Method and device for dual-channel monitoring of safety-relevant sensor signals

A monitoring device configured for dual-channel monitoring of safety-relevant sensor signals, the monitoring device comprising:

• 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;
• a microprocessor 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 microprocessor and configured to generate an output signal representing one of permissibility and impermissibility.

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:

• measuring the hydraulic pressure and then and converting the measured hydraulic pressure into sensor signals;
• transmitting the sensor signals to a single, common microprocessor via two separate, input-side transmission channels;
• determining one of a permissibility and an impermissibility of the transmitted sensor signals within the microprocessor 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 then
• generating for each transmitted sensor signals via the microprocessor 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.

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:

• 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.