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Title: Methods for automatic trigger threshold adjustment

Abstract

Methods are presented for adjusting trigger threshold values to compensate for drift in the quiescent level of a signal monitored for initiating a data recording event, thereby avoiding false triggering conditions. Initial threshold values are periodically adjusted by re-measuring the quiescent signal level, and adjusting the threshold values by an offset computation based upon the measured quiescent signal level drift. Re-computation of the trigger threshold values can be implemented on time based or counter based criteria. Additionally, a qualification width counter can be utilized to implement a requirement that a trigger threshold criterion be met a given number of times prior to initiating a data recording event, further reducing the possibility of a false triggering situation.

Inventors:
;
Issue Date:
Research Org.:
SNL (Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States))
Sponsoring Org.:
USDOE
OSTI Identifier:
1127093
Patent Number(s):
8,676,540
Application Number:
11/954,024
Assignee:
Sandia Corporation (Albuquerque, NM)
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Welch, Benjamin J, and Partridge, Michael E. Methods for automatic trigger threshold adjustment. United States: N. p., 2014. Web.
Welch, Benjamin J, & Partridge, Michael E. Methods for automatic trigger threshold adjustment. United States.
Welch, Benjamin J, and Partridge, Michael E. Tue . "Methods for automatic trigger threshold adjustment". United States. https://www.osti.gov/servlets/purl/1127093.
@article{osti_1127093,
title = {Methods for automatic trigger threshold adjustment},
author = {Welch, Benjamin J and Partridge, Michael E},
abstractNote = {Methods are presented for adjusting trigger threshold values to compensate for drift in the quiescent level of a signal monitored for initiating a data recording event, thereby avoiding false triggering conditions. Initial threshold values are periodically adjusted by re-measuring the quiescent signal level, and adjusting the threshold values by an offset computation based upon the measured quiescent signal level drift. Re-computation of the trigger threshold values can be implemented on time based or counter based criteria. Additionally, a qualification width counter can be utilized to implement a requirement that a trigger threshold criterion be met a given number of times prior to initiating a data recording event, further reducing the possibility of a false triggering situation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {3}
}

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Works referenced in this record:

A 3-axis acceleration sensor data acquisition instrument system
conference, January 2004

  • Asumadu, J. A.; La Belle, V.; Od'Neal, R.
  • Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (IEEE Cat. No.04CH37510)
  • DOI: 10.1109/IMTC.2004.1351065