Vehicle Obstacle Detection Using Multi-Sensor Triangulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing object detection systems for vehicles often perform control actions against the driver's intention when determining the presence and movement of obstacles, leading to unreliable detection and premature start rejection control.
Innovation Solution
An object detection apparatus with multiple range sensors installed around a vehicle, using triangulation to determine the presence and position of obstacles, and a crossing determination mechanism to release start rejection control when obstacles are confirmed to have crossed the vehicle's path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If start rejection control is performed based on single sensor detection, then obstacle detection reliability is improved, but false detection increases when obstacles temporarily leave the detection area
Solution Approach 1:
The detection area is divided into multiple regions with multiple range sensors (first detection section and second detection section) positioned at different locations. Each sensor independently monitors its own detection area, and the control unit integrates information from all sensors to determine obstacle presence, preventing false release of start rejection control when an obstacle temporarily leaves one sensor's view but remains detected by others.
Solution Approach 2:
The control unit combines detection results from multiple range sensors to make a unified determination about obstacle presence. By merging the detection information from the first and second detection sections, the system achieves more reliable obstacle detection than any single sensor could provide alone, reducing false detections while maintaining high reliability.
2Reliability
If multiple range sensors are used to improve detection accuracy, then obstacle detection reliability is improved, but device complexity increases
Solution Approach 1:
Multiple range sensors perform the same detection function but from different positions and detection areas. Each sensor is a standard range sensor component, and their results are universally processed by the control unit using the same determination logic, achieving enhanced reliability without requiring complex specialized components for each sensor.
Solution Approach 2:
The control unit continuously receives detection results from multiple sensors and dynamically adjusts the start rejection control based on the integrated feedback. When all sensors detect an obstacle, start rejection is maintained; when sensors indicate obstacle absence, control is released. This feedback mechanism efficiently processes multiple sensor inputs without requiring complex decision logic.
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
Improves the accuracy and reliability of detecting obstacles and releasing start rejection control in a manner aligned with the driver's intentions by using continuous detection from multiple sensors and determining obstacle crossing states.
Implementation Method 1
a first detection section which transmits search waves in a moving direction of the moving object, and receives reflected waves of the search waves as detection information of the object
Implementation Method 2
a second detection section which transmits search waves in the moving direction of the movable body from a position different from that of the first detection section, and receives reflected waves of the search waves as detection information of the object
Data Source
AI summary
An object detection apparatus is installed in a movable body and detects an object. The apparatus includes a first detection section which transmits search waves in a moving direction of the moving object, and receives reflected waves as detection information to detect the object, a second detection section which transmits search waves in the moving direction, and receives reflected waves as detection information, an obstacle determination section which determines that an obstacle is present in the moving direction, based on detection results of the first and second detection sections, and a crossing determination section which determines that the obstacle has crossed, in a state where the obstacle determination section determines that the obstacle is present, if the determination that the obstacle is present is made by continuous detection, and if a state where the object is continuously detected changes to a state where the object is not detected.