In-Cabin Radar Child Detection With False Positive Mitigation
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Solution Overview
Problem
Existing child presence detection systems in vehicles suffer from high false positive rates, leading to alert fatigue and potential neglect of real alerts due to inaccurate detection of living bodies.
Innovation Solution
A radar-based system with a processor unit that includes modules for vehicle vibration detection, temporal behavior analysis, and spatial characteristic analysis to accurately identify breathing patterns and spatial features, combined with a pet mitigation module to distinguish between humans and animals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If simple detection methods are used, then device complexity is reduced, but measurement precision deteriorates leading to high false positive rates
Solution Approach 1:
The patent combines multiple detection modules (radar unit, vibration detection module, temporal behavior analysis module, spatial characteristic analysis module) into an integrated system. These modules work together to analyze multiple characteristics simultaneously, achieving high detection accuracy without requiring any single module to be overly complex.
Solution Approach 2:
The detection system is divided into distinct functional modules: radar unit for electromagnetic wave transmission and reception, vibration detection module for cabin vibration analysis, temporal behavior analysis module for breathing pattern recognition, and spatial characteristic analysis module for position analysis. This segmentation allows each module to perform a specific function efficiently while contributing to overall system accuracy.
2Measurement precision
If multiple detection modules are integrated, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The processor unit serves multiple functions: it processes radar data, analyzes vibration signals, performs temporal behavior analysis, conducts spatial characteristic analysis, and generates alerts. This multi-functionality reduces the need for separate dedicated hardware for each function, thereby managing system complexity while maintaining high detection precision.
Solution Approach 2:
The processor unit acts as an intermediary that receives data from multiple detection modules (radar unit, vibration detection module) and coordinates their outputs. It integrates information from different sources and applies analysis algorithms to produce the final detection result, managing the complexity of interacting modules through a central coordination point.
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 achieves a high true positive detection rate with low false positives, ensuring accurate identification of infants or children in vehicle cabins and reducing the risk of alert fatigue by minimizing false alarms.
Implementation Method 1
a radar unit comprising at least one transmitter antenna connected to an oscillator and configured to transmit electromagnetic waves into the vehicle cabin, and at least one receiver antenna configured to receive electromagnetic waves reflected by objects within the vehicle cabin
Implementation Method 2
a vehicle vibration detection module operable to detect vibrations of the vehicle cabin
Implementation Method 3
a temporal behavior analysis module operable to analyze temporal characteristics of movements and to identify oscillations characteristic of breathing
Data Source
AI summary
Systems and methods for detecting living bodies in vehicles and generating alerts only if a child is detected. A radar detection system uses vehicle vibration, temporal behavior analysis and spatial characteristics modules to detect false positives by analyzing image data over time and space to distinguish between real children and other similar voxel clusters within the radar images.