CN102479071A - Method and device for filtering tag events of middleware of RFID (Radio Frequency Identification) application system - Google Patents
Method and device for filtering tag events of middleware of RFID (Radio Frequency Identification) application system Download PDFInfo
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Abstract
The invention relates to middleware of an RFID (Radio Frequency Identification) application system and belongs to the field of the application of RFID. A method for filtering tag events of the middleware of the RFID application system is characterized by comprising the following steps: (1) a tag acquisition device acquires electronic tag data from RFID readers and sends the data to a redundant tag event filter; and (2) after receiving the tag data, the redundant tag event filter extracts reader flags, antenna flags and information on acquisition time from the tag data, filters tag data which come from the same RFID reader or the same antenna and repeatedly appear in a designated time period, and then, outputs effective tag data. According to the invention, through hierarchical multiple electronic tag event filters, the filtering of redundant electronic tag events is achieved, the resources of the RFID application system, which are consumed by diverse electronic tag events, are lowered, and the efficiency of the RFID application system is increased.
Description
Technical field
The present invention relates to a kind of middleware of RFID application system, relate in particular to the label event filter method and the device thereof of middleware.
Background technology
The electronic tag data of RFID equipment can discerned and collect to RFID middleware (Radio Frequency Identification middleware) automatically, and it applies to fields such as various logistics, manufacturing and important item tracking widely.
In rfid system; The label event realization corresponding service logic that the RFID application module reports through receiving the RFID middleware; In a large-scale applied environment; The RFID equipment that has hundreds of various models is worked at the same time, and this has just proposed very high requirement to the RFID middleware to the processing of label event.
At present, the common way for tag processes in RFID uses is, receives an ADDITION (increase) incident, thinks that a new label is increased to sensing range;
If receive a DELETION (deletion) incident, think that then the corresponding label of this information leaves sensing range;
If receive a CURRENT (in real time) incident, think that then the corresponding label of this information is also in sensing range.
The RFID application system is through ADDITION, and DELETION and CURRENT incident can be judged the trend of label, thereby realize service logic separately.
Generally speaking; This mode can operate as normal; But because the complicacy of RFID application scenarios; When multiple label was checked under same reader simultaneously, these labels will all be scanned, and application system only is concerned about the label data of wherein specific one or more probably.
Simultaneously, under the CURRENT pattern, if hope the current label that scans of output in real time, then must the cycle of label aggregation is provided with short as far as possible, this just means the label data of collecting in former and later two cycles simultaneously, is redundant to a great extent.
In sum; If will only take ADDITION, DELETION and three kinds of patterns of CURRENT; The label event that will cause the RFID middleware to report comprises redundant and irrelevant label data; Perhaps can't accurately judge the moving direction of electronic tag, this will cause the treatment effeciency of using system and have a strong impact on.
Chinese invention patent ublic specification of application 200910025117.4 discloses " a kind of filtering method model of RFID hardware middleware ", and the filter method that it discloses the hardware middleware in a kind of RFID field provides " two-layer filtration " model.This technical scheme is applied to the hardware middleware; Disclose and carried out the scheme that label filters in the chained list of in the room and time of regulation, setting up, but this scheme uses storage space and node time to filter merely when filtering label; Can't the label event data of three kinds of above-mentioned patterns be made full use of; Therefore can't improve significantly the treatment effeciency of using system, and, come from the label data of the different antennae of same RFID reader for complicated RFID application system; Can be fallen by automatic fitration, thereby can't distinguish label moving between different reader antennas.
Summary of the invention
Technical matters to be solved by this invention provides a kind of label event filter method and device of RFID application system middleware; Solving present filter method can't make full use of the label event data; Treatment effeciency to using system can't improve significantly, and the defective that can't distinguish for the label data of the different antennae that comes from same RFID reader.
