CN102073836A - Method and device for determining label flowing direction - Google Patents
Method and device for determining label flowing direction Download PDFInfo
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- CN102073836A CN102073836A CN2009102286549A CN200910228654A CN102073836A CN 102073836 A CN102073836 A CN 102073836A CN 2009102286549 A CN2009102286549 A CN 2009102286549A CN 200910228654 A CN200910228654 A CN 200910228654A CN 102073836 A CN102073836 A CN 102073836A
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Abstract
The invention provides a method and a device for determining a label flowing direction, which are applied to a radio frequency identification system comprising one or more readers, a label, a first antenna and a second antenna. The first antenna and the second antenna are connected to the one or more readers respectively, and the method for determining the label flowing direction comprises the following steps of: acquiring a first entering moment when the label enters a coverage area of the first antenna and a first departure moment when the label departures from the coverage area of the first antenna; judging whether a second entering moment when the label enters the coverage area of the second antenna and a second departure moment when the label departures from the coverage area of the second antenna are stored; and if the second entering moment and the second departure moment are stored, determining the flowing direction of the label according to the first entering moment and the second departure moment. Through the method and the device, the problem that the flowing direction of the label is needed to be judged through special sensing equipment or manual operation in the prior art is solved, resources are saved, and the technology gap in the field of radio frequency identification devices (RFID) is filled.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of definite method and device of label flow direction.
Background technology
Radio-frequency (RF) identification (Radio Frequency Identification abbreviates RFID as) technology is a kind of contactless automatic identification technology.System based on RFID mainly comprises reader and electronic tag (being designated hereinafter simply as label), and wherein, reader is finishing alternately by reader and label to the identification of label.Concrete identifying operation is: reader sends order by radiofrequency signal to label, and correspondingly, label is realized the identification of reader to label by the order of radiofrequency signal response reader with this.
At present, in system, judge that the flow direction of label has very important use meaning based on RFID.For example, for company, know the turnover (that is, label flow) of personnel's (these personnel can be regarded as label) by gate inhibition's (this gate inhibition is connected with reader), this effective management for company plays a very important role.Owing to can only pass through special sensing apparatus at present, perhaps judge flowing of label by manual operation, this has increased unnecessary expense, has wasted manpower and materials.
Summary of the invention
Need judge the waste problem of resource that the flow direction of label causes by special sensing apparatus or by manual operation at above-mentioned, the present invention aims to provide a kind of definite scheme of improved label flow direction, one of to address the above problem at least.
To achieve these goals, according to an aspect of the present invention, a kind of definite method of label flow direction is provided, be applied to comprise the radio-frequency recognition system of one or more readers, label, first antenna and second antenna, wherein, first antenna and second antenna are connected to one or more readers respectively.
Definite method according to label flow direction of the present invention comprises: obtain first first departure time that enters constantly and leave the overlay area of first antenna that label enters the overlay area of first antenna; Judged whether to preserve second second departure time that enters constantly and leave the overlay area of second antenna that label enters the overlay area of second antenna; If judged result is for being, then enter constantly and the flow direction of definite label of second departure time according to first.
Above-mentionedly enter constantly and second departure time determined that the flow direction of label comprised: calculated for first mistiming that enters between the moment and second departure time according to first; If the mistiming, determines then that the flow direction of label is from second day alignment first antenna less than preset value.
If the mistiming more than or equal to preset value, then abandons determining the flow direction of label.
In addition, if can not successfully get access to for first departure time in the given time, then abandon determining the flow direction of label.
The above-mentioned label that obtains enters the operation that first of first antenna enters constantly and comprises: obtain and preserve label and enter constantly when first of the overlay area that advance into first antenna, and delete original first and enter constantly and first departure time.
To achieve these goals, according to an aspect of the present invention, provide a kind of definite device of label flow direction.
Definite device according to label flow direction of the present invention comprises: storer is used for the departure time that enters constantly and leave the overlay area of antenna that storage tags enters the overlay area of antenna; Reader is used for reading from storer and enters constantly and the departure time; Decision device is used for determining according to entering constantly of reading of reader and departure time the flow direction of label.
Wherein, storer comprises: first storage part is used to store enter constantly and departure time corresponding with first antenna; Second storage part is used to store enter constantly and departure time corresponding with second antenna.
In addition, definite device of label flow direction also comprises: scheduler is used for reading from second storage part at reader and corresponding with second antenna enter constantly and during the departure time, decision device is dispatched.
