EP2310979A1 - Identification de l'ordre de succession de transpondeurs rfid - Google Patents

Identification de l'ordre de succession de transpondeurs rfid

Info

Publication number
EP2310979A1
EP2310979A1 EP08785389A EP08785389A EP2310979A1 EP 2310979 A1 EP2310979 A1 EP 2310979A1 EP 08785389 A EP08785389 A EP 08785389A EP 08785389 A EP08785389 A EP 08785389A EP 2310979 A1 EP2310979 A1 EP 2310979A1
Authority
EP
European Patent Office
Prior art keywords
transponder
rfid
objects
quality value
transponders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08785389A
Other languages
German (de)
English (en)
Inventor
Thomas Bleisteiner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2310979A1 publication Critical patent/EP2310979A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • 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
    • G06K7/10118—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 the sensing being preceded by at least one preliminary step
    • G06K7/10128—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 the sensing being preceded by at least one preliminary step the step consisting of detection of the presence of one or more record carriers in the vicinity of the interrogation device
    • 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
    • G06K7/10366—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 the interrogation device being adapted for miscellaneous applications
    • G06K7/10415—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 the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM
    • G06K7/10425—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 the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM the interrogation device being arranged for interrogation of record carriers passing by the interrogation device
    • G06K7/10435—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 the interrogation device being adapted for miscellaneous applications the interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM the interrogation device being arranged for interrogation of record carriers passing by the interrogation device the interrogation device being positioned close to a conveyor belt or the like on which moving record carriers are passing