Technical scheme
A kind of label event filter method of RFID application system middleware is characterized in that: comprise the steps:
(1) the label collector is gathered electronic tag data from the RFID reader, issues redundant label event filtrator;
(2) redundant label event filtrator receives after the label data; Extract reader sign, antenna sign and acquisition time information in the label data; Filter out in view of the above from same RFID reader or same antenna; And the label data that at the appointed time repeats to occur in the section, export effective label data then.
In the said step 1, in the RFID middleware, there are a plurality of label collectors.
In the said step 2, said redundant label event filtrator receives after the label data, and filter type is:
Filter based on reader; Said redundant label event filtrator is provided with label redundancy time interval T; If at t1, t2 scans the same electronic tag of the reader sign of extraction corresponding to same reader respectively in the time, and | t2 – t1| < T; Think that then these two labels are redundant labels, only export the label that first scans;
Or filter based on reader antenna; Said redundant label event filtrator is provided with label redundancy time interval T; If at t1, t2 scans the same electronic tag of the antenna sign of extraction corresponding to same antenna respectively in the time, and | t2 – t1| < T; Think that then these two labels are redundant labels, only export the label that first scans.
Further; Said redundant label event filtrator exports effective label data to tag types identification filtrator; Said tag types identification filtrator filters out the label data of the type of appointment according to the categorical data of label data self, exports effective label data then.
Said tag types identification filtrator generates the label standard of being observed according to label data; Convert the label data that receives to label standard corresponding textual form; Compare with the corresponding the text field that is used to filter that is provided with then, select respective labels, the label data that output needs.
Further, said filtration back effectively label data is sent to the label mode filtrator, externally exports with three kinds of patterns: CURRENT, ADDITION, DELETION.
Said label mode filtrator is provided with the polymerization cycle of label; Under the CURRENT pattern; Be set to externally export all labels of receiving in this polymerization cycle, under the ADDITION pattern, only export the label that newly scans in this polymerization cycle; Under the DELETION pattern, only export and do not scan in this polymerization cycle and label that last polymerization cycle scans.
A kind of label event filtration unit of RFID application system middleware; Comprise RFID reader and antenna; The RFID middleware that is connected with the RFID reader; It is characterized in that: said RFID middleware comprises the label collector that links to each other with the RFID reader; The label transport that said label collector is gathered is to the redundant label event filtrator that is connected with the label collector; Said redundant label event filtrator comprises RFID reader judge module and antenna judge module; Judge back output label data; Said RFID reader judge module comprises according to the extraction module of the data extract RFID reader sign of label collector transmission with according to data and corresponding acquisition time that this extraction module extracts judging whether the identical electronic label that comes from same RFID reader is the judge module of redundant label, and said antenna judge module comprises the extraction module of extraction antenna sign and judges according to data and corresponding acquisition time that this extraction module extracts whether the identical electronic label that comes from same antenna is the judge module of redundant label.
Further; Said redundant label event filtrator connects tag types identification filtrator; Outputed to tag types identification filtrator through the label after the redundant label event filtrator filtration, generate the label standard of observing according to label tag types is discerned and filtered.
Further, said redundant label event filtrator or tag types identification filtrator connect the label mode filtrator, and said label mode filtrator converges the label data that receives, and externally exports with three kinds of patterns: CURRENT, ADDITION, DELETION.
Beneficial effect
Electronic tag event filtering method and the device that is used for the RFID middleware disclosed by the invention; Existing redundant label based on same RFID reader filters; Also there is redundant label to filter based on the same RFID reader and the same antenna; So the label data with same RFID reader different antennae makes a distinction, and has both helped the setting of the rfid system of open field large-sized object, the processing of label data; And can judge label moving direction in short-term, the problem of filtering redundant label when solution needs to judge moving direction; Employing is filtered based on the redundant label of RFID reader, has also solved the problem that label data that the complicated RFID application system that adopts multiple RFID reader faced can't Unified Treatment; The present invention has realized the filtration of redundant electronic tag incident through the multiple electronic tag event filter of stratification, reduces numerous and diverse electronic tag incident to the expending of RFID application system resource, and has improved the efficient of RFID application system.
Description of drawings
Fig. 1 is the block diagram of the embodiment of the invention.
