Radar Device Oncoming Vehicle Detection Range
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Solution Overview
Problem
Conventional radar devices struggle to correctly detect oncoming vehicles due to the 'mirror judgment processing' method, which incorrectly identifies oncoming vehicles as preceding vehicles, leading to delayed collision avoidance.
Innovation Solution
A radar device with a narrower oncoming vehicle judging range compared to the preceding vehicle judging range, utilizing a detector unit with distance and angle calculations to accurately distinguish between preceding and oncoming vehicles based on their respective judging ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the mirror judgment processing uses a predetermined range to determine objects detected by side mirrors as objects based on a preceding vehicle, then the memory capacity requirement is reduced, but oncoming vehicles are incorrectly identified as preceding vehicles leading to delayed collision avoidance
Solution Approach 1:
The patent applies local quality by setting different judging ranges for different types of vehicles: a first judging range for preceding vehicles and a narrower second judging range for oncoming vehicles. This allows the system to treat different spatial zones with different identification criteria, enabling accurate distinction between oncoming vehicles and preceding vehicles while still reducing memory requirements by consolidating objects within the appropriate range.
2Device complexity
If the mirror judgment processing consolidates objects within a predetermined range, then data processing load is reduced, but detection speed for oncoming vehicles decreases
Solution Approach 1:
The patent segments the detection space into different zones with different processing rules: objects within the second judging range (narrower range) are processed with faster identification as oncoming vehicles, while objects in the first judging range undergo more comprehensive processing. This segmentation enables the system to prioritize rapid detection of oncoming vehicles while maintaining thorough processing for other objects, thus improving detection speed without overwhelming processing complexity.
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
Enables quick and accurate detection of oncoming vehicles as separate entities, enhancing collision avoidance systems by preventing incorrect identification and allowing timely intervention.
Implementation Method 1
a transmission antenna for transmitting electromagnetic waves to an object
Implementation Method 2
a reception antenna for receiving waves reflected by the object
Data Source
AI summary
A radar device (10) comprising a transmission antenna (14) for transmitting electromagnetic waves; a reception antenna (15) for receiving waves; and a detector unit (34) which detects, based on the reflected waves, the positions of a preceding vehicle and a preceding object, judges the preceding object to be the same as the preceding vehicle if the position of the preceding object is in a predetermined preceding vehicle judging range with the position of the preceding vehicle as a reference, detects the positions of an oncoming vehicle and an oncoming object and judges the oncoming object to be the same as the oncoming vehicle if the position of the oncoming object is in a predetermined oncoming vehicle judging range with the position of the oncoming vehicle as a reference; wherein the oncoming vehicle judging range is set to be narrower than the preceding vehicle judging range.