Radio Wave Seat Occupancy Detection for Safety Mechanisms
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Solution Overview
Problem
Existing vehicle safety mechanisms rely on pressure detection systems that may not accurately determine the presence and type of occupants, leading to potential safety issues and unnecessary alerts.
Innovation Solution
A carrier system utilizing radio wave detection technology to emit and receive waves, determining the occupation state and type of occupants by analyzing reflected waves, and activating safety mechanisms accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a pressure detection system is used to determine seat occupancy, then the safety mechanism can be activated, but the detection accuracy is insufficient and cannot reliably determine occupant type
Solution Approach 1:
The patent replaces the mechanical pressure detection system with a radio wave-based detection system. The radio wave detection device emits waves that penetrate seats and reflect off occupants, allowing detection of both occupancy and occupant type (adult, child, empty) through wave reflection characteristics without mechanical contact.
Solution Approach 2:
The patent introduces radio waves as an intermediary medium between the detection device and the occupant. The radio waves serve as a mediator that can penetrate the seat and interact with the occupant, carrying information about occupancy status and occupant type back to the detection device through reflection patterns.
2Reliability
If pressure sensors are installed in seats to detect occupancy, then safety alerts can be triggered, but false alerts occur and safety reliability is reduced
Solution Approach 1:
The patent replaces the unreliable mechanical pressure sensor system with a radio wave detection system that provides more reliable occupancy detection. The radio wave system can distinguish between different occupancy states (empty seat, adult occupant, child occupant) with higher reliability, reducing false safety alerts.
Solution Approach 2:
The patent changes the detection parameter from mechanical pressure to radio wave reflection characteristics. By measuring the reflection strength and patterns of radio waves rather than pressure forces, the system achieves more reliable and accurate occupancy detection across different scenarios.
3Measurement precision
If contactless radio wave detection is used to determine occupancy and occupant type, then detection accuracy and safety reliability are improved, but the device complexity increases
Solution Approach 1:
The patent designs the radio wave detection device to perform multiple functions: detecting seat occupancy, determining occupant type (adult, child, empty), and providing this information to the safety mechanism. This multi-functionality consolidates what would otherwise require multiple separate detection systems into a single integrated device.
Solution Approach 2:
The radio waves serve as a universal intermediary that can detect various occupancy states through their reflection characteristics. The same radio wave detection mechanism handles different detection scenarios (empty seat detection, adult detection, child detection) without requiring separate specialized sensors for each case.
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
This method provides accurate, contactless detection of seat occupancy and occupant type, reducing unnecessary alerts and ensuring enhanced safety by activating appropriate safety features, such as airbag deployment and seatbelt reminders.
Implementation Method 1
emitting a detection wave towards at least one seat of the carrier by a radio wave detection device, receiving a reflected wave reflected in response to the detection wave
Data Source
AI summary
A carrier system includes at least one seat and a radio wave detection device. The radio wave detection device is configured to emit a detection wave towards at least one seat of the carrier. A reflected wave reflected in response to the detection wave is received by the radio wave detection device. A position of an occupied seat and a type of an occupant on the occupied seat are determined in response to the received reflected wave. A safety mechanism is activated in response to the position of the occupied seat and the type of the occupants.