Above-mentioned decision device also comprises: arithmetical unit, be used to calculate reader reads corresponding with first antenna enter constantly and with the mistiming of second antenna between the corresponding departure time; Comparer is used for the mistiming and first preset value are compared; Decision unit is used for the comparative result according to comparer, determines the flow direction of label, wherein, if comparative result be the mistiming less than first preset value, determine that then the flow direction of label is from second day alignment first antenna.
It is mistiming during more than or equal to preset value that above-mentioned scheduler also is used for comparative result at comparer, and decapacitation is to the scheduling of decision unit.
And above-mentioned storer also comprises: the 3rd storage part is used for storing respectively the message delivery time relevant with second antenna with first antenna; Arithmetical unit also be used to calculate the message delivery time relevant with first antenna and with the relevant message delivery time of second antenna between difference; Comparer also is used for the difference and second preset value are compared; It is difference during greater than second preset value that scheduler also is used for comparative result at comparer, and decapacitation is to the scheduling of decision unit.
By means of technique scheme one of at least, judge the flow direction of label by the mistiming that passes in and out two antennas according to label respectively, having overcome needs by special sensing apparatus or judges the problem of the flow direction of label by manual operation in the prior art, save resource, filled up a technological gap in RFID field.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the process flow diagram according to definite method of the label flow direction of the inventive method embodiment;
Fig. 2 is a scene synoptic diagram of using the embodiment of the invention;
Fig. 3 is another scene synoptic diagram of using the embodiment of the invention;
Fig. 4 is the block diagram according to definite device of the label flow direction of apparatus of the present invention embodiment;
Fig. 5 is the preferred structure block diagram according to definite device of the label flow direction of apparatus of the present invention embodiment;
Fig. 6 is another preferred structure block diagram according to definite device of the label flow direction of the embodiment of the invention.
Embodiment
Functional overview
Because the flow direction of judgement label of the prior art needs special sensing apparatus, perhaps realize by manual operation, therefore, judge certain material resources, financial resources and manpower that label flow direction needs, wasted more resource.Based on this, the invention provides a kind of definite scheme of label flow direction, be applied to comprise that in the rfid system of reader, label, antenna, wherein, antenna is connected with reader.
The embodiment of the invention is an example with two antennas, and these two antennas are corresponding mutually, are connected to reader respectively.The mistiming that the embodiment of the invention passes in and out two antennas respectively according to label is judged the flow direction of label, promptly, preserve label and enter first first departure time that enters constantly and leave first antenna of the overlay area (following the overlay area of first antenna can be abbreviated as first antenna) of first antenna, when having preserved this first departure time, first antenna triggers decision operation, at first judged whether to preserve second second departure time that enters constantly and leave second antenna of the overlay area (following the overlay area of second antenna can be abbreviated as second antenna) of second antenna, if preserved, then enter the flow direction of judging label constantly with the mistiming of second departure time according to first, particularly, in mistiming during less than the preset value of systemic presupposition, the flow direction of determining label is for from second day alignment first antenna.Than prior art, the scheme of judgement label flow direction of the present invention does not need special sensing apparatus, need not finished by manual operation yet, has saved resource.
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.Need to prove that if do not conflict, embodiment and the feature among the embodiment among the application can make up mutually.
Embodiment one
According to the embodiment of the invention, a kind of definite method of label flow direction is provided, be applied to rfid system, this rfid system comprise one or more readers, label, first antenna and with corresponding second antenna of this first antenna, wherein, first antenna and second antenna are connected to reader respectively.Fig. 1 is the process flow diagram according to definite method of the label flow direction of the embodiment of the invention, below to flow from second day alignment first antenna with label be that example describes, for example, label is leaving from the overlay area of second antenna, after entering the overlay area of first antenna, carry out following operation (step 102 is to step 106) as shown in Figure 1.
Step 102 is obtained label and is entered first departure time that first of first antenna entered constantly and left first antenna.That is, when label enters into the coverage of first antenna, mutual by reader and label, the record label enters first of first antenna and enters constantly; Similarly, when label left first antenna, the record label left first departure time of first antenna, and at this moment, first antenna triggers the operation shown in the step 104.That is to say that when label left certain antenna (for example, first antenna), when label reported the departure time, this antenna (that is first antenna) just triggered the operation shown in the step 104.
