EP2010873A1 - Balance compteuse avec détecteur de hinkley à niveaux multiples - Google Patents

Balance compteuse avec détecteur de hinkley à niveaux multiples

Info

Publication number
EP2010873A1
EP2010873A1 EP07701854A EP07701854A EP2010873A1 EP 2010873 A1 EP2010873 A1 EP 2010873A1 EP 07701854 A EP07701854 A EP 07701854A EP 07701854 A EP07701854 A EP 07701854A EP 2010873 A1 EP2010873 A1 EP 2010873A1
Authority
EP
European Patent Office
Prior art keywords
detector
hinkley
counting scale
jump
weight
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Withdrawn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
EP07701854A
Other languages
German (de)
English (en)
Inventor
Roland Nägele
Wolfram Luithardt
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.)
Digi Sens AG
Fachhochschule Konstanz
Original Assignee
Digi Sens AG
Fachhochschule Konstanz
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 Digi Sens AG, Fachhochschule Konstanz filed Critical Digi Sens AG
Publication of EP2010873A1 publication Critical patent/EP2010873A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/40—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
    • G01G19/42—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight for counting by weighing

Definitions

  • a counting scale as a mass or force meter according to the preamble of claim 1.
  • Counting scales are known and commonly used. If a number n of parts is to be counted and the counting is too time-consuming, because, for example, n is large, counting scales are used. Often the so-called division method is used. The container is weighed with the parts, the container empty weight is subtracted and the net weight is divided by the weight of a single piece. However, this method fails when the part weight is not well known or varies greatly from part to part. Thus, for example, with an inaccuracy of +/- 5% already with 11 parts it can no longer be assumed that the calculated number is correct. This maximum number of parts that can be determined reliably is calculated using the formula
  • n ⁇ iax (l + d) / 2d
  • d is the determined or known inaccuracy. This value is independent of the weight of the parts.
  • algorithms have been developed in production technology, which analyzes the increasing weight by inserting parts and assigns them to a whole number of parts. These methods are known and used successfully, but fail when a large number of parts are loaded at the same time or the noise level of the balance (ie the standard deviation of the measured values) is of the order of magnitude Part weight is. If the measured values are so noisy, it is no longer possible to reliably detect a possible jump caused by the addition of another part; he goes under in the noise.
  • the object of the invention is to reliably count even parts with varying parts weight and to be able to reliably evaluate very noisy measured values.
  • the solution of the problem is reflected in the characterizing part of claim 1 with respect to its main features and in the lower claims with respect to further advantageous features.
  • FIG. 1 shows a series of individual measurement results s (t) of the mass of a first and of an additional object
  • FIG. 2 shows the time profile of a test value h
  • FIG. 1 shows such a series of noisy measured values s (t).
  • ⁇ o is the output mean, ⁇ i that after inserting a part.
  • the jump height m is determined a priori from the mean of the weights of a sufficient number of parts to be counted. If such a jump has occurred, the Hinkley detector provides an estimate of the jump time.
  • the method assumes that the mean ⁇ 0 and the expected increase m are known in advance. If a measured value s (t) exceeds the value ⁇ o + m / 2, this indicates a jump; if it is lower, this indicates that no jump has taken place.
  • the Hinkley detector forms the cumulative sum from these values
  • Fig. 2 shows the time course of a test value h (t). If h (t) exceeds a certain threshold ⁇ , this is taken as criterion for the jump recognition.
  • the threshold value ⁇ must be chosen so large that h (t) does not exceed it due to noise-induced short increases (no false alarm) and so small that the threshold is quickly exceeded after a jump and the jump is thus recognized.
  • DHD Dynamic Hinkley Detector
  • Figure 4 shows the traces of the test values for this example, hi (solid), ht 2 (solid), and I1 3 (dashed) rising, except for brief noiseless decay, I1 4 (solid), and hs (dash dot ) deviate from 0 only by noise.
  • h 2 exceeds ⁇ first, that is, the MLHD diagnoses a jump to the new new level ⁇ o + iti 2 .

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

L'invention concerne une balance compteuse avec un détecteur de Hinkley à niveaux multiples, laquelle peut détecter les sauts d'un signal s(t) fortement bruité d'une valeur moyenne (niveau) vers une nouvelle valeur moyenne. Le signal s(t) mesuré est testé simultanément à plusieurs hauteurs de saut mi hypothétiques. Pour chaque hauteur de saut, une valeur de test hi(t) est formée dans un algorithme récursif non linéaire. Il est possible de déterminer fiablement, à partir de la valeur de test hi(t) qui atteint une valeur de seuil ε en premier, le nombre des parties qui ont été ajoutées ou éventuellement supprimées.
EP07701854A 2006-04-21 2007-02-02 Balance compteuse avec détecteur de hinkley à niveaux multiples Withdrawn EP2010873A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00652/06A CH704747B1 (de) 2006-04-21 2006-04-21 Zählwaage mit Multilevel-Hinkley-Detektor.
PCT/CH2007/000054 WO2007121595A1 (fr) 2006-04-21 2007-02-02 Balance compteuse avec détecteur de hinkley à niveaux multiples

Publications (1)

Publication Number Publication Date
EP2010873A1 true EP2010873A1 (fr) 2009-01-07

Family

ID=36256741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07701854A Withdrawn EP2010873A1 (fr) 2006-04-21 2007-02-02 Balance compteuse avec détecteur de hinkley à niveaux multiples

Country Status (4)

Country Link
US (1) US20100147599A1 (fr)
EP (1) EP2010873A1 (fr)
CH (1) CH704747B1 (fr)
WO (1) WO2007121595A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3035551A1 (fr) 2014-12-19 2016-06-22 EMH metering GmbH & Co. KG Transmission de donnees par un reseau electrique avec un consommateur modulant sa puissance et un compteur d'electricite

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018203036A1 (de) * 2018-03-01 2019-09-19 Volkswagen Aktiengesellschaft "Diagnoseverfahren zur Sprungerkennung einer kontinuierlichen Messgröße, Steuerung zur Durchführung des Verfahrens"

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4512428A (en) * 1983-05-05 1985-04-23 K-Tron International, Inc. Weighing apparatus and method
DE3415962A1 (de) * 1984-04-28 1985-10-31 Sartorius GmbH, 3400 Göttingen Verfahren zur initialisierung einer zaehlwaage und zaehlwaage zur durchfuehrung des verfahrens
GB8813399D0 (en) * 1988-06-07 1988-07-13 Percell Group Ltd Method & apparatus for determining number/value of weighed items
GB0210945D0 (en) * 2002-05-14 2002-06-19 Volumatic Ltd "Apparatus for counting articles by weight"
GB0618484D0 (en) * 2006-09-20 2006-11-01 Cashmaster Internat Ltd Error cancelling system
CN101506631B (zh) * 2006-09-27 2012-06-20 株式会社岛津制作所 电子天平

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007121595A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3035551A1 (fr) 2014-12-19 2016-06-22 EMH metering GmbH & Co. KG Transmission de donnees par un reseau electrique avec un consommateur modulant sa puissance et un compteur d'electricite
DE102014018809A1 (de) 2014-12-19 2016-06-23 Emh Metering Gmbh & Co. Kg Übertragung über ein Stromnetz mit modulierbarem Verbraucher und Elektrizitätszähler

Also Published As

Publication number Publication date
CH704747B1 (de) 2012-10-15
WO2007121595A1 (fr) 2007-11-01
US20100147599A1 (en) 2010-06-17

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