Distributed Vehicle Radar Motion Detection with Optical Data Links
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Solution Overview
Problem
Existing radar systems for vehicles have low resolution and are time-consuming in data transmission and processing, especially when multiple radar devices are used, and they struggle to provide reliable, real-time movement information about surrounding vehicles under various environmental conditions.
Innovation Solution
A radar system with a central control device and distributed radar devices uses optical transmission techniques for fast data exchange, allowing for high-resolution, real-time capture and processing of three-dimensional point clouds to determine the movement of surrounding vehicles, including rotational and translational relations, and provides this information for vehicle control systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple individual radar devices are used to capture environment data, then the detection coverage and reliability are improved, but the data transmission time and processing time increase significantly
Solution Approach 1:
The patent merges multiple distributed radar devices into a unified radar system with a central control device. The central control device coordinates the multiple radar devices to capture data simultaneously and processes all data in a centralized manner, eliminating the need for each device to transmit and process data independently. This combining approach maintains the detection reliability of multiple devices while significantly reducing the overall data transmission and processing time.
2Area of stationary object
If multiple individual radar devices are used to capture environment data, then the detection coverage is improved, but the processing complexity increases
Solution Approach 1:
The patent segments the processing tasks by assigning specific functions to different components: distributed radar devices are responsible only for data capture in their respective zones, while the central control device handles all data fusion, object detection, and tracking operations. This segmentation allows the system to maintain wide detection coverage through multiple devices without increasing overall processing complexity, as each device performs only its specialized capture function.
3Ease of manufacture
If traditional data transmission methods are used between radar devices and control unit, then the system is simple to implement, but the real-time processing capability is insufficient
Solution Approach 1:
The patent replaces traditional electrical data transmission systems with optical transmission technology. Optical transmission uses light signals instead of electrical signals to communicate between radar devices and the central control device, providing significantly higher bandwidth and faster data transfer rates. This substitution maintains relative implementation simplicity while dramatically improving real-time processing capability, allowing the system to handle large volumes of radar data from multiple devices simultaneously.
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 enables quick and reliable provision of vehicle movement information, enhancing the accuracy and speed of data processing, enabling real-time control commands for driving, braking, and steering, particularly in adverse weather conditions.
Implementation Method 1
at least one radar device configured to capture at least one object in an environment of the vehicle
Implementation Method 2
The radar information is captured continuously in predetermined time intervals
Implementation Method 3
The radar system captures the radar information by using at least partially optical transmission techniques for at least a radar system internal transmission of data and/or information
Data Source
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AI summary
The invention relates to a method to provide a movement information (20) about at least one second vehicle (5) by a first vehicle (1), comprising: capturing a radar information (16) describing at least a part of an environment (6in which the at least one second vehicle (5) is located at least at two consecutive points in time; determining a three-dimensional point cloud (9) for each point in time; determining a relation information (18) describing a translational and rotational relation between the point clouds (9); determining a movement information (20) describing a movement of the at least one second vehicle (5); and providing the determined movement information (20). A radar system (2) captures the radar information (16) by using at least partially optical transmission techniques for radar system internal transmission of data and/or information between individual radar devices (3) and a central control device (4) of the radar system (2).