In concrete implementation process, label reports the time of label turnover antenna by the order of response reader, and the time of the turnover antenna that this reports can be kept at system side, for example, is kept in the predetermined internal memory.Concrete preservation operation comprises: when label reports when entering first of first antenna and entering constantly, System Cleaning is former to enter first departure time that first of first antenna entered constantly and left first antenna relevant for this label, that is to say, what preserve in the internal memory is that label is worked as the up-to-date moment that advances into first antenna, or preservation is that label is when the up-to-date moment that advances into first antenna and the up-to-date moment of leaving first antenna.Like this, by real-time covering and renewal, the information that is used to preserve the moment of label turnover antenna just can take less memory source.
Pass in and out the situation of second antenna for label, the situation that passes in and out first antenna with above-mentioned label is identical.Therefore, system side preserve first enter moment, first departure time, second enters the moment, second departure time, all is current up-to-date record.
Above-mentioned steps 102, what report owing to label is current is the moment of leaving first antenna, just leaves the overlay area of first antenna, therefore, triggers the described following operation of step 104 by first antenna.
Step 104 triggers first decision operation, and wherein, first decision operation has been used to judge whether to preserve label and has entered second departure time that second of second antenna entered constantly and left second antenna.If the judged result of first decision operation enters constantly and second departure time for having preserved second, then care label has left the coverage of first antenna and second antenna, proceed to step 106, otherwise, illustrate that this label also continues to flow in the coverage of first antenna and second antenna, temporarily also can't judge its flow direction, then finish to judge flow process.
Step 106, carry out second decision operation, wherein, second decision operation is used for entering constantly and second departure time was judged the flow direction of label according to first, particularly: calculated for first mistiming (referring to the mistiming absolute value) that enters the moment and second departure time; If should the mistiming less than preset value, the flow direction of then determining label be mobile from second day alignment first antenna.If the above-mentioned mistiming, then system side was abandoned the operation of the flow direction of definite label more than or equal to preset value.
To be system set in advance according to the flowing velocity of label the preset value here.For example, system is 10s according to the preset value of the flowing velocity setting of label, if first enter constantly absolute value with mistiming of second departure time less than 10s, the flow direction of then representing label is for flowing from second day alignment first antenna.
Described above is the operation of first antenna, and in fact, when label flowed the coverage of second antenna, second antenna also had and carries out determining of flow direction.At this moment, for second antenna, its first decision operation of carrying out is as follows: judged whether to preserve label and entered first departure time that first of first antenna entered constantly and left first antenna, at this moment, under above-mentioned hypothesis prerequisite (promptly, label flows from second day alignment first antenna), at this moment, label leaves second antenna, enter first antenna, but also do not leave first antenna, that is, also do not have for first departure time, therefore, whether judged result incites somebody to action, and then temporarily can't carry out the judgement of flow direction, finishes deterministic process.This and first antenna are judging that not preserving second enters constantly and operation during second departure time is similar.
By above description as can be seen, by presetting an internal memory in system side, be used to preserve the time of label turnover antenna, judge the flow direction of label by these mistimings, than prior art, the embodiment of the invention does not need special sensing apparatus and does not need manual operation, has saved resource.
Embodiment two
In this embodiment, provide a kind of preferred implementation.
For the first above-mentioned antenna carried out the definite process of flow direction, if can not successfully get access to for first departure time within a certain period of time, then the delay situation had appearred in care label in first antenna, at this moment, can abandon determining the flow direction of label.
Similarly, for the second above-mentioned antenna, when carrying out the flow direction judgement, if can not successfully get access to for second departure time within a certain period of time, then the delay situation has appearred in care label in second antenna.
Fig. 2 is the synoptic diagram of embodiment of the invention application scenarios, as shown in Figure 2, in rfid system, two adjacent antennas (promptly, the first above-mentioned antenna and second antenna are represented with antenna A, antenna B) to place in a straight line, these two antennas are a pair of each other, be connected to same reader respectively, or different readers.As shown in Figure 2, the coverage of two antennas (that is the zone of covering) can have intersection region (shown in dash area among Fig. 2).Describe the embodiment of the invention in detail below in conjunction with Fig. 2.
Label is in the process through two antennas, reader is by the radiofrequency signal identification label, label is to the moment message that reports the turnover antenna of reader, the time message here is that label enters the antenna and the moment of leaving antenna, the time message note that respectively label is entered antenna is made addtion (sign enters constantly), leave the time message note of antenna and make deletion (sign departure time), and these time message are kept at default internal memory (this default internal memory can be arranged in outside two antennas), be designated as resident message M.
