CN103761548B - A kind of active RFID tag information interaction method - Google Patents
A kind of active RFID tag information interaction method Download PDFInfo
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- CN103761548B CN103761548B CN201310751137.6A CN201310751137A CN103761548B CN 103761548 B CN103761548 B CN 103761548B CN 201310751137 A CN201310751137 A CN 201310751137A CN 103761548 B CN103761548 B CN 103761548B
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Abstract
The invention discloses a kind of active RFID tag information interaction method, the method specifically includes that fixing active RFID tag periodically sends broadcast frame after initializing, and waits reply；Mobile active RFID tag is when receiving broadcast frame, and the content analyzing broadcast frame judges whether have communication requirement, if being by replying；If fixing active RFID tag is to replying the frame broadcasted, then enter point-to-point P2P communication pattern；Mobile active RFID tag receives P2P Frame, and replys P2P Frame, until completing with this fixing active RFID tag communication.The method sets up correspondence by broadcast frame, and P2P Frame sets up data transmission relations, effectively can not only must meet the requirement of communication protocol, moreover it is possible to extensive must be applied in the middle of other communication protocols.
Description
Technical field
The invention belongs to wireless communication technology field, relate to a kind of active RFID tag information interaction method and system, specifically one
Plant and be applied to the active RFID tag information interaction method of wireless mobile environment and the design of system.
Background technology
RFID(RF identification) be a kind of wireless communication system, be made up of two basic devices, read write line (or reader) and
A lot of transponders (or label), are aided with antenna, perimeter network, middleware, management system simultaneously, thus form complete RFID
Application system.Active RFID, is also called active rfid (Active tag), carries out according to the difference of electronic label with power mode
Electronic tag one type divided, active RFID tag is built with battery.
As long as RFID label tag just can accurately be read in being placed in the electromagnetic field that reading equipment is formed, it is more suitable for and various automatizatioies
Processing equipment with the use of, reduce simultaneously even get rid of bring because of manual intervention data acquisition human resources, efficiency reduce
With generation mistake and the cost of error correction；RFID can carry out the reading of thousands of times each second, can process many labels, efficiently simultaneously
And pin-point accuracy, thus enable the enterprise to neither reducing working performance, on the premise of the most not increasing management cost, significantly carry
High management fineness, allows whole operation process real-time transparent, creates huge economic benefit.The recognition of RFID label tag, it is not necessary to
To be visually visible as premise, because it does not relies on visible ray, thus the adverse circumstances that cannot be able to adapt at those barcode technologies
Lower use, such as high dust pollution, field etc., so can expand the range of application of automatic identification technology further.
The process that in wireless network, the read write line in the corresponding region of label in a regional extent interacts is generally: mark
Sign the signal returning a certain frequency after entering magnetic field, after read write line reads information and decodes, deliver to CIS and carry out relevant
Data process.In communication process, read write line can carry out information to label, and controls accordingly, needed for transmission
Information or enter sleep state etc., interacts by communication protocol therebetween, and protocol conventions includes data form, together
The problems such as step mode, transfer rate, transfer step, inspection error correcting system and control character definition are made that Uniform provisions, communication
Both sides must observe jointly.
But existing agreement such as ISO/IEC18000-4, ISO/IEC18000-7 etc. are not all specifically designed for the frame of active mobile tag
Form is defined in detail so that RFID label tag once position there occurs change, will be unable to carry out good communication with read write line,
More cannot utilize the active label in moving well, significantly limit the range of active electronic label.This means very
Multi-tag, after coming into operation, can only carry out information until running down of battery in original place, or loses after moving out read write line detection range
Go liaison, cause the wasting of resources, also make the range of application that can come into operation very limited, it is impossible to for such as mobile vehicle
The application scenarios such as location.
Summary of the invention
The invention aims to solve in prior art active RFID in active RFID tag information interaction method make after moving
One-tenth cannot between label interactive communication shortcoming and propose a kind of active RFID tag information be applicable to wireless mobile environment hand over
Method mutually.
