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Title: Discriminating ultrasonic proximity detection system

Abstract

This invention uses an ultrasonic transmitter and receiver and a microprocessor to detect the presence of an object. In the reset mode the invention uses a plurality of echoes from each ultrasonic burst to create a reference table of the echo-burst-signature of the empty monitored environment. The invention then processes the reference table so that it only uses the most reliable data. In the detection mode the invention compares the echo-burst-signature of the present environment with the reference table, detecting an object if there is a consistent difference between the echo-burst-signature of the empty monitored environment recorded in the reference table and the echo-burst-signature of the present environment.

Inventors:
 [1]
  1. (Durango, CO)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
866832
Patent Number(s):
4800540
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
discriminating; ultrasonic; proximity; detection; transmitter; receiver; microprocessor; detect; presence; reset; mode; plurality; echoes; burst; create; reference; table; echo-burst-signature; empty; monitored; environment; processes; reliable; data; compares; detecting; consistent; difference; recorded; ultrasonic transmitter; proximity detection; detection mode; /367/

Citation Formats

Annala, Wayne C. Discriminating ultrasonic proximity detection system. United States: N. p., 1989. Web.
Annala, Wayne C. Discriminating ultrasonic proximity detection system. United States.
Annala, Wayne C. Sun . "Discriminating ultrasonic proximity detection system". United States. https://www.osti.gov/servlets/purl/866832.
@article{osti_866832,
title = {Discriminating ultrasonic proximity detection system},
author = {Annala, Wayne C.},
abstractNote = {This invention uses an ultrasonic transmitter and receiver and a microprocessor to detect the presence of an object. In the reset mode the invention uses a plurality of echoes from each ultrasonic burst to create a reference table of the echo-burst-signature of the empty monitored environment. The invention then processes the reference table so that it only uses the most reliable data. In the detection mode the invention compares the echo-burst-signature of the present environment with the reference table, detecting an object if there is a consistent difference between the echo-burst-signature of the empty monitored environment recorded in the reference table and the echo-burst-signature of the present environment.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

Patent:

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