Dual-Channel Measurement Circuit for Independent ADC Verification

The patent introduces a second measuring channel as an intermediary element to verify the first measuring channel. This second channel independently converts the same analog measuring voltage to a digital value, providing an external reference that is not dependent on the first channel's conversion process. This mediator approach enables independent verification and resolves the lack of reliability in self-based plausibility checks.

The patent divides the verification function into separate, independent measuring channels. Instead of a single channel performing self-verification, the system segments the measurement task across multiple channels, where each channel can independently verify the others. This segmentation allows for independent verification paths and eliminates the circular dependency problem in self-checking mechanisms.

The patent makes existing measuring channels multi-functional by enabling them to serve both as primary measurement channels and as verification channels for other channels. The second measuring channel can verify the first, and vice versa, allowing each channel to perform dual functions. This universality approach provides independent verification without requiring dedicated verification components, thus avoiding increased device complexity.

The measuring channels perform verification of each other using their own inherent conversion capabilities. Each channel serves itself and others by providing independent conversion results that can be compared. This self-service mechanism eliminates the need for external verification equipment, maintaining simplicity while achieving reliable independent verification.