Vehicle Data Processing Reallocation for Minimum Risk Maneuvers
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Solution Overview
Problem
Existing data processing systems for vehicles, particularly those with advanced driver assistance systems (ADAS), require additional hardware resources for performing minimum risk maneuvers (MRM) in case of failures, which is inefficient and not addressed by prior redundancy methods.
Innovation Solution
A data processing system that utilizes a dual set of hardware resources, where one set performs standard functions and the other set, upon failure, reallocates resources to execute MRM functions without requiring additional hardware, by reassigning existing resources from infotainment functions to MRM functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional separate ECU is provided to perform MRM functions in case of failure, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent applies multi-functionality by enabling a second ECU to perform multiple roles: executing second functions during normal operation and executing third functions (MRM) during failure conditions. This allows the same hardware resources to serve both standard operational purposes and emergency safety functions, eliminating the need for a dedicated separate ECU for MRM operations.
Solution Approach 2:
The patent implements dynamic resource allocation where the functional assignment of hardware resources changes based on operational conditions. The system dynamically switches from executing second functions to executing third functions when failure is detected, allowing flexible adaptation of hardware usage without physical reconfiguration or additional dedicated components.
2Reliability
If additional separate ECU is provided to perform MRM functions, then reliability is improved, but manufacturing cost increases
Solution Approach 1:
By designing the second ECU to universally handle both second functions and third functions, the patent eliminates the need to manufacture and install an additional dedicated ECU for MRM. This reduces component count, assembly complexity, and overall manufacturing cost while maintaining the required safety functionality.
Solution Approach 2:
The patent merges the MRM execution capability into the existing second ECU architecture, combining emergency safety functionality with standard operational functionality in a single integrated unit. This consolidation reduces the total number of ECUs required and simplifies the manufacturing process.
3Reliability
If hardware resources are reassigned from infotainment functions to MRM functions upon failure, then reliability is improved, but adaptability decreases
Solution Approach 1:
The system dynamically adapts hardware resource allocation based on operational state. During normal operation, resources execute second functions with full flexibility. Upon detecting failure, the system dynamically reconfigures the same resources to execute third functions, providing adaptability through software-controlled resource management rather than fixed hardware assignments.
Solution Approach 2:
The second ECU is pre-configured with the capability to execute both second functions and third functions. This preliminary preparation ensures that when failure occurs, the hardware resources can immediately switch to MRM execution without requiring additional physical reconfiguration, maintaining both reliability and functional flexibility.
Data Source
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AI summary
A data processing system (1) for a vehicle (100) includes a first set of hardware resources (13) which in a first mode of operation are utilized to perform a first set of functions (21), for example driver assistance functions. The data processing system (1) also includes a second set of hardware resources (14), which in the first mode of operation are utilized to perform a second set of functions (22), for example infotainment functions. In a second mode of operation, defined by a failure of the data processing system (1) to perform the first set of functions (21), the data processing system (1) utilizes the second set of hardware resources (14) to perform a third set of functions (23), for example related to a minimum risk maneuver.