Fig. 2 is the process flow diagram of the embodiment of the invention.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing, further set forth the present invention.
Core concept of the present invention is: utilize multi-level label filtrator, filter and polymerization through the multi-angle to a large amount of label informations, filter out redundancy and irrelevant label in the label data.In the validity that keeps label output, guaranteed the real-time of label output simultaneously, greatly reduce the treatment effeciency of RFID application system simultaneously.
Below in conjunction with accompanying drawing one of embodiment of the present invention is elaborated.
Shown in accompanying drawing 1, the label event treating apparatus that the present invention implements is used for the RFID middleware, mainly comprises: label collector, redundant label event filtrator, tag types identification filtrator, label mode filtrator, history tab pond and label output pool.
Wherein, the label collector is the device that is used for gathering in real time RFID reader-tag data in the RFID middleware.
After the label collector collects label data, be real-time transmitted to redundant label event filtrator, and the label after will filtering once passes to tag types identification filtrator and label mode filtrator, finally polymerize the label data that meets application demand.
The history tab pond is to be used for buffer memory and each reader of index and the received label data information of each reader antenna in the redundant label event filtrator.
The label output pool is to be used in the label mode filtrator that buffer memory is current to be filtered/label data of polymerization, when treating that the label aggregation cycle arrives, again by the external output label data of RFID middleware.
Shown in accompanying drawing 2, step is following in the above-mentioned embodiment:
Step 203, redundant label event filtrator judge whether to need to filter redundant label, filter like needs, then advance to step 204; Otherwise jump to step 206.
Step 210 is imported current label data to the label mode filtrator.
If step 211 is with DELETION pattern output label data.
If step 214 is with CURRENT pattern output label data, then polymerization label data.
If step 215 is with ADDITION pattern formula output label data.
Step 217, current label data need be filtered, and the tag processes flow process finishes.
In above-mentioned steps 207; Label data standard according to the EPCglobal tissue; Any label data form all is made up of three parts: i.e. header field, and filtered field and relam identifier, wherein header field and relam identifier are referred to as the EPC identifier; According to the EPC identifier, just can carry out type and judge any one EPC label.Therefore, through tag types identification filtrator, just can filter out the unconcerned tag types of application layer.
The universal architecture of EPC coding is a Bit String (like, binary representation), by one by different level, a field and a series of numeric field of variable-length form, the length overall of sign indicating number, 26S Proteasome Structure and Function are determined by the value of a field fully.
After label obtained from RFID equipment, it can convert following textual form to according to the current label standard of supporting:
urn:epc:tag:TagFormat:Filter.Company.Item.Serial
Wherein " urn:epc:tag: " is the common characters string; All labels are identical, and wherein TagFormat refers to the coded format of label, for example GID-96; SGTIN-64 or the like, Filter, Company, Item, Serial have then indicated the respective field of corresponding label coding.In tag types identification filtrator, can set filtering rule through the coding mode of label, filtering rule is divided into two types: IncludePattern and ExcludePattern, both grammers are identical.The label that meets IncludePattern can be included in the label of final transmission, and the label that meets ExcludePattern can be left out.Above-mentioned label field can be according to following filter type setting:
The 1st kind, decimal integer means by the relevant position of coupling label and must get identical numerical value;
The 2nd kind, asterisk wildcard * is mated the desirable arbitrary value in relevant position of label;
The 3rd kind, scope [low-high], the value of being mated the relevant position of label must be in this scope.
Use aforesaid way one of any or be used in combination, just can formulate the corresponding filter rule, be i.e. IncludePattern and ExcludePattern accordingly.
In tag types identification filtrator, a plurality of IncludePattern and ExcludePattern can be set.
Described in the present invention method can be worked in Windows, Win CE, Linux and Unix system, and is compatible good.
Claims (10)
1. the label event filter method of a RFID application system middleware is characterized in that: comprise the steps:
(1) the label collector is gathered electronic tag data from the RFID reader, issues redundant label event filtrator;
(2) redundant label event filtrator receives after the label data; Extract reader sign, antenna sign and acquisition time information in the label data; Filter out in view of the above from same RFID reader or same antenna; And the label data that at the appointed time repeats to occur in the section, export effective label data then.
