, whole codes that must will write chip were imprinted CDs, and offer the label manufacturer with chip;
5) after the label manufacturer uses the chip production RFID label that writes the EPC product electronic code that increases the accidental enciphering code, must will write whole code CDs of chip, offer label order manufacturer with label;
6) the accidental enciphering code is non-coherent function of time code or the non-coherent code of natural number at random.
2, according to the described EPC product of claim 1 electronic code scrambled method, it is characterized in that:
1) the accidental enciphering code restriction that the difference and the chip manufacture of safety requirements write code technology according to the client, adopt the function of time of different accuracy respectively, comprising: the function of time of the function of time, 100,000/second of the function of time, ten thousand/second that is accurate to the function of time, the signa of 1/10th seconds the function of time, centisecond;
2) the accidental enciphering code adopts the not natural number at random of isotopic number respectively according to the difference of client to safety requirements, comprising: 1 figure place, 2 figure places, 3 figure places, 4 figure places, 5 figure places, 6 figure places ... N-1 figure place, N position natural number; Sequence number figure place in N≤EPC product code;
3) label is ordered goods for discussing and is used read write line to read whole label E PC codes, deposits database in, or uses the CD of enclosing to deposit label E PC code in database.
3, a kind of RFID chip timesharing newspaper sign indicating number collision-proof method of lining up in advance is characterized in that it may further comprise the steps:
1) in the RFID chip, adds first delay circuit and second delay circuit, after first delay circuit is set the RFID label and is entered read write line electromagnetism scope, send time delay of EPC code for the first time, second delay circuit set RFID label on the scene, second time and leave the theatre before time delay of circulation transmission EPC code;
2) after each RFID label enters read write line inquiry electromagnetism scope, obtains energy, before leaving the theatre, at times by first delay circuit and second delay circuit in the chip, according to predefined delay sequential, the EPC product electronic code data that have the accidental enciphering code of memory stores are reported and submitted in circulation;
3) after each chip is reported and submitted code data for the first time, control by the delayed mode logical circuit, according to pre-set time interval, report and submit for the second time code data, infinite circulation before not breaking away from read write line inquiry electromagnetic field scope, after breaking away from the electromagnetic field scope, the supply of chip degradedness, the delayed mode logical circuit is returned to initial time sequence status;
4) be pasted with receiving and the shipment link of RFID label commodity of the present invention, consignee or shipment provider, according to the described commodity sum of goods manifest, computer with total number of packages numerical value input read write line of commodity or read write line connection, read the whole EPC codes that meet the commodity total value fully in goods is in reading and writing device antenna electromagnetic signal coverage after, the computer that read write line or read write line connect sends all-clear; The total number of packages numerical value of commodity input mode comprises: total numerical value is input or the input of total numerical value bar code scan manually;
5) after read write line is failed to read the code number that conforms to the commodity total value of importing, commodity and has just been broken away from the reading and writing device antenna coverage, the computer that read write line or read write line connect sends alerting signal immediately, and shows the difference of actual read the code quantity and manifest quantity.
4, according to the described RFID chip of the claim 3 timesharing newspaper sign indicating number collision-proof method of lining up in advance, it is characterized in that:
1) according to the minimum read or write speed of the supporting read write line of production chip to chip, determine the minimum interval value of chip delay circuits, that is: fixed delay time spacing value, the delay parameter of being scheduled to as first delay circuit;
2) the largest interval time value that queuing identification maximum quantity is required, adds up to according to the client that is: postpones threshold value, as the predetermined delay parameter of second delay circuit;
3) in predetermined delay threshold value span scope, according to fixed delay time at interval, predetermined delay device circuit appliance parameter respectively;
2) establish first lag line and second lag line in the delayer circuit;
3) in predetermined delay threshold value and fixed delay time quotient F scope at interval, the delay electrical parameter of the delayer circuit of each adjacent chip of making has nothing in common with each other, be respectively 1 fixed delay time, 2 fixed delay times, 3 fixed delay times ... F-1 fixed delay time makes each adjacent chips report the code delay time to have nothing in common with each other for the first time;
4) in postponing threshold value and fixed delay time quotient F scope at interval, cycle sets, making chip delays device circuit appliance parameter;
5) according to the setting value of the definite delay threshold value of customer demand, comprising: 1 second, 2 seconds, 3 seconds ... N-1 second, N second; N second≤60 second;
6) the fixed delay time setting value of the minimum read or write speed of chip being determined according to read write line at interval comprises: 1 millisecond, 2 milliseconds, 3 milliseconds ... N-1 millisecond, N millisecond; N millisecond≤999 millisecond.
