Vehicle Externality Recognition for Fast and Reliable Sensor Fusion
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Solution Overview
Problem
Sensor fusion in vehicle control systems delays processing due to timing differences between sensor devices, leading to errors and increased response time, which is detrimental for safety systems requiring quick responses.
Innovation Solution
A vehicle control system with an externality recognition device that includes a first type sensor with faster output and a second type sensor with longer delay, using a sensor fusion processing unit to generate integrated information and prompt report information, allowing for accurate and timely control based on the priority of the driving assistance function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor fusion is performed to integrate outputs of multiple sensor devices for higher recognition accuracy, then the reliability of object recognition is improved, but the processing completion time is delayed
Solution Approach 1:
The patent segments the sensor fusion process into multiple processing units with different processing depths. Some processing units perform basic processing (processing A, C) while others perform more intensive processing (processing B, D). This segmentation allows the system to provide both quick results from simple processing and accurate results from complex processing, resolving the contradiction between speed and reliability.
Solution Approach 2:
The patent applies partial action by performing different levels of processing on different sensor outputs. Not all sensor data undergoes the same extensive processing - some data receives basic processing while other data receives more intensive processing. This selective approach reduces overall processing time while maintaining reliability for critical detections.
2Reliability
If comprehensive object detection is performed using multiple sensor types, then detection coverage is improved, but response time increases due to processing delays
Solution Approach 1:
The patent segments the detection system into multiple processing units that operate in parallel with different processing depths. Fast processing units provide quick detection results while slower units provide more accurate results. This segmentation enables the system to respond quickly to critical situations while maintaining comprehensive detection coverage through multiple processing levels.
Data Source
AI summary
Provided is a vehicle control system which selects detection information of a delay time or reliability according to a content of a driving support function and supplies the detection information to a control processing unit. The vehicle control system includes: an externality recognition device which detects a target around a vehicle; an accuracy-prioritized control unit which controls an in-vehicle control target based on integrated information supplied from the externality recognition device; and a response-prioritized control unit which controls an in-vehicle control target based on prompt report information supplied from the externality recognition device, wherein the externality recognition device includes: a first type sensor which detects the target and outputs first detection information; a second type sensor which detects the target and outputs second detection information, the second type sensor having a longer delay time required to output detection information than the first type sensor; a sensor fusion processing unit which generates the integrated information and the prompt report information based on the first detection information and the second detection information; and a controller which generates an activation instruction of the response-prioritized control unit based on the prompt report information.