In-Vehicle Analysis Selection for Real-Time Driving Support
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Solution Overview
Problem
Existing systems fail to provide appropriately hierarchized driving support information in real-time for vehicle control, as they cannot effectively manage delay times in transmitting and analyzing sensor data, leading to inefficiencies in using detailed information when the vehicle approaches a dynamic object.
Innovation Solution
An in-vehicle device with an allowable delay estimation unit, transfer delay estimation unit, and determination unit that selects appropriate analysis processes based on the difference between allowable and transfer delays to generate hierarchized driving support information, ensuring timely and effective use of data for automated driving functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If comprehensive sensor data analysis is performed to generate detailed driving support information, then the quality and completeness of driving support information is improved, but the processing time and delay increase
Solution Approach 1:
The patent segments the driving support information into multiple hierarchical levels (first level: basic object detection, second level: detailed attribute analysis, third level: predictive analysis). The determination unit selectively executes analysis processes based on the allowable delay, performing only necessary segmentation levels rather than comprehensive analysis, thus balancing information quality with processing time constraints.
Solution Approach 2:
The patent implements partial action by selectively executing only the necessary analysis processes based on the allowable delay. When delay is critical, only essential first-level analysis is performed. When more time is available, additional second-level or third-level analysis is added. This avoids performing excessive unnecessary analysis while ensuring minimum required quality is maintained.
2Loss of information
If multiple analysis processes are executed to generate comprehensive driving support information, then the completeness of information is improved, but the device complexity and processing load increase
Solution Approach 1:
The patent makes the analysis system dynamic by allowing the determination unit to adaptively select which analysis processes to execute based on real-time allowable delay conditions. The system transitions between different operational modes (minimal analysis, moderate analysis, comprehensive analysis) rather than being statically configured, optimizing the balance between information completeness and processing complexity based on current timing constraints.
Solution Approach 2:
The patent changes the parameter of analysis depth based on the allowable delay parameter. When allowable delay is large, deeper analysis parameters are used; when allowable delay is small, shallower analysis parameters are used. This parameter-based adaptation allows the system to maintain appropriate information completeness while adjusting processing complexity to match available time resources.
3Speed
If real-time driving support information is provided for automated driving control, then the responsiveness to dynamic objects is improved, but the accuracy and detail of information may be reduced
Solution Approach 1:
The patent applies preliminary action by performing basic first-level analysis (object detection and classification) immediately upon receiving sensor data, providing rapid initial driving support information. Based on the allowable delay and situation, additional second-level or third-level analysis is then performed to enhance accuracy and detail. This ensures real-time responsiveness is maintained while opportunity for improved accuracy is captured when time permits.
Data Source
AI summary
An in-vehicle device installed in a vehicle having an automated driving function, includes: an allowable delay estimation unit that estimates, as an allowable delay, a time until the vehicle reaches a dynamic object; a transfer delay estimation unit that estimates, as a transfer delay, a time from when the in-vehicle device receives data from outside of the vehicle to when the in-vehicle device transfers the data to an execution unit for executing the automated driving function, based on load states of information processing and information transfer in the vehicle; a determination unit that selects a specific analysis process from among a plurality of analysis processes for analyzing the data received from the outside, based on a difference between the allowable delay and the transfer delay; and a driving support information generation unit configured to generate driving support information by executing the specific analysis process selected by the determination unit.