Vehicle Passenger Detection System Using Door and Sensor Data
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Solution Overview
Problem
Drivers often unintentionally leave passengers, such as children or infants, behind in a vehicle when parking, due to lack of confirmation upon exiting the vehicle.
Innovation Solution
A vehicle system that generates a primary warning message based on door opening/closing information and a secondary warning message using human detection sensors, including audible and visual alerts, to confirm passenger exit, with options for maintaining or canceling the secondary warning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple warning messages and detection methods are implemented, then passenger safety is improved, but device complexity increases
Solution Approach 1:
The warning system is segmented into two distinct levels: primary warning based on door switch information and secondary warning based on human detection sensor information. This segmentation allows the system to provide comprehensive safety coverage while maintaining clear functional boundaries and manageable complexity in each subsystem.
Solution Approach 2:
The controller integrates multiple functions including door switch monitoring, human detection sensor processing, primary warning generation, and secondary warning generation into a single control unit. This multi-functionality reduces the need for separate dedicated devices for each function, thereby managing overall system complexity while maintaining comprehensive passenger safety monitoring.
2Measurement precision
If human detection sensors are added for secondary confirmation, then detection precision is improved, but device complexity increases
Solution Approach 1:
The human detection sensor acts as an intermediary detection layer between the basic door switch system and the final warning output. It provides additional verification of passenger presence without requiring direct integration of multiple complex sensor types, thereby improving detection precision while managing system complexity through a single dedicated sensor type.
Solution Approach 2:
The system performs preliminary detection using door switch information before activating the more resource-intensive human detection sensor. This preliminary action filter ensures that the human detection sensor is only activated when initially suspected that a passenger may be left behind, improving detection precision while reducing overall system complexity by limiting sensor activation to necessary moments.
3Reliability
If both audible and visual warnings are generated, then warning effectiveness is improved, but energy consumption increases
Solution Approach 1:
The warning system dynamically adjusts its output based on the detection results and environmental conditions. The controller selectively activates audible warnings, visual warnings, or both based on the situation, providing maximum warning effectiveness while optimizing energy consumption by avoiding unnecessary simultaneous activation of all warning components.
Solution Approach 2:
The system employs periodic warning signals rather than continuous activation. The audible and visual warnings are generated in periodic cycles when passenger presence is detected, rather than remaining constantly active. This periodic action maintains high warning effectiveness while significantly reducing overall energy consumption compared to continuous operation.
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
Effectively prevents passengers from being unintentionally left behind by ensuring drivers confirm the presence or absence of passengers through multiple warnings, enhancing safety by ensuring all occupants exit the vehicle safely.
Implementation Method 1
The motion sensor may include at least one of an ultrasonic sensor, an infrared sensor, a vision sensor, a radar sensor, and a LiDAR (Light Detection And Ranging) sensor.
Implementation Method 2
The visual warning may include blinking an emergency lamp of the vehicle.
Implementation Method 3
The audible warning may include honking a horn of the vehicle.
Data Source
AI summary
A vehicle and a method for controlling the vehicle include generating a warning message for passenger confirmation such that a driver of the vehicle confirms whether at least one passenger safely alights from the vehicle by recognizing the warning message. The method for controlling the vehicle includes: primarily confirming a presence or absence of a passenger having not yet exited the vehicle on a basis of opening/closing information of doors; generating a primary warning message for passenger confirmation on a basis of a result of the primary confirmation regarding the presence or absence of the passenger; secondarily confirming the presence or absence of the passenger having not yet exited the vehicle using a human detection sensor; and generating a secondary warning message for passenger confirmation on a basis of a result of the secondary confirmation.