Method for the automated determination of fault events

• US 20030028830A1
• Filed: 07/29/2002
• Published: 02/06/2003
• Est. Priority Date: 01/29/2000
• Status: Active Grant

• Current Assignee: Intellectual Ventures II LLC (Intellectual Ventures LLC)
• Original Assignee: ABB Research Ltd. (ABB Ltd.)
• Inventors: Vollmar, Gerhard, Kallela, Jari, Szoke, Szaniszlo
• Granted Patent: US 7,100,093 B2
• Time in Patent Office: Days
• US Class Current: 714/47
• CPC Class Codes: G05B 19/41875 characterised by quality surveillance of production
• CPC Class Codes: G05B 2219/32179 Quality control, monitor production tool with multiple sensors
• CPC Class Codes: G05B 2219/32196 Store audit, history of inspection, control and workpiece data into database
• CPC Class Codes: G05B 2219/32214 Display on screen what fault and which tool and what order to repair fault
• CPC Class Codes: G05B 2219/32221 Correlation between defect and measured parameters to find origin of defect
• CPC Class Codes: G05B 23/0248 Causal models, e.g. fault tree; digraphs; qualitative physics
• CPC Class Codes: G05B 23/0278 Qualitative, e.g. if-then rules; Fuzzy logic; Lookup tables; Symptomatic search; FMEA
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

A method is described for the automated determination of fault events by evaluation of field data of a production installation within a system for determining the effectiveness (overall equipment effectiveness (OEE)) of the production installation and for the analysis of causes of faults. The determination of the fault events takes place using a data processing device and programs stored in it for carrying out the functions of a fault event detector and an OEE script configurer. The OEE script configurer accesses a prescribed productivity model specific to a production installation type, generates an OEE script with likewise prescribed configuration data taken into account and stores it in an OEE script memory. The fault event detector accesses the OEE script, calls up field data from a data server, derives fault events from the field data according to processing instructions of the OEE script, and stores them in a fault database.

Claims

1. A method for an automated determination of fault events by evaluation of field data of a production installation within a system for determining an effectiveness of the production installation and for an analysis of causes of faults, which comprises the steps of:

providing a data processing device having a fault event detector, an overall equipment effectiveness (OEE) script configurer, and programs stored therein for carrying out functions of the fault event detector and the OEE script configurer, the data processing device further including a fault database for storing determined fault events and an OEE script memory; and

determining fault events by the steps of;

using the OEE script configurer to access a prescribed productivity model specific to the production installation, generate an OEE script with likewise prescribed configuration data taken into account, and store the OEE script in the OEE script memory; and

using the fault event detector to access the OEE script, call up the field data from a data server of the production installation according to execution requirements of the OEE script, derive the fault events from the field data according to processing instructions of the OEE script, and store the fault events together with previously entered fault events, in the fault database.

2. The method according to claim 1, wherein the prescribed productivity model specific to the production installation is prescribed by a WEB browser calling up a productivity model specific to the production installation stored on a WEB server and feeding it to the OEE script configurer.

3. The method according to claim 1, which comprises entering additional information on the fault events taken into account by the fault event detector in a determination of the fault events into the data processing device using a data input.