EP1586011A2 - Procede et dispositif pour suivre la position d'outils et/ou de dispositifs de test - Google Patents

Procede et dispositif pour suivre la position d'outils et/ou de dispositifs de test

Info

Publication number
EP1586011A2
EP1586011A2 EP03788837A EP03788837A EP1586011A2 EP 1586011 A2 EP1586011 A2 EP 1586011A2 EP 03788837 A EP03788837 A EP 03788837A EP 03788837 A EP03788837 A EP 03788837A EP 1586011 A2 EP1586011 A2 EP 1586011A2
Authority
EP
European Patent Office
Prior art keywords
tracked
identification code
tool
tools
test device
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Withdrawn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
EP03788837A
Other languages
German (de)
English (en)
Inventor
Thomas Achatz
Michael ÖSTREICHER
Mike Lischke
Joachim Müller
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.)
Duerr Somac GmbH
Original Assignee
Duerr Somac GmbH
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
Priority claimed from DE2002156557 external-priority patent/DE10256557B4/de
Application filed by Duerr Somac GmbH filed Critical Duerr Somac GmbH
Publication of EP1586011A2 publication Critical patent/EP1586011A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/12—Program control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers
    • G05B19/128—Program control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers the workpiece itself serves as a record carrier, e.g. by its form, by marks or codes on it
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/49—Nc machine tool, till multiple
    • G05B2219/49302—Part, workpiece, code, tool identification

Definitions

  • the invention relates to a method and a device for tracking the position of tools and / or testing devices on movable processing lines in closed rooms, in particular assembly lines for automobile manufacture.
  • the scan information contains an ID or production number that can be uniquely assigned to the vehicle and is recorded with the aid of data carriers or barcodes attached to the vehicle or vehicle carrier.
  • the scan information is used to access the database of the production control system via a computer system.
  • the vehicle parameters of the scanned vehicle are called up there.
  • the vehicle is tracked from the scan point, either with the aid of a scan of the conveyor line or with speed information provided by the conveyor system. The position of the vehicle and its parameters are thus constantly available over a specific section (DE 41 13 556.3).
  • the object of the invention is to provide a method for tracking the position of tools and / or testing devices on movable processing lines. Furthermore, a device is to be created with which it is possible to track the position of tools and / or test devices on movable processing lines.
  • the object is achieved by the technical features specified in the patent claims.
  • information about the position of a tool or a test device is available at all times.
  • This also includes the transport of a tool or a test device to a vehicle that is to be processed, carried out by the worker. sen.
  • a dynamic path tracking is thus carried out. This allows the worker to store the tools or test equipment according to a work process that is optimized for himself. As a result, worker times are saved and tools and test equipment can be exchanged quickly. Position management for several tools and / or test devices is also possible.
  • the time slice for the cycle of the signal transmission is optimized by determining the signal transit times between the tools and / or test devices and the receiver systems.
  • the length of the signal time is used for error detection in the interaction of several tools and / or test devices and for error elimination in the subsequent process.
  • the invention is explained below using an exemplary embodiment.
  • the drawing shows a section of an assembly line for motor vehicles and several test devices to be tracked.
  • the assembly line 1 transports the motor vehicles 2 to be tested into a section of the assembly line 1 in which the motor vehicles 2 are tested.
  • this section of the assembly line 1 there are three mobile test devices 3; 4; 5 in any position on both sides of the assembly line 1.
  • the positions of the test equipment 3; 4; 5 are constantly being determined. Up to four test devices 3; 4; 5 are monitored.
  • each motor vehicle 2 is scanned and recorded.
  • the test parameters are transferred via the production control system. All registered motor vehicles 2 are spatially tracked in the test section.
  • the worker takes a test device 3; 4; 5 and moves towards the motor vehicle 2 to be tested.
  • the moving test device 3; 4; 5 is dynamically tracked by position detection.
  • the base station 7 transmits the test parameters of the motor vehicle 2, which are in position coincidence with the moving test device 3; 4; 5 is located on this test device 3; 4; 5.
  • the worker places the test device 3; 4; 5 in the motor vehicle 2 that is in the same position and actuates the start button of the test device 3; 4; 5.
  • a final check or correction of the data of the motor vehicle 2 to be tested is now carried out by the base station 7 and its transmission to the test device 3; 4; 5.
  • the test is then carried out and the result data of the test device 3; 4; 5 sent to the base station 7.
  • test device 3; 4; 5 The worker removes the test device 3; 4; 5 from the tested motor vehicle 2 and sets the test device 3; 4; 5 next to the assembly line 1 at the point that is optimal for him to resume for the next test process.
  • This test device 3; 4; 5 is continuously dynamically tracked by the position detection and recorded in its end position.
  • the base station 7 pushes the test devices 3 by radio; 4; 5 to send their identification codes via their infrared transmitters. With this push each test device 3; 4; 5 communicated an offset time that a simultaneous transmission of several test devices 3; 4; 5 prevented. This establishes a time slice principle.
  • the offset time is specified by dividing a maximum cycle time in which each test device 3; 4; 5 transmitted their identification code to the receiver and the base station 7 has read out all the infrared position receivers 8. With a cycle time of 300 milliseconds, a worker can thus cover a distance of approximately 0.5 meters with a test device 3; 4; 5 put back. This is recorded dynamically.
  • Infrared position receivers 8 are arranged on both sides of the assembly line 1 in the test section at a distance of, for example, one meter. Each infrared position receiver 8 receives the signals from up to four test devices, provided that they are in its opening angle. Each test device 3; 4; 5 is provided with a time stamp and stored in the infrared position receiver 8. This information is read out cyclically by the base station 7. The infrared position receivers 8 are addressed individually by the base station 7 via an identification code. The infrared position receiver 8 can be synchronized in time via a broadcast message. This is essential in relation to the use of the time stamp.
  • the system can be optimized during runtime by recognizing the real ones Times of transmission of the identification codes of each test device 3; 4; 5 about the timestamp during reception. This enables the base station 7 the offset times for each test device 3; 4; 5 to change. At the same time, errors are recognized here and can be corrected.
  • test device 3; 4; 5 The detection of the test device 3; 4; 5 is carried out on both sides of assembly line 1.
  • the center of gravity is calculated from this information. This method also enables the test device 3 to rotate; 4; 5 around its own axis. The focus of the situation remains unchanged.
  • the infrared light energy with which the test equipment 3; 4; 5 send out their identification codes can be controlled by software. This makes the system adaptable to environmental conditions.
  • the method and device for tracking the position of tools can be used in the same embodiment.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Automatic Assembly (AREA)
  • Multi-Process Working Machines And Systems (AREA)