Definitions

  • the invention relates to a method for detecting the order of detected by an RFID reader RFID transponders.
  • RFID readers for reading RFID transponders are used wherever it is necessary to sort and distribute objects, such as general cargo.
  • RFID readers are therefore used in baggage sorting or postal distribution centers to ensure rapid sorting and speedy transport of luggage or packages.
  • the transponders which are applied to the cargo, stored data about its destination. This information is read out of the transponders at certain reading stations via the RFID readers, so that the luggage or packages with the transponders attached to them can be distributed on the basis of the information or passed through the baggage sorting system.
  • a path decision is made for the corresponding items of luggage or packages on the basis of the data on the RFID transponders.
  • the correct identification of the order of the piece goods guided through the RFID reading cabin is therefore essential when reading and writing the RFID transponder.
  • pieces of luggage or parcels are guided through the RFID reader at high speed and at a suitable distance. It may therefore happen that the RFID reader device simultaneously detects several transponders that belong to different packages or pieces of luggage and thus a unique recognition is lost, so that there is a faulty sorting.
  • the object of the present invention is therefore to provide a method which enables a secure order sequence identification of RFID transponders and thus of the objects.
  • the object is achieved by a method for detecting the order of RFID transponders detected by an RFID reader, in which the RFID transponders are assigned to objects, the objects being moved past the RFID reader on a conveying path during which the movement of an object between two defined points of the conveyor line all detected RFID transponders are assigned to the object, in which for each RFID transponder a quality value for the probability that the RFID transponder is located on the object, and in the the assignment of an RFID transponder to the object is canceled if the determined quality value falls below a first defined threshold value.
  • the invention is based on the finding that a measure for the correct assignment of this corresponding transponder to the object can be given by the formation of a quality value which reflects the frequency of detection of a transponder for a specific object.
  • the quality value is an absolute measure, since it is determined from the sum of the detection of a transponder for a particular object.
  • Each transponder detected in the reading booth by the RFID reader can be assigned a value in this way, and a simple comparison with a given threshold value allows a statement as to how good the detection of the transponder is with respect to the object.
  • the assignment to the object takes place here in a simple manner, in which the detection of the transponder for determining the quality value takes place during a defined period of time, which takes place via the movement of the object on the conveyor belt between a fixed start and a fixed end. It is thus precisely recorded how often the transponder was read in, while the object moves from a defined starting point to a defined end point. A simple assignment of the detection of the transponder to the object is guaranteed.
  • this quality value is simple and can be carried out directly during the transport of the luggage or packages with the appropriate transponders by the RFID reader. Thus, a quality value for the assignment of the transponder to the objects is already determined during the transport.
  • the ascertained quality value is preferably determined from the sum of all detections of a transponder. This is a simple rule that leads to a speedy and safe result for the transponder's quality value. Several detections occur when several antennas of the RFID reader arranged in the cabin detect the transponder at the same time, or if the object is the reading cabin in this wayteurabel that the transponder is detected during several scanning cycles of the RFID reader.
  • An advantageous embodiment of the invention is characterized in that the determined quality value of a first RFID transponder during the movement of the object between the two points with the determined quality value of a subsequent RFID transponder during the movement of the object between the two Points is compared.
  • a quality value is determined for each transponder during the passage of an object.
  • This quality value can be compared with the quality value of another transponder which is read during the transit of the object. If, for example, during the movement of an object between the two points (beginning and end) for the measurement, a first transponder is detected four times and a second transponder detected only twice, the quality value of the first transponder is higher than that of the second transponder. If these two are set in relation, the result is a value that serves as a measure of the correct assignment of the transponder to the object. Here, the value is most easily formed from the quotient of the two quality values of the detected transponder.
  • the assignment of the first detected transponder to the object is canceled.
  • There is thus an evaluation function for each transponder which makes it possible to determine whether a transponder belongs to an object. This method or the calculation is carried out until all transponders detected at a time when the object was located between the beginning and the end of the measuring section are compared with one another. As a result, the transponder is then assigned to the object that had the better quality value.
  • a further advantageous embodiment is characterized in that that for an RFID transponder for a first Ob- jekt quality value is compared with the quality value determined for the same transponder for a subsequent object.
  • an evaluation function is again defined, which bases on the quotient of the quality of the detection of the first transponder in the current object and the detection of the same transponder in the comparison object. If a defined threshold value is exceeded by the quotient of the evaluation function, the assignment of the checked transponder from the current object is deleted. This evaluation is carried out for all transponders recorded for a current object. This evaluation can also be carried out for all subsequent properties. Overall, in this way, by evaluating the quality of the individual transponders within an object, as well as the quality of a specific transponder over several objects, a reliable determination of the order in which the transponders are moved by the RFID reading unit is ensured.
  • the presented method can be used particularly well in environments in which many objects, to which transponders are assigned, are moved past an RFID reader at high speed and in which the information on the transponders is read out to the object as a function of to transport the data read out in a certain direction.
  • the method is thus applicable to any form of single-piece sorting equipment. It is therefore equally applicable to manufacturing plants in which workpieces are to be transported in different ways depending on their property or be processed differently.
  • the method can also be used for the sorting of material or workpieces in high-bay warehouses.
  • a secure assignment of the objects despite high transport speed and small distance between the objects is ensured by means of the method.
  • This security is set via the quality rating functions and the corresponding thresholds.
  • random transponder captures of other objects, which result from reflections due to the structural conditions are reliably filtered out.
  • the comparison of the transponders of different objects leads to an increase in the probability that a transponder is reliably assigned to an object. This is especially noticeable when there are small distances between the objects to be detected.
  • FIG 1 shows a schematic representation of a transport system
  • FIG 2 is a representation of the method in a flowchart.
  • 1 shows a transport system for objects O, which may be piece goods, such as parcels or items of luggage or workpieces or workpiece carriers.
  • the objects are conveyed on a conveyor line f, in which case they are moved through a reading cabin with an RFID reader L.
  • Each object O is assigned an RFID transponder T.
  • the transponders T are detected by the RFID reader L, which has several antennas LG here.
  • the order in which the objects O and thus the transponder T are moved on the conveyor line f determined.
  • the objects O are then transported on the basis of the ascertained sequence on different paths, for example to two different destinations Z1, Z2.
  • FIG. 2 shows a flowchart indicating the steps of the method for sequence detection of RFID transponders.
  • 2nd step Determining the quality of a transponder per object: A quality Q is determined for each transponder T, which establishes a relation to the probability that the transponder T is located at the object:
  • the quality is the summation of all detections of the transponder T 1 :
  • a rating function B 01 is defined, which refers to a specific transponder T 1 over several objects. In the generalization, this means that the
  • Transponder T 1 is evaluated for m precursor objects and n successor objects. The evaluation is made via all transponders which have been assigned to the current object. Step 3 may begin for a particular object if the n successor objects have left the defined read range of step 1.
  • the evaluation function B oi is the quotient of the quality Ti in the current object 0 A
  • the comparison object O v ' If one evaluates the comparison object, the result is: a * (o .. ⁇ w,) - U ⁇ y VI ⁇ ).
  • this compares only with the predecessor and the successor object.
  • Step 3.1 An evaluation of a transponder with respect to the predecessor object O v takes place :
  • the evaluation function B 0 ( ⁇ A , O v , T l ) exceeds a defined threshold value S with respect to the current object O A , the transponder T 1 is removed from the current object. This evaluation is carried out for all transponders of the current object.
  • Step 3.2 An evaluation of a transponder with respect to the successor object O N takes place :
  • the evaluation function B N ( ⁇ A , O N , T j ) exceeds a defined threshold value 5 with respect to the subsequent object O N , then the transponder T ⁇ is removed from the following object. This evaluation is carried out for all transponders of the current object.
  • step 3 Evaluation of the transponders left over from step 3:
  • an evaluation function B can finally be defined for each transponder Ti, which evaluates this with respect to a second transponder T j . If the evaluation function exceeds a specific threshold value S, the transponder Ti is removed.
  • the evaluation function is the quotient of the quality of T j and Ti B (TT) - Q ⁇ ⁇ ⁇ " jh Q (T 1 )
  • the transponder T 1 is removed if the number of detections of the transponder T 3 is higher by more than a factor of two.
  • Step 2 is ended when all transponders detected at a time are compared with each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