For example, for antenna A, resident message note is made M1, and M1 comprises label and enters entering (being addtion1) constantly and leaving departure time (being deletion1) of antenna A coverage of antenna A coverage; For antenna B, resident message note is made M2, and M2 comprises label and enters entering (being addtion2) constantly and leaving departure time (being deletion2) of antenna B coverage of antenna B coverage.If label reports to M1 (corresponding and above-mentioned step 102) with deletion1, then antenna A triggers decision operation, judge among the M2 and whether addtion2 and deletion2 are arranged (promptly, label enters the time of antenna B and leaves the time of antenna B) (corresponding to above-mentioned step 104), if addtion2 and deletion2 are arranged, then system can judge the flow direction (corresponding to above-mentioned step 106) of label according to M1 and M2.That is, according to the mistiming of addtion1 and deletion2, with preset value (for example, 10s) compare, if the mistiming flow direction that, then can judge label less than preset value for antenna B to antenna A, if the mistiming, then system abandoned determining the flow direction of label more than or equal to preset value.
Based on Fig. 2, below provide detailed process according to definite method of the label flow direction of the embodiment of the invention.Because antenna A is connected to same reader or different readers respectively with antenna B, therefore, reader and label can be regarded as alternately antenna and label alternately, that is, label can be known by antenna to the response message of reader.
The corresponding T of each label, during the message that on label, calls time, can generate T in the default internal memory temporarily, and T is saved among the hm with the epc sign indicating number, T is used to preserve the time message of label turnover antenna, comprise attribute ma, mb, latestTime, wherein, ma is used to preserve the time message relevant with antenna A that label reports, mb is used to preserve the time message relevant with antenna B that label reports, and comprises addtion (entering the time of antenna) and deletion (leaving the time of antenna) among ma, the mb respectively; LatestTime is used to preserve two antennas and calls time on up-to-date moment of message, is used for just judging whether label has the delay situation at antenna.
Step 5, antenna B receives the time that label leaves this antenna footprint, and promptly deletion is saved in deletion among the T.mb, and triggers direction determining device (can be the direction determining device in the step 3).The direction determining device at first judges whether have addtion and two message of deletion among the T.ma, and if there is no this two message or only have one of them message then stop the direction determining device; If there are two message of addtion and deletion, whether the mistiming of then judging addtion among the time of deletion among the T.ma and the T.mb is less than preset value (for example 10 seconds), if less than, the flow direction of then judging label for antenna A to antenna B, this time deterministic process is finished, and the T example is discharged from hm.
In addition, in default internal memory, the rubbish message cleaner can be set, be used to remove T corresponding under following two kinds of situations, make the direction determining device not carry out the operation of the flow direction of determining label.
Situation one, label occurs in the coverage of an antenna, but does not move forward again.This moment, structure T was azygous, for example, have only ma that value is arranged among the T or have only mb that value is arranged, if the message that calls time on writing down among the latestTime to the up-to-date time of ma be A, if (for example at first safety time of systemic presupposition, the first safety time 30s) message that calls time on not in is to mb, and at this moment, the rubbish message cleaner is removed this azygous T.
Situation two: label hold-up time in the zone of antenna A or antenna B or AB is long, this moment, structure T was paired, promptly, value is all arranged among ma among the T and the mb, if the message that calls time on writing down among the latestTime to the up-to-date time of ma be A, the message that calls time on the record to up-to-date time of mb be B, if the mistiming between A and the B greater than second safety time of systemic presupposition (for example, second safety time 60 seconds), show that then label the delay situation occurred in the overlay area of antenna A and antenna B, at this moment, the rubbish message cleaner is removed this T.
Step below in conjunction with Fig. 2 and foregoing description provides an embodiment, and the present invention is described in further detail.
