Patent ID: 6918064
Filing Date: 2005-07-12
Classification: F02D,G05B

Abstract:
1. A method of monitoring at least one of data and transmission of data between a first control unit and a second control unit, the two control units having a first program level, to which are allocated programs which calculate a control function, as well as a second program level including programs that monitor functional reliability of the programs of the first program level, the first control unit being connected to at least one component which is used to acquire data, comprising the steps of: transmitting at least one of the data acquired by the component and data derived from the data acquired by the component, from the first control unit to the second control unit over a single connection in a secure manner; and separating, in a secure manner, the at least one of the data and the data transmission in the first and second program levels such that errors in the at least one of the data and the data transmission are detected; wherein a second signal path, other than a first signal path of the first program level, is provided for monitoring in the second program level to protect data.