EP0631681A1 - Procede permettant de surveiller et/ou de detecter les modifications, dues a une sollicitation, de l'etat de fonctionnement d'une machine motrice electrique - Google Patents

Procede permettant de surveiller et/ou de detecter les modifications, dues a une sollicitation, de l'etat de fonctionnement d'une machine motrice electrique

Info

Publication number
EP0631681A1
EP0631681A1 EP94902592A EP94902592A EP0631681A1 EP 0631681 A1 EP0631681 A1 EP 0631681A1 EP 94902592 A EP94902592 A EP 94902592A EP 94902592 A EP94902592 A EP 94902592A EP 0631681 A1 EP0631681 A1 EP 0631681A1
Authority
EP
European Patent Office
Prior art keywords
wear
engine
degree
contributions
detected
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Withdrawn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
EP94902592A
Other languages
German (de)
English (en)
Inventor
Hanspeter Duss
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.)
Grapha Holding AG
Original Assignee
Grapha Holding 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 Grapha Holding AG filed Critical Grapha Holding AG
Publication of EP0631681A1 publication Critical patent/EP0631681A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/3476—Load weighing or car passenger counting devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C3/00—Registering or indicating the condition or the working of machines or other apparatus, other than vehicles

Definitions

  • the invention relates to a method for monitoring and / or determining the operating state of an electrically operated engine, which changes as a result of a load, by measuring one or more operating parameters.
  • An engine lies, among other things, in achieving greater operational reliability with regard to product liability. This known type of detection of similar operating parameters is complex and inadequate to be able to obtain a binding result or to make a statement about the actual operating state and the further useful life or the life expectancy of an engine.
  • this object is achieved in that the recorded operating parameters are transferred to an electronic, non-volatile memory module.
  • This allows a more precise assessment of the operating state of an engine, both qualitative, for example a max. Operating temperature as well as quantitative, the duty cycle, operating parameters are recorded.
  • the operating parameters affected include: in addition to the individual weight loads, the duty cycle during which the devices used for the method according to the invention are activated; the operating time during which an engine operates; the number of switching operations for driving an engine; the operating temperatures; the engine power of an engine, for example in the form of running times of individual power ranges.
  • the method according to the invention proves to be particularly favorable when measuring stresses of a mechanical or physical type, in that the wear of the engine promoting, various influences recorded and added as wear contributions to corresponding degrees of wear, respectively. being transformed.
  • the wear contributions can each be converted to a uniform degree of wear.
  • the method according to the invention can advantageously be used when measuring individual weight loads, taking into account the duration of the load, these stresses being added up after conversion into a corresponding wear contribution, if further influences promoting the wear of the engine are detected and after conversion into a corresponding wear contribution the wear contributions which also determine the degree of wear due to the weight loads are added.
  • the number of switching operations or cycles influencing the wear of the engine or the resulting switch-on and switch-off load moments can preferably be recorded.
  • the conveying speed can be recorded as a value increasing the wear of the engine and can be taken into account when calculating the current wear contribution.
  • the acceleration and / or deceleration of the drive movement can be recorded and added to the existing degrees of wear after conversion into a wear contribution or into wear contributions.
  • the degree of wear of the engine can also be relative high ambient temperatures, the changeability and / or the heat generated by the energy supplied in the engine are noticeably influenced, so that their detection and recognition improves the objectivity of the degree of wear.
  • the assessment of the degree of wear can optionally be based on the individual physical influences.
  • the degree of wear achieved on the engine can expediently be compared and evaluated with a corresponding adjustable target value.
  • a signal can advantageously be triggered if a wear level setpoint value or a certain wear contribution is exceeded.
  • the degree of wear and its condition has proven to be suitable when determining the (still) expected service life of an engine.
  • the evaluation of the wear contributions can be carried out on the electrical engine or at a distance therefrom, for example on a PC.
  • a lifting device such as one Chain or cable hoist, a traveling crane or the like, a slewing crane or a monorail, a suspension crane, a lift or other conveyor devices overcoming / covering a load path or a processing machine, for example a drilling or grinding machine, an electric motor or a forklift , a wear contribution resulting therefrom can expediently be determined by measuring the effective electrical power on at least one winding of the drive motor.
  • FIG. 1 shows a circuit diagram relating to the invention for an engine designed as a hoist
  • FIG. 2 shows the degree of wear on the basis of determined wear contributions of a hoist according to FIG. 1.
  • FIG. 1 shows an electrical control unit 1 which can be connected to a power source and to which switches 2, 3, 4 are assigned for actuating a lifting device 5. These switches 2, 3, 4 are intended for the functions of lifting, lowering and overdrive of a load 6 to be moved.
  • a motor 7 Connected to the control unit 1 is a motor 7 which is electrically connected to it and which is coupled to a lifting gear 8.
  • the switches 2, 3, 4 are nevertheless connected to a data acquisition device 9, in which the individual operating parameters are recorded in each case.
  • One or more are connected to the data acquisition device 9 connected to the power line 10 leading from the control unit 1 to the motor 7 measuring lines 11, through which the power consumed by the motor 7 can be computed.
  • a further connection 12 leads to the data acquisition device 9 in order to record the engine temperature.
  • the data is transmitted from the data acquisition device 9 in order to a data evaluation device 14 and stored.
  • the data evaluation device 14 and a so-called electronic, non-volatile memory module essentially consists of a microprocessor with a non-volatile memory. The received data are evaluated in the microprocessor and can be converted into a corresponding wear contribution and / or processed further.
  • the further processing also provides the possibility that if the lifting device 5 or the motor 7 is overloaded, the control unit 1 is switched off via an emergency stop line 15 or the lifting device 5 is switched off.
  • Output line 16 leads to a reading unit (not shown), for example a PC, which displays the data in a readable manner.
  • FIG. 2 shows, in a simple exemplary manner, in a diagram various wear contributions resulting from physical influence on an engine. So u.a. the wear contributions are represented by the number of switching cycles according to line 17 and by the weight load according to line 18.
  • the cumulatively recorded wear contributions are identified by line 19 for the degree of wear of the engine, which appears on the vertical coordinate axis, while the horizontal coordinate axis conveys the useful life of the engine. On the latter, sections a and b each show different times and stresses on an engine leading to wear contributions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
  • Testing Of Engines (AREA)

