Adaptive Cruise Control Adjusting Acceleration by Lane Count
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing drive control systems for adaptive cruise control in vehicles often cause discomfort to drivers by executing acceleration or deceleration in a fixed manner irrespective of the number of lanes, leading to inappropriate inter-vehicle distances and increased risk of cut-in by other vehicles.
Innovation Solution
A drive control apparatus that detects the number of lanes and adjusts the target inter-vehicle distance and control amount for acceleration or deceleration accordingly, reducing the control amount on multi-lane roads and increasing it on single-lane roads to prevent unnecessary acceleration or deceleration and minimize the risk of cut-in.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the control amount for acceleration or deceleration is increased to quickly reduce inter-vehicle distance, then the response speed improves, but driver comfort deteriorates due to abrupt control actions
Solution Approach 1:
The control amount is dynamically adjusted based on the detected number of lanes. The system switches between different control strategies: using a larger control amount for single-lane roads and a smaller control amount for multi-lane roads, making the control characteristics adaptable to different driving environments rather than fixed
Solution Approach 2:
The system changes the control parameter (control amount for acceleration/deceleration) according to the number of lanes detected. By modifying this parameter based on lane configuration, the system achieves both quick response when needed and comfort when appropriate
2Reliability
If the target inter-vehicle distance is reduced to prevent cut-in by other vehicles, then safety improves, but driver comfort deteriorates due to unnecessarily large inter-vehicle distances
Solution Approach 1:
Different target inter-vehicle distances are set for different lane configurations. The system applies local optimization by adjusting the target distance specifically for multi-lane roads where cut-in risk exists, rather than uniformly increasing distance in all situations
Solution Approach 2:
The target inter-vehicle distance parameter is changed based on the detected number of lanes. The system sets a first target distance for single-lane roads and a second (smaller) target distance for multi-lane roads, optimizing both safety and comfort for each scenario
3Reliability
If the control amount is increased to ensure sufficient allowance in single-lane roads, then safety improves, but productivity deteriorates due to excessive acceleration or deceleration
Solution Approach 1:
The control amount is dynamically adjusted based on lane configuration detection. The system uses a larger control amount for single-lane roads where safety is prioritized and a smaller control amount for multi-lane roads where fuel efficiency is improved, achieving context-dependent optimization
Solution Approach 2:
The control parameter is changed according to the number of lanes to balance safety and fuel efficiency. By setting appropriate control amounts for different road types, the system prevents unnecessary acceleration/deceleration while maintaining sufficient safety allowance when needed
Data Source
AI summary
A drive control apparatus includes: an inter-vehicle distance sensor configured to detect an inter-vehicle distance D of an own vehicle and a preceding vehicle; an inter-vehicle distance arithmetic unit; a follow driving control unit configured to perform control of acceleration or deceleration of the vehicle such that the inter-vehicle distance D coincides with a target inter-vehicle distance Dtr; a camera configured to detect the number of lanes N of a road L; an image processing unit; and a lane number determining unit. The follow driving control unit performs control of acceleration or deceleration at a maximum acceleration or deceleration Gmax according to the number of lanes N.