The technical scheme is that a kind of active RFID tag information interaction method, specifically include:
After S1, fixing active RFID tag initialization, the mobile active RFID tag in its coverage periodically sends broadcast
Frame, and etc. the reply of active RFID tag to be moved；
S2, mobile active RFID tag enter after initializing and intercept state, are receiving the wide of fixing active RFID tag transmission
When broadcasting frame, the content analyzing broadcast frame judges whether fixing active RFID tag has communication requirement, if then wide to sending this
The fixing active RFID tag broadcasting frame is replied, and otherwise returns to intercept state；
If the fixing active RFID tag of S3 replys the frame of broadcast to mobile active RFID tag, then move active with this
RFID label tag enters point-to-point P2P communication pattern, and moves active RFID tag transmission P2P Frame to this, otherwise continues
Periodically send broadcast frame；
S4, mobile active RFID tag receive P2P Frame, and reply corresponding P2P Frame, until being fixed with this
Source RFID label tag communication completes.
Further, described step S1 is fixed active RFID tag transmission broadcast frame include: protocol number Protocol ID, mark
Label state Tag status, packet length Packet length, fixed labels factory serial number Location tag manufacture ID, fixing
Tag serial number Location tag Serial number, command code Command code, command parameter Command arguments,
Check code CRC.
Further, the broadcast frame that in described step S2, mobile active RFID tag is replied includes: protocol number Protocol ID,
Tag state Tag status, packet length Packet length, fixed labels factory serial number Location tag manufacture ID, solid
Determine tag serial number Location tag Serial number, mobile tag factory serial number Moving tag manufacture ID, mobile mark
Sign serial number Moving tag Serial number, command code Command code, response data Response data, check code
CRC。
Further, the P2P Frame fixing active RFID tag transmission in described step S3 includes: protocol number Protocol ID,
Tag state Tag status, packet length Packet length, mobile tag factory serial number Moving tag manufacture ID, movement
Tag serial number Moving tag Serial number, fixed labels factory serial number Location tag manufacture ID, fixed labels
Serial number Location tag Serial number, command code Command code, command parameter Command arguments, school
Test a yard CRC.
Further, the P2P Frame that in described step S4, mobile active RFID tag is replied includes: protocol number Protocol ID,
Tag state Tag status, packet length Packet length, fixed labels factory serial number Location tag manufacture ID, solid
Determine tag serial number Location tag Serial number, mobile tag factory serial number Moving tag manufacture ID, mobile mark
Sign serial number Moving tag Serial number, command code Command code, response data Response data, check code
CRC。
Further, described step S1 is fixed active RFID tag and sends mobile active RFID in broadcast frame, described step S2
The broadcast frame of tag return, described step S3 are fixed in the P2P Frame of active RFID tag transmission, described step S4
The P2P Frame that mobile active RFID tag is replied also includes: identification code Recognition, and described identification code is sent out for identifying
The person of sending and receiver's identity.
The invention has the beneficial effects as follows: one active RFID tag information interaction method of the present invention is fixed active RFID tag and
Mobile active RFID tag sets up correspondence by broadcast frame, and P2P Frame sets up data transmission relations, and to solid
Determine broadcast frame, P2P Frame and the broadcast frame of mobile active RFID tag reply, P2P data that active RFID tag sends
The form of frame is defined, and effectively can not only must meet the requirement of communication protocol, moreover it is possible to extensive must be applied to other communication protocols
In the middle of view.
Accompanying drawing explanation
Fig. 1 is the FB(flow block) of a kind of active RFID tag information interaction method of the embodiment of the present invention；
Fig. 2 is to fix active RFID tag in data interaction in embodiment of the present invention one active RFID tag information interaction method
During flow chart；
Fig. 3 is to move active RFID tag in embodiment of the present invention one active RFID tag information interaction method in data interaction
During flow chart.
Detailed description of the invention
The invention will be further elaborated with specific embodiment below in conjunction with the accompanying drawings.
