EP0975441A1 - Vorrichtung und verfahren zur steifigkeitsmessung von flachen sendungen - Google Patents
Vorrichtung und verfahren zur steifigkeitsmessung von flachen sendungenInfo
- Publication number
- EP0975441A1 EP0975441A1 EP96945363A EP96945363A EP0975441A1 EP 0975441 A1 EP0975441 A1 EP 0975441A1 EP 96945363 A EP96945363 A EP 96945363A EP 96945363 A EP96945363 A EP 96945363A EP 0975441 A1 EP0975441 A1 EP 0975441A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stiffness
- thickness
- sensors
- rigidity
- values
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 13
- 238000011156 evaluation Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 12
- 230000001965 increasing effect Effects 0.000 description 4
- 210000003041 ligament Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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 the stiffness of flat mail items in accordance with the preamble of the independent patent claims
- stiffness and thickness measurements For the processing of letters, postcards and similar flat mail items in automatic mail distribution systems, it is necessary to carry out stiffness and thickness measurements on all mail items, since these distribution systems can only properly process mail items that have certain predetermined parameters. Such measurements can in principle be carried out mechanically by lifting ! with Fuhlrolie and inductive sensor However, undesirable vibrations occur at high transport speeds, e.g. greater than 2.9 m / s, so that stiffness and thickness cannot be determined exactly and separately with this functional principle. A mechanical stiffness measurement also requires a large amount of space and, like all mechanical devices, is subject to increased wear. The above applies in particular to unevenly thick or rigid objects
- the procedure according to the invention has the advantage of a smaller space requirement, less wear and a higher accuracy.
- the precise measurement of unevenly thick and rigid objects is also possible
- FIG. 1 shows a schematic diagram of a device according to the invention from above
- Fig. 1 shows a schematic diagram of a device according to the invention from above, i. H. perpendicular to the surface of the flat items.
- Conveyor belts 2 are guided over a number of rollers 1, so that a transport path 10 is formed.
- the conveyor belts 2 are designed as cover strips, between which the mail items are held in a force-locking manner.
- the transport route has at least one curved section 11 and at least one straight section 12.
- a stiffness sensor 3 is arranged in the area of the curved section, and a thickness sensor 4 is arranged in the area of the straight section.
- the flat shipments are transported in the direction of arrow in the transport route 10.
- the conveyor belts are elastic and adapt to the thickness of the shipment.
- the stiffness of a flat consignment causes an additional deflection of the outer bands during transport, in particular in the vicinity of the front and rear edges of the consignment.
- On the straight section of the transport route there is only a change in the thickness of the conveyor belt-shipment system according to the thickness of the shipment.
- Two thickness sensors 4 arranged one above the other measure the current thickness of the system of conveyor belts - flat mailpiece substantially perpendicular to the direction of transport of the mailpiece.
- a laser, infrared or ultrasound scanning sensor is provided as the thickness sensor.
- the change in the distance s is preferably measured by means of interference.
- laser scanning sensors are preferred.
- a laser, infrared or ultrasound scanning sensor is also used as the stiffness sensor 3, which detects the change in distance due to the stiffness of the flat mail items. Thickness and stiffness sensors for determining the stiffness of the mail item passing through are connected to an evaluation device 15, the functioning of which is described in detail below.
- a plurality of thickness or stiffness sensors are preferably arranged one above the other, which enable the shipment to be assessed over the entire shipment height.
- the thickness DZW is preferably measured. the rigidity due to sensor pairs on the same hone of the consignments.
- An arrangement of the stiffness and thickness sensor in the area of the lower edge of the mail items is preferred. This means that deposits such as B key, can be recognized.
- the stiffness sensors in the curved area 11 are preferably arranged such that the deflection of the outer conveyor belts in the area between a first and a second deflecting roller 13, 14 can be avoided.
- a measure for the stiffness of a mail item that is guided past the thickness and stiffness sensors is determined in the following manner by the evaluation device 15.
- 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 mail item with permissible stiffness and thickness. It can be seen in FIG. 3 that an increase in thickness (curve a) and an increased deflection (curve b) were measured centered around the time of -34.8 ms in the time window.
- FIG. 4 shows measured values corresponding to FIG. 3 for a letter with a permissible thickness and excessive rigidity.
- the values measured by the thickness sensor are added up within a predetermined time window ⁇ t1. Also from that Stiffness sensor measured values added up within a predetermined time window ⁇ t2.
- the two time windows ⁇ t1 and ⁇ t2 are preferably chosen to be of equal size. 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. Compared to a method in which only the extreme values are used, the probability of misinterpretation is much lower. In addition, this procedure also provides clear results for borderline cases.
- Curve b1 corresponds to the measured values of a sensor arranged in the area of the lower letter edge; curve b2 ⁇ en values of a stiffness sensor arranged in the middle area. Curve b1 clearly shows maxima which indicate the increased stiffness due to the insert, while curve b2 does not have such maxima. Accordingly, in a preferred embodiment of the invention, a number of sensors for measuring stiffness and thickness are arranged essentially over the entire height of the conveyor belts.
- the maximum difference between the summed values is determined for a number of pairs of thickness and rigidity sensors and the maximum is used as a measure of the rigidity.
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
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19600231 | 1996-01-05 | ||
| DE19600231A DE19600231C2 (de) | 1996-01-05 | 1996-01-05 | Vorrichtung und Verfahren zur Steifigkeitsmessung von flachen Sendungen |
| PCT/EP1996/005762 WO1997025162A1 (de) | 1996-01-05 | 1996-12-20 | Vorrichtung und verfahren zur steifigkeitsmessung von flachen sendungen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0975441A1 true EP0975441A1 (de) | 2000-02-02 |
| EP0975441B1 EP0975441B1 (de) | 2004-03-10 |
Family
ID=7782191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96945363A Expired - Lifetime EP0975441B1 (de) | 1996-01-05 | 1996-12-20 | Vorrichtung und verfahren zur steifigkeitsmessung von flachen sendungen |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6032517A (de) |
| EP (1) | EP0975441B1 (de) |
| JP (1) | JP3923084B2 (de) |
| DE (2) | DE19600231C2 (de) |
| WO (1) | WO1997025162A1 (de) |
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 |
| US7096743B2 (en) | 2002-09-27 | 2006-08-29 | Siemens Aktiengesellschaft | Device for measuring the bending strength of flat consignments |
| 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 |
| US9440264B2 (en) | 2007-04-13 | 2016-09-13 | Siemens Industry, Inc. | Method and system for weighing mail pieces |
| US8283588B2 (en) * | 2007-04-13 | 2012-10-09 | Siemens Industry, Inc. | Method and system for sorting postal mail |
| 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/de not_active Ceased
- 1996-12-20 DE DE59610934T patent/DE59610934D1/de not_active Expired - Lifetime
- 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/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9725162A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1997025162A1 (de) | 1997-07-17 |
| JP3923084B2 (ja) | 2007-05-30 |
| DE19600231C2 (de) | 1998-02-19 |
| DE19600231A1 (de) | 1997-07-17 |
| EP0975441B1 (de) | 2004-03-10 |
| US6032517A (en) | 2000-03-07 |
| DE59610934D1 (de) | 2004-04-15 |
| JP2000502609A (ja) | 2000-03-07 |
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