Patent ID: 11899076
Assignee: CONTINENTAL AUTOMOTIVE FRANCE
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. A method for automatically detecting a sensor coupled to the computer as claimed in claim 1, comprising:
a. a first step e1) switching the transistor in order on the one hand to short the first resistor and on the other hand to apply, between the first computer pin and the second computer pin, an impedance of the order of a resistance of the second resistor,
b. a second step e2) reading a signal generated by said sensor coupled to the computer,
c. Third a third step e3) comparing a value of the signal generated by the sensor coupled to the computer with a reference value Vref1, in the case where the result of the comparison is positive, move on to a fourth step e4), and in the case where the result of the comparison is negative, move on to a sixth step e6),
d. a fourth step e4) signaling the presence of a short-circuit type fault at a level of a battery voltage of the sensor,
e. a sixth step e6) comparing the value of the signal representative of the sensor coupled to the computer with a reference value Vref2, in the case where the result of the comparison is negative, move on to an eighth step e8), and in the case where the result of the comparison is positive, move on to a fourteenth step e14),
f. an eight step e8) comparing the value of the signal representative of the sensor coupled to the computer with a reference value Vref3, in the case where the result of the comparison is negative, move on to an eleventh step e11), and in the case where the result of the comparison is positive, move on to a ninth step e9),
g. a ninth step e9) signaling the presence of a short-circuit type fault in an electrical ground of the sensor,
h. an eleventh step e11) modifying the hardware interface so as to be compatible with a current-source type sensor, and
i. a fourteenth step e14) modifying the hardware interface so as to be compatible with a voltage-source type sensor.