Side Safety Assistant Device for Large Vehicles
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Solution Overview
Problem
Large vehicles face challenges in identifying and detecting moving objects like bicycles, two-wheeled vehicles, or pedestrians due to their size and angle of camera installation, leading to potential accidents during turns, especially when the objects are in the vehicle's blind spots or obscured by light or shade.
Innovation Solution
A safety assistant system using cameras installed at the side front and rear of the large vehicle, facing each other, to image and recognize moving objects through machine learning techniques, and output collision risk signals to warn the driver or initiate emergency braking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If cameras are installed at the upper frame of the large vehicle to monitor the surrounding area, then the monitoring coverage is improved, but the recognition accuracy of moving objects deteriorates due to top-down imaging angles and light/shade interference
Solution Approach 1:
The patent transitions from top-down imaging (vertical dimension) to side-facing imaging (horizontal dimension). By installing cameras at the side front and side rear of the vehicle that face each other, the system captures images from a lateral perspective rather than from above, enabling better shape recognition and eliminating light/shade interference while maintaining comprehensive monitoring coverage
Solution Approach 2:
The monitoring system is divided into multiple segmented camera units positioned at different locations (side front camera and side rear camera). Each camera captures a specific portion of the dangerous zone, and their combined fields of view cover the entire side area of the vehicle, achieving both localized precision and global coverage
2Reliability
If the large vehicle makes a turn at low speed along a pedestrian passage, then the safety of pedestrians is improved, but the risk of collision with bicycles or two-wheeled vehicles in the blind spot increases
Solution Approach 1:
The system performs preliminary detection and warning before a collision can occur. By continuously monitoring the dangerous zone and identifying bicycles or two-wheeled vehicles in advance, the system provides early warning signals to the driver, enabling preventive action before the vehicle enters the blind spot or makes a turn that would cause collision
Solution Approach 2:
The system establishes a feedback loop by continuously capturing images, analyzing them to detect moving objects, and providing real-time warning signals to the driver. This closed-loop feedback mechanism enables the driver to adjust driving behavior based on detected objects in the dangerous zone, preventing collisions while maintaining safe turning operations
3Measurement precision
If SRR (Short Range Rader) is installed at the side rear of the large vehicle to monitor moving objects, then the detection capability is improved, but the coverage area deteriorates due to short measurement distance and interference from metallic cargo bed
Solution Approach 1:
The patent replaces the radar-based detection system (SRR) with an optical imaging system using cameras. By substituting electromagnetic wave-based radar with light-based camera imaging, the system eliminates interference from metallic cargo bed reflections and achieves both precise detection and extensive coverage without the limitations of radar propagation
Solution Approach 2:
The camera-based system serves multiple functions simultaneously: it detects objects at various distances, provides wide-angle coverage of the dangerous zone, and is not affected by metallic interference. This multi-functional capability replaces the need for specialized radar systems while achieving superior overall performance
Data Source
AI summary
A side safety assistant device for a large vehicle may include: a rear camera module mounted at the rear of at least one side surface of a large vehicle and configured to image an object while facing the front of the large vehicle; a front camera module mounted at the front of at least one side surface of the large vehicle and configured to image an object while facing the rear of the large vehicle; one or more image recognition modules configured to receive an image taken by the rear and front camera modules, extract an object included in the image, determine whether the extracted object is a moving object, determine whether the moving object is located in a preset dangerous zone, and output a collision risk signal; a warning unit configured to output a visual or auditory warning signal; and a control unit configured to operate the warning unit.