5, a kind of RFID chip structure is characterized in that:
1) antenna contacts connects detuner, and detuner connects the logic digital control module;
2) antenna contacts connects rectifier, and rectifier connects detuner, logic digital control module, modulator, delayer;
3) the inner reservoir that connects of logic digital control module, the outside modulator that connects;
4) modulator connection delay device, delayer connects antenna contacts;
5) delayer inside: the delayed mode application of logic circuit module connects first lag line and second lag line, and first lag line is connected with antenna contacts with second lag line;
6) the delayed mode logical circuit connects modulator.
6, according to the described RFID chip structure of claim 5, it is characterized in that:
1) the delayed mode logical circuit adds first lag line and constitutes first delay circuit, and the delayed mode logical circuit adds second lag line and constitutes second delay circuit;
2) the lag line type comprises: fixed delay line, digital delay line;
When 3) adopting digital delay line, each circulation that digital delay line was set respectively after second time delay postpones the newspaper sign indicating number time again, postponing to add that is adjusted a time parameter at random on the threshold basis, make each circulation delay time have nothing in common with each other, the adjustment time parameter comprises: 1 millisecond, 2 milliseconds, 3 milliseconds, N-1 millisecond, N millisecond, N millisecond≤999 millisecond.
7, a kind of anticollision label construction and collision-proof method of being made up of SAW (Surface Acoustic Wave) delay line antenna and read-only RFID chip is characterized in that:
1) uses and not have delay circuit, initiatively send the read-only RFID chip of EPC code, by surface acoustic wave delay line connection antenna;
2) SAW (Surface Acoustic Wave) delay line and antenna use electrically conductive ink to be printed on the label, and the read-only RFID chip connects on the SAW (Surface Acoustic Wave) delay line contact;
3) shape of each surface acoustic wave interdigital transducer and distance have nothing in common with each other, and produce different delay-slots, make label send the EPC code according to different sequential;
4) according to label area, electrically conductive ink printing precision and surface acoustic wave interdigital transducer shape and distance limit, determine the delay threshold value and the fixed delay time interval of each batch label, the surface acoustic wave figure of each label of design in postponing threshold range, follow the circulation of delay threshold range and making label, making adjacent label fixed delay time have nothing in common with each other at interval;
When 5) the read-only RFID chip that has a delay circuit when use connects antenna and makes label by surface acoustic wave delay line, the delay threshold value of label, promptly in batches with period identification, same period identification amount than the saw delay label that uses the read-only RFID chip manufacturing do not have delay circuit further enlarges, added value smaller or equal to the saw delay label with period identification amount and delay circuit read-only RFID chip with period identification amount sum.
8, a kind of anti-skip recognition methods of read write line of importing manifest data, statistics skip quantity is characterized in that:
1) manifest data entry keyboard and display screen are set on read write line, input keyboard comprises: Menu key, omniselector, ten key, C key, enter key;
2) read write line connects one or more antennas;
Constitute aerial array when 3) read write line connects a plurality of antenna;
When 4) commodity that have a RFID intelligent label enter antenna or aerial array electromagnetism scope, beginning identification intelligent label E PC code;
5) after the operator imports manifest quantity, read write line is with the manifest quantity contrast of the intelligent label quantity of reading and input, when conforming to, quantity sends clearance buzzerphone, glittering clearance pilot lamp, buzzerphone, glittering alarm lamp give the alarm during discrepancy of quantity, and show the difference of actual read the code quantity and manifest quantity at display screen, deposit daily record in, and the difference that deposits in the EPCIS information service pml server is compared digital word bank; Read write line is supported external more powerful clearance pilot lamp and alarm lamp and hummer, the display that the external area of support is bigger;
6) during read write line connection management computer, the read write line displaying contents is simultaneously displayed on the management computer, and sends all-clear or alerting signal simultaneously in the management computer end;
7) after read write line had been read whole intelligent labels, operating personnel did not import manifest quantity, and the management computer of read write line and connection sends alerting signal;
8) after alerting signal sends, do not import manifest quantity comparison data yet, read write line or and the management computer with this code of reading deposit in the EPCIS information service pml server without comparison data word bank;
9) read write line is provided with antenna port, Internet of Things port, external device port, management computer interface;
10) read write line is provided with clearance pilot lamp, alarm lamp and hummer;
11) built-in data anticollision software of read write line and data comparison management software, the EPC middleware is supported off-line working.
