Vehicle Child Presence Alerts Using Radar and Mobile Proximity
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Solution Overview
Problem
Conventional child presence detection systems in vehicles generate excessive alerts, leading to user annoyance and potential disabling of alerts, which can result in missed warnings during emergency scenarios, as they rely solely on presence detection without considering the attendance status of children.
Innovation Solution
A system comprising a radar device and a mobile device that detects the presence of people in a vehicle, determines the age range of individuals, and suppresses alerts when the mobile device is within a predetermined range and moving, indicating an adult is nearby, thereby preventing unnecessary alarms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If child presence detection alerts are generated for all detected children in vehicles, then child safety monitoring is improved, but user annoyance increases and alerts may be disabled
Solution Approach 1:
The system changes the parameters used for alert generation from simple presence detection to a composite assessment including presence detection, age range determination, and mobile device proximity/movement analysis. This multi-parameter approach allows the system to distinguish between genuine safety concerns and non-critical situations, reducing false alarms while maintaining reliable monitoring.
Solution Approach 2:
The system introduces mobile device detection as an intermediary factor to determine whether an alert should be generated. By detecting the presence and movement status of mobile devices (presumably belonging to attending adults) near the vehicle, the system mediates between detecting child presence and generating alerts, suppressing alerts when an adult is nearby and active.
2Ease of operation
If alerts are suppressed to prevent false alarms, then user experience is improved, but real emergency warnings may be missed
Solution Approach 1:
The system dynamically adjusts alert generation based on multiple changing parameters: child presence status, determined age range, mobile device proximity, and mobile device movement status. This dynamic parameter-based decision-making ensures alerts are suppressed only when appropriate (adult nearby and active) while maintaining reliability for genuine emergencies.
Solution Approach 2:
The system uses feedback from mobile device detection (proximity and movement status) to continuously adjust alert generation decisions. This feedback mechanism ensures that alerts are suppressed only when positive indicators of adult attendance are present, while maintaining alert capability when feedback suggests the child may be unattended, thus preserving emergency warning reliability.
3Reliability
If mobile device detection is added to determine attendance status, then false alarm reduction is achieved, but device complexity increases
Solution Approach 1:
The system leverages the mobile device's existing capabilities (location services and motion sensors) for multiple functions: determining proximity to the vehicle, assessing adult attendance status, and triggering alert suppression. By making the mobile device multi-functional, the system achieves false alarm reduction without proportionally increasing overall system complexity.
Solution Approach 2:
The system uses the mobile device's own sensors (GPS, accelerometers, gyroscopes) to self-determine its proximity and movement status without requiring additional dedicated sensors in the vehicle. This self-service approach allows the system to gather necessary data using the mobile device's inherent capabilities, reducing the complexity burden on the vehicle's detection system.
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 alarms by ensuring alerts are only generated when a child is unattended, enhancing user experience while maintaining alert functionality during critical situations.
Implementation Method 1
The radar device may be configured to operate when a vehicle is turned off, detect a presence of a person in the vehicle
Data Source
AI summary
A system comprising a radar device and a mobile device. The radar device may be configured to operate when a vehicle is turned off, detect a presence of a person in the vehicle, determine an age range of the person detected and generate an alert signal in response to a presence signal and determining that the age range of the person detected corresponds to a child. The mobile device may be configured to communicate the presence signal to the radar device and determine a movement of the mobile device. The radar device may determine a distance of the mobile device from the vehicle in response to the presence signal. The radar device may suppress the alert signal when the distance of the mobile device is within a predetermined range of the vehicle and the mobile device is moving.