Method and apparatus for detection and acquisition of...

F - Mech Eng,Light,Heat,Weapons – 02 – M

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F02M 65/00 (2006.01) G01R 29/02 (2006.01)

Patent

CA 2196950

A method and apparatus for detecting and displaying automotive fuel injector voltage signal pulse width which includes signal detection circuits for capturing the rising and falling edges of an input signal having positive and negative voltage swings is disclosed. Upon detecting a rising edge or a falling edge of a positive or negative voltage of the input signal, a corresponding software routine is executed to carry out the process of measuring the pulse width of a pulse of the input signal. The measured pulse width is then displayed in numerical and/or histogramic formats.

éthode et appareil pour détecter et afficher une largeur d'impulsion de tension d'un injecteur de carburant automobile. Comprend des circuits de détection de signaux pour saisir les flancs montant et descendant d'un signal d'entrée ayant des excursions de tension positives et négatives. Lors de la détection d'un flanc montant ou d'un flanc descendant d'une tension positive ou négative du signal d'entrée, une routine logicielle correspondante est exécutée pour mesurer la durée d'une impulsion d'entrée. La durée d'impulsion mesurée est ensuite affichée sous forme numérique et(ou) d'histogramme.

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