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Operation data-recording system for a machine

  • US 4,757,454 A
  • Filed: 08/16/1985
  • Issued: 07/12/1988
  • Est. Priority Date: 08/20/1984
  • Status: Expired due to Term
First Claim
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1. An operation data-recording system for a construction machine wherein a card-type memory is detachably fitted to a data-recording apparatus mounted on said construction machine, operation data of said construction machine detected from sensors mounted on said construction machine and other operation data for said construction machine fed from an external input means are recorded in said card-type memory, and said data stored in said card type memory is then processed with a data processing apparatus to analyze said operation data and said other operation data;

  • said system comprising;

    said card-type memory stored with a program for processing data on an operation performed by said construction machine, said program being written by said data-processing apparatus;

    a data reader which receives said program for processing said operation data when it is determined that an identification code in said card-type memory fed to said data-recording apparatus is in agreement with a predetermined code of said construction machine;

    said sensors mounted on said construction machine, including a travelling speed sensor to detect a speed of the machine, an engine speed sensor to detect a rate of revolution of the engine, an operation time sensor to detect an operation interval or an operation period, and a work load sensor to detect an amount of material loaded in said machine;

    said data-processing apparatus comprising means to process input signals from said sensors in accordance with said program;

    a malfunction-determining means to determine if values received by said malfunction-determining means from said sensors exceed predetermined standard values furnished from said card-type memory;

    a malfunction indicating means controlled by said malfunction-determining means to indicate a malfunction of said machine when said sensor values exceed said predetermined standard values; and

    an optimum operation-determining means to make a comparison of signals detected by said sensors with an optimum efficiency value, and to supply results of said comparison to an external display apparatus.

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