Vehicle Occupant Reminder Using Engine Start-Stop Detection
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Solution Overview
Problem
Children and pets are at risk of hypothermia and injury due to being left unattended in vehicles, where rapid temperature increases can overwhelm their ability to regulate temperature, often resulting in fatalities or severe consequences due to forgetful drivers.
Innovation Solution
A vehicular safety device with modules for detecting engine start and stop, providing reminders through voice and audio interfaces, and a battery-powered system to alert drivers of the presence of children or pets in the vehicle after the engine is turned off, ensuring they do not forget to remove them.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reminder system is implemented to prevent children or pets from being left in vehicles, then safety and reliability are improved, but device complexity increases
Solution Approach 1:
The device is divided into separate functional modules: a power detection module to sense engine status, a memory module to store child/pet presence information, and a notification module with speaker and indicator light. This segmentation allows each component to perform its specific function reliably while keeping individual components simple and manageable.
Solution Approach 2:
The system automatically detects engine start/stop events and retrieves stored information from memory to generate notifications without requiring manual intervention. The power detection module continuously monitors engine status and triggers appropriate alerts, enabling the system to serve itself and reduce complexity compared to manual reminder systems.
2Reliability
If continuous monitoring and reminder systems are used, then reliability is improved, but energy consumption increases
Solution Approach 1:
Instead of continuous monitoring, the system uses periodic action by detecting specific engine events (start and stop) to trigger notifications. The power detection module activates the notification sequence only at these discrete moments, allowing the device to remain in a low-power state between events while maintaining reliability for the critical reminder function.
3Ease of manufacture
If simple and inexpensive reminder devices are used, then ease of manufacture and accessibility are improved, but functionality and reliability may be compromised
Solution Approach 1:
The device employs inexpensive, readily available components such as a basic power detection module, standard memory chip, and simple notification elements (speaker and LED indicator). While individual components are simple and easy to manufacture, their combination creates a reliable system that effectively prevents the harmful outcome of leaving children or pets in vehicles.
Data Source
AI summary
A vehicular safety device for monitoring the presence of a child or pet in a motorized vehicle. The device interfaces with the vehicle's power receptacle for detection of the on/off state of the vehicle. The operator is prompted to inform the device of the presence of the child or pet upon start of the engine of the vehicle through an auditory interface. When the engine of the vehicle is shut down, the device provides an audible reminder to the operator that a child or pet is present in the vehicle.