초록 ▼

The present invention relates particularly to a method for detecting electric power blips during transmission of an electric signal representative of a magnitude detected by a sensor (1) to an electronic control unit associated with a motor, characterized in that it includes the steps of: a) measuri

The present invention relates particularly to a method for detecting electric power blips during transmission of an electric signal representative of a magnitude detected by a sensor (1) to an electronic control unit associated with a motor, characterized in that it includes the steps of: a) measuring said electric signal known as “raw signal” (SBTE); b) proceeding with the filtering of said raw signal to obtain a “filtered signal” (STFE); c) calculating for a constant time pitch, |raw signal−filtered signal|, that is, the absolute value of the difference between the raw signal and the filtered signal; d) comparing said absolute value to a predetermined threshold of maximum variation (SVM); e) when said absolute value is greater than said predetermined threshold of maximum variation, declaring a state of power blip; f) otherwise, repeating the preceding steps.

대표청구항 ▼

1. A method for detecting electric dropouts during transmission of an electric signal representative of a magnitude detected by a sensor to an electronic control unit associated with an engine, comprising: a) measuring the electric signal as a raw signal;b) filtering the raw signal based on speed of

1. A method for detecting electric dropouts during transmission of an electric signal representative of a magnitude detected by a sensor to an electronic control unit associated with an engine, comprising: a) measuring the electric signal as a raw signal;b) filtering the raw signal based on speed of change of the raw signal so as to obtain a filtered signal;c) calculating, for a constant time pitch, |raw signal−filtered signal|, as an absolute value of the difference between the raw signal and the filtered signal;d) comparing the absolute value with a predetermined threshold of maximum variation;e) when the absolute value is higher than the predetermined threshold of maximum variation, declaring a dropout state; andf) otherwise, reiterating the preceding operations, whereinin b) the filtering compares the speed of change of the signal with a predefined maximum speed, and assigns the filtered signal, if the speed of change of the signal is faster than the maximum speed, a predefined value which corresponds to the predefined maximum speed, andwhen the speed of change of the raw signal increases, the speed of change of the raw signal is compared with the predefined maximum speed, andwhen the speed of change of the raw signal decreases, the speed of change of the raw signal is compared with the predefined maximum speed. 2. The method as claimed in claim 1, wherein in e), an elementary fault counter is incremented or decremented, and a dropout state is declared when the counter reaches a predetermined value. 3. A method for managing operation of an engine, the engine including at least one sensor for measuring a characteristic magnitude of the engine, and electric means for transmitting an electric signal representative of the magnitude detected by the sensor, to an associated electronic control unit capable of interfering in the operation of the engine, the method incorporating the method as claimed in claim 1. 4. The method as claimed in claim 3, wherein, in e), a dropout state is declared and a predetermined value or a predetermined change of values, as a degraded mode, is assigned to the magnitude. 5. The method as claimed in claim 4, wherein the predetermined value or predetermined change of values is defined by a computer model associated with the electronic control unit. 6. The method as claimed in claim 4, wherein the degraded mode is maintained until the engine is switched off. 7. The method as claimed in claim 3, wherein the information relating to the transition to the degraded mode is retained in memory in the electronic control unit, even after the engine is switched off. 8. The method as claimed in claim 7, wherein even if a fault is cleared the degraded mode is retained until a new cycle of detecting electric dropouts during transmission of an electric signal is initiated. 9. The method as claimed in claim 3, wherein the magnitude is the temperature of a liquid for cooling the engine. 10. The method as claimed in claim 3, wherein the magnitude is temperature of oil of the engine. 11. The method as claimed in claim 3, wherein the engine is a combustion engine and the magnitude is pressure prevailing in a combustion chamber of the engine.