Adaptive Visibility Range Control for Observation Targets
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Solution Overview
Problem
Current safe driving support systems rely on observation devices to notify approaching vehicles of the presence or absence of targets, but they do not account for the operational status of the device or varying conditions like temperature and speed, which can lead to inaccurate notifications.
Innovation Solution
An observation device equipped with an observation unit, storage, and a controller that updates visibility distances based on detected targets, categorizing them by type, speed, and temperature, and generates notification information to ensure accurate presence or absence reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the observation device sends presence notifications based on fixed detection range, then the system structure is simple, but the notification accuracy deteriorates when environmental conditions change
Solution Approach 1:
The patent applies dynamics by making the detection range adjustable rather than fixed. The controller dynamically changes the detection range based on environmental conditions (temperature, speed, presence of other vehicles) to maintain optimal notification accuracy. This resolves the contradiction by allowing the system to adapt its parameters in real-time rather than being constrained by a fixed structure.
Solution Approach 2:
The patent changes physical parameters (detection range, notification thresholds) based on environmental conditions. When temperature, speed, or traffic density changes, the system adjusts the detection range and notification criteria to maintain accurate presence detection. This parameter adaptation resolves the contradiction between simple fixed-range systems and accurate variable-condition detection.
2Reliability
If the observation device uses a fixed detection range, then the device complexity is low, but the reliability deteriorates under varying environmental conditions
Solution Approach 1:
The patent implements feedback by continuously monitoring environmental conditions (temperature, speed, other vehicle presence) and using this information to adjust the detection range and notification behavior. The controller receives feedback from sensors about environmental changes and modifies detection parameters accordingly, ensuring reliable notifications across varying conditions while managing system complexity through automated feedback loops.
Solution Approach 2:
The system transitions from a static fixed-range detector to a dynamic system that adapts its detection range based on real-time environmental feedback. This dynamic adjustment mechanism improves reliability under varying conditions by optimizing detection parameters for current environmental states rather than relying on a single fixed configuration.
3Loss of information
If the observation device notifies all detected targets, then the completeness of information is high, but the information quality deteriorates due to false positives from undetected device status
Solution Approach 1:
The observation device performs self-diagnosis by monitoring its own operational status (power supply, sensor functionality) and adjusts its detection and notification behavior accordingly. When the device detects it is not fully operational, it automatically modifies its detection range or notification criteria to compensate for reduced capabilities, ensuring information accuracy without requiring external intervention or complex additional systems.
Data Source
AI summary
An observation device 10 includes an observation unit 17, storage 18, and a controller 19. The observation unit 17 observes a predetermined area. The storage 18 stores a visibility distance, which is the maximum distance at which an observation target is identifiable within the predetermined area. The controller 19 identifies the distances to the position of the observation target on the basis of an observation result from the observation unit 17. The controller 19 updates the visibility distance stored in the storage 18 on the basis of the identified distance.