Patent ID: 11879404
Assignee: VITESCO TECHNOLOGIES GMBH
Field: Measurement (Instruments)
Classification: CPC F  G | IPC F  G

Claim 3:
4. A method for determining a state of rotation of at least one rotary shaft of an internal combustion engine, comprising:
a. a first step (e1) of activating first and second current source sensors;
b. a second step (e2) of detecting passage of a tooth of a target by the first current source sensor, and generating as a first intermediate signal a square-wave pulse indicative of said passage of the tooth past the first current source sensor;
c. a third step (e3) of measuring a first signal passing along a communication bus, the first signal being a sum of the first intermediate signal generated by the first current source sensor and a second intermediate signal generated by the second current source sensor, and determining from said first signal that the first current source sensor generates a first high level on the first intermediate signal and that a measure of the first signal value corresponds to a first critical value; and
d. a fourth step (e4) of modifying a first low level of the first intermediate signal to a second low level, and also modifying the first high level of the first intermediate signal to a second high level.