(1) label (Tag1), flow to the right in the left side from Fig. 2, enters the overlay area of antenna A;
(2) antenna A receives entering constantly of label, and system generates T, and the addtion message of Tag1 is kept among the T.ma;
When (3) Tag1 flow to regional AB, antenna B received entering constantly of Tag1, then preserved addtion message in T.mb;
(4) Tag1 enters the B zone, antenna A receives deletion message, antenna A triggers the direction determining device, if the message complete (promptly comprising addtion message and deletion message) at this moment among the T.mb, and, if the absolute difference of T.ma.addtion and T.mb.deletion is less than preset value, 10s for example, then the flow direction of label for antenna B to antenna A, but, this moment the message also imperfect (having only the addtion message in above-mentioned (3)) among the T.mb, therefore, the flow direction of label can't be judged;
(5) Tag1 leaves the coverage of antenna B, antenna B receives deletion message, antenna B triggers the direction determining device, at this moment, judges whether message is complete among the T.ma, according to above-mentioned steps, the T.ma message of this moment is completely, and the absolute difference of T.mb.addtion and T.ma.deletion is less than preset value (10s in promptly above-mentioned (4)), then, the flow direction that can judge label for antenna A to antenna B.
In specific implementation process, also have abnormal conditions to occur.For example, above-mentioned situation one, Tag1 does not continue to flow toward the B direction in regional A, but again along going back in the other direction, at this moment has only information is arranged among the T.ma, and the rubbish message cleaner then can will be disposed T behind 30s (i.e. first safety time).
Again for example, Tag1, does not continue to flow forward along antenna A behind antenna B zone, but turns back to the zone (is example with scene shown in Figure 2) of antenna A again, and deterministic process at this moment is:
(1) label at first enters the zone of antenna A, report the time message that enters the antenna a-quadrant be addtion1 to system, system generates T temporarily, addtion1 is saved among the T.ma;
(2) label enters the zone (being dash area shown in Figure 2) of antenna B, report the time message that enters antenna B zone be addtion2 to system, addtion2 is saved among the T.mb;
(3) label leaves the zone of antenna A, report the time message of leaving the antenna a-quadrant be deletion1 in T.ma, antenna A triggers the direction determining device, owing to have only addtion2 among the T.mb this moment, therefore, can't judge that label flows to;
(4) label turns back to the zone of antenna A again after mobile a period of time in antenna B zone, reporting the time message of leaving antenna B is among the deletion2 to T.mb, at this moment, antenna B triggers the direction determining device, and simultaneously, having preserved the time message that label enters antenna A once more among the T.ma is addtion11, and removed addtion1 and the deletion1 among the T.ma, owing to have only addtion11 among the T.ma of this moment, therefore, still can't judge the flow direction of label;
(5) after label leaves the zone of antenna A, having preserved the time message that label leaves antenna A among the T.ma is deletion11, at this moment, antenna A triggers the direction determining device, because comprise addtion2 and deletion2 among the T.mb this moment, therefore, if the mistiming of addtion11 and deletion2 is during less than preset value, the flow direction that can judge label for from antenna B to antenna A, meet the whereabouts of Tag1.
Fig. 3 is the scene synoptic diagram that the embodiment of the invention is applied to four antennas, promptly, respectively increase the scene of antenna a, a b on A and B opposite, this scene is used to overcome the zone C shown in Fig. 2 (being the blind area, outside the overlay area of antenna A and antenna B), in this scene, the time message that antenna Aa or antenna Bb report can be used as a time message, that is, the overlay area of antenna A and antenna a all is regional A, and the overlay area of antenna B and antenna b all is an area B.The operation that judgement label in this scene flows to can be with reference to the operation in above-mentioned Fig. 2 scene.
Need to prove that for convenience of description, illustrated and described the technical scheme of method embodiment of the present invention in above-mentioned form with step, the step described in above-mentioned can be carried out in the computer system such as a set of computer-executable instructions.Though in the process of foregoing description, logical order has been shown, in some cases, can have carried out step shown or that describe with the order that is different from herein.
Device embodiment
According to the embodiment of the invention, a kind of definite device of label flow direction is provided, the definite device that is applied to this label flow direction of rfid system can be used for the method that realizes that said method embodiment provides.
Fig. 4 is the block diagram according to definite device of the label flow direction of the embodiment of the invention, and as shown in Figure 4, definite device of this label flow direction comprises: storer 1, reader 2, decision device 3.Below each module is described in detail.
By above description as can be seen, by the label of preserving according to storer, can judge the flow direction of label according to the time of turnover antenna.
Fig. 5 is the preferred structure block diagram according to definite device of the label flow direction of the embodiment of the invention, be preferably used for realizing scene shown in Figure 2 or shown in Figure 3 among the said method embodiment, as shown in Figure 5, except comprising module shown in Figure 4, this device also comprises scheduler 4, and wherein, storer 1 comprises first storage part 10 and second storage part 12, decision device 3 comprises: arithmetical unit 30, comparer 32 and decision unit 34 below are described in detail each submodule.
