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Personal monitor and process for heat and work stress

  • US 4,883,063 A
  • Filed: 04/13/1989
  • Issued: 11/28/1989
  • Est. Priority Date: 05/29/1987
  • Status: Expired due to Term
First Claim
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1. A personal monitor for work and heat stress which comprises a heart beat sensor producing output electrical signals indicating a user'"'"'s heart beats, means for storing heart beat information corresponding to the heart beat signals produced over predetermined time intervals, information processing means connected to receive the heart beat information from said storing means, said information processing means being configured to analyze the heart beat information incrementally over the predetermined time intervals through moving time averages with a plurality of different time bases to obtain a physiological demand during the predetermined time intervals and to compare the obtained physiological demand against a stored physiological demand limit, and means for providing an indication to the user when the stored physiological demand limit has been exceeded, said information processing means being configured and connected to control operation of said indication providing means.

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