Vehicle Control Shielding Ratio for Partially Hidden Vehicles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle control systems struggle to apply information on preceding vehicle groups to vehicle control when rear portions of the preceding vehicles are partially hidden, leading to potential collisions due to incomplete data from millimeter wave radar and camera systems.
Innovation Solution
A vehicle control system incorporating a millimeter wave radar, a camera device or LIDAR, and a controller that calculates a shielding ratio based on positional and outer shape information to determine if information on preceding vehicles can be applied to the actuator, even if rear portions are partially hidden, ensuring safe vehicle control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the camera device is used to grasp the position of the second preceding vehicle, then the position information can be obtained when the vehicle is visible, but the position information cannot be obtained when the rear portion is hidden by the first preceding vehicle
Solution Approach 1:
The patent introduces a shielding ratio calculation mechanism as an intermediary assessment tool. The controller calculates the shielding ratio based on outer shape information from the camera device and position information from the millimeter wave radar to determine whether the preceding vehicle group information should be applied to vehicle control, even when the rear portion is partially hidden
Solution Approach 2:
The patent changes the parameter assessment from binary (visible/not visible) to continuous by calculating the shielding ratio. This allows the system to make informed decisions based on the degree of obscuration rather than completely discarding the information when the vehicle is partially hidden
2Measurement precision
If the system requires complete visibility of the rear portion to apply preceding vehicle information, then measurement precision is maintained, but the applicability of information is reduced when vehicles are partially hidden
Solution Approach 1:
The patent applies local quality assessment by evaluating different portions of the preceding vehicle independently. The shielding ratio calculation considers the visible portion characteristics and determines applicability based on local visibility conditions rather than requiring complete visibility of the entire vehicle
Solution Approach 2:
The patent allows partial application of preceding vehicle information by calculating the shielding ratio. When the ratio indicates sufficient visibility of critical portions, the system applies the information even if the entire vehicle is not fully visible, accepting partial information for control purposes
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 application of information on preceding vehicle groups to vehicle control systems, enhancing safety by determining the applicability of information on partially hidden vehicles, thus reducing the risk of collisions.
Implementation Method 1
The millimeter wave radar specifies a position of the second preceding vehicle. The millimeter wave radar is configured to acquire positional information on a plurality of preceding vehicles traveling along an own lane in front of an own vehicle.
Implementation Method 2
The camera device processes an image data ahead of the own vehicle. The camera device is configured to acquire outer shape information on rear portions of the preceding vehicles.
Implementation Method 3
The camera device or LIDER is configured to acquire outer shape information on rear portions of the preceding vehicles.
Data Source
AI summary
A technology is provided in which not only the information on the first preceding vehicle ILV but also the information on the preceding vehicle group LVG ahead of the first preceding vehicle ILV is applied to the travel assist control. Firstly, specification processing of a preceding vehicle LV on the own lane is executed (step S1). Subsequently, landmark information on the preceding vehicle LV is graded (step S2). Subsequently, a shielding ratio SR of the preceding vehicle LV belonging to the preceding vehicle group LVG is calculated for each preceding vehicle LV (step S3). Subsequently, determination processing is executed whether or not to apply the information on the preceding vehicle group LVG to travel assist control (step S4).