Vehicle Sensor Reference Fields for Cross-Class Validation
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Solution Overview
Problem
The high development costs associated with verifying and validating sensor architectures for automated driving functions in vehicles, which can account for 30% to 40% of total development costs, necessitate a cost-effective solution for sensor arrangement design.
Innovation Solution
A method for designing a sensor arrangement that involves deriving geometric parameters from vehicle dimensions and establishing fixed reference fields for sensors, allowing for optimized placement and reduced validation and verification efforts across multiple vehicle classes and manufacturers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual sensor arrangements are designed and validated for each vehicle, then the sensor architecture can be optimized for each specific vehicle design, but the development costs and verification efforts increase significantly
Solution Approach 1:
The patent establishes reference fields with standardized sensor positions that can be universally applied across multiple vehicle classes. Instead of creating unique sensor arrangements for each vehicle, the same reference field definitions serve multiple vehicle types, reducing validation complexity while maintaining optimization benefits
Solution Approach 2:
The sensor arrangement is segmented into discrete reference fields, each with specific sensor position definitions. This segmentation allows the validation process to be broken down into manageable units that can be reused across different vehicle configurations, reducing overall validation effort
2Ease of manufacture
If standardized reference fields are used across multiple vehicle classes, then development costs are reduced, but the ability to optimize for specific vehicle designs is limited
Solution Approach 1:
The reference field system is designed to be dynamically adaptable - while the core reference fields are standardized for cost efficiency, the system allows for vehicle-specific extensions and modifications. This enables manufacturers to use the standardized baseline for most vehicles while still optimizing for specific design requirements when needed
3Reliability
If comprehensive validation is performed for each vehicle's sensor architecture, then reliability is ensured, but the time and cost expenditure increases to 30-40% of total development costs
Solution Approach 1:
The reference fields are pre-defined with standardized sensor positions and configurations before vehicle-specific development begins. This preliminary standardization allows most validation work to be performed once on the reference field definitions, rather than repeating comprehensive validation for each vehicle, significantly reducing time and cost while maintaining reliability
Solution Approach 2:
Instead of performing original validation for each vehicle, the patent uses copying of the validated reference field definitions across multiple vehicle classes. The sensor arrangements are copied from the standardized reference fields, and the validation results are reused, eliminating the need for repetitive validation efforts
Data Source
AI summary
A method for designing a sensor arrangement, in particular for a vehicle or a vehicle class. Dimensions of vehicles of at least one vehicle class are ascertained and geometric parameters are ascertained from the dimensions of the vehicles of the vehicle class. Predefined reference fields for sensors of vehicles of the at least one vehicle class are established based on the derived geometric parameters. Each reference field is configured to accommodate at least one sensor. A sensor arrangement is also described.