Being illustrated in figure 1 the FB(flow block) of a kind of active RFID tag information interaction method of the embodiment of the present invention, it specifically includes:
After S1, fixing active RFID tag initialization, the mobile active RFID tag in its coverage periodically sends broadcast
Frame, and etc. the reply of active RFID tag to be moved；
S2, mobile active RFID tag enter after initializing and intercept state, are receiving the wide of fixing active RFID tag transmission
When broadcasting frame, the content analyzing broadcast frame judges whether fixing active RFID tag has communication requirement, if then wide to sending this
The fixing active RFID tag broadcasting frame is replied, and otherwise returns to intercept state；
If the fixing active RFID tag of S3 replys the frame of broadcast to mobile active RFID tag, then move active with this
RFID label tag enters point-to-point P2P communication pattern, and moves active RFID tag transmission P2P Frame to this, otherwise continues
Periodically send broadcast frame；
S4, mobile active RFID tag receive P2P Frame, and reply corresponding P2P Frame, until being fixed with this
Source RFID label tag communication completes.
Wherein, as shown in table 1 for described step S1 is fixed the form 1 of active RFID tag transmission broadcast frame, specifically include:
Protocol number Protocol ID, tag state Tag status, packet length Packet length, fixed labels factory serial number Location tag
Manufacture ID, fixed labels serial number Location tag Serial number, command code Command code, order ginseng
Number Command arguments, check code CRC.
The form 1 of table 1-broadcast frame
Wherein, 1B represents a byte, and certainly, in actual applicable cases, the byte length of each field can make phase
The adjustment answered is to meet communication requirement.In order to identify the identity of the fixing active RFID tag of broadcast frame further, at broadcast frame
Form in further comprises identification code Recognition because in actual active RFID communication system, active except existing
Outside RFID label tag is with the data interaction of mobile active RFID tag, also include read write line and fixing active RFID tag, read-write
Data interaction between device and mobile active RFID tag, so in some cases, when a label receives a frame,
It can produce cannot judge it is from read write line or label, if the frame that label cannot be distinguished by receiving is from which object, and will
Content frame cannot be understood by byte.According to this situation, the present invention program designs one 8 bit of increase after protocol fields
Field identification code Recognition, be used for identifying sender and recipient's identity, form is as follows:
0th to the 3rd bit retains, and the 4th to the 7th bit is with 0, and 1 represents transmission and recipient's identity successively, is about set to: 0000
Representing that read write line sends to read write line, 0001 represents that read write line sends to fixed labels, and 0010 represents that read write line sends to mobile mark
Signing, 0011 represents that fixed labels sends to read write line, and 0100 represents that fixed labels sends to fixed labels, and 0101 represents fixing
Label sends to mobile tag, and 0110 represents that mobile tag sends to read write line, and 0111 represents that mobile tag sends to fixed labels,
1000 represent that mobile tag sends to mobile tag, and 1001 to 1111 temporarily retain.The most concrete setting means can also root
The situation on border is adjusted factually, then the form 2 that fixing active RFID tag sends broadcast frame is as shown in table 2:
The form 2 of table 2-broadcast frame
It is the form 1 of the broadcast frame that mobile active RFID tag is replied in described step S2 as shown in table 3, specifically includes: association
View Protocol ID, tag state Tag status, packet length Packet length, fixed labels factory serial number Location tag
Manufacture ID, fixed labels serial number Location tag Serial number, mobile tag factory serial number Moving tag
Manufacture ID, mobile tag serial number Moving tag Serial number, command code Command code, response data
Response data, check code CRC.
Table 3-moves active RFID tag and replys the form 1 of broadcast frame
Same, the form 2 of the broadcast frame adding the mobile active RFID tag reply of identification code is as shown in table 4:
Table 4-moves active RFID tag and replys the form 2 of broadcast frame
As shown in table 5 for described step S3 is fixed the form 1 of the P2P Frame that active RFID tag sends, specifically include:
Protocol number Protocol ID, tag state Tag status, packet length Packet length, mobile tag factory serial number Moving tag
Manufacture ID, mobile tag serial number Moving tag Serial number, fixed labels factory serial number Location tag
Manufacture ID, fixed labels serial number Location tag Serial number, command code Command code, order ginseng
Number Command arguments, check code CRC.
