CN106650535A - Multi-object data exchange method based on radio frequency identification - Google Patents
Multi-object data exchange method based on radio frequency identification Download PDFInfo
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- CN106650535A CN106650535A CN201611188898.5A CN201611188898A CN106650535A CN 106650535 A CN106650535 A CN 106650535A CN 201611188898 A CN201611188898 A CN 201611188898A CN 106650535 A CN106650535 A CN 106650535A
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- rfid tag
- data exchange
- write line
- read write
- random number
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10019—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves resolving collision on the communication channels between simultaneously or concurrently interrogated record carriers.
Abstract
The invention belongs to the technical field of internet of things, and discloses a multi-object data exchange method based on radio frequency identification (RFID). When a plurality of RFID tags in one batch need to exchange data with a reader-writer, the value of an internal counter for the RFID tags is set via communication between the reader-writer and the RFID tags, and only one RFID tag is guaranteed to exchange data with the reader-writer at one time according to the value of the internal counter, so that the technical problem of communication conflict when the plurality of RFID tags simultaneously communicate with the reader-writer is solved; further, when the reader-writer cannot correctly receive the identification code of the RFID tag, further communication is performed via a retransmission mode, so that the problem of data exchange failure caused by incorrect receiving at one time is avoided; and moreover, when the identification code cannot be correctly received multiple times, the counter is reset, so that the problem of data exchange failure caused by a reason that the identification code of the same RFID tag cannot be correctly received multiple times is avoided.
Description
Technical field
The invention belongs to internet of things field, hands over more particularly, to a kind of many object datas based on RF identification
Change method.
Background technology
Internet of Things (Internet of Things) is referred to the end-equipment of ubiquitous (Ubiquitous)
(Devices) and facility (Facilities), including sensor, mobile terminal, industrial system, the numerical control for possessing " inherent intelligence "
System, home intelligent facility, video monitoring system etc. and " external enable " (Enabled), such as stick RFID (Radio
Frequency Identification, RF identification) the various assets (Assets) of label, the individual of portable radio terminal with
Vehicle etc. " intelligent object or animal " or " SMART DUST " is (Mote), by various wireless and/or wired long range and/
Or short distance communication real-time performance is interconnected (M2M), applies big integrated (Grand Integration) and based on cloud meter
The SaaS operation isotypes of calculation, in Intranet (Intranet), private network (Extranet), and/or internet (Internet) environment
Under, using appropriate security assurance information mechanism, there is provided safely controllable or even personalized real time on-line monitoring, positioning review,
Alarm linkage, dispatch control, program management, remotely control, safety precaution, long-range repair and maintenance, online upgrading, statistical report form, decision-making
The management and service functions such as support, leader's desktop (Cockpit Dashboard shown in collection), realize to the " high of " all things on earth "
It is effect, energy-conservation, safe and environment-friendly " " pipe, control, battalion " integration.
In technology of Internet of things, it is conventional means to carry out data exchange by RFID, for example, transport, store in a warehouse and manage in logistics
The scenes such as reason need the information to article to be obtained anywhere or anytime or updated.In prior art, typically by read write line
Once read and write a RFID tag, but generally need once to realize the acquisition of multiple Item Information or more to improve efficiency
Newly, that is, the data message (as shown in Figure 1) that multiple RFID tags are once read and write by read write line is needed, it is multiple in this case
RFID tag is communicated so as to communication contention aware can occur with read write line simultaneously.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of many objects based on RF identification
Method for interchanging data, its object is to when multiple RFID tags while when being communicated with read write line, can realize each RFID
Label carries out successively data exchange, thus solves to be sent out when multiple RFID tags are communicated with read write line simultaneously in prior art
The technical problem of raw communication contention aware.
