EP0975441B1 - Dispositif et procede pour mesurer la rigidite de colis plats - Google Patents
Dispositif et procede pour mesurer la rigidite de colis plats Download PDFInfo
- Publication number
- EP0975441B1 EP0975441B1 EP96945363A EP96945363A EP0975441B1 EP 0975441 B1 EP0975441 B1 EP 0975441B1 EP 96945363 A EP96945363 A EP 96945363A EP 96945363 A EP96945363 A EP 96945363A EP 0975441 B1 EP0975441 B1 EP 0975441B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stiffness
- thickness
- sensors
- sensor
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 11
- 238000011156 evaluation Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 15
- 238000013461 design Methods 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 210000003041 ligament Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C1/00—Measures preceding sorting according to destination
- B07C1/10—Sorting according to size or flexibility
- B07C1/16—Sorting according to thickness or stiffness
Definitions
- the invention relates to a device and a method for measuring stiffness of flat shipments according to the preamble of the independent claims.
- a corresponding device is e.g. in EP 0 129 280.
- Such measurements can in principle be carried out mechanically a lever with a sensor roller and inductive sensor.
- a mechanical stiffness measurement also requires a lot of space and, like all mechanical ones, is subject to Facilities increased wear. The above applies in particular to unevenly thick or stiff objects. The measurement is uneven thick envelopes are e.g. treated in WO 94 04378.
- the object of the present invention is therefore an apparatus and a method specify with which a more precise stiffness measurement on flat consignments can be made. This task is characterized by the characteristics of the independent Claims resolved.
- Advantageous embodiments of the invention are the subclaims and the description.
- FIG. 1 shows a schematic diagram of a device according to the invention from above, d. H. perpendicular to the surface of the flat items.
- conveyor belts 2 are guided so that a transport route 10 is formed.
- the conveyor belts 2 are designed as shrouds, between which the Consignments are held non-positively.
- the transport route points at least a curved section 11 and at least one straight section 12.
- a stiffness sensor 3 In the area of the straight section, a thickness sensor 4 is arranged.
- the flat broadcasts will transported in the direction of arrow in the transport route 10.
- the conveyor belts are elastic and adapt to the thickness of the shipment.
- Fig. 2 the section A-A of Fig. 1 is shown.
- Two superimposed Thickness sensors 4 measure essentially perpendicular to the transport direction of the Shipment the current thickness of the conveyor belt system - flat shipment.
- the thickness sensor becomes a laser, infrared or ultrasound scanning sensor intended. The change is preferred in such scanning sensors of the distance s measured by interference. At high speeds and Noher measuring accuracy, laser scanning sensors are preferred.
- a stiffness sensor 3 a laser, infrared or ultrasonic scanning sensor is also used, which is the change in distance due to the rigidity of the flat Consignments detected.
- Thickness and rigidity sensor to determine the rigidity of the consignment running are connected to an evaluation device 15, the way they work is described in detail below.
- the thickness or stiffness sensors are preferably arranged one above the other, which is an assessment of the shipment via the allow entire shipment amount.
- the measurement is preferably carried out the thickness or the rigidity by pairs of sensors at the same height of each Senoungen.
- the stiffness sensors are in the curved area 11 preferably arranged such that the deflection of the outer conveyor belts in Area between a first and a second deflection roller 13, 14 can be avoided.
- FIG. 3 shows the time course of the output signals from thickness or stiffness sensors (a or b) in a time window for a flat shipment with permissible Stiffness and thickness. It can be seen in Fig. 3 that centered around the time of - 34.8 ms in the time window a thickness increase (curve a) and an increased deflection (curve b) was measured.
- FIG. 4 shows measured values corresponding to FIG. 3 for a letter with a permissible thickness and too great rigidity.
- the method according to the invention for measuring stiffness are now within a predetermined time window ⁇ t1 Thickness sensor measured values added up. Also from that Stiffness sensor measured values within a given time window ⁇ t2 added up.
- the two time windows ⁇ t1 and ⁇ t2 are preferably of the same size selected. Then the difference is formed between the sum of the stiffness values and the sum of the thickness values. This difference is used as a measure of the stiffness measurement used. Compared to a process in which only the Extreme values used are the likelihood of misinterpretation much less. In addition, this method also delivers for borderline cases clear results.
- FIG. 5 shows the measurement results of two stiffness sensors b1 and b2 in one Letter with insert below.
- the curve b1 corresponds to the measured values in the range the lower edge of the letter arranged sensor; curve b2 the values of an im middle area arranged stiffness sensor.
- the curve b1 clearly shows Maxima, which indicate the increased stiffness due to the insert, while curve b2 does not have such maxima. Accordingly, one is preferred Embodiment of the invention a number of sensors for stiffness and Thickness measurement essentially over the entire height of the conveyor belts arranged.
- Fig. 6 shows the influence of the belt tension on the deflection of the conveyor belts. It can be seen that the maxima the curve of the stiffness measurements become smaller and vice versa with reduced Ligament tension the maxima increase.
