RFID Seat Location Tracking for Occupant Restraint Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In self-driving vehicles with removable seats, the movement of seats creates challenges for occupant restraint systems, as existing technologies lack effective methods to identify seat locations, leading to suboptimal deployment of restraints during crashes.
Innovation Solution
The use of near field communication sensors to track seat locations and control occupant restraint systems based on these locations, ensuring correct deployment of airbags and seatbelts by integrating sensors with each seat and a controller that adjusts parameters according to seat position and occupancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If seats are made keyed mechanically to return to a single dedicated location, then seat location identification is ensured, but flexibility for non-traditional seating arrangements is lost
Solution Approach 1:
The patent replaces the mechanical keyed system with an electronic identification system using RFID tags and readers. Each seat has an RFID tag that can be read by readers at different vehicle locations, allowing the system to electronically identify seat locations without physical mechanical constraints, thus maintaining reliability while enabling flexibility.
Solution Approach 2:
The RFID tags are universal and can be read by any reader in the vehicle, allowing seats to be moved to any location. The system accommodates multiple seating configurations (traditional, non-traditional, flexible arrangements) using the same identification technology, making the system adaptable to various vehicle types and configurations.
2Ease of operation
If wireless switches with seatbelt buckles are used, then belt usage detection is enabled, but specific location based data is not provided
Solution Approach 1:
The patent combines the RFID identification system with the existing seatbelt wireless switch system. The RFID tags provide location information while the wireless switches continue to detect belt usage. By merging these two functions, the system gains both location awareness and belt usage detection without compromising either capability.
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 solution enables accurate deployment of occupant restraints based on seat location, providing enhanced safety by ensuring that airbags and seatbelts are activated appropriately, even in flexible seating arrangements, and alerts for non-preferred seat positions or unauthorized seats.
Implementation Method 1
The controller is further configured to operate an occupant restraint system for the first seat using a second set of parameters when the data indicates that the first seat is at a second location in the vehicle
Data Source
AI summary
A method includes sensing when a seat is at a first location in a vehicle, and controlling an occupant restraint system of the vehicle in a first manner based on the seat being at the first location in the vehicle. The method further includes sensing when the seat is at a second location in the vehicle, and controlling the occupant restraint system of the vehicle in a second manner based on the seat being at the second location in the vehicle. A system receives data indicating a location of seats in a vehicle and operates an occupant restraint system for the seats using a first set of parameters when the data indicates that a first seat is at a first location, and operates the occupant restraint system for the first seat using a second set of parameters when the data indicates that the first seat is at a second location.