For achieving the above object, the invention provides a kind of many object data exchange methods based on RF identification, including
Following steps：
S1, the RFID tag for carrying out data exchange will be needed to be set to state to be identified, and its internal counter is arranged
For 0；The RFID tag at least two for needing to carry out data exchange；
S2, if in state to be identified RFID tag, then it is all in state to be identified and internal counter be 0
RFID tag to read write line send identification code；
If the number of the identification code that S3, the read write line are received is more than 1, to all in state to be identified
RFID tag sends and unsuccessfully orders；If the number of the identification code that the read write line is received is 1, S7 is gone to step；
If S4, to receive the internal counter of the RFID tag unsuccessfully ordered not be 0, the inside of the RFID tag
Counter adds 1；If the internal counter for receiving the RFID tag unsuccessfully ordered is 0, the RFID tag produces first
Random number or the second random number；
If the random number that S5, the RFID tag are produced is the first random number, the RFID marks of the first random number are produced
The internal counter of label remains 0, and again to read write line transmission identification code, and go to step S3；If the RFID tag
The random number of generation is the second random number, then the internal counter for producing the RFID tag of the second random number plus 1, and goes to step
S6；
If the random number that S6, all RFID tags are produced is the second random number, read write line is in all
The RFID tag of state to be identified sends success command, the RFID tag of all states to be identified for receiving success command it is interior
Portion's counter subtracts 1, and goes to step S2；
If S7, the read write line are not properly received the identification code of the RFID tag, the read write line sends one
Individual to retransmit order, the RFID tag to read write line sends identification code, and goes to step S7；If the read write line connects be properly received
To the identification code of the RFID tag, then the data exchange command comprising the identification code is sent, the RFID tag is arrived
After the data exchange command, data exchange is carried out with the read write line into data exchange state, institute after the completion of data exchange
State RFID tag to be updated to recognize state；The read write line sends success command, all to receive the to be identified of success command
The internal counter of the RFID tag of state subtracts 1；
If the internal counter of S8, only one of which RFID tag is equal to 1 and returns response, S7 is gone to step；Otherwise turn
Step S3.
In one embodiment of the present of invention, if the read write line sends the number of times for retransmitting order more than given threshold,
Go to step S2.
In one embodiment of the present of invention, the span of the given threshold is 3-10.
In one embodiment of the present of invention, the data exchange command in step S7 is reading data command, the data
It is exchanged for the read write line and reads data from the RFID tag.
In one embodiment of the present of invention, the data exchange command in step S7 is to write data command, the data
It is exchanged for the read write line and writes data to the RFID tag.
In one embodiment of the present of invention, the identification code of the RFID tag is unique electricity that the RFID tag has
Son coding.
In one embodiment of the present of invention, first random number is 0, and second random number is 1.
In one embodiment of the present of invention, first random number is 1, and second random number is 0.
In one embodiment of the present of invention, the RFID tag is encoded using EPC.
In one embodiment of the present of invention, the information of the EPC codings includes：Production firm's code name, client's code name, species
Numbering and serial number.
In general, by the contemplated above technical scheme of the present invention compared with prior art, with following beneficial effect
Really：
(1) present invention arranges the internal counter of RFID tag by the communication between read write line and RFID tag
Value, so as to ensure to carry out data exchange between an only one of which RFID tag and read write line according to the value of internal counter,
So as to solve when multiple RFID tags while there is the technical problem of communication contention aware when being communicated with read write line；
(2) further, when read write line cannot be correctly received the identification code of RFID tag, carried out by retransmission mode
Further communication, it is to avoid because being once unable to properly receive and caused data exchange failure problem；And repeatedly cannot be just
When really reception, re-start counter setting, it is to avoid the identification code because being repeatedly unable to properly receive same RFID tag
And caused data exchange failure problem；
(3) further, RFID tag is encoded using EPC, for example, can include production firm's code name, client's code name, plant
The information such as class numbering and serial number, such that it is able to flexible the information that can be preserved in RFID tag is arranged, and is conveniently adapted to not
Same application scenarios.
Description of the drawings
Fig. 1 is the schematic diagram that multiple RFID tags are communicated with read write line simultaneously in the embodiment of the present invention；
Fig. 2 is the schematic flow sheet of many object data exchange methods in the embodiment of the present invention based on RF identification；
Fig. 3 is EPC coding schematic diagrams in the embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.As long as additionally, technical characteristic involved in invention described below each embodiment
Not constituting conflict each other just can be mutually combined.
As shown in Fig. 2 a kind of many object data exchange methods based on RF identification are embodiments provided, including
Following steps：
S1, the RFID tag for carrying out data exchange will be needed to be set to state to be identified, and its internal counter is arranged
For 0；The RFID tag at least two for needing to carry out data exchange；
S2, if in state to be identified RFID tag, then it is all in state to be identified and internal counter be 0
RFID tag to read write line send identification code；
Normally, the identification code of the RFID tag is unique electronic code that the RFID tag has.For example may be used
To be encoded using EPC.Preferably as shown in figure 3, the information of EPC codings can include：Production firm's code name, client's code name, kind
Class is numbered and serial number.
