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System and device for monitoring and signaling personnel presence

  • US 6,771,173 B1
  • Filed: 12/29/2000
  • Issued: 08/03/2004
  • Est. Priority Date: 12/29/2000
  • Status: Expired due to Fees
First Claim
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1. A system comprising:

  • at least one personnel presence sensor, said personnel presence sensor capable of detecting the distance between a person and the personnel presence sensor; and

    personnel presence monitoring/signaling logic operably coupled to receive personnel presence information from the at least one personnel presence sensor for monitoring and signaling personnel presence by indicating the distance between person and the personnel presence sensor by providing an output varying among a range of at least three values according to the detected distance.

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