Radar Representative Point Stabilization for Moving Body Collision Detection
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Solution Overview
Problem
Radar devices used in moving bodies for collision prediction inaccurately determine the position of detection targets due to changes in the relative position between the detection target and the moving body, leading to erroneous collision predictions and decreased accuracy in detecting the movement speed of objects.
Innovation Solution
An object detection apparatus with electromagnetic wave radiating-receiving means, reflection point identifying means, and representative point setting means that corrects the representative point to minimize changes caused by changes in the relative position between the detection target and the moving body, ensuring accurate positioning and movement determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the representative point is set to the reflection point closest to the subject moving body among grouped reflection points, then the collision prediction function can be implemented, but the representative point changes position due to changes in relative position between the detection target object and the subject moving body, leading to erroneous collision determination
Solution Approach 1:
The patent applies preliminary action by storing the position of the representative point at the time of object detection in a memory unit before relative position changes occur. This stored position serves as a reference to prevent erroneous changes when the radar detects new reflection points due to relative motion, thereby maintaining measurement precision while preserving collision prediction functionality.
2Speed
If the representative point is set based on the closest reflection point, then the system can respond to detected objects, but the position of the representative point fluctuates as the relative position changes, causing temporary decrease in detection accuracy
Solution Approach 1:
The patent implements feedback by comparing newly detected reflection points with the stored representative point position from previous detections. When a new reflection point is detected, the system checks whether it truly represents a new object or is merely a result of relative position changes, using the stored position as feedback reference. This prevents false positives while maintaining rapid response capability.
3Area of stationary object
If multiple beams are radiated to detect reflection points for collision prediction, then the detection coverage is improved, but the complexity of determining and stabilizing the representative point increases
Solution Approach 1:
The patent extracts and stores only the essential information needed for representative point stabilization - specifically, the position data of the representative point at detection time - separating this from the complex processing of multiple reflection points. This extracted stored position serves as a simple reference that reduces the complexity of determining the representative point while maintaining wide detection coverage through multiple beams.
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 apparatus improves the accuracy of collision prediction by stabilizing the representative point, reducing errors in collision determination and enhancing the detection of relative movement between the moving body and the detection target.
Implementation Method 1
electromagnetic wave radiating-receiving means for radiating an electromagnetic wave and receiving a reflection wave of the radiated electromagnetic wave
Data Source
AI summary
An object detection apparatus including: an electromagnetic wave radiating-receiver radiating an electromagnetic wave and receiving a reflection wave of the radiated electromagnetic wave; a reflection point identifying mechanism identifying, based on data regarding the reflection wave received by the electromagnetic wave radiating-receiver, a reflection point on a detection target object at which the radiated electromagnetic wave was reflected; and a representative point setting mechanism setting a representative point representing the position of the detection target object based on the reflection point identified by the reflection point identifying mechanism. The object detection apparatus outputs data regarding the set representative point. The representative point setting mechanism performs a correction prohibiting or minimizing a change of position of the representative point in the detection target object which occurs as a result of a change in a relative position between the detection target object and the moving body.