9, a kind of RFID chip production and EPC identification operation management system is characterized in that:
1) chip production enterprise rfid interrogator is by the networking of EPC middleware connector;
2) label manufacturing enterprise rfid interrogator is by the networking of EPC middleware connector;
3) the type of production label uses enterprise's rfid interrogator by the networking of EPC middleware connector;
4) the sales type label uses enterprise's rfid interrogator by the networking of EPC middleware connector;
5) the EPC object is resolved the networking of ONS server connector;
6) EPCIS information service pml server connector networking;
7) encrypt the networking of EPC product code database connector.
10, produce, discern operation management system according to the described RFID of claim 9, it is characterized in that:
1) EPC object parsing ONS server, EPCIS information service pml server, encryption EPC product code database distribute and are arranged on chip production enterprise, label manufacturing enterprise, type of production label use enterprise, sales type label use enterprise;
2) chip production enterprise, label manufacturing enterprise, type of production label use enterprise will encrypt the EPC code and deposit encryption EPC product code database in;
3) the type of production label uses enterprise to deposit commodity data in EPCIS information service pml server;
4) the type of production label uses enterprise, sales type label to use enterprise will be pasted with the intelligent label commodity to go out logistics route data such as warehouse-in and deposit EPCIS information service pml server in.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100849268A CN101246557A (en) | 2008-03-10 | 2008-03-10 | EPC enciphering code, RFID chip anti-collision method, structure and reader-writer and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100849268A CN101246557A (en) | 2008-03-10 | 2008-03-10 | EPC enciphering code, RFID chip anti-collision method, structure and reader-writer and system |
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| CN101246557A true CN101246557A (en) | 2008-08-20 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122365A (en) * | 2011-02-28 | 2011-07-13 | 中国电子技术标准化研究所 | Method for accessing label storage area in radio frequency identification system and label |
| CN103336979A (en) * | 2013-07-05 | 2013-10-02 | 广东金泽投资集团有限公司 | RFID location and management device applicable to Internet of Things |
| CN103400164A (en) * | 2013-07-18 | 2013-11-20 | 无锡凯施智联软件科技有限公司 | Real-time radio frequency identification data acquisition method |
| CN103745253A (en) * | 2013-12-23 | 2014-04-23 | 宁波立芯射频股份有限公司 | Dual-chip electronic tag-based encryption verification method |
| CN103985028A (en) * | 2014-05-20 | 2014-08-13 | 邬钰盛 | Drug logistics management system based on technology of internet of things |
| CN110176266A (en) * | 2019-05-30 | 2019-08-27 | 苏州汇成芯通物联网科技有限公司 | The NVM speed-coding system of super high frequency radio frequency chip |
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2008
- 2008-03-10 CN CNA2008100849268A patent/CN101246557A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102122365A (en) * | 2011-02-28 | 2011-07-13 | 中国电子技术标准化研究所 | Method for accessing label storage area in radio frequency identification system and label |
| CN103336979A (en) * | 2013-07-05 | 2013-10-02 | 广东金泽投资集团有限公司 | RFID location and management device applicable to Internet of Things |
| CN103400164A (en) * | 2013-07-18 | 2013-11-20 | 无锡凯施智联软件科技有限公司 | Real-time radio frequency identification data acquisition method |
| CN103745253A (en) * | 2013-12-23 | 2014-04-23 | 宁波立芯射频股份有限公司 | Dual-chip electronic tag-based encryption verification method |
| CN103745253B (en) * | 2013-12-23 | 2016-06-15 | 宁波立芯射频股份有限公司 | Cryptographic check method based on dual chip electronic tag |
| CN103985028A (en) * | 2014-05-20 | 2014-08-13 | 邬钰盛 | Drug logistics management system based on technology of internet of things |
| CN110176266A (en) * | 2019-05-30 | 2019-08-27 | 苏州汇成芯通物联网科技有限公司 | The NVM speed-coding system of super high frequency radio frequency chip |
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