The form 1 of table 5-P2P Frame
Same, the form 2 of the P2P Frame adding identification code is as shown in table 6:
The form 2 of table 6-P2P Frame
It is the form 1 of the P2P Frame that mobile active RFID tag is replied in described step S4 as shown in table 7, specifically includes:
Protocol number Protocol ID, tag state Tag status, packet length Packet length, fixed labels factory serial number Location tag
Manufacture ID, fixed labels serial number Location tag Serial number, mobile tag factory serial number Moving tag
Manufacture ID, mobile tag serial number Moving tag Serial number, command code Command code, response data
Response data, check code CRC.
Table 7-moves the form 1 of the P2P Frame that active RFID tag is replied
Same, the form 2 of the P2P Frame adding the mobile active RFID tag reply of identification code is as shown in table 8:
Table 8-moves the form 2 of the P2P Frame that active RFID tag is replied
In order to skilled artisans appreciate that and implement technical solution of the present invention, below by respectively to read write line and vehicle-mounted shifting
The work process of dynamic active RFID tag is described in detail:
It is illustrated in figure 2 fixing active RFID tag flow chart in data exchange process, for fixing active RFID tag,
Periodically start to send broadcast frame after initial work, to detect in its communication range whether with the presence of other mobile tags and send
Communicating requirement, if not receiving response, then continues periodic broadcast, if receiving mobile active RFID tag to reply the frame of broadcast,
Then enter point-to-point P2P communication mode, move active RFID tag to target and send P2P Frame, mobile active RFID
Corresponding P2P format data frame then replied by label, until communication task completes.
It is illustrated in figure 3 mobile active RFID tag flow chart in data exchange process, for mobile active RFID tag,
In moving process, the state of intercepting it is in, to detect in its communication range whether with the presence of fixed labels and send after initial work
The broadcast frame of band order, if not receiving response, then continues to intercept, if receiving the frame of mobile active RFID tag broadcast,
And this broadcast frame is analyzed, if this broadcast frame requires that moving active label with this communicates, then fix active to this
Tag return broadcast frame, rear entrance then enters point-to-point P2P communication mode, and fixed labels can start to the active mobile tag of target
Sending P2P Frame, mobile active RFID tag then replys corresponding P2P format data frame, until communication task completes.
Those of ordinary skill in the art is it will be appreciated that embodiment described here is to aid in the former of the reader understanding present invention
Reason, it should be understood that the protection domain of invention is not limited to such special statement and embodiment.Every do according to foregoing description
Go out various possible equivalent or change, be all considered to belong to the scope of the claims of the present invention.
Claims (5)
1. an active RFID tag information interaction method, it is characterised in that specifically include:
After S1, fixing active RFID tag initialization, the mobile active RFID tag in its coverage periodically sends broadcast
Frame, and etc. the reply of active RFID tag to be moved；
S2, mobile active RFID tag enter after initializing and intercept state, are receiving the wide of fixing active RFID tag transmission
When broadcasting frame, the content analyzing broadcast frame judges whether fixing active RFID tag has communication requirement, if then wide to sending this
The fixing active RFID tag broadcasting frame is replied, and otherwise returns to intercept state；
If the fixing active RFID tag of S3 replys the frame of broadcast to mobile active RFID tag, then move active with this
RFID label tag enters point-to-point P2P communication pattern, and moves active RFID tag transmission P2P Frame to this, otherwise continues
Periodically send broadcast frame；
S4, mobile active RFID tag receive P2P Frame, and reply corresponding P2P Frame, until being fixed with this
Source RFID label tag communication completes；
Described step S1 is fixed mobile active RFID tag in active RFID tag transmission broadcast frame, described step S2 return
Fixing in multiple broadcast frame, described step S3 to move in the P2P Frame of active RFID tag transmission, described step S4 has
The P2P Frame that source RFID label tag is replied also includes: the field identification code Recognition of 8 bits, is used for identifying sender
With recipient's identity；
The field identification code Recognition of described 8 bits, the 0th to the 3rd bit retains, and the 4th to the 7th bit is with 0,1
Representing successively and send and recipient's identity, be about set to: 0000 represents that read write line sends to read write line, 0001 represents that read write line sends
To fixed labels, 0010 represents that read write line sends to mobile tag, and 0011 represents that fixed labels sends to read write line, 0100 table
Showing that fixed labels sends to fixed labels, 0101 represents that fixed labels sends to mobile tag, and 0110 represents that mobile tag sends extremely
Read write line, 0111 represents that mobile tag sends to fixed labels, and 1000 represent that mobile tag sends to mobile tag.
