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Machine monitoring system

  • US 5,446,672 A
  • Filed: 08/09/1994
  • Issued: 08/29/1995
  • Est. Priority Date: 08/09/1994
  • Status: Expired due to Fees
First Claim
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1. A machine monitoring system for use with a plurality of machines, each of which performs cyclic work operations comprising:

  • a machine unit adjacent each of said plurality of machines, each of said machine units comprising.means for detecting each work cycle for a plurality of tools of the machine and for generating work cycle output signals representative of each tool thereof;

    means for detecting each work cycle for a plurality of maintenance functions of the machines and for generating work cycle output signals representative of each said maintenance function thereof;

    means for counting said work cycle output signals representative of each of said tools and for generating count output signals thereof;

    means for counting said work cycle output signals representative of each of said maintenance functions of the machines and for generating count output signals thereof;

    a central station remote from said monitoring system, said central station system comprising;

    means for receiving said count output signals from said machine unit;

    means for comparing said count output signals with predetermined limit counts for each of said plurality, of tools indicative of the status of each of said plurality, of tools and means for generating output signals corresponding to the status of said tools;

    means for comparing said count output signals with predetermined limit counts for each of said maintenance functions of the machines and means for generating output signals corresponding to status of said machines;

    means for activating an alarm when said output count equals said limit count.

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