CN109145664A - A method of it improving UHF reader multi-tag and distinguishes ability - Google Patents
A method of it improving UHF reader multi-tag and distinguishes ability Download PDFInfo
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- CN109145664A CN109145664A CN201810947024.6A CN201810947024A CN109145664A CN 109145664 A CN109145664 A CN 109145664A CN 201810947024 A CN201810947024 A CN 201810947024A CN 109145664 A CN109145664 A CN 109145664A
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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.
- G06K7/10079—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. the collision being resolved in the spatial domain, e.g. temporary shields for blindfolding the interrogator in specific directions
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Abstract
The invention discloses a kind of methods of raising UHF reader multi-tag recognition ability, comprising the following steps: label reading identification process S1, is divided into multiple recognition cycles, each recognition cycle is mutually indepedent, not by the interference of front and back recognition cycle content；S2, in each recognition cycle, design four-wheel is made an inventory subcycle, then makes an inventory in subcycle in each round, and design the quick counting period and stable is twice made an inventory the period twice.The present invention was made an inventory in single in the period, and the case where there are skips is allowed to improve the serious forgiveness that label is read；Simultaneously in such a way that combination is made an inventory, complete label information can be read in whole cycle；Label information can be quickly distinguished under conditions of ensuring tag readable degree integrality；The recognition ability that multi-tag is made an inventory can not be influenced under ambient noise serious situation；Recognition ability of the reader in multi-tag is effectively raised, the influence of environment and tag performance to recognition label effect is reduced.
Description
Technical field
The invention belongs to technical field of RFID, in particular to a kind of UHF reader multi-tag that improves distinguishes ability
Method.
Background technique
Wave radio frequency identification (UHF RFID) technology is state-of-the-art forth generation automatic identification technology in the world, is in recent years just
Just start the new technology risen and promoted and applied rapidly, it has, and identification distance is remote, recognition accuracy is high, recognition speed
Fastly, strong antijamming capability, long service life, the features such as nonmetallic materials can be penetrated, the features such as operation strategies are wide.It is to realize
It is digitlization, information-based and the characteristics such as the attribute to object, state, number carry out a kind of brand-new pipe that automatic collection is released
Reason means can be widely applied to the identity automatic identification of personnel, animal, article etc..It is penetrated in Radio Frequency Identification Technology in design
Frequency identifies that the advanced degree for scheme of eating dishes without rice or wine determines the superiority and inferiority degree of radio frequency identification efficiency.
Currently, mostly using single, single-rate, the anticollision scheme of solid size type in conceptual design of eating dishes without rice or wine, though
So can theoretically improve the recognition ability of multi-tag, but due to the individuation difference of label, ambient noise it is uncertain
Property, can inevitably there be the case where skip, misread.It eventually leads to when identifying multiple labels, it may appear that label of making an inventory careless omission has a
Other label is not distinguished always, is eventually led to skip and is failed to report.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind to ensure tag readable degree integrality
Under the conditions of, quickly distinguish label information；Outgoing label information can be distinguished to the greatest extent under the poor environment of tag performance
The method for improving UHF reader multi-tag recognition ability.
The purpose of the present invention is achieved through the following technical solutions: a kind of raising UHF reader multi-tag recognition energy
The method of power, comprising the following steps:
S1, label reading identification process is divided into multiple recognition cycles, each recognition cycle is mutually indepedent, not by front and back
The interference of recognition cycle content；
S2, in each recognition cycle, design four-wheel is made an inventory subcycle, then make an inventory in subcycle in each round, design
It the quick counting period and stable twice makes an inventory the period twice.
Further, make an inventory in the period in each quick counting period and stablizing, be respectively adopted label anti-collision algorithm and
The control interface method for parameter of making an inventory carries out label and makes an inventory；The control interface of the parameter of making an inventory is arranged are as follows: the quick counting period
Parameter configuration be label coding be FM0, chip rate 640K；The parameter configuration for stablizing the period of making an inventory is label coding M8,
Chip rate is 80K.
The beneficial effects of the present invention are: the present invention makes an inventory in the period in single, allow there are the case where skip to improve label
The serious forgiveness of reading；Simultaneously in such a way that combination is made an inventory, complete label information can be read in whole cycle；It can be
Under conditions of ensuring tag readable degree integrality, label information is quickly distinguished；It can not be influenced under ambient noise serious situation
The recognition ability that multi-tag is made an inventory；Outgoing label information can be distinguished to the greatest extent under the poor environment of tag performance；Effectively
Improve recognition ability of the reader in multi-tag, reduce environment and tag performance to the shadow of recognition label effect
It rings, realizes the reading of multi-tag to the greatest extent.
Detailed description of the invention
Fig. 1 makes an inventory for label of the invention and distinguishes process schematic；
Fig. 2 is a recognition cycle flow chart of the invention；
Fig. 3 is recognition cycle parameter setting figure of the invention.
Specific embodiment
Technical solution of the present invention is further illustrated with reference to the accompanying drawing.
A method of it improving UHF reader multi-tag and distinguishes ability, comprising the following steps:
S1, label reading identification process is divided into multiple recognition cycles, each recognition cycle is mutually indepedent, not by front and back
The interference of recognition cycle content, as shown in Figure 1, label reading identification process is divided into N number of period；
S2, in each recognition cycle, design four-wheel is made an inventory subcycle, then make an inventory in subcycle in each round, design
Twice the quick counting period and it is stable twice make an inventory the period, as shown in Figure 2.In the wheel of recognition cycle 1, devises four-wheel and make an inventory son
The design in period, each round subcycle of making an inventory can also be an independent identification process, not by the interference of other subcycles.?
