MEASUREMENT AMPLIFYING CIRCUIT FOR PIEZOELECTRIC SENSOR POSITIONED IN AN INTERNAL COMBUSTION ENGINE

MEASUREMENT AMPLIFYING CIRCUIT FOR PIEZOELECTRIC SENSOR POSITIONED IN AN INTERNAL COMBUSTION ENGINE

A measurement amplifying circuit (400) for a piezo-electric sensor (100) positioned in an internal combustion engine supplying a signal to be measured, includes: a module (420) for generating a common mode voltage; a differential amplifier (410); and a subtraction module (430). The module (420) for...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: MIRASSOU DAVID
Format: Patent
Sprache:eng
Schlagworte:
MEASURING
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:A measurement amplifying circuit (400) for a piezo-electric sensor (100) positioned in an internal combustion engine supplying a signal to be measured, includes: a module (420) for generating a common mode voltage; a differential amplifier (410); and a subtraction module (430). The module (420) for generating a common mode voltage is to be connected to a wall (111) of the engine, the module (420) for generating a common mode voltage being suitable for supplying a common mode voltage signal (Vcm) reproducing the variations of an engine signal (Sb) received from the wall (111) of the engine.