Vehicle Cabin Hazard Detection Using Sensor Fusion
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Solution Overview
Problem
There is a growing concern of fatalities and permanent damage due to hyperthermia and hypothermia in vehicle occupants left unattended, as existing solutions do not adequately monitor and alert for potentially hazardous temperature conditions within vehicle cabins.
Innovation Solution
A system combining sensors such as ignition switch, driver presence, cabin occupant, temperature, and vehicle movement sensors with an alarm and wireless messaging system to detect and alert for hazardous temperatures, activating alarms or sending distress messages when an occupant is left unattended.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sensors and systems are integrated to monitor temperature and detect occupants, then detection reliability is improved, but device complexity increases
Solution Approach 1:
The system divides the monitoring function into separate sensor modules (temperature sensor, occupant sensor, door sensor, motion sensor) that independently detect specific parameters. Each sensor handles a specific detection task, improving overall reliability through functional segmentation while allowing modular integration.
Solution Approach 2:
Multiple sensors and detection systems are integrated into a unified control system that processes data from all sources simultaneously. The controller combines information from temperature sensors, occupant sensors, door sensors, and motion sensors to make comprehensive safety decisions, achieving reliable multi-parameter monitoring through system merging.
2Loss of time
If the alarm is activated immediately after driver exits, then response time is improved, but false alarms increase due to来不及 verify temperature hazard
Solution Approach 1:
The system performs preliminary detection of temperature hazards and occupant presence before the driver fully exits the vehicle. The controller continuously monitors cabin temperature and compares it against pre-set hazard thresholds, preparing the alarm system in advance so that when the driver exits, the alarm can be immediately activated if conditions are already hazardous, achieving both fast response and accurate detection.
Solution Approach 2:
The system continuously feedbacks temperature data, occupant detection status, and door sensor information to the controller, which adjusts alarm activation decisions based on real-time conditions. This feedback mechanism ensures the alarm is activated at the optimal moment - when temperature hazard is confirmed and driver exit is detected - balancing rapid response with accurate hazard verification.
Data Source
AI summary
A vehicle cabin hazard detection and management system includes an engine state sensor, a driver presence sensor, a cabin passenger sensor, a door latch sensor for each passenger door, a vehicle movement sensor, a cabin temperature sensor, an alarm device, a wireless messaging system, and a controller. The controller receives signals from the sensors, evaluates whether a hazardous condition is imminent for a cabin occupant, and activates an alarm and/or takes other action to counter the hazard.