Redundant Optoelectronic Sensor Integrity Checking

The patent implements integrity checking by creating a redundant copy of the light-sensitive detection assembly. The sensor component includes multiple detection assemblies (e.g., first, second, and third assemblies) that are identical or substantially identical in structure and spectral sensitivity. By comparing the output signals from these redundant assemblies, the system can detect malfunctions and perform plausibility checks without requiring complex external testing equipment.

The patent performs integrity checking during normal operation by continuously comparing signals from redundant detection assemblies. Instead of requiring a separate testing phase where the sensor is deactivated, the system carries out plausibility checks in real-time alongside normal sensing operations. The control unit compares output signals from multiple assemblies and can detect malfunctions without interrupting the sensor's primary function.

The patent combines multiple detection assemblies into a single integrated sensor component with a unified structure. The multiple photodiode assemblies (first, second, third, and fourth assemblies) are integrated together with shared components such as the semiconductor substrate and contact structures. This merging approach allows plausibility monitoring through signal comparison while maintaining a compact, unified device architecture rather than separate independent sensors.