Vehicle Antenna Topology Optimization for Occupant Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle antenna topologies face challenges in accurately determining the seating position of occupants within a vehicle, leading to inefficiencies in communication signal strength and reliability.
Innovation Solution
A method and system that utilize signal strength data from communication devices to predict seating positions, compare these predictions to actual positions, and adjust antenna positions based on differential data, employing machine learning models and multiple antennas arranged in the vehicle's ceiling to optimize antenna topology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional antenna topologies are used in vehicles, then the system structure is simple, but the seating position detection accuracy is poor
Solution Approach 1:
The patent divides the vehicle cabin into multiple occupancy zones (driver zone, front passenger zone, rear passenger zones) and assigns specific antennas to detect signals from each zone. This segmentation allows the system to accurately determine seating positions by analyzing signal strength from specific directional antennas, resolving the contradiction between detection accuracy and system complexity.
Solution Approach 2:
The patent employs different antenna types (dipole antennas, patch antennas) at different locations in the vehicle ceiling, with each antenna optimized for detecting signals from specific seating zones. This local optimization of antenna characteristics improves seating position detection accuracy while maintaining a manageable system structure.
2Reliability
If antenna positions are fixed during manufacturing, then the manufacturing process is simple, but the communication signal strength varies with occupant position
Solution Approach 1:
The patent pre-calculates and stores optimal antenna positions and occupancy zone boundaries in a lookup table during the design phase. During vehicle operation, the system simply queries this pre-computed data based on detected seating positions, eliminating the need for real-time complex calculations and ensuring reliable communication signal strength without complicating the manufacturing process.
3Area of stationary object
If multiple antennas are added to improve coverage, then the signal coverage improves, but the system complexity and cost increase
Solution Approach 1:
The patent designs a multi-functional antenna system where each antenna serves multiple purposes: detecting occupancy in its primary zone, providing backup coverage for adjacent zones, and enabling both presence detection and communication functions. This multi-functionality allows comprehensive signal coverage with a reduced number of antennas, balancing coverage area and system complexity.
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 approach enhances the accuracy of seating position detection, improves communication signal strength, and optimizes antenna placement for better coverage and reliability.
Implementation Method 1
an antenna of the antenna topology that receives a signal from a communication device
Data Source
AI summary
Systems and methods are disclosed for optimizing an antenna topology to detect a seating position of a vehicle occupant. Methods and systems for determining a target position for an antenna of the antenna topology are also disclosed. Determining the target position may be based on a comparison of a predicted seating position to a true seating position.