×

Device for production control and method for production control using the same

  • US 5,282,139 A
  • Filed: 11/20/1991
  • Issued: 01/25/1994
  • Est. Priority Date: 11/21/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. A device for production control which comprises:

  • (1) a control means for generating production instruction data regarding a subsequent production process, which production instruction data is provided to each production lot and which contains (i) priority data needed for defining an order of processing (ii) lot information depicting attributes of each production lot, (iii) primary condition information depicting conditions under which each production lot is transported and (iv) secondary condition information depicting conditions under which each production lot is processed;

    (2) a transport means for transporting a predetermined production lot based on said production instruction data and for forming and outputting said primary condition information;

    (3) a processing means for processing said predetermined production lot transported by said transport means based on said production instruction data and for forming and outputting said secondary condition information, wherein said control means further comprises;

    (a) a batching time examining means for computing, when a plurality of production processes are to be performed simultaneously, an expected ending time of each production process and when said subsequent production process should start;

    (b) a batching means for computing production lots which can be processed based on said primary and secondary condition information, and for creating a candidate list of production lots for said subsequent production process, said production lots on said candidate list being sorted according to the order in which each subsequent production process is performed, said batching means conveying said order to each device in said subsequent production process;

    (c) a top priority batch determining means for defining priority for each subsequent production process from said list based on priorities of the production lots for said subsequent production process,said control means determining each priority of said plurality of production processes when the same are performed simultaneously and said control means producing production instruction that determines production of the top priority.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×