Speed-Adaptive Obstacle Detection Using GPS Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional obstacle detection systems for vehicles fail to improve obstacle detection response speed and synchronize data from heterogeneous sensors effectively, leading to inefficiencies in high-speed environments.
Innovation Solution
An apparatus and method that adjust the detection region of camera sensors and the field of view of laser scanner sensors based on vehicle speed using a GPS PPS signal for synchronization, generating detection data that integrates information from multiple sensors to enhance response speed and synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the detection region and field of view are reduced to increase obstacle detection response speed, then obstacle detection response speed is improved, but the detection coverage area is reduced
Solution Approach 1:
The patent applies dynamics by making the detection region and field of view adjustable based on vehicle speed. The system dynamically changes the detection parameters: at high speeds, the detection region is reduced to increase response speed, while at low speeds, the detection region is expanded to maintain comprehensive coverage. This resolves the contradiction by adapting the detection coverage area according to operational conditions.
Solution Approach 2:
The system changes the detection parameters (detection region size, field of view angle) based on vehicle speed parameters. When vehicle speed increases, the system reduces the detection region and field of view to process fewer data points and improve response speed. When vehicle speed decreases, the system expands the detection region to maintain safety coverage, thus resolving the contradiction through parameter adaptation.
2Measurement precision
If multiple heterogeneous sensors are integrated to improve detection accuracy, then detection accuracy is improved, but temporal synchronization difficulty increases
Solution Approach 1:
The patent introduces a synchronization signal as an intermediary to coordinate multiple heterogeneous sensors. The synchronization signal provides a common time reference that enables temporal alignment of detection data from sensors with different processing speeds and output formats, thereby reducing the complexity of integrating heterogeneous sensor data while maintaining detection accuracy.
3Productivity
If the detection region is reduced to improve response speed, then obstacle detection response speed is improved, but the amount of detection data is reduced
Solution Approach 1:
The system dynamically adjusts the detection region based on vehicle speed to optimize the balance between data processing efficiency and detection data completeness. At high speeds where rapid response is critical, the detection region is reduced to improve processing efficiency. At low speeds where comprehensive monitoring is feasible, the detection region is expanded to maintain data completeness, thus resolving the contradiction through speed-adaptive adjustment.
Data Source
AI summary
Disclosed herein are an apparatus and method for detecting an obstacle adaptively to vehicle speed. The apparatus includes a control unit, a speed-adaptive camera sensor, a speed-adaptive laser scanner sensor, and a detection data integration unit. The control unit receives information about the speed of a vehicle and a Pulse Per Second (PPS) signal from a Global Positioning System (GPS) module. The speed-adaptive camera sensor adjusts the range of a detection region based on the information about the speed of the vehicle, and generates first detection data on an object. The speed-adaptive laser scanner sensor adjusts the range of the angle of the field of view of a laser scanner based on the information about the speed of the vehicle, and generates second detection data on the object. The detection data integration unit outputs obstacle detection data.