2. a kind of active RFID tag information interaction method as claimed in claim 1, it is characterised in that described step S1
In fix active RFID tag send broadcast frame include: protocol number Protocol ID, tag state Tag status, packet length Packet
Length, fixed labels factory serial number Location tag manufacture ID, fixed labels serial number Location tag Serial
Number, command code Command code, command parameter Command arguments, check code CRC.
3. a kind of active RFID tag information interaction method as claimed in claim 1, it is characterised in that described step S2
The broadcast frame that middle mobile active RFID tag is replied includes: protocol number Protocol ID, tag state Tag status, packet length
Packet length, fixed labels factory serial number Location tag manufacture ID, fixed labels serial number Location tag Serial
Number, mobile tag factory serial number Moving tag manufacture ID, mobile tag serial number Moving tag Serial
Number, command code Command code, response data Response data, check code CRC.
4. a kind of active RFID tag information interaction method as claimed in claim 1, it is characterised in that described step S3
In fix active RFID tag send P2P Frame include: protocol number Protocol ID, tag state Tag status, bag
Length Packet length, mobile tag factory serial number Moving tag manufacture ID, mobile tag serial number Moving tag
Serial number, fixed labels factory serial number Location tag manufacture ID, fixed labels serial number Location tag Serial
Number, command code Command code, command parameter Command arguments, check code CRC.
5. a kind of active RFID tag information interaction method as claimed in claim 1, it is characterised in that described step S4
The P2P Frame that middle mobile active RFID tag is replied includes: protocol number Protocol ID, tag state Tag status, bag
Length Packet length, fixed labels factory serial number Location tag manufacture ID, fixed labels serial number Location tag
Serial number, mobile tag factory serial number Moving tag manufacture ID, mobile tag serial number Moving tag Serial
Number, command code Command code, response data Response data, check code CRC.
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| CN103761548B true CN103761548B (en) | 2016-08-24 |
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| US5686902A (en) * | 1990-06-15 | 1997-11-11 | Texas Instruments Incorporated | Communication system for communicating with tags |
| CN101051356A (en) * | 2007-05-16 | 2007-10-10 | 上海华龙信息技术开发中心 | Novel active radio frequency identifying system and its operationn method |
| CN101794369A (en) * | 2009-02-02 | 2010-08-04 | 釜山国立大学校产学协力园 | Active RFID system for port logistics using multi-hop communication and communication method of the same |
| CN102393896A (en) * | 2011-07-11 | 2012-03-28 | 成都西谷曙光数字技术有限公司 | Simple and accurate radio frequency positioning system and method |
| CN103093170A (en) * | 2013-01-16 | 2013-05-08 | 深圳市中兴长天信息技术有限公司 | Electronic tag fast recognition method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100936893B1 (en) * | 2008-01-04 | 2010-01-14 | 중앙대학교 산학협력단 | Method for identification of tags and anti-collision, and RFID tag using the same |
-
2013
- 2013-12-31 CN CN201310751137.6A patent/CN103761548B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5686902A (en) * | 1990-06-15 | 1997-11-11 | Texas Instruments Incorporated | Communication system for communicating with tags |
| CN101051356A (en) * | 2007-05-16 | 2007-10-10 | 上海华龙信息技术开发中心 | Novel active radio frequency identifying system and its operationn method |
| CN101794369A (en) * | 2009-02-02 | 2010-08-04 | 釜山国立大学校产学协力园 | Active RFID system for port logistics using multi-hop communication and communication method of the same |
| CN102393896A (en) * | 2011-07-11 | 2012-03-28 | 成都西谷曙光数字技术有限公司 | Simple and accurate radio frequency positioning system and method |
| CN103093170A (en) * | 2013-01-16 | 2013-05-08 | 深圳市中兴长天信息技术有限公司 | Electronic tag fast recognition method and device |
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