Device and method to monitor sensors in vehicles
First Claim
1. An apparatus for monitoring sensors in a vehicle, the sensors generating signals representing different physical variables, the apparatus comprising:
- a first arrangement determining at least a first comparison variable for a first unit of the sensors and a second comparison variable for a second unit of the sensors, the first and second comparison variables being identically defined and being determined as a function of the signals generated by the first and second units;
a second arrangement determining a reference variable as a function of the first and second comparison variables; and
a third arrangement performing the following functions;
monitoring at least one of the sensors as a function of the reference variable, andcorrecting the signal generated by at least one of the sensors as a function of the reference variable.
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Accused Products
Abstract
The apparatus is used for monitoring sensors in a vehicle which generate signals each representing different physical variables. The apparatus contains a first arrangement with which, for at least two sensors and on the basis at least of the signals generated by them, comparison variables defined identically for the sensors are determined. The apparatus also includes a second arrangement with which, as a function of at least the determined comparison variables, a reference variable is determined. On the basis of at least the determined reference variable, a monitoring operation for at least one sensor is performed in a third arrangement. In addition to the third arrangement, the apparatus further includes a fourth arrangement with which, for at least one sensor, a correction of the signal generated by the fourth arrangement is performed, at least as a function of the reference variable.
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Citations
29 Claims
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1. An apparatus for monitoring sensors in a vehicle, the sensors generating signals representing different physical variables, the apparatus comprising:
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a first arrangement determining at least a first comparison variable for a first unit of the sensors and a second comparison variable for a second unit of the sensors, the first and second comparison variables being identically defined and being determined as a function of the signals generated by the first and second units; a second arrangement determining a reference variable as a function of the first and second comparison variables; and a third arrangement performing the following functions; monitoring at least one of the sensors as a function of the reference variable, and correcting the signal generated by at least one of the sensors as a function of the reference variable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for monitoring sensors in a vehicle, the sensors generating signals, each of the signals representing a different physical variable, the method comprising the steps of:
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determining at least a first comparison variable for a first unit of the sensors and a second comparison variable for a second unit of the sensors, the comparison variables being identically defined and being determined as a function of the signals generated by the first and second units; determining a reference variable as a function of the first and second comparison variables; and performing the following steps; monitoring the signal generated by at least one of the sensors as a function of the reference variable, and correcting the signal generated by the at least one of the sensors.
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25. An apparatus for monitoring sensors, the sensors being arranged in a vehicle and generating signals, the sensors including a rotation rate sensor generating a first signal, a steering angle sensor generating a second signal, a transverse acceleration sensor generating a third signal, and wheel rotation speed sensors generating fourth signals, each of the wheel rotation speed sensors being associated with a respective one of the wheels of the vehicle, the apparatus comprising:
an arrangement performing the functions of monitoring the sensors and compensating the signals generated by the sensors as a function of the first, second, third and fourth signals. - View Dependent Claims (26)
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27. An apparatus for monitoring sensors in a vehicle, the sensors generating signals representing different physical variables, the apparatus comprising:
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means for determining at least a first comparison variable for a first unit of the sensors and a second comparison variable for a second unit of the sensors, the first and second comparison variables being identically defined and being determined based on the signals generated by the first and second units; means for determining a reference variable based on the first and second comparison variables; and means for performing the functions of monitoring at least one of the sensors based on the reference variable and correcting at least one of the signals generated by at least one of the sensors based on the reference variable.
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28. An apparatus for monitoring sensors, the sensors being arranged in a vehicle and generating signals, the sensors including a rotation rate sensor generating a first signal, a steering angle sensor generating a second signal, a transverse acceleration sensor generating a third signal, and wheel rotation speed sensors generating fourth signals each of the wheel rotation speed sensors being associated with a respective one of wheels of the vehicle, the apparatus comprising:
means for monitoring the sensors and for compensating the signals generated by the sensors based on the first, second, third and fourth signals.
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29. An apparatus for monitoring sensors in a vehicle, the sensors generating signals representing different physical variables, the apparatus comprising:
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a first arrangement determining at least a first comparison variable for a first unit of the sensors and a second comparison variable for a second unit of the sensors, the first and second comparison variables being identically defined and being determined as a function of the signals generated by the first and second units; a second arrangement determining a reference variable as a function of the first and second comparison variables; and a third arrangement for correcting the signal generated by at least one of the sensors as a function of the reference variable.
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Specification