Vehicle Radar Object Distinction via Coupling Range Segmentation
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Solution Overview
Problem
Radar devices often erroneously determine different objects as a single object, leading to incorrect vehicle control due to the failure in accurately distinguishing between detection points within a coupling range.
Innovation Solution
A radar device with a reading unit, continuity determination unit, setting unit, and object determination unit that reads detection points from memory, determines continuity of detection points, sets a second representative detection point when the first is not detected, and determines if points are from the same or different objects based on distance, preventing erroneous object recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a coupling range is provided to group detection points within a predetermined distance range as a single object, then the radar device can simplify object information processing, but different objects may be erroneously determined as a single object when their detection points fall within the same coupling range
Solution Approach 1:
The patent segments the coupling range into multiple sub-ranges based on the longitudinal positions of detection points. By dividing the coupling range into first coupling range (from host vehicle to first detection point) and second coupling range (from first detection point to second detection point), the system can distinguish between objects that would otherwise be grouped together, thereby resolving the contradiction between processing simplicity and object distinction accuracy.
2Ease of operation
If a representative detection point is set to the closest detection point to the host vehicle, then the radar device can simplify representative point selection, but when the representative detection point is not detected in subsequent scanning, another detection point may be erroneously set as the new representative point, causing erroneous object recognition
Solution Approach 1:
The patent performs preliminary determination of whether a detection point is continuously detected before setting it as the representative detection point. By checking continuity in advance, the system prevents erroneous selection of representative points from different objects, thereby maintaining reliability while keeping the selection process simple.
Solution Approach 2:
The patent implements a feedback mechanism where the system checks whether the representative detection point is continuously detected in subsequent scanning. If not, the system uses feedback information about detection continuity to determine whether to switch to another detection point, thereby preventing erroneous object recognition while maintaining ease of operation.
3Productivity
If detection points from multiple objects within a coupling range are treated as a single object, then the radar device can reduce processing requirements, but vehicle control may be performed based on incorrect object information, causing erroneous vehicle control
Solution Approach 1:
The patent segments the coupling range into multiple sub-ranges based on longitudinal positions, allowing the system to process object information more efficiently while maintaining accuracy. By dividing the range and applying different processing rules to different segments, the system achieves both productivity improvement and reliability maintenance.
Solution Approach 2:
The patent applies different processing qualities to different parts of the coupling range. The first coupling range and second coupling range are processed differently based on their positions and the detection points they contain, allowing the system to maintain vehicle control accuracy while improving overall processing efficiency through localized optimization.
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
Prevents erroneous vehicle control by accurately distinguishing between different objects and recognizing them as separate entities, ensuring correct vehicle control by determining object information transmission based on object determination unit results.
Implementation Method 1
a radar device which is mounted on a vehicle and is operable to scan a transmission wave to detect a detection point representing a position of an object disposed around the vehicle on the basis of a reflected wave of the transmission wave from the object
Data Source
AI summary
A vehicle mounted radar device operable to scan a transmission wave to detect a detection point representing a position of an object disposed around the vehicle on the basis of a reflected wave of the transmission wave from the object. The radar device includes a reading unit, a continuity determination unit, a setting unit, anti an object determination unit that are configured to prevent the radar device from erroneously determining different pieces of object information as a single object.