Apparatus for selecting a valid signal from a plurality of redundant measured and modelled sensor signals
First Claim
1. An apparatus for selecting a valid signal from among a plurality of redundant sensor signals comprising:
- a plurality of rate/range test circuits for receiving a first measured signal input and outputting a respective ranger/rate flag;
a plurality of comparison signal test circuits for comparing said first measured signal input to a modeled signal input and for outputting a respective first comparison flag;
a plurality of comparison signal test circuits for comparing said first measured input signal to a second measured input signal, and for outputting a respective second comparison flag;
a plurality of validity filters, each having as an input a filter increment signal, and each outputting a respective validity flag; and
validation logic for receiving as inputs said validity flags, said range/rate flags, and said first second comparison flags, and for providing as outputs a plurality of selection flags each selected according to a weighted value of said range/rate flags, said comparison flags, and said validity flags, and for generating a plurality of measured filter increment signals each having a magnitude and sign according to the weight value of said range/rate flags, said comparison flags, and said validity flags where the most negative value represents a valid measured signal and the most positive value represents an invalid measured signal.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides a method and an apparatus for selecting a valid signal from a plurality of redundant sensor signals wherein the sensor signals may include a plurality of measured and modelled signals. The invention comprises a circuit for generating a plurality of first pass/fail signals by performing a series of tests on the sensor signals. The invention further comprises circuitry for assigning a plurality of weighted values to each of the measured sensor signals according to the first and second pass/fail signals wherein the second pass/fail signals are initialized as pass signals. The invention further comprises of circuitry for summing the weighted values for each measured sensor signal and generating second pass/fail signals for each measured sensor signal. The invention also includes circuitry for assigning selection flags to each sensor signal according to the first and second pass/fail signals and circuitry for selecting the valid signal from the selection flags.
-
Citations
6 Claims
-
1. An apparatus for selecting a valid signal from among a plurality of redundant sensor signals comprising:
-
a plurality of rate/range test circuits for receiving a first measured signal input and outputting a respective ranger/rate flag; a plurality of comparison signal test circuits for comparing said first measured signal input to a modeled signal input and for outputting a respective first comparison flag; a plurality of comparison signal test circuits for comparing said first measured input signal to a second measured input signal, and for outputting a respective second comparison flag; a plurality of validity filters, each having as an input a filter increment signal, and each outputting a respective validity flag; and validation logic for receiving as inputs said validity flags, said range/rate flags, and said first second comparison flags, and for providing as outputs a plurality of selection flags each selected according to a weighted value of said range/rate flags, said comparison flags, and said validity flags, and for generating a plurality of measured filter increment signals each having a magnitude and sign according to the weight value of said range/rate flags, said comparison flags, and said validity flags where the most negative value represents a valid measured signal and the most positive value represents an invalid measured signal. - View Dependent Claims (2, 3, 4, 5, 6)
-
Specification