If the number of the identification code that S3, the read write line are received is more than 1, to all in state to be identified
RFID tag sends and unsuccessfully orders；If the number of the identification code that the read write line is received is 1, S7 is gone to step；
If S4, to receive the internal counter of the RFID tag unsuccessfully ordered not be 0, the inside of the RFID tag
Counter adds 1；If the internal counter for receiving the RFID tag unsuccessfully ordered is 0, the RFID tag produces first
Random number or the second random number；
If the random number that S5, the RFID tag are produced is the first random number, the RFID marks of the first random number are produced
The internal counter of label remains 0, and again to read write line transmission identification code, and go to step S3；If the RFID tag
The random number of generation is the second random number, then the internal counter for producing the RFID tag of the second random number plus 1, and goes to step
S6；
Specifically, first random number is different with the value of the second random number, is only used for playing a part of differentiation, to it
Concrete value is not construed as limiting.Such as described first random number is 1, and second random number is 0；Or first random number is
0, second random number is 1.As long as it is different with the value of the second random number to meet the first random number.In present invention enforcement
In example in corresponding accompanying drawing, with first random number as 0, second random number is to illustrate as a example by 1.
If the random number that S6, all RFID tags are produced is the second random number, read write line is in all
The RFID tag of state to be identified sends success command, the RFID tag of all states to be identified for receiving success command it is interior
Portion's counter subtracts 1, and goes to step S2；
If S7, the read write line are not properly received the identification code of the RFID tag, the read write line sends one
Individual to retransmit order, the RFID tag to read write line sends identification code, and goes to step S7；If the read write line connects be properly received
To the identification code of the RFID tag, then the data exchange command comprising the identification code is sent, the RFID tag is arrived
After the data exchange command, data exchange is carried out with the read write line into data exchange state, institute after the completion of data exchange
State RFID tag to be updated to recognize state；The read write line sends success command, all to receive the to be identified of success command
The internal counter of the RFID tag of state subtracts 1；
In this step, further, if the read write line sends the number of times for retransmitting order more than given threshold (generally
The span of the given threshold is 3-10), then go to step S2；
Further, to read data command, the data exchange is the read-write to data exchange command described in this step
Device reads data from the RFID tag；Or the data exchange command, to write data command, the data exchange is described
Read write line to the RFID tag writes data.
If the internal counter of S8, only one of which RFID tag is equal to 1 and returns response, S7 is gone to step；Otherwise turn
Step S3.
The method that the present invention is provided can apply to various use RFID and carry out the scene of data exchange, such as logistics fortune
Give, warehousing management etc., these application scenarios are required to realize and the data exchange between a batch and multiple RFID tags.
As it will be easily appreciated by one skilled in the art that the foregoing is only presently preferred embodiments of the present invention, not to
The present invention, all any modification, equivalent and improvement made within the spirit and principles in the present invention etc. are limited, all should be included
Within protection scope of the present invention.
Claims (10)
1. a kind of many object data exchange methods based on RF identification, it is characterised in that methods described comprises the steps：
S1, the RFID tag for carrying out data exchange will be needed to be set to state to be identified, and its internal counter is set to into 0；
The RFID tag at least two for needing to carry out data exchange；
S2, if the RFID tag in state to be identified, then it is all in state to be identified and internal counter is 0
RFID tag to read write line sends identification code；
If the number of the identification code that S3, the read write line are received is more than 1, to all RFID marks in state to be identified
Sign and issue to send and unsuccessfully order；If the number of the identification code that the read write line is received is 1, S7 is gone to step；
If S4, to receive the internal counter of the RFID tag unsuccessfully ordered not be 0, the count internal of the RFID tag
Device adds 1；If the internal counter for receiving the RFID tag unsuccessfully ordered is 0, it is random that the RFID tag produces first
Number or the second random number；
If the random number that S5, the RFID tag are produced is the first random number, the RFID tag of the first random number is produced
Internal counter remains 0, and again to read write line transmission identification code, and go to step S3；If the RFID tag is produced
Random number be the second random number, then the internal counter for producing the RFID tag of the second random number plus 1, and goes to step S6；
If the random number that S6, all RFID tags are produced is the second random number, read write line is to all in waiting to know
The RFID tag of other state sends success command, the inside meter of the RFID tag of all states to be identified for receiving success command
Number device subtracts 1, and goes to step S2；
If S7, the read write line are not properly received the identification code of the RFID tag, the read write line sends a weight
Say the word, the RFID tag to read write line sends identification code, and goes to step S7；If the read write line has correctly received described
The identification code of RFID tag, then send the data exchange command comprising the identification code, and the RFID tag is to the number
After according to exchange command, data exchange is carried out with the read write line into data exchange state, the RFID after the completion of data exchange
Tag update is to recognize state；The read write line sends success command, all states to be identified for receiving success command
The internal counter of RFID tag subtracts 1；
If the internal counter of S8, only one of which RFID tag is equal to 1 and returns response, S7 is gone to step；Otherwise go to step
S3。
2. many object data exchange methods of RF identification are based on as claimed in claim 1, it is characterised in that its feature exists
In if the number of times of read write line transmission repeating transmission order goes to step S2 more than given threshold.
