CA2443748A1 - Method of weight measurement using moving weigh conveyor - Google Patents

Method of weight measurement using moving weigh conveyor Download PDF

Info

Publication number
CA2443748A1
CA2443748A1 CA002443748A CA2443748A CA2443748A1 CA 2443748 A1 CA2443748 A1 CA 2443748A1 CA 002443748 A CA002443748 A CA 002443748A CA 2443748 A CA2443748 A CA 2443748A CA 2443748 A1 CA2443748 A1 CA 2443748A1
Authority
CA
Canada
Prior art keywords
weight
slope
control
waveform
point
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
Application number
CA002443748A
Other languages
French (fr)
Other versions
CA2443748C (en
Inventor
Timothy W. Ring
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.)
Formax Inc
Original Assignee
Formax, Inc.
Timothy W. Ring
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 Formax, Inc., Timothy W. Ring filed Critical Formax, Inc.
Publication of CA2443748A1 publication Critical patent/CA2443748A1/en
Application granted granted Critical
Publication of CA2443748C publication Critical patent/CA2443748C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/14—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers using totalising or integrating devices
    • G01G11/16—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers using totalising or integrating devices being electrical or electronic means
    • G01G11/18—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers using totalising or integrating devices being electrical or electronic means using digital counting

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Sorting Of Articles (AREA)
  • Control Of Conveyors (AREA)

Abstract

A control for a continuously moving weighing conveyor first triggers on a predetermined sensed weight (104). The control determines a first inflection point on the weight waveform defined as the "maximum positive slope" (106).
Then the control begins recording weight samples at a sampling rate. The control checks the weight waveform of sampled weights for a slope which is a first pre-selected percentage of the maximum slope but negative in slope value "weight-off-scale" point (110). The control then looks backward through the recorded data of weight samples to find another point which has a slope which is a second preselected negative percentage of the maximum positive slope "end sample position"(114). Then a "start sample position" (118) is determined to fall within, or at the start of, a flat region of the waveform. The values within the sample period are then averaged to determine a static weight.
CA002443748A 2001-04-09 2001-04-09 Method of weight measurement using moving weigh conveyor Expired - Fee Related CA2443748C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2001/040474 WO2002084232A1 (en) 2001-04-09 2001-04-09 Method of weight measurement using moving weigh conveyor

Publications (2)

Publication Number Publication Date
CA2443748A1 true CA2443748A1 (en) 2002-10-24
CA2443748C CA2443748C (en) 2008-08-19

Family

ID=21742931

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002443748A Expired - Fee Related CA2443748C (en) 2001-04-09 2001-04-09 Method of weight measurement using moving weigh conveyor

Country Status (4)

Country Link
EP (1) EP1390700A4 (en)
CA (1) CA2443748C (en)
NO (1) NO20034500L (en)
WO (1) WO2002084232A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010009641A1 (en) * 2010-02-27 2011-09-01 Bizerba Gmbh & Co. Kg Libra
DE102011051254C5 (en) * 2011-06-22 2016-06-16 Schröder Maschinenbau KG Method for mass weighing on a conveyor and device for treating food products
DE102011115235A1 (en) * 2011-09-28 2013-03-28 Bizerba Gmbh & Co. Kg METHOD FOR GENERATING A TEACH DATA RECORD FOR DYNAMIC WEIGHING
WO2016119796A1 (en) 2015-01-28 2016-08-04 Marel A/S Controlled batch distribution
CN110849460B (en) * 2019-12-16 2024-04-02 龙岩烟草工业有限责任公司 Precision detection device, humectant modulation system and precision detection method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4794996A (en) * 1988-02-26 1989-01-03 Amca International Group Control for an automatic slicing machine
US5109936A (en) * 1989-06-28 1992-05-05 Cahin Systems Corporation Dynamic weight control system
US4951763A (en) * 1989-11-13 1990-08-28 Hi-Speed Checkweigher Co., Inc. Checkweigher
SE468491B (en) * 1991-05-23 1993-01-25 Lundman Ulf Pad Lastceller Ab PROCEDURES FOR DETERMINING A DYNAMIC WEIGHT
US5300736A (en) * 1992-03-12 1994-04-05 Hi-Speed Checkweigher Co., Inc. Adaptive timing in-motion checkweigher
JPH09243439A (en) * 1996-03-06 1997-09-19 Matsushita Electric Ind Co Ltd Axle weight measuring apparatus
SE510761C2 (en) * 1996-12-18 1999-06-21 Vaagagenturen Waanelid Ab Weighing device and method of weighing vehicles in motion

Also Published As

Publication number Publication date
NO20034500D0 (en) 2003-10-08
NO20034500L (en) 2003-10-08
EP1390700A1 (en) 2004-02-25
CA2443748C (en) 2008-08-19
WO2002084232A1 (en) 2002-10-24
EP1390700A4 (en) 2008-10-15

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20150409