First storage part 10 is used to store enter constantly and departure time corresponding with first antenna; Second storage part 12 is used to store enter constantly and departure time corresponding with second antenna.Storage operation can be particularly: enter first of first antenna according to label and enter and constantly upgrade that original label enters constantly and first departure time about first of first antenna in first storage part 10, correspondingly, entering second of second antenna according to label enters and constantly upgrades that original label enters constantly and second departure time about second of second antenna in second storage part 12.That is to say that first of storage enters the moment, first departure time, second enters constantly and second departure time all was current up-to-date temporal information.
Arithmetical unit 30, be used to calculate reader 2 that read corresponding with first antenna enter constantly and with the mistiming of second antenna between the corresponding departure time.That is, during first departure time, calculate first in first storage part 10 and enter constantly and the mistiming of second departure time in second storage part 12 in 10 storages of first storage part; Perhaps during second departure time, calculate second in second storage part 12 and enter constantly and the mistiming of first departure time in first storage part 10 in 12 storages of second storage part.
Comparer 32 is connected to arithmetical unit 30, is used for the mistiming and first preset value are compared, and can be system set in advance according to the flowing velocity of label this first preset value, and for example, first preset value can be 10s.First preset value here can be the preset value described in the said method embodiment.
Decision unit 34 is connected to comparer 32, is used for the comparative result according to comparer 32, determines the flow direction of label, wherein, if comparative result be the mistiming less than first preset value, determine that then the flow direction of label is from second day alignment first antenna.
The operating process of arithmetical unit 30, comparer 32 and decision unit 34 particularly can repeat no more here with reference to second decision operation of the step 106 among the said method embodiment.
Fig. 6 is the block diagram according to another preferred structure of definite device of the label flow direction of the embodiment of the invention, after can being used to realize execution rubbish message cleaner corresponding to said method embodiment, the direction determining device is not carried out the operation of the flow direction of determining label, that is, not enforcement of judgment execute a judgement unit 34 is calibrated really and is signed the function that flows to.As shown in Figure 6, on the basis of structure shown in Figure 5, storer 1 is connected with decision device 3, and storer 1 can also comprise the 3rd storage part 14, be connected to first storage part 10 and second storage part 12, be used for storing respectively the message delivery time relevant with second antenna with first antenna.The message delivery time relevant with second antenna here with first antenna, be meant the moment that enters the moment (or departure time) that the 10 up-to-date storages of first storage part are corresponding with first antenna, and second storage part, the 12 up-to-date storages moment that enter the moment (or departure time) corresponding with second antenna.The 3rd storage part 14 can be used for realizing the function of the latestTime of said method embodiment.
Arithmetical unit 30 in the decision device 3 also be used to calculate the message delivery time relevant with first antenna and with the relevant message delivery time of second antenna between difference, comparer 32 also is used for the difference and second preset value are compared, it is difference during greater than second preset value that scheduler 4 also is used for comparative result at comparer 32, and decapacitation is to the scheduling of decision unit 34.Second preset value here comprises two kinds of situations, correspond respectively to first safety time of the situation one among the said method embodiment, and second safety time of the situation among the said method embodiment two, promptly, in situation once, this second preset value is corresponding to first safety time, and situation two times, this second preset value is corresponding to second safety time.
This preferred scheme can be implemented under two kinds of situations among the said method embodiment, and not enforcement of judgment execute a judgement unit 34 is calibrated really and signed the function that flows to.The concrete operations of above-mentioned the 3rd storage part 14, arithmetical unit 30, comparer 32, decision unit 34 can repeat no more here with reference to the description among the said method embodiment.
In sum, the present invention does not need special sensing apparatus, does not need manual operation, just can be on the basis of existing equipment, judge the flow direction of label according to the time of label turnover antenna, the present invention can save more resource, has filled up a technological gap in RFID field.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the memory storage and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. definite method of a label flow direction, be applied to comprise that the radio-frequency recognition system of one or more readers, label, first antenna and second antenna is a rfid system, wherein, described first antenna and second antenna are connected to one or more readers respectively, it is characterized in that described method comprises:
Obtain described label and enter first first departure time that enters constantly and leave the overlay area of described first antenna of the overlay area of described first antenna;
Judged whether to preserve second second departure time that enters constantly and leave the overlay area of described second antenna that described label enters the overlay area of described second antenna;
If judged result is for being, then enter constantly and the flow direction of definite described label of described second departure time according to described first.
