Rear Cross-Traffic Alert Logic for Sensing Blockage False Alerts
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Solution Overview
Problem
Conventional Rear Cross-Traffic Alert (RCTA) systems often generate false alerts due to sensing blockage by surrounding vehicles, leading to unnecessary driver distraction and missed alerts when a target vehicle approaches from a blind spot.
Innovation Solution
A vehicle alert system that includes a detection sensor to identify approaching vehicles using ultrasonic waves, cameras, lidar, or radar, and an alert determiner that outputs alerts only when there is no sensing blockage and the target vehicle meets specific criteria, such as lateral distance and speed thresholds, to prevent false alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the RCTA system generates an alert signal when a target vehicle is detected, then driver safety is improved by warning of approaching vehicles, but false alerts are generated when sensing blockage occurs causing driver distraction
Solution Approach 1:
The system performs preliminary detection of sensing blockage conditions before generating alert signals. By detecting the blockage state in advance and using it as a prerequisite condition for alert generation, the system prevents false alerts from being generated when the sensor view is obstructed, thereby improving alert reliability without causing driver distraction
Solution Approach 2:
The system continuously monitors the sensing blockage state and uses this feedback information to dynamically control alert signal generation. When blockage is detected, the system adjusts its alert behavior accordingly, creating a closed-loop control mechanism that adapts to changing environmental conditions and prevents false alerts
2Measurement precision
If the detection sensor monitors continuously to detect approaching vehicles, then detection reliability is improved, but false alerts occur due to sensing blockage by surrounding vehicles
Solution Approach 1:
The system performs preliminary detection of sensing blockage conditions before generating alert signals. By detecting the blockage state in advance and using it as a prerequisite condition for alert generation, the system prevents false alerts from being generated when the sensor view is obstructed, thereby improving alert reliability without causing driver distraction
Solution Approach 2:
The system dynamically adjusts its detection and alert behavior based on the real-time sensing blockage state. When blockage is detected, the system modifies its operation to avoid false alerts, making the detection system adaptive to changing environmental conditions rather than operating with fixed parameters
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 system effectively reduces false alerts by ensuring alerts are only generated when necessary, improving driver safety by minimizing unnecessary warnings and maintaining accurate detection of approaching vehicles.
Implementation Method 1
The detection sensor may be further configured to detect the target vehicle through an ultrasonic wave
Implementation Method 2
The detection sensor may be further configured to detect the target vehicle through an ultrasonic wave, a camera, a lidar, or a radar
Implementation Method 3
The detection sensor may be further configured to detect the target vehicle through an ultrasonic wave, a camera, a lidar, or a radar
Data Source
AI summary
A vehicle alert system includes a detection sensor configured to detect a target vehicle approaching a subject vehicle, a storage configured to store a false alert condition comprising a position or lateral error of the target vehicle with respect to the subject vehicle, and an alert determiner configured to output an alert signal when the target vehicle is detected by the detection sensor and no sensing blockage occurs, and not output the alert signal when the sensing blockage occurs and the detected target vehicle satisfies the false alert condition.