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US 6,604,006 B2Granted
Control device in a system and method for monitoring a controller
AssigneeSiemens Aktiengesellschaft
InventorReinhold Zeilinger
Life of this patent
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Abstract
A control device is provided for a machine, system or appliance, particularly a fuel cell system, having a first control unit and a second control unit which interchanges signals with the first control unit and monitors the first control unit. A comparison module compares states of the control units. A method for monitoring a controller includes monitoring the first control unit with the second control unit by comparing the states of the control units.
Claims12
A method for monitoring a controller, comprising:
- processing input signals from peripheral elements identically in first and second control units;
- determining output signals in parallel for the peripheral elements, in the first and second control units;
- comparing states of the first control unit and states of the second control unit;
- sending a trigger signal to a disconnection component only upon identity between the states;
- sending the trigger signal from the second control unit to the first control unit if the identity between the states has been established in the second control unit;
- maintaining sequence functions of the controller only if the disconnection component is triggered regularly.
3 more elements
A method for monitoring a controller, comprising:
- processing input Bignals from peripheral elements identically in first and second control units;
- determining output signals in parallel for the peripheral elements, in the first and second control units;
- comparing states of the first control unit and states of the second control unit;
- sending a trigger signal to a disconnection component only upon identity between the states;
- sending the trigger signal from the second control unit to the first control unit if the identity between the states has been established in the second control unit;
- and
- maintaining sequence functions of the controller only if the disconnection component is triggered regularly.
4 more elements
Dependencies are inferred from the claim text.