Vehicle Occupancy Alert System Using Multi-Sensor Fusion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle safety systems lack proactive measures to detect and alert owners about children, pets, or vulnerable adults left inside vehicles, relying solely on sensor activation after the vehicle is turned off, which is insufficient for preventing heat-related or other hazards.
Innovation Solution
A mobile safety alert system integrated into vehicles, utilizing sensors to monitor ignition status, occupancy through CO2 levels, weight sensors, and wireless transmission to send alerts to pre-programmed numbers when the vehicle is turned off and occupants are still inside, employing Bluetooth or cellular protocols for communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor activation is used to detect occupants after vehicle is turned off, then the system can detect dangerous conditions, but the alert is provided too late to prevent heat-related hazards
Solution Approach 1:
The system performs preliminary detection of occupants before the vehicle is fully turned off by monitoring sensor data during the ignition transition period. The processor detects when the ignition is switched off while occupants are still present in the vehicle, triggering an alert before dangerous heat conditions develop. This preliminary action resolves the contradiction by providing timely warnings that prevent hazards rather than merely detecting them after the fact.
2Measurement precision
If multiple sensors are used to monitor occupancy and conditions, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The system employs multiple types of sensors (motion sensors, weight sensors, CO2 sensors, temperature sensors) that serve both occupancy detection and environmental monitoring functions. This multi-functionality approach resolves the contradiction by using sensors that provide multiple benefits: they detect occupancy presence while simultaneously monitoring conditions that may indicate dangerous situations, thereby improving detection accuracy without proportionally increasing system complexity.
Solution Approach 2:
The patent combines multiple detection methods (motion detection, weight detection, CO2 level detection, temperature monitoring) into a unified alert system that triggers when any combination indicates an occupied vehicle with dangerous conditions. This merging of functions allows the system to achieve high measurement precision through multiple sensor types while managing complexity through integrated processing and a single alert output mechanism.
3Loss of time
If the system sends proactive alerts before the vehicle is turned off, then response time is improved, but the system may generate false alarms when the driver is still inside
Solution Approach 1:
The system uses feedback from multiple sensors to verify occupancy status before triggering an alert. The processor continuously monitors sensor data and only generates an alert when the ignition is switched off AND occupancy is confirmed through motion sensors, weight sensors, or CO2 level detection. This feedback mechanism resolves the contradiction by ensuring alerts are only sent when both timing conditions (ignition off) and occupancy conditions are met, preventing false alarms while maintaining timely response.
Solution Approach 2:
The system performs preliminary verification of occupancy status using multiple sensor types before issuing an alert. By checking motion sensors, weight sensors, and CO2 levels in advance of the alert trigger, the system ensures that alerts are only generated when occupants are actually present and the ignition has been turned off. This preliminary verification action resolves the contradiction by maintaining alert timing accuracy while preventing false positives.
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 provides proactive alerts to owners, potentially preventing heat-related hazards and ensuring the safety of children, pets, and vulnerable adults by initiating warnings and, if necessary, remote vehicle operations to mitigate dangerous conditions before emergency responders arrive.
Implementation Method 1
one of the plurality of sensors senses level of CO2 gas in the vehicle and determines that a human or a pet is in the vehicle by the level of CO2 gas
Implementation Method 2
individual ones of the sensors are mechanical sensors sensing weight on one or more seats in the vehicle and determines that a human or a pet is in the vehicle by the states of the mechanical sensors
Data Source
AI summary
A safety alert system for a vehicle has a computerized monitoring apparatus storing a pre-programmed telephone number for a specific cellular telephone, a plurality of sensors coupled to the computerized monitoring apparatus, sensing at least on/off status of vehicle ignition system, presence or absence of a person in a driver's seat of the vehicle, and presence of a person or another animal in a location in the vehicle other than the driver's seat, and wireless transmission circuitry adapted to send an alert to a cellular telephone. The computerized monitoring apparatus senses that vehicle ignition is on, a person is in the driver's seat, and there is a person or another animal in a location in the vehicle other than the driver's seat, then senses that the ignition is switched off, then senses that there is no person in the driver's seat, and then sends an alert to the cellular telephone.