2. method according to claim 1 is characterized in that, enters constantly and described second departure time determines that the flow direction of described label comprises according to described first:
Calculating described first enters constantly and the mistiming between described second departure time;
If the described mistiming, determines then that the flow direction of described label is from described second day described first antenna of alignment less than preset value.
3. method according to claim 2 is characterized in that, if the described mistiming more than or equal to described preset value, then abandons determining the flow direction of described label.
4. method according to claim 1 is characterized in that, described method also comprises:
If can not successfully get access in the given time described first departure time, then abandon determining the flow direction of described label.
5. according to each described method in the claim 1 to 4, it is characterized in that the described label that obtains enters the operation that first of first antenna enters constantly and comprises:
Obtain and preserve described label and enter constantly, and delete original first and enter constantly and first departure time when described first of the overlay area that advance into described first antenna.
6. definite device of a label flow direction is characterized in that, described device comprises:
Storer is used for the departure time that enters constantly and leave the overlay area of antenna that storage tags enters the overlay area of antenna;
Reader is used for reading described entering constantly and the described departure time from described storer;
Decision device is used for described enter constantly and the described departure time is determined the flow direction of described label of reading according to described reader.
7. device according to claim 6 is characterized in that, described storer comprises:
First storage part is used to store enter constantly and departure time corresponding with first antenna;
Second storage part is used to store enter constantly and departure time corresponding with second antenna.
8. device according to claim 7 is characterized in that, described device also comprises:
Scheduler is used for reading from described second storage part at described reader and corresponding with described second antenna enter constantly and during the departure time, described decision device is dispatched.
9. device according to claim 8 is characterized in that, described decision device also comprises:
Arithmetical unit, be used to calculate described reader reads corresponding with described first antenna enter constantly and with the mistiming of described second antenna between the corresponding departure time; Comparer is used for the described mistiming and first preset value are compared;
Decision unit, be used for comparative result, determine the flow direction of described label, wherein according to described comparer, if described comparative result be the described mistiming less than described first preset value, determine that then the flow direction of described label is from described second day described first antenna of alignment.
10. device according to claim 9 is characterized in that, it is described mistiming during more than or equal to described preset value that described scheduler also is used for comparative result at described comparer, and decapacitation is to the scheduling of described decision unit.
11. device according to claim 8 is characterized in that, described storer also comprises:
The 3rd storage part is used for storing respectively the message delivery time relevant with second antenna with first antenna;
Described arithmetical unit also be used to calculate the message delivery time relevant with first antenna and with the relevant message delivery time of second antenna between difference;
Described comparer also is used for the described difference and second preset value are compared;
Described scheduler also is used for comparative result at described comparer when being described difference greater than described second preset value, and decapacitation is to the scheduling of described decision unit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102286549A CN102073836A (en) | 2009-11-23 | 2009-11-23 | Method and device for determining label flowing direction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016188359A1 (en) * | 2015-05-22 | 2016-12-01 | 上海鸿研物流技术有限公司 | Delivery method and system of recyclable logistics appliances |
| CN106652139A (en) * | 2016-12-28 | 2017-05-10 | 盐城工学院 | Vehicle in and out carbarn detection method and device based on RFID |
| CN114580587A (en) * | 2022-03-11 | 2022-06-03 | 浙江本源质品信息科技股份有限公司 | Identification system with directionality |
-
2009
- 2009-11-23 CN CN2009102286549A patent/CN102073836A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016188359A1 (en) * | 2015-05-22 | 2016-12-01 | 上海鸿研物流技术有限公司 | Delivery method and system of recyclable logistics appliances |
| US10990920B2 (en) | 2015-05-22 | 2021-04-27 | Shanghai Hongyan Returnable Transit Packagings Co., Ltd. | Delivery method and system of recyclable logistics apparatus |
| CN106652139A (en) * | 2016-12-28 | 2017-05-10 | 盐城工学院 | Vehicle in and out carbarn detection method and device based on RFID |
| CN114580587A (en) * | 2022-03-11 | 2022-06-03 | 浙江本源质品信息科技股份有限公司 | Identification system with directionality |
| CN114580587B (en) * | 2022-03-11 | 2024-03-29 | 浙江本源质品信息科技股份有限公司 | Identification system with directivity |
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Application publication date: 20110525 |