Landscapes
- Controlling Sheets Or Webs (AREA)
- Sorting Of Articles (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
Claims (10)
- Dispositif pour mesurer la rigidité d'envois plats comportant un trajet de transport (10) dans lequel les envois sont transportés individuellement à l'aide de bandes de transport (2), pour lequel le trajet de transport présente un segment droit (12) et au moins un détecteur d'épaisseur (4) est prévu dans la zone de ce segment, le trajet de transport présente un segment courbe (11 ) et les bandes de transport (2) sont élastiques dans la zone de ce segment et on prévoit au moins un détecteur de rigidité (3) grâce auquel on peut mesurer dans un endroit prédéterminé du segment courbe (11) la déviation des bandes de transport (2) provoquée par un envoi qui circule et on prévoit une installation d'exploitation (15) afin de déterminer la rigidité d'un envoi qui passe à partir des valeurs des détecteurs d'épaisseur et de rigidité (3, 4).
- Dispositif selon la revendication 1, caractérisé en ce que l'on prévoit en tant que détecteurs d'épaisseur (4) et en tant que détecteurs de rigidité (3) des détecteurs d'exploration à laser, à infrarouge ou à ultrasons.
- Dispositif selon la revendication 1 ou 2, caractérisé en ce que des détecteurs d'épaisseur et de rigidité (4, 3) sont disposés de telle sorte qu'une mesure de l'épaisseur ou de la rigidité peut être réalisée à chaque fois à la même hauteur des envois.
- Dispositif selon la revendication 3, caractérisé en ce que des détecteurs d'épaisseur et de rigidité (4, 3) sont disposés de telle sorte que la mesure peut être réalisée près du bord inférieur des envois qui circulent.
- Dispositif selon la revendication 3, caractérisé en ce qu'un grand nombre de détecteurs d'épaisseur et de rigidité (4, 3) sont disposés les uns au-dessus des autres, pour lequel on prévoit à chaque fois une exploitation par paires des valeurs mesurées issues de détecteurs d'épaisseur et de rigidité (4, 3) disposés à la même hauteur des envois.
- Dispositif selon les revendications 1 à 5, caractérisé en ce que dans le segment courbe (11) les bandes de transport sont guidées par un certain nombre de galets (1).
- Dispositif selon la revendication 6, caractérisé en ce que le ou les détecteurs de rigidité (3) sont disposés de telle sorte que la déviation des bandes de transport peut être mesurée dans la zone entre une première et un deuxième galet de renvoi (13, 14).
- Procédé pour mesurer la rigidité d'envois plats comportant une paire ou plusieurs paires de détecteurs d'épaisseur et de rigidité (4, 3), selon lequel on additionne à l'intérieur d'une fenêtre de temps Δt1 prédéterminée les valeurs mesurées par le ou les détecteurs d'épaisseur pour un envoi qui passe devant les détecteurs d'épaisseur et de rigidité, on additionne à l'intérieur d'une fenêtre de temps Δt2 prédéterminée les valeurs mesurées par le ou les détecteurs de rigidité, on forme pour une paire prédéterminée de détecteurs d'épaisseur et de rigidité (4, 3) la différence entre les valeurs additionnées et on l'utilise en tant que mesure pour la rigidité des envois qui passent.
- Procédé selon la revendication 8, caractérisé en ce que l'on effectue un contrôle pour savoir dans quel intervalle parmi un nombre prédéterminé d'intervalles se trouve la différence.
- Procédé selon les revendications 8 ou 9, caractérisé en ce qu'un nombre de paires de détecteurs d'épaisseur ou de rigidité détermine la différence maximale et celle-ci est utilisée en tant que mesure de la rigidité.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19600231A DE19600231C2 (de) | 1996-01-05 | 1996-01-05 | Vorrichtung und Verfahren zur Steifigkeitsmessung von flachen Sendungen |
| DE19600231 | 1996-01-05 | ||
| PCT/EP1996/005762 WO1997025162A1 (fr) | 1996-01-05 | 1996-12-20 | Dispositif et procede pour mesurer la rigidite de colis plats |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0975441A1 EP0975441A1 (fr) | 2000-02-02 |
| EP0975441B1 true EP0975441B1 (fr) | 2004-03-10 |
Family
ID=7782191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96945363A Expired - Lifetime EP0975441B1 (fr) | 1996-01-05 | 1996-12-20 | Dispositif et procede pour mesurer la rigidite de colis plats |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6032517A (fr) |
| EP (1) | EP0975441B1 (fr) |
| JP (1) | JP3923084B2 (fr) |
