Operation data recording system

  • US 4,853,859 A
  • Filed: 11/08/1988
  • Issued: 08/01/1989
  • Est. Priority Date: 01/24/1985
  • Status: Expired due to Term
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First Claim
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1. An operation data recording system for apparatus having an engine and a working machine on a vehicle, comprising detecting means on board the apparatus comprising a plurality of sensors comprising a first sensor for detecting engine operation conditions, second sensor for detecting vehicle operation conditions and a third sensor for detecting working machine operation conditions,engine operation judging circuit means connected with said first sensor, vehicle operation circuit means connected with said second sensor, and working condition judging circuit means connected with said third sensor,idling operation judging means connected with said engine operation judging circuit means, said vehicle operation circuit means and said working condition judging means for indicating idling operation when said first sensor indicates that the engine is operating, said second sensor indicates that the vehicle is not operating and said third sensor indicates non-transportation, judging means connected with said vehicle operation circuit means and with said working condition judging circuit means for indicating transportation operation when said second sensor indicates vehicle operation and said third sensor indicates non-operation of said working machine.

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