L'invention concerne un procédé pour identifier l'ordre de succession de transpondeurs RFID (T) détectés par un lecteur RFID (L). Selon ce procédé, les transpondeurs RFID (T) sont associés à des objets (O) qui sont déplacés sur une section de transport (f) et passent devant le lecteur RFID (L); pendant le déplacement d'un objet (O) entre deux points définis (A, E) de la section de transport (f), tous les transpondeurs RFID (T) détectés sont associés à l'objet (O); pour chaque transpondeur RFID (T), une valeur de qualité (Q) concernant la probabilité que ce transpondeur RFID (T) se trouve sur l'objet (O) est déterminée; l'association d'un transpondeur RFID (T) à l'objet (O) est annulée si la valeur de qualité (Q) déterminée est inférieure à une première valeur seuil (Sabs) définie.
EP08785389A 2008-08-06 2008-08-06 Identification de l'ordre de succession de transpondeurs rfid Withdrawn EP2310979A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/006471 WO2010015266A1 (fr) 2008-08-06 2008-08-06 Identification de l'ordre de succession de transpondeurs rfid

Publications (1)

Publication Number Publication Date
EP2310979A1 true EP2310979A1 (fr) 2011-04-20

Family

ID=40260529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08785389A Withdrawn EP2310979A1 (fr) 2008-08-06 2008-08-06 Identification de l'ordre de succession de transpondeurs rfid

Country Status (3)

Country Link
EP (1) EP2310979A1 (fr)
CN (1) CN102112994A (fr)
WO (1) WO2010015266A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9898633B2 (en) * 2015-04-29 2018-02-20 Datalogic IP Tech, S.r.l. Method and system for determining the position and movement of items using radio frequency data
DE102016122682A1 (de) * 2016-11-24 2018-05-24 Balluff Gmbh Verfahren und Einrichtung zur Bestimmung der Reihenfolge von Objekten mittels Transpondertechnologie

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
JP2005525930A (ja) * 2002-05-16 2005-09-02 ユナイテッド　パーセル　サービス　オブ　アメリカ　インコーポレイテッド 無線周波数の識別技術を用いてパッケージを分類及び配送するシステム及び方法
US7005965B2 (en) * 2003-02-14 2006-02-28 Winbond Electronics Corporation Radio frequency identification device
US7063256B2 (en) * 2003-03-04 2006-06-20 United Parcel Service Of America Item tracking and processing systems and methods
JP2006020083A (ja) * 2004-07-01 2006-01-19 Omron Corp タグ通信用アンテナ、タグ通信装置、タグ通信システム、タグ通信装置のスキャン調整方法、およびスキャン調整プログラム
JP2006277233A (ja) * 2005-03-29 2006-10-12 Fujitsu Ltd タグ試験装置、タグ試験方法およびタグ試験プログラム
US7385525B2 (en) * 2005-07-07 2008-06-10 Mark Iv Industries Corporation Dynamic timing adjustment in an electronic toll collection system
CN1836797A (zh) * 2006-04-24 2006-09-27 天津市易雷电子标签科技有限公司 无线射频识别技术控制的机场行李分拣系统和平移式分拣装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010015266A1 *

Also Published As

Publication number Publication date
CN102112994A (zh) 2011-06-29
WO2010015266A1 (fr) 2010-02-11

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