Stereo Camera Speed Violation Control System
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Solution Overview
Problem
Existing speed limit violation control systems rely on expensive radar technology and lack efficient methods for automatically recording and displaying speed limit violations in a user-friendly manner.
Innovation Solution
A speed limit violation control system and method utilizing a stereo distance-measuring camera and car location system to calculate vehicle speeds, automatically record videos of violating vehicles, and superimpose speed information onto the video, enabling efficient and accurate recording and display of violations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radar technology is used for speed measurement, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces the mechanical/radar-based speed measurement system with an optical imaging system. The imaging unit captures images of the vehicle, and the controller calculates speed by analyzing the displacement of the vehicle between sequential images, thereby substituting complex radar technology with a simpler camera-based optical system.
Solution Approach 2:
The system uses image copying by capturing multiple frames of the vehicle and analyzing the displacement between these copied visual representations. The controller calculates speed by comparing the position of the vehicle in sequential image copies, eliminating the need for direct radar measurement.
2Loss of information
If continuous video recording is performed, then loss of information is reduced, but loss of energy and storage requirements increase
Solution Approach 1:
Instead of continuous recording, the system employs periodic recording triggered by speed threshold detection. The imaging unit captures images continuously, but the recorder only activates when the controller detects that the calculated speed exceeds the predetermined threshold, thereby reducing energy consumption while preserving critical violation information.
Solution Approach 2:
The controller continuously monitors calculated speed and prepares recording by identifying when the speed threshold is approached or exceeded. This preliminary detection allows the system to activate recording only when necessary, preventing energy waste on non-violation periods while ensuring violation information is captured.
3Productivity
If speed threshold detection is implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
The system improves productivity by continuously monitoring the speed parameter and comparing it against a predetermined threshold value. When the calculated speed parameter exceeds this threshold, the system automatically triggers recording. This parameter-based control approach enhances detection efficiency while maintaining relatively simple control logic through straightforward threshold comparison.
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
The system provides a cost-effective and efficient means to automatically record and display speed limit violations, reducing the risk of overlooked infractions and allowing easy reference to violation situations, with adjustable recording thresholds for enhanced user understanding.
Implementation Method 1
an imaging unit that images a running vehicle
Implementation Method 2
a controller that calculates a speed of the vehicle based on the video imaged by the imaging unit
Data Source
AI summary
A speed limit violation control system of the present disclosure includes: imaging units (320, 330) which image a running vehicle; recorder (420) that records one of videos imaged by the imaging units (320, 330); and controller (360) that calculates a speed of the vehicle based on the videos of imaging units (320, 330) and determines a starting point and an ending point of the one of the videos, which is to be recorded in recorder (420), based on the calculated speed.