Abstract

L'objectif de l'invention est de créer un procédé et un dispositif pour suivre la position d'outils et/ou de dispositifs de test sur des lignes de traitement mobiles. A cet effet, chaque outil et/ou chaque dispositif de test à suivre (3, 4, 5) est pourvu de plusieurs diodes émettrices infrarouges, qui émettent de manière cyclique un code d'identification de l'outil et/ou du dispositif de test (3, 4, 5) à suivre. De plus, le cycle de l'émission du code d'identification se produit d'après un principe de tranche d'exécution, de façon à empêcher la falsification d'informations par plusieurs outils et/ou dispositifs de test (3, 4, 5). Des systèmes (8) de réception de la position sont disposés sur les deux côtés de la ligne de traitement (1) dans la zone de suivi, de façon à détecter le code d'identification émis, lesdits codes d'identification étant pourvus d'un horodateur par lesdits systèmes puis stockés. Lesdits systèmes (8) de réception de la position sont couplés entre eux par un système de bus, chaque système (8) de réception de la position étant caractérisé par son propre code d'identification. Enfin, une station de base (7) calcule le temps de propagation du signal et la position de l'outil et/ou du dispositif de test à suivre, à partir des temps d'émission de la diode émettrice infrarouge et des temps de réception dans un système (8) de réception de la position.
EP03788837A 2002-12-04 2003-12-02 Procede et dispositif pour suivre la position d'outils et/ou de dispositifs de test Withdrawn EP1586011A2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE2002156557 DE10256557B4 (de) 2002-12-04 2002-12-04 Verfahren zur Positionsverfolgung von Prüfeinrichtungen
DE10256557 2002-12-04
DE20316018U DE20316018U1 (de) 2002-12-04 2003-10-18 Vorrichtung zur Positionsverfolgung von Werkzeugen und/oder Prüfeinrichtungen
DE20316018U 2003-10-18
PCT/DE2003/003965 WO2004050460A2 (fr) 2002-12-04 2003-12-02 Procede et dispositif pour suivre la position d'outils et/ou de dispositifs de test

Publications (1)

Publication Number Publication Date
EP1586011A2 true EP1586011A2 (fr) 2005-10-19

Family

ID=32471496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03788837A Withdrawn EP1586011A2 (fr) 2002-12-04 2003-12-02 Procede et dispositif pour suivre la position d'outils et/ou de dispositifs de test

Country Status (2)

Country Link
EP (1) EP1586011A2 (fr)
WO (1) WO2004050460A2 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3637236A1 (de) * 1986-11-03 1988-05-19 Stabil Elektronik Gmbh Steuerungs- und ueberwachungsanordnung fuer ein werkzeug
US5742238A (en) * 1995-09-01 1998-04-21 Emtrak, Inc. System for communication between a central controller and items in a factory using infrared light

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19955646A1 (de) * 1999-11-19 2001-06-13 Bayerische Motoren Werke Ag Vorrichtung und Verfahren zur Zuordnung eines Werkzeugs zu einem Werkstück

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3637236A1 (de) * 1986-11-03 1988-05-19 Stabil Elektronik Gmbh Steuerungs- und ueberwachungsanordnung fuer ein werkzeug
US5742238A (en) * 1995-09-01 1998-04-21 Emtrak, Inc. System for communication between a central controller and items in a factory using infrared light

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2004050460A3 *

Also Published As

Publication number Publication date
WO2004050460A3 (fr) 2004-08-26
WO2004050460A2 (fr) 2004-06-17

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