Automotive Radar System Integrating Object Detection and Street Condition Monitoring
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Solution Overview
Problem
Current radar systems for automotive applications require multiple sensors for object detection and street condition monitoring, leading to increased complexity, cost, and space requirements, as well as the need for additional interfaces and testing, which complicates integration into vehicles and hinders efficient autonomous driving capabilities.
Innovation Solution
A single radar system with main and street condition monitoring (SCM) antennas that can switch between object detection and location and street condition monitoring by adjusting modulation schemes, utilizing polarimetric antennas with high dynamic range and frequency-selective elements to share channels and reduce the number of antennas, allowing for simultaneous object detection and street condition monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple separate radar systems are used for object detection and street condition monitoring, then measurement precision and reliability are improved, but device complexity and cost increase
Solution Approach 1:
The patent combines object detection and street condition monitoring functions into a single radar system with integrated transmit and receive antennas. The system uses a unified signal processing architecture that handles both functions simultaneously, eliminating the need for separate radar systems and reducing overall system complexity while maintaining detection precision through specialized signal processing for each function.
Solution Approach 2:
The radar system is designed with multi-functionality to perform both object detection and street condition monitoring using the same hardware platform. The transmit antennas and receive antennas are configured to support dual operations, and the signal processing unit can switch between different processing modes to serve different functions, making the system universal and reducing the need for additional specialized equipment.
2Adaptability or versatility
If multiple separate radar systems are deployed, then functional versatility is improved, but ease of manufacture and integration worsen
Solution Approach 1:
The patent merges multiple functional capabilities into a single integrated radar system, combining object detection and street condition monitoring in one unit. This consolidation simplifies the manufacturing process by reducing the number of components that need to be produced and assembled, and eases integration into vehicles by providing a single interface and unified calibration procedure.
Solution Approach 2:
The radar system achieves functional versatility through multi-functionality, where a single system performs both object detection and street condition monitoring. The system includes configurable antennas and signal processing capabilities that can be adapted to different operational modes, providing the versatility of multiple systems while maintaining the manufacturing and integration simplicity of a single unit.
3Measurement precision
If additional radar systems are added for street condition monitoring, then measurement precision for road conditions is improved, but loss of substance and cost increase
Solution Approach 1:
The patent merges street condition monitoring capabilities into the existing radar system infrastructure, combining road condition detection with object detection functions. This approach eliminates the need for additional dedicated radar systems for street condition monitoring, reducing material costs while maintaining measurement precision through specialized signal processing techniques that analyze reflected signals for road surface characteristics.
4Reliability
If separate radar systems are used for different functions, then reliability of individual functions is improved, but device complexity and testing requirements increase
Solution Approach 1:
The patent combines multiple functional systems into a single integrated radar platform, merging object detection and street condition monitoring while maintaining functional reliability through dedicated signal processing paths for each function. The unified system reduces integration complexity by providing a single hardware platform and centralized control architecture, eliminating the need to manage multiple separate systems and their interconnections.
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
This integrated radar system simplifies integration, reduces costs, and provides reliable information about vehicle surroundings by using a single system for both object detection and street condition monitoring, maintaining performance while minimizing additional hardware and testing requirements.
Implementation Method 1
The radar sensor emits an electromagnetic signal, usually as a directed beam, with a specific frequency such as for example 77 GHz. The signal is reflected off an object and the reflected signal (sometimes called an 'echo') is received and detected by the radar sensor
Implementation Method 2
The signal is reflected off an object and the reflected signal (sometimes called an 'echo') is received and detected by the radar sensor
Implementation Method 3
The SCM antennas are polarimetric antennas meaning that they are configured to emit and receive at a certain polarization. Examples of such polarization include horizontal and vertical linear polarization as well as left-handed and right-handed circular polarization
Data Source
AI summary
A radar system for a vehicle includes: at least one main transmit antenna configured to transmit main radar waves essentially parallel to a road on which the vehicle is standing or driving; at least one main receive antenna configured to receive reflections of the main radar waves off objects on the road; a first street condition monitoring, SCM, transmit antenna configured to transmit first polarized radar waves essentially directed to the road at a first polarization; a second SCM transmit antenna configured to transmit second polarized radar waves essentially directed to the road at a second polarization different from the first polarization; a first SCM receive antenna configured to receive, at the first polarization, reflections of the polarized radar waves off the road; and a second SCM receive antenna configured to receive, at the second polarization, reflections of the polarized radar waves off the road.