| DE (2) | DE19600231C2 (fr) |
| WO (1) | WO1997025162A1 (fr) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6585344B2 (en) * | 2001-03-22 | 2003-07-01 | Hewlett-Packard Development Company, L.P. | Systems and methods for automatically detecting a number of remaining sheets of print media |
| DE10141375C1 (de) | 2001-08-23 | 2003-03-13 | Siemens Dematic Ag | Vorrichtung zum Trennen von Sendungen in Dickenklassen |
| DE10210436A1 (de) * | 2002-03-09 | 2003-10-02 | Michael Licht | Verfahren und Vorrichtung zur zerstörungsfreien spektroskopischen Bestimmung von Analytkonzentrationen |
| JP2006500594A (ja) | 2002-09-27 | 2006-01-05 | シーメンス アクチエンゲゼルシヤフト | 扁平な送付物の曲げ強さの測定装置 |
| US7315007B2 (en) * | 2003-06-09 | 2008-01-01 | Siemens Dematic Corp. | Method and apparatus for stiffness and thickness detection in mail sorting systems |
| FR2909360B1 (fr) | 2006-11-30 | 2010-01-15 | Mag Systemes | Procede et dispositif de determination du degre de remplissage d'un contenant en enveloppes pleines |
| US8283588B2 (en) * | 2007-04-13 | 2012-10-09 | Siemens Industry, Inc. | Method and system for sorting postal mail |
| US9440264B2 (en) | 2007-04-13 | 2016-09-13 | Siemens Industry, Inc. | Method and system for weighing mail pieces |
| US7669470B2 (en) * | 2007-07-09 | 2010-03-02 | Siemens Industry, Inc. | Mail piece stiffness detector |
| DE102007034070B3 (de) * | 2007-07-20 | 2008-11-20 | Siemens Ag | Vorrichtung und Verfahren zum Erkennen von zu biegsamen Gegenständen |
| DE102007034853A1 (de) * | 2007-07-24 | 2009-02-05 | Jpk Instruments Ag | Verfahren und Vorrichtung zur verbesserten mikrofluidischen Versorgung von Proben und Messeinrichtung |
| DE102008005449B3 (de) * | 2008-01-22 | 2009-04-30 | Outotec Oyj | Verfahren und Vorrichtung zum Überwachen der Funktionsfähigkeit eines Wanderrostes |
| JP5117211B2 (ja) | 2008-02-05 | 2013-01-16 | 株式会社リコー | 画像形成装置 |
| DE102008035072A1 (de) | 2008-07-28 | 2010-02-25 | Siemens Aktiengesellschaft | Vorrichtung zum Ausschleusen eines flachen Gegenstands |
| US9330405B2 (en) * | 2013-03-08 | 2016-05-03 | Ncr Corporation | Methods and apparatus for fast item identification |
| FR3054036B1 (fr) | 2016-07-12 | 2018-07-13 | Solystic | Dispositif pour mesurer la rigidite d'articles de courrier |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4360108A (en) * | 1981-01-05 | 1982-11-23 | Joule' Technical Corporation | Method and apparatus for checking letter thickness |
| US4398421A (en) * | 1981-12-23 | 1983-08-16 | Hartford Steam Boiler Inspection And Insurance Company | Ultrasonic thickness measuring apparatus and method |
| NL181338C (nl) * | 1983-06-13 | 1987-08-03 | Nederlanden Staat | Controle-inrichting voor het onderzoeken van brieven. |
| DK155274C (da) * | 1986-05-30 | 1989-07-31 | Stormax Int As | Apparat til kontrol af traeemne |
| US5147169A (en) * | 1989-12-29 | 1992-09-15 | Agissar Corporation | Automated envelope handling system |
| GB9017420D0 (en) * | 1990-08-08 | 1990-09-19 | Ncr Co | Apparatus for assessing the stiffness of a sheet |
| DE4216146C1 (de) * | 1992-05-15 | 1993-12-02 | Licentia Gmbh | Verfahren und Vorrichtung zur berührungslosen Dickenmessung von flachen, durchlaufenden Gegenständen |
| GB9217568D0 (en) * | 1992-08-19 | 1992-09-30 | The Technology Partnership Ltd | Device and method for detecting residual content of emptied envelopes |
| FR2729310A1 (fr) * | 1995-01-12 | 1996-07-19 | Alcatel Postal Automation Syst | Dispositif pour detecter la presence d'un objet dur dans un pli de courrier |
-
1996
- 1996-01-05 DE DE19600231A patent/DE19600231C2/de not_active Expired - Fee Related
- 1996-12-20 WO PCT/EP1996/005762 patent/WO1997025162A1/fr not_active Ceased
- 1996-12-20 JP JP52479897A patent/JP3923084B2/ja not_active Expired - Fee Related
- 1996-12-20 US US09/066,290 patent/US6032517A/en not_active Expired - Lifetime
- 1996-12-20 EP EP96945363A patent/EP0975441B1/fr not_active Expired - Lifetime
- 1996-12-20 DE DE59610934T patent/DE59610934D1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| WO1997025162A1 (fr) | 1997-07-17 |
| EP0975441A1 (fr) | 2000-02-02 |
| JP3923084B2 (ja) | 2007-05-30 |
| DE19600231C2 (de) | 1998-02-19 |
| US6032517A (en) | 2000-03-07 |
| JP2000502609A (ja) | 2000-03-07 |
| DE19600231A1 (de) | 1997-07-17 |
| DE59610934D1 (de) | 2004-04-15 |
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