Abstract

L'invention concerne un procédé servant à surveiller et/ou à détecter les modifications, dues à une sollicitation, de l'état de fonctionnement d'une machine motrice électrique, selon lequel les paramètres de fonctionnement mesurés sont transmis à une mémoire non volatile.
EP94902592A 1993-01-19 1994-01-10 Procede permettant de surveiller et/ou de detecter les modifications, dues a une sollicitation, de l'etat de fonctionnement d'une machine motrice electrique Withdrawn EP0631681A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH00148/93A CH687150A5 (de) 1993-01-19 1993-01-19 Verfahren zur Ueberwachung und/oder Feststellung des sich jeweils durch eine Beanspruchung aendernden Betriebszustandes einer elektrisch betriebenen Kraftmaschine.
CH148/93 1993-01-19
PCT/CH1994/000004 WO1994017496A1 (fr) 1993-01-19 1994-01-10 Procede permettant de surveiller et/ou de detecter les modifications, dues a une sollicitation, de l'etat de fonctionnement d'une machine motrice electrique

Publications (1)

Publication Number Publication Date
EP0631681A1 true EP0631681A1 (fr) 1995-01-04

Family

ID=4180345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94902592A Withdrawn EP0631681A1 (fr) 1993-01-19 1994-01-10 Procede permettant de surveiller et/ou de detecter les modifications, dues a une sollicitation, de l'etat de fonctionnement d'une machine motrice electrique

Country Status (5)

Country Link
US (1) US5659468A (fr)
EP (1) EP0631681A1 (fr)
JP (1) JPH07506206A (fr)
CH (1) CH687150A5 (fr)
WO (1) WO1994017496A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6321208B1 (en) 1995-04-19 2001-11-20 Brightstreet.Com, Inc. Method and system for electronic distribution of product redemption coupons
DE19716520B4 (de) * 1997-04-19 2007-04-19 Robert Bosch Gmbh Als Schaltung ausgebildete Vorrichtung zur Erfassung von Betriebsgrößen von Elektromotoren sowie Elektromotor
US6002232A (en) 1997-08-15 1999-12-14 Iowa State University Research Foundation, Inc. Robust vibration suppression methods and systems
US6610917B2 (en) * 1998-05-15 2003-08-26 Lester F. Ludwig Activity indication, external source, and processing loop provisions for driven vibrating-element environments
LU90840B1 (en) * 2001-09-25 2003-03-26 Delphi Tech Inc Method for controlling the operation of a system sub-system or component
US7063306B2 (en) * 2003-10-01 2006-06-20 Paccar Inc Electronic winch monitoring system
US7511442B2 (en) * 2004-10-28 2009-03-31 Ab Skf Linear drive device
GB2430039B (en) * 2005-09-07 2008-06-04 Motorola Inc Product age monitoring device and method of use of the device
EP2051213A1 (fr) * 2007-10-19 2009-04-22 Siemens Aktiengesellschaft Machine-outil, machine de production et/ou robot

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2020432B (en) * 1978-05-06 1982-07-28 Arcubos Ltd Strain detecting devices
DE3048964A1 (de) * 1980-12-24 1982-07-08 Mannesmann AG, 4000 Düsseldorf Verfahren und vorrichtung zum ermitteln der belastung von hebezeugen
AT387464B (de) * 1982-10-29 1989-01-25 Voest Alpine Ag Anordnung zur ueberwachung des schaedigungsgrades durch materialermuedung bei bauwerken, fahrzeugen, maschinen u.dgl.
US4636962A (en) * 1983-05-24 1987-01-13 Columbus Mckinnon Corporation Microprocessor-controlled hoist system
GB2215148B (en) * 1988-02-18 1992-04-08 Fenner Co Ltd J H A monitoring system
US5133465A (en) * 1990-01-29 1992-07-28 Whiting Corporation Bridge crane electric motor control system
FR2663473A1 (fr) * 1990-06-19 1991-12-20 Systemes Productiques Ingenier Dispositif et procede de limitation de charge pour appareil mecanique ou similaire, utilisant au moins un organe moteur de type electrique.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9417496A1 *

Also Published As

Publication number Publication date
US5659468A (en) 1997-08-19
WO1994017496A1 (fr) 1994-08-04
JPH07506206A (ja) 1995-07-06
CH687150A5 (de) 1996-09-30

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