Abnormal Driver Stop Control to Avoid Intersection Obstruction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle control devices struggle to safely stop vehicles without navigation systems when determining a driver is in an abnormal state, as they cannot accurately control the stop position, potentially leading to obstruction at intersections or other specific spots.
Innovation Solution
A vehicle control device equipped with an operation amount sensor, image sensor, and controller that executes deceleration control based on driver operation data and visual cues from the image sensor to determine if the driver is in an abnormal state, and adjusts the stop position to avoid intersections or other specific spots by maintaining vehicle speed until it is safe to stop.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle control device executes deceleration control to stop the vehicle when the driver is in an abnormal state, then the driver safety is improved, but the vehicle may stop at specific spots (intersections, railroad crossings) blocking other vehicles and pedestrians
Solution Approach 1:
The control device performs preliminary identification of specific spots (intersections, railroad crossings) using map information and vehicle position data before executing deceleration control. When a specific spot is detected ahead, the controller adjusts the deceleration profile to ensure the vehicle does not stop at that location, instead stopping at a safe position after passing through it. This preliminary action prevents the harmful effect of blocking intersections while maintaining driver safety.
Solution Approach 2:
The control device continuously monitors vehicle position, speed, and surrounding environment during deceleration control execution. Based on real-time feedback about whether the vehicle is approaching a specific spot and current deceleration status, the controller dynamically adjusts the deceleration rate and timing to avoid stopping at intersections or railroad crossings, thereby resolving the contradiction between stopping for safety and avoiding obstruction.
2Measurement precision
If the vehicle control device uses map information and navigation system to control stop position, then the stop position accuracy is improved, but the device cannot identify position on map when navigation system is not provided
Solution Approach 1:
The control device is designed to work with multiple positioning approaches: it can use navigation system map information when available, and alternatively use image recognition of road markings and environmental features when no navigation system is present. This multi-functional capability ensures the device can accurately identify specific spots and control stop positions across different vehicle configurations, resolving the contradiction between precision and adaptability.
Solution Approach 2:
When a navigation system is not available, the control device uses image sensors to capture visual information of the road environment as an intermediary means to identify specific spots like intersections and railroad crossings. The image recognition system serves as a mediator to provide position and landmark information that would otherwise come from the navigation system, enabling stop position control in vehicles without navigation equipment.
3Object-affected harmful factors
If the vehicle control device stops the vehicle after passing through the intersection when there is a possibility of stopping at the intersection, then the obstruction problem is reduced, but the device cannot determine appropriate stop position control when no navigation system is provided
Solution Approach 1:
The control device performs preliminary identification of specific spots using image recognition of road markings (such as discontinuous separation lines indicating intersections) before reaching them. When an intersection or railroad crossing is detected ahead, the controller proactively adjusts the deceleration profile to ensure the vehicle passes through without stopping, then stops at a safe position afterward. This preliminary detection and action simplifies the control logic by providing clear decision criteria based on visual road features.
Solution Approach 2:
The control device replaces the navigation system's GPS and map-matching mechanism with image-based visual recognition of road markings and environmental features. By using image sensors to detect specific patterns (discontinuous separation lines, railroad crossing markings), the device substitutes the complex navigation-based positioning system with a simpler visual recognition approach that provides sufficient information for stop position control without requiring navigation hardware.
Data Source
AI summary
A vehicle control device executes, when a driver is in an abnormal state, deceleration control for decelerating a vehicle to stop the vehicle, and the vehicle control device determines whether the vehicle is likely to stop at a specific spot based on an image acquired by an image sensor during the execution of the deceleration control. The specific spot is a spot at which another physical body moves in a direction intersecting with a travel direction of the vehicle. When the vehicle is likely to stop at the specific spot, the vehicle control device executes control for causing the vehicle to pass through the specific spot and stops the vehicle thereafter.