3. many object data exchange methods of RF identification are based on as claimed in claim 1 or 2, it is characterised in that described to set
The span for determining threshold value is 3-10.
4. many object data exchange methods of RF identification are based on as claimed in claim 1 or 2, it is characterised in that the step
To read data command, the data exchange is the read write line from the RFID tag receive data to data exchange command in rapid S7
According to.
5. many object data exchange methods of RF identification are based on as claimed in claim 1 or 2, it is characterised in that the step
To write data command, the data exchange is that the read write line writes number to the RFID tag to data exchange command in rapid S7
According to.
6. many object data exchange methods of RF identification are based on as claimed in claim 1 or 2, it is characterised in that described
The identification code of RFID tag is unique electronic code that the RFID tag has.
7. many object data exchange methods based on RF identification as claimed in claim 1 or 2, it is characterised in that described the
One random number is 0, and second random number is 1.
8. many object data exchange methods based on RF identification as claimed in claim 1 or 2, it is characterised in that described the
One random number is 1, and second random number is 0.
9. many object data exchange methods of RF identification are based on as claimed in claim 1 or 2, it is characterised in that described
RFID tag is encoded using EPC.
10. many object data exchange methods of RF identification are based on as claimed in claim 9, it is characterised in that the EPC is compiled
The information of code includes：Production firm's code name, client's code name, species numbering and serial number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201611188898.5A CN106650535A (en) | 2016-12-21 | 2016-12-21 | Multi-object data exchange method based on radio frequency identification |
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| CN201611188898.5A CN106650535A (en) | 2016-12-21 | 2016-12-21 | Multi-object data exchange method based on radio frequency identification |
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| CN201611188898.5A Pending CN106650535A (en) | 2016-12-21 | 2016-12-21 | Multi-object data exchange method based on radio frequency identification |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5550547A (en) * | 1994-09-12 | 1996-08-27 | International Business Machines Corporation | Multiple item radio frequency tag identification protocol |
| US20070176751A1 (en) * | 1994-09-09 | 2007-08-02 | Cesar Christian L | Multiple Item Radio Frequency Tag Identification Protocol |
| CN101136053A (en) * | 2006-10-11 | 2008-03-05 | 中兴通讯股份有限公司 | Multiple labels anti-collision method used for radio frequency recognizing |
| CN101430753A (en) * | 2007-11-08 | 2009-05-13 | 中兴通讯股份有限公司 | Label anti-collision method for radio frequency recognition system |
| CN102456117A (en) * | 2010-10-18 | 2012-05-16 | 上海复莱信息技术有限公司 | Multi-tag radio-frequency identification anti-collision algorithm |
-
2016
- 2016-12-21 CN CN201611188898.5A patent/CN106650535A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070176751A1 (en) * | 1994-09-09 | 2007-08-02 | Cesar Christian L | Multiple Item Radio Frequency Tag Identification Protocol |
| US5550547A (en) * | 1994-09-12 | 1996-08-27 | International Business Machines Corporation | Multiple item radio frequency tag identification protocol |
| CN101136053A (en) * | 2006-10-11 | 2008-03-05 | 中兴通讯股份有限公司 | Multiple labels anti-collision method used for radio frequency recognizing |
| CN101430753A (en) * | 2007-11-08 | 2009-05-13 | 中兴通讯股份有限公司 | Label anti-collision method for radio frequency recognition system |
| CN102456117A (en) * | 2010-10-18 | 2012-05-16 | 上海复莱信息技术有限公司 | Multi-tag radio-frequency identification anti-collision algorithm |
Non-Patent Citations (1)
| Title |
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