Vehicle Blind-Spot Trajectory Tracking for Continuous Driving Support
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Solution Overview
Problem
Existing driving support systems cannot continuously monitor and support the trajectory of a moving body when it enters a blind spot area between sensors, leading to halted or abrupt resumption of support, causing discomfort and potential collisions.
Innovation Solution
A driving support apparatus with first and second sensors on lateral sides of a vehicle, a position detection unit, a position estimation unit, and a trajectory calculation unit that estimates and calculates the trajectory of a moving body in the blind spot area, allowing continuous support execution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple sensors are mounted on the vehicle to detect moving bodies, then the detection coverage is improved, but blind spot areas remain between sensors where trajectory cannot be monitored
Solution Approach 1:
The patent introduces an intermediary estimation process that bridges the gap between sensor detection areas. When a moving body enters a blind spot area between sensors, the system estimates its position and trajectory based on the last known position and movement characteristics, rather than directly detecting it. This intermediary estimation mechanism ensures continuous trajectory monitoring without requiring physical sensor coverage of every area.
Solution Approach 2:
The system performs preliminary actions by continuously tracking and storing movement characteristics (speed, direction, acceleration) of detected moving bodies before they enter blind spot areas. This preliminary data collection enables accurate estimation of trajectory during periods when the moving body is not directly detected by sensors, maintaining continuous monitoring reliability.
2Measurement precision
If the system halts driving support when a moving body enters a blind spot area, then measurement accuracy is maintained, but driving support continuity is lost causing driver discomfort
Solution Approach 1:
The patent implements continuity of useful action by maintaining driving support functionality even when moving bodies are in blind spot areas. Instead of halting support when direct detection is lost, the system continuously estimates trajectory using stored movement characteristics and last known positions, ensuring uninterrupted driving support that maintains driver comfort and safety without compromising on accuracy requirements.
3Speed
If the system abruptly resumes driving support when a moving body re-enters the detected area, then response speed is improved, but driver comfort deteriorates due to abrupt changes
Solution Approach 1:
The patent applies beforehand cushioning by preparing transition protocols in advance. When a moving body re-enters the sensor detection area, the system smoothly transitions from estimation mode back to direct detection mode, rather than abruptly resuming full support. This cushioning approach prevents sudden changes that would discomfort the driver, while still maintaining fast response to actual threats.
4Duration of action of stationary object
If trajectory calculation is performed continuously including in blind spot areas, then driving support continuity is improved, but computational complexity increases
Solution Approach 1:
The patent applies partial action by performing full trajectory calculation only when necessary (when moving bodies are in blind spot areas or near boundaries), rather than continuously for all detected objects. The system uses simplified estimation based on stored movement characteristics for blind spot scenarios, reducing computational complexity while maintaining continuity. Full calculation is reserved for cases requiring higher precision.
Data Source
AI summary
A driving support apparatus according to the invention estimates the position of a moving body by controlling a position estimation unit when the tracking-target moving body leaves a first area or a second area to enter a blind spot area and detects the position of the moving body by controlling a position detection unit when the moving body leaves the blind spot area to enter the first area or the second area. In this manner, the trajectory of the tracking-target moving body is calculated so that the trajectory of the moving body detected in the first area or the second area and the trajectory of the moving body estimated in the blind spot area are continuous to each other and driving support is executed based on the calculated trajectory of the tracking-target moving body.