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:
Jun. 06, 1989
Filed:
Mar. 18, 1988
Applicant:
Inventor:
Joel Garnault, Sannois, FR;
Assignee:
Bendix France, Drancy, FR;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01P / ; G01P / ; G01R / ; B60T / ;
U.S. Cl.
CPC ...
324166 ; 324173 ; 324546 ; 340514 ; 364565 ;
Abstract
The device includes a comparator (4) fed by a quasi-sinusoidal signal (3) delivered by a variable reluctance sensor, for converting alternations of the signal into pulses acceptable by digital computing means. According to the invention, the device includes a selectively connectable feedback resistor (R5) for varying the threshold of the comparator in such a way as to check, at a given frequency of the signal, the correctness of the amplitude of the signal (3) provided by the sensor. The device may be used for the checking of the operational state of a variable reluctance sensor delivering a signal indicating the speed of rotation of a shaft fitted in a motor vehicle.