Vehicle Radar Sensor Handover for Continuous Object Tracking
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Solution Overview
Problem
Conventional radar systems for vehicles rely on limited information from individual sensors, leading to detection errors and varying performance based on beam angle, necessitating multiple radar systems to improve functionality, but lack effective methods for information sharing and seamless object detection across sensor fields.
Innovation Solution
A radar apparatus with multiple sensors that integrates and processes duplicately detected information and hands over object data between sensors, ensuring continuous detection by generating and integrating data from overlapping sensor fields, using a controller and domain control unit to manage data processing and handover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radar sensors are deployed to improve detection coverage and functionality, then the sensing capability and field of view are improved, but the complexity of information integration and data processing increases
Solution Approach 1:
The patent merges detection information from multiple radar sensors by integrating sensing data in the angle domain. The controller consolidates duplicately detected object information from overlapping fields of sensing into unified detection results, reducing redundant data while maintaining comprehensive coverage.
Solution Approach 2:
The controller acts as an intermediary that receives sensing data from multiple radar sensors, processes the information through angle domain integration, and produces consolidated detection results. This intermediary processing layer simplifies the complexity of direct multi-sensor integration.
2Reliability
If multiple radar sensors are used to improve detection reliability, then the detection accuracy is improved, but the difficulty of detecting and measuring objects across different fields of sensing increases
Solution Approach 1:
The patent transforms the detection problem from spatial domain tracking to angle domain integration. By converting sensor data into angle domain representations, the system simplifies the process of tracking objects that move between different sensor fields, as angle coordinates provide a natural framework for integrating detections from multiple perspectives.
Solution Approach 2:
The angle domain integration approach serves as a universal method that handles all objects regardless of which specific sensor detects them. The same integration process works for objects in overlapping fields, objects moving between fields, and objects detected by single sensors, providing a multi-functional solution.
3Device complexity
If conventional radar systems use limited information from individual sensors to simplify processing, then the data processing complexity is reduced, but the measurement precision and detection accuracy deteriorate
Solution Approach 1:
The patent applies partial integration by focusing specifically on angle domain information from multiple sensors rather than integrating all possible parameters. This selective integration approach achieves improved detection accuracy through moderate processing complexity, avoiding the need to process excessive data while still benefiting from multi-sensor information.
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 approach enhances data processing efficiency and ensures seamless, continuous detection of objects by integrating duplicately detected information and handing over data between sensors, improving the accuracy and reliability of vehicle radar systems.
Implementation Method 1
a radar sensor that transmits a radar signal and receives a signal reflected by an object
Data Source
AI summary
A radar apparatus for a vehicle includes radar sensors, and a controller configured to generate information on the object based on a radar signal reflected by the object entering the fields of sensing of the radar sensors, wherein the controller, when the object is duplicately detected by two or more of the radar sensors, integrates two or more pieces of information on the objects detected by the two or more radar sensors, respectively, into one, and when the object moves from a field of sensing of a first radar sensor to a field of sensing of a second radar sensor, performs control to hand over the information on the object between the first radar sensor and the second radar sensor. Accordingly, information on an object detected by a radar sensor can be efficiently processed and an object moving through fields of sensing of radar sensors can be continuously detected.