Solar-Powered Sensor System for Unattended Child Detection
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Solution Overview
Problem
Existing child and pet safety systems in vehicles do not effectively monitor the presence of children or pets left unattended inside locked vehicles, especially during extreme weather conditions, leading to potential injury or death due to heatstroke or suffocation, and lack the ability to perform immediate remedial actions or alert emergency services.
Innovation Solution
A multipurpose sensor system installed in vehicles, powered by solar panels, that includes thermal sensors to detect body heat and temperature, a location sensor, and a wireless communication module to alert owners and emergency services when a child or pet is left unattended, and can activate in-vehicle remedial actions such as rolling down windows or activating air conditioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing seatbelt monitoring systems are used, then driver and passenger seatbelt status can be monitored, but they cannot detect unattended children or pets in locked vehicles
Solution Approach 1:
The sensor system is designed to perform multiple functions: it monitors seatbelt status, detects presence of occupants, identifies unattended children or pets, and triggers alerts. This multi-functional approach resolves the contradiction by expanding monitoring coverage beyond just seatbelt status while maintaining reliable detection capabilities through integrated sensors.
2Measurement precision
If child seat monitoring systems are used, then car seat installation and seatbelt buckle status can be monitored, but they cannot detect unattended children or pets when the vehicle is locked and ignition is off
Solution Approach 1:
The system performs preliminary detection of child or pet presence before the vehicle is locked or ignition is turned off. By continuously monitoring during the occupied phase and maintaining detection capability through the solar-powered sensor unit, the system extends monitoring duration beyond typical system operation limits, enabling detection even when the vehicle is locked and off.
Solution Approach 2:
The solar panel provides self-powered operation to the sensor unit, eliminating dependence on vehicle ignition or battery power. This self-service energy supply enables continuous monitoring duration regardless of vehicle state (locked/unlocked, on/off), resolving the limitation of monitoring duration in existing systems.
3Device complexity
If no alert system is installed, then the vehicle system remains simple, but children or pets may be forgotten in hot cars for longer duration causing injury or death
Solution Approach 1:
The system establishes feedback loops where sensors continuously monitor temperature and presence, and the control unit processes this data to trigger alerts when dangerous conditions are detected. This feedback mechanism provides real-time warning to resolve the contradiction by enabling timely intervention before heat exposure causes harm, while keeping the system architecture relatively simple through modular sensor and control components.
4Reliability
If thermal sensors and alert systems are added, then unattended children and pets can be detected and alerts can be sent, but the device complexity increases
Solution Approach 1:
The patent combines multiple sensor types (thermal sensors for body heat detection, temperature sensors for ambient temperature monitoring) and integrates them with the vehicle's existing electronic control unit and alert systems. This merging approach resolves the contradiction by achieving reliable unattended occupant detection through integrated sensing while managing system complexity through consolidation with existing vehicle electronics.
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 ensures the safety of children and pets by alerting owners and emergency services, preventing prolonged exposure to dangerous temperatures and enabling immediate rescue actions, thereby reducing the risk of injury or death from heatstroke, suffocation, or other hazards.
Implementation Method 1
a solar panel disposed on an exterior surface of the vehicle for providing power to the sensor unit
Implementation Method 2
a thermal sensor for detecting temperature inside the vehicle and body temperature of a child and/or pet in the vehicle
Data Source
AI summary
The present invention relates to a multipurpose sensor system for vehicles to detect unattended children and/or pets in a locked vehicle. The multipurpose sensor system includes a sensor unit having a plurality of sensors disposed inside the vehicle, and solar panels disposed on an exterior surface of the vehicle. The sensors detect the vehicle's interior temperature and a child's and/or pet's body temperature. More specifically, when the temperature inside the vehicle is equal to or greater than a threshold value, an alarm/alert is generated by the sensor system. The alert is transmitted to an electronic device of a driver, parent or caretaker. Further, an alert is also transmitted to an emergency service for rescuing the child and/or pet.