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Method and system for collecting via a MES system time-stamps of working-statuses

  • US 10,126,728 B2
  • Filed: 09/22/2015
  • Issued: 11/13/2018
  • Est. Priority Date: 09/23/2014
  • Status: Active Grant
First Claim
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1. A method of collecting via a manufacturing execution system (MES) time-stamps of working statuses of machines and operators for a calculation of a time-dependant component of overall labor effectiveness (OLE) and overall equipment effectiveness (OEE) indicators in a manufacturing task, wherein an operator and a machine are assigned to a task, the operator and the machine being hereinafter called actors, which method comprises performing the following steps with a processor:

  • a) assigning to an actor, an entity, defining responsibility of data provision, the entity herein-after being called a token;

    b) defining two meta-statuses for the machine in the task, each of the meta-statuses grouping a set of machine statuses;

    the meta-statuses including a first meta-status hereinafter called an operating meta-status and a second meta-status hereinafter called a booked meta-status, wherein the two meta-status being defined as follows;

    the machine is defined to be in the operating meta-status when the machine is in a status engaged in the task and the machine is able to know and notify its own status;

    the machine is defined to be in the booked meta-status when the machine is in a status engaged in the task and the machine is unable to notify its own status;

    c) collecting, via the MES system, the time stamps of the statuses of the machine and/or of the operator in a given manufacturing task, which collecting step further includes the steps of;

    c1) assigning the token to the actor at a start of the given manufacturing task via the MES system;

    c2) during the given manufacturing task being in progress,c21) collecting from the actor owning the token, the time stamps of the statuses via the MES system;

    c22) if a status transition event took place and such event implies also a meta-status transition event;

    notifying the MES system that an event of meta-status transition took place via the operator;

    assigning the token ownership to the machine upon determining that the meta-status switched from the booked meta-status to the operating meta-status via the MES system, or assigning the token ownership to the operator upon determining that the meta-status switched from the operating meta-status to the booked meta-status.

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