The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 20, 2001
Filed:
Jun. 30, 1998
Applicant:
Inventors:
Lamar F. Ricks, Freeport, IL (US);
Wayne A. Lamb, Freeport, IL (US);
Peter G. Hancock, Plano, TX (US);
Assignee:
Honeywell Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/30 ; G01P 3/488 ; H03K 5/153 ; H03K 5/08 ;
U.S. Cl.
CPC ...
G01B 7/30 ; G01P 3/488 ; H03K 5/153 ; H03K 5/08 ;
Abstract
A geartooth sensor utilizes an algorithm for establishing an adaptive threshold for the switch point of the sensor to minimize drift in the point at which the sensor output changes in relation to the target features it is tracking. The algorithm utilizes measured waveform peak and average outputs and applies a separate empirically derived constant to each value to quickly obtain the major portion of the adaptive threshold value from the product of the first constant and the peak output, and to refine the threshold value further with the product of the second constant and the average output.