2. the label event filter method of RFID application system middleware as claimed in claim 1 is characterized in that: in the said step 1, in the RFID middleware, have a plurality of label collectors.
3. the label event filter method of RFID application system middleware as claimed in claim 1 is characterized in that: in the said step 2, said redundant label event filtrator receives after the label data, and filter type is:
Filter based on reader; Said redundant label event filtrator is provided with label redundancy time interval T; If at t1, t2 scans the same electronic tag of the reader sign of extraction corresponding to same reader respectively in the time, and | t2 – t1| < T; Think that then these two labels are redundant labels, only export the label that first scans;
Or filter based on reader antenna; Said redundant label event filtrator is provided with label redundancy time interval T; If at t1, t2 scans the same electronic tag of the antenna sign of extraction corresponding to same antenna respectively in the time, and | t2 – t1| < T; Think that then these two labels are redundant labels, only export the label that first scans.
4. like the label event filter method of claim 1 or 2 or 3 described RFID application system middlewares; It is characterized in that: said redundant label event filtrator exports effective label data to tag types identification filtrator; Said tag types identification filtrator filters out the label data of the type of appointment according to the categorical data of label data self, exports effective label data then.
5. the label event filter method of RFID application system middleware as claimed in claim 4; It is characterized in that: said tag types identification filtrator generates the label standard of being observed according to label data; Convert the label data that receives to label standard corresponding textual form; Compare with the corresponding the text field that is used to filter that is provided with then, select respective labels, the label data that output needs.
6. the label event filter method of RFID application system middleware as claimed in claim 1; It is characterized in that: said filtration back effectively label data is sent to the label mode filtrator; Externally export with three kinds of patterns: CURRENT, ADDITION, DELETION.
7. the label event filter method of RFID application system middleware as claimed in claim 6; It is characterized in that: said label mode filtrator is provided with the polymerization cycle of label, under the CURRENT pattern, is set to externally export all labels of receiving in this polymerization cycle; Under the ADDITION pattern; Only export the label that newly scans in this polymerization cycle, under the DELETION pattern, only export and do not scan in this polymerization cycle and label that last polymerization cycle scans.
8. the label event filtration unit of a RFID application system middleware; Comprise RFID reader and antenna; The RFID middleware that is connected with the RFID reader; It is characterized in that: said RFID middleware comprises the label collector that links to each other with the RFID reader; The label transport that said label collector is gathered is to the redundant label event filtrator that is connected with the label collector; Said redundant label event filtrator comprises RFID reader judge module and antenna judge module; Judge back output label data; Said RFID reader judge module comprises according to the extraction module of the data extract RFID reader sign of label collector transmission with according to data and corresponding acquisition time that this extraction module extracts judging whether the identical electronic label that comes from same RFID reader is the judge module of redundant label, and said antenna judge module comprises the extraction module of extraction antenna sign and judges according to data and corresponding acquisition time that this extraction module extracts whether the identical electronic label that comes from same antenna is the judge module of redundant label.
9. the label event filtration unit of RFID application system middleware as claimed in claim 8; It is characterized in that: said redundant label event filtrator connects tag types identification filtrator; Outputed to tag types identification filtrator through the label after the redundant label event filtrator filtration, generate the label standard of observing according to label tag types is discerned and filtered.
10. like the label event filtration unit of claim 8 or 9 described RFID application system middlewares; It is characterized in that: said redundant label event filtrator or tag types identification filtrator connect the label mode filtrator; Said label mode filtrator converges the label data that receives; Externally export with three kinds of patterns: CURRENT, ADDITION, DELETION.