One wheel was made an inventory in the period, devises the quick counting period twice and stable twice makes an inventory the period.
The quick counting period: the quick counting period can quickly identify label, and making an inventory, high-efficient, speed of making an inventory is fast, still
Correspondingly, the quick counting period may be affected by environment, stability is not high, and the energy provided to label is low, to mark
The requirement of chemotaxis energy is high, is finally easy to appear the possibility that label skip is failed to report.
Stabilization is made an inventory the period: the stable period of making an inventory is capable of providing the higher energy of label, and the anti-interference energy of coding is strong,
Ambient noise is big, in the case where weak output signal, still there is good recognition ability.But it is long, inefficient to there is the time of making an inventory
Defect.
The present invention combines two kinds of inventory count schemes, first passes through the mode of quick counting, timely returns label information
To application program.It is made an inventory the making an inventory of subcycle by two-wheeled, the label that distinguish in region at least 90% can be returned into application
Program；For remaining 10% label, may cause not having the limitation due to region, tag performance locating for label etc.
It can timely distinguish and arrive in the period of making an inventory of preceding two-wheeled.By stablizing the design in period of making an inventory, can be provided more to label
Stable environment-identification, more sufficient energy have not been able to the label of timely return information before, can timely return to label letter
Breath.
In this way, effectively the advantage item complementation of two kinds of Stocktaking modes can be combined, is most started making an inventory, energy
It is enough timely to report label information.Meanwhile by stablizing the making an inventory of period of making an inventory, it can report label information is errorless, have
The recognition ability for improving reader multi-tag of effect.
Further, make an inventory in the period in each quick counting period and stablizing, be respectively adopted label anti-collision algorithm and
The control interface method for parameter of making an inventory carries out label and makes an inventory, and label anti-collision algorithm of making an inventory can be realized in a command cycle
Multi-tag signal anticollision processing；The instruction ginseng of different subcycles of making an inventory may be implemented in the control interface method for parameter of making an inventory
Number configuration, realizes modular design scheme, convenient for the transplanting of design, calls.The control interface of the parameter of making an inventory is arranged are as follows:
The parameter configuration in quick counting period is that label coding is FM0, chip rate 640K；Stablizing the parameter configuration in period of making an inventory is
Label coding M8, chip rate 80K.In inventory procedure, selection type of coding is FM0, chip rate 640K, effect of making an inventory
Rate highest, it is fastest, but stability is not high, and it is serious by environmental disturbances, it is easy the label information slipped through the net；Type of coding
For M8, chip rate 80K, the stability made an inventory is best, and in extraneous noisy situation, recognition that can also be stable is to marking
The information of label, the tag energy foot provided, but disadvantage is exactly to distinguish inefficient, speed is slow.
Label coding FM0 is set here, and chip rate is that 640K is configured as quick counting cycle parameter；Label coding
M8, chip rate are 80K as cycle parameter of making an inventory is stablized and configure.
As shown in figure 3, the symbol speed that the label interaction in setting quick counting period 1 is encoded to FM0, rate of interaction is 640K
Rate, tag indicator position are A；The symbol speed that label interaction is encoded to FM0, rate of interaction is 640K is arranged in the quick counting period 2
Rate, tag indicator position are B；Stablize make an inventory the period 3 be arranged label interaction be encoded to M8, rate of interaction be 80K chip rate,
Mark position is A；Stablize the setting of period 4 label interaction of making an inventory and is encoded to M8, rate of interaction as chip rate, the label mark of 80K
Will position is B.
The fault-tolerant ability made an inventory is effectively raised than single element, the Stocktaking mode of solid size rate by this design.
It makes an inventory in the period in single, can allow for the case where there are skips.Meanwhile in such a way that combination is made an inventory, it can be ensured that one
In the secondary recognition period, multi-tag recognition ability is improved, reduces the influence of environment and tag performance to recognition label effect, it is maximum
The reading of the realization multi-tag of degree.
Those of ordinary skill in the art will understand that the embodiments described herein, which is to help reader, understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such specific embodiments and embodiments.This field
Those of ordinary skill disclosed the technical disclosures can make according to the present invention and various not depart from the other each of essence of the invention
The specific variations and combinations of kind, these variations and combinations are still within the scope of the present invention.
Claims (2)
1. a kind of method for improving UHF reader multi-tag recognition ability, which comprises the following steps:
S1, label reading identification process is divided into multiple recognition cycles, each recognition cycle is mutually indepedent, is not identified by front and back
The interference of periodic content；
S2, in each recognition cycle, design four-wheel is made an inventory subcycle, then makes an inventory in subcycle in each round, design is twice
It the quick counting period and stable twice makes an inventory the period.
2. a kind of method for improving UHF reader multi-tag recognition ability according to claim 1, which is characterized in that
In each quick counting period and stable period of making an inventory, the control interface side of label anti-collision algorithm and parameter of making an inventory is respectively adopted
Method carries out label and makes an inventory；The control interface of the parameter of making an inventory is arranged are as follows: the parameter configuration in quick counting period is label coding
For FM0, chip rate 640K；The parameter configuration for stablizing the period of making an inventory is label coding M8, chip rate 80K.
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