METHOD AND DEVICE FOR DUAL-CHANNEL MONITORING OF SAFETY-RELEVANT SENSOR SIGNALS
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Abstract
A method and device for dual-channel transmission of safety-relevant sensor signals. In the method, two sensor signals to be monitored are generated parallel to one another by two sensors and the generated sensor signals are transmitted to a common evaluation unit via two separate, input-side transmission channels. Within the evaluation unit, the permissibility of the transmitted sensor signals is checked using prescribed calculation specifications that correspond to one another and an evaluation unit output signal representing permissibility or impermissibility is generated for each sensor signal. The individual processing steps of the two calculation specifications are decoupled by the evaluation unit for the two sensor signals and performed diversified within the evaluation unit. The generated output signals are output via two separate, output-side transmission channels.
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Citations
34 Claims
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1-14. -14. (canceled)
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15. A method for dual-channel monitoring of safety-relevant sensor signals, the method comprising:
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generating two sensor signals in parallel to one another to be monitored via two sensors; transmitting the generated sensor signals to a common evaluation unit via two separate, input-side transmission channels; determining one of a permissibility and an impermissibility of the transmitted sensor signals within the evaluation unit using two prescribed calculation specifications corresponding to one another; and
thengenerating for each transmitted sensor signals via the evaluation unit an output signal representing one of permissibility and impermissibility, wherein in determining the permissibility of the transmitted sensor signals, individual processing steps of the calculation specifications are decoupled from one another by the evaluation unit for the sensor signals and performed separately within the evaluation unit, wherein each generated output signal is output via two separate, output-side transmission channels. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A monitoring device configured for dual-channel monitoring of safety-relevant sensor signals, the monitoring device comprising:
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a pair of sensors each configured to generate in parallel sensor signals to be monitored; a pair of input-side transmission channels configured to separately transmit the sensor signals; an evaluation unit configured to receive the transmitted sensor signals from the input-side transmission channels and then process the transmitted sensor signals using individual processing steps to thereby determine one of a permissibility and an impermissibility of the transmitted sensor signals; and a pair of output-side transmission channels each operatively connected to the evaluation unit and configured to generate an output signal representing one of permissibility and impermissibility. - View Dependent Claims (24, 25, 26, 27)
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28. A method for dual-channel monitoring hydraulic pressure acting on a friction-clutch of a torque-vectoring-system safety-relevant sensor signals, the method comprising:
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measuring the hydraulic pressure and then and converting the measured hydraulic pressure into sensor signals; transmitting the sensor signals to an evaluation unit via two separate, input-side transmission channels; determining one of a permissibility and an impermissibility of the transmitted sensor signals within the evaluation unit using two prescribed calculation specifications which correspond to one another such by ascertaining whether the transmitted sensor signals one of exceed and fall short of a prescribed reference value; and
thengenerating for each transmitted sensor signals via the evaluation unit an output signal representing one of permissibility and impermissibility based on whether the transmitted sensor signals one of exceed and fall short of a prescribed reference value. - View Dependent Claims (29, 30, 31, 32)
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33. A torque-vectoring-system with a friction clutch configured to transmit a drive torque to a half-shaft of a motor vehicle, the torque-vectoring-system comprising:
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a monitoring device configured for dual-channel monitoring of hydraulic pressure acting on the friction-clutch, the monitoring device comprising; a pair of sensors each configured to measure the hydraulic pressure and then convert the measured hydraulic pressure into sensor signals; a pair of input-side transmission channels configured to separately transmit the sensor signals; an evaluation unit configured to receive the transmitted sensor signals from the input-side transmission channels and then process the transmitted sensor signals using individual processing steps to thereby determine one of a permissibility and an impermissibility of the transmitted sensor signals by ascertaining whether the transmitted sensor signals one of exceed and fall short of a prescribed reference value; and a pair of output-side transmission channels each operatively connected to the evaluation unit and configured to generate an output signal representing one of permissibility and impermissibility based upon whether the transmitted sensor signals one of exceed and fall short of a prescribed reference value, wherein a warning signal is generated by the monitoring device if at least one output signal represents an impermissible signal. - View Dependent Claims (34)
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Specification