Sensor Circuit Assembly Plausibility Checking via Merged Control Units
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Solution Overview
Problem
Existing circuit assemblies for plausibility checking of sensor signals often require external evaluating and control units and communication links, which can lead to transmission errors and resource inefficiencies, especially in safety-critical applications like motor vehicles.
Innovation Solution
A circuit assembly design where a first evaluating and control unit generates sensor data from a first sensor element and transmits it to a second evaluating and control unit, which evaluates and compares the data with its own sensor data for plausibility, eliminating the need for external units and improving resource distribution by allowing more advanced calculations within the second unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If external evaluating and control units are used for plausibility checking, then resource distribution can be simplified, but transmission errors increase and reliability decreases
Solution Approach 1:
The patent merges the evaluating and control functionality directly into the sensor units themselves. Each sensor unit contains its own evaluating and control unit that performs plausibility checks locally on sensor signals before transmission, eliminating the need for external evaluating units and associated communication links, thereby reducing transmission errors while maintaining resource distribution
2Ease of manufacture
If sensor signals are transmitted externally for evaluation, then sensor unit design is simplified, but transmission errors increase and accuracy decreases
Solution Approach 1:
The evaluating and control unit within each sensor unit performs preliminary evaluation and plausibility checking of sensor signals before they are transmitted. This preliminary action ensures that only validated sensor data is transmitted, improving accuracy while maintaining simplified sensor unit design through integrated functionality
3Ease of operation
If plausibility checking is performed externally, then communication links are required, but transmission errors increase and system complexity increases
Solution Approach 1:
Each sensor unit performs plausibility checking of its own sensor signals through its integrated evaluating and control unit, enabling self-service operation without requiring external evaluation systems or complex communication links for data transmission, thereby simplifying system architecture while maintaining ease of operation
Data Source
AI summary
A circuit assembly for plausibility checking of sensor signals, which can be generated by at least two separate sensor elements, includes at least one evaluation and control unit which receives the sensor signals via at least one interface unit and evaluates the received sensor signals for generating sensor data. A first evaluation and control unit is configured to receive the sensor signals of a first sensor element and to generate first sensor data from the first sensor signals. The first evaluation and control unit is configured to provide the generated first sensor data via at least one interface unit to a second evaluation and control unit, which receives and evaluates the sensor signals of a second sensor element to generate second sensor data. The second evaluation and control unit compares the generated second sensor data and the generated first sensor data to each other and inspects them for plausibility.