Vehicle Tracking Control Presumption for Parallel Traffic
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Solution Overview
Problem
Existing tracking control apparatuses struggle to accurately distinguish between preceding vehicles and parallel traveling vehicles, leading to delayed tracking control and driver discomfort when multiple vehicles are traveling in parallel, especially at greater distances.
Innovation Solution
A tracking control apparatus with a detection unit and control unit that presumes the existence of a preceding vehicle between parallel traveling vehicles when the distance between the host vehicle and parallel vehicles exceeds a separate recognition distance, allowing for timely tracking control without driver discomfort, and adjusts based on vehicle-to-vehicle distance and angle resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If object detection sensor is used to detect preceding vehicle, then detection accuracy is improved, but when multiple vehicles travel in parallel, the preceding vehicle cannot be separately recognized from parallel traveling vehicles, causing delayed tracking control and driver discomfort
Solution Approach 1:
The control unit presumes the existence of a preceding vehicle between parallel traveling vehicles before actual detection confirmation. When the detection unit detects multiple vehicles traveling in parallel and the distance exceeds the separate recognition distance, the control unit proactively assumes a preceding vehicle exists in the host lane and initiates tracking control based on this presumption, rather than waiting for certain detection. This preliminary action eliminates the delay caused by uncertain detection while maintaining safety.
2Device complexity
If object detection sensor with limited angular resolution is used, then device complexity is reduced, but the ability to separately recognize parallel traveling vehicles deteriorates
Solution Approach 1:
The detection scenario is segmented into two distinct cases: (1) when the distance to parallel traveling vehicles is within the separate recognition distance, the sensor directly detects and tracks the preceding vehicle; (2) when the distance exceeds the separate recognition distance, the control unit switches to presuming the existence of a preceding vehicle between the parallel traveling vehicles. This segmentation allows the use of a sensor with limited angular resolution while maintaining accurate tracking control through adaptive processing based on distance conditions.
3Reliability
If tracking control is delayed until preceding vehicle is clearly detected, then false detection is reduced, but driver comfort deteriorates due to delayed response
Solution Approach 1:
The system performs preliminary presumption of preceding vehicle existence based on the detection of parallel traveling vehicles and distance calculation. Instead of waiting for certain detection which may cause delays, the control unit proactively assumes a preceding vehicle exists when parallel traveling vehicles are detected at distances exceeding the separate recognition distance. This preliminary action initiates tracking control earlier, improving driver comfort while maintaining reliability through subsequent verification and adjustable presumption distances.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables the host vehicle to track the preceding vehicle without delaying the tracking control and causing discomfort to the driver, even when the preceding vehicle cannot be separately recognized from parallel vehicles, by controlling the host vehicle's travel based on presumed preceding vehicle presence.
Implementation Method 1
transmits a detection wave toward the front direction of the host vehicle and simultaneously receives a detection wave reflected from the object
Data Source
AI summary
A tracking control apparatus is configured to include a detection unit that detects an object in front of a host vehicle, and a control unit that, when parallel traveling vehicles which travel in parallel with each other in front of the host vehicle are detected by the detection unit and in a case where a distance between the host vehicle and the parallel traveling vehicles is longer than a separate recognition distance by which a plurality of vehicles in the vehicle-width direction can be separately recognized, presumes that there exists a preceding vehicle between the parallel traveling vehicles and controls traveling of the host vehicle.