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Cited By (10)
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| CN102521627A (en) * | 2011-12-07 | 2012-06-27 | 中山大学 | Redundancy eliminating algorithm of RFID (radio frequency identification) system reader based on middleware |
| CN102819559A (en) * | 2012-07-03 | 2012-12-12 | 上海大学 | RFID (Radio Frequency Identification) redundant data filtering method |
| CN103077415A (en) * | 2013-01-11 | 2013-05-01 | 重庆城投金卡交通信息产业有限公司 | Implementation system and method of radio frequency identification middleware |
| WO2013185691A1 (en) * | 2013-01-14 | 2013-12-19 | 中兴通讯股份有限公司 | Nfc terminal network application-oriented data preprocessing method and system |
| CN104008356A (en) * | 2014-06-16 | 2014-08-27 | 湖南机电职业技术学院 | Filtering method for RFID system in dense environment |
| CN105631376A (en) * | 2015-12-29 | 2016-06-01 | 中国科学院信息工程研究所 | RFID middleware and RFID data transmission realization method |
| CN105938480A (en) * | 2016-04-07 | 2016-09-14 | 重庆大学 | RFID redundant data cleansing method and system based on DTBF |
| CN104008356B (en) * | 2014-06-16 | 2016-11-30 | 湖南机电职业技术学院 | Rfid system filtering method under a kind of intensive environment |
| CN107795364A (en) * | 2016-08-30 | 2018-03-13 | 曼·胡默尔有限公司 | Operating method and filtration system for filtration system |
| CN112543121A (en) * | 2020-12-11 | 2021-03-23 | 深圳市优必选科技股份有限公司 | Multi-device group control method, electronic device, and computer-readable storage medium |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102521627A (en) * | 2011-12-07 | 2012-06-27 | 中山大学 | Redundancy eliminating algorithm of RFID (radio frequency identification) system reader based on middleware |
| CN102521627B (en) * | 2011-12-07 | 2014-10-01 | 中山大学 | Redundancy eliminating algorithm of RFID (radio frequency identification) system reader based on middleware |
| CN102819559B (en) * | 2012-07-03 | 2016-04-27 | 上海大学 | A kind of RFID redundant data filter method |
| CN102819559A (en) * | 2012-07-03 | 2012-12-12 | 上海大学 | RFID (Radio Frequency Identification) redundant data filtering method |
| CN103077415A (en) * | 2013-01-11 | 2013-05-01 | 重庆城投金卡交通信息产业有限公司 | Implementation system and method of radio frequency identification middleware |
| CN103077415B (en) * | 2013-01-11 | 2016-05-18 | 重庆市城投金卡信息产业股份有限公司 | RF identification middleware realize system and method |
| WO2013185691A1 (en) * | 2013-01-14 | 2013-12-19 | 中兴通讯股份有限公司 | Nfc terminal network application-oriented data preprocessing method and system |
| CN104008356A (en) * | 2014-06-16 | 2014-08-27 | 湖南机电职业技术学院 | Filtering method for RFID system in dense environment |
| CN104008356B (en) * | 2014-06-16 | 2016-11-30 | 湖南机电职业技术学院 | Rfid system filtering method under a kind of intensive environment |
| CN105631376A (en) * | 2015-12-29 | 2016-06-01 | 中国科学院信息工程研究所 | RFID middleware and RFID data transmission realization method |
| CN105631376B (en) * | 2015-12-29 | 2018-07-20 | 中国科学院信息工程研究所 | RFID middleware and RFID data transmission realizing method |
| CN105938480A (en) * | 2016-04-07 | 2016-09-14 | 重庆大学 | RFID redundant data cleansing method and system based on DTBF |
| CN107795364A (en) * | 2016-08-30 | 2018-03-13 | 曼·胡默尔有限公司 | Operating method and filtration system for filtration system |
| CN112543121A (en) * | 2020-12-11 | 2021-03-23 | 深圳市优必选科技股份有限公司 | Multi-device group control method, electronic device, and computer-readable storage medium |
| CN112543121B (en) * | 2020-12-11 | 2023-09-22 | 深圳市优必选科技股份有限公司 | Multi-device group control method, electronic device and computer readable storage medium |
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Application publication date: 20120530 |