Vehicle Occupant Detection Fusion for Passenger-Object Distinction
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Solution Overview
Problem
Conventional vehicle detection systems struggle to accurately determine the presence and type of passengers, especially when objects like boxes or safety seats are placed on the seats, leading to erroneous results.
Innovation Solution
A multiple detection system that combines contact-type and contactless-type detection modules, utilizing pressure, sonic, and optical detection technologies, with an operation processor that adjusts detection results based on environmental status and actuation distribution to provide accurate passenger detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a weight detector is used to determine passenger presence, then the system can detect weight-based information, but it cannot distinguish between passengers and objects like boxes or safety seats, leading to erroneous detection results
Solution Approach 1:
The patent combines multiple detection modules (contact-type weight detector, contactless-type detector, environmental status detector, and actuation distribution detector) into an integrated detection system. This merging allows the system to cross-validate information from different sources, enabling accurate distinction between passengers and objects by analyzing patterns across multiple detection channels rather than relying on weight alone.
Solution Approach 2:
The detection system is designed with multi-functional detection modules that can perform various detection tasks. The contactless-type detector and environmental status detector provide additional detection capabilities beyond simple weight measurement, allowing the system to adapt to different detection scenarios and accurately identify passengers versus objects through multiple detection functions.
2Measurement precision
If multiple detection modules are integrated to improve detection accuracy, then passenger detection precision increases, but the system complexity increases
Solution Approach 1:
The detection system is segmented into distinct functional modules: contact-type detection module, contactless-type detection module, environmental status detection module, and actuation distribution detection module. Each module has a specific function, and the operation processor coordinates them independently. This segmentation allows for easier implementation, maintenance, and troubleshooting while achieving high detection accuracy through coordinated operation of specialized modules.
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 achieves accurate detection of passenger presence, size, and type by integrating multiple detection technologies and adjusting results dynamically, enhancing passenger safety and comfort by enabling appropriate vehicle functions.
Implementation Method 1
the sonic detection module determines the passenger feature via phase difference between an outputted sonic signal and a received sonic signal
Implementation Method 2
the pressure detection module detect pressure applied to the multiple detection system via capacitance material, resistance material or piezoelectric material
Data Source
AI summary
A multiple detection system is applied to a vehicle and includes a contact-type detection module adapted to generate a contact-type detection datum, a contactless-type detection module adapted to generate a contactless-type detection datum, and an operation processor electrically connected with the contact-type detection module and the contactless-type detection module in a wire manner or in a wireless manner. The operation processor sets at least one of the contact-type detection datum and the contactless-type detection datum according to an environmental status of the vehicle to be a main detection result of the multiple detection system, and further sets the other detection datum to be an auxiliary detection result of the multiple detection system, for acquiring a passenger feature inside the vehicle.