Electronic Key System for Accurate Vehicle ID Verification
Here’s PatSnap Eureka !
Summary
Problems
Existing electronic key systems face challenges in accurately determining the location of an electronic key relative to a vehicle's exterior and interior due to the difficulty in forming communication areas that conform to the vehicle's shape, leading to inefficiencies in ID verification and operation of in-vehicle devices.
Innovation solutions
The system employs multiple transmission devices within the vehicle to create overlapping communication areas of different sizes for exterior and interior verification, allowing the vehicle to determine the electronic key's location by analyzing response signals and adjusting signal intensity thresholds, thereby enabling accurate ID verification with a reduced number of transmitters.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a transmitter transmits requests to both interior and exterior areas using a single communication area, then the number of transmitters is reduced, but the location determination accuracy deteriorates
Why choose this principle:
The single communication area is segmented into two distinct verification areas: an exterior verification area and an interior verification area. Each area has different signal intensity thresholds, allowing the system to determine whether the electronic key is inside or outside the vehicle with high accuracy while using only two transmitters.
Principle concept:
If communication areas are formed to match the vehicle shape, then location determination accuracy is improved, but the device complexity increases
Why choose this principle:
Different signal intensity thresholds are applied to different spatial regions: a first threshold for the exterior verification area and a second threshold for the interior verification area. This local differentiation allows accurate location determination adapted to the vehicle's shape without requiring additional transmitters.
Application Domain
Data Source
AI summary:
The system employs multiple transmission devices within the vehicle to create overlapping communication areas of different sizes for exterior and interior verification, allowing the vehicle to determine the electronic key's location by analyzing response signals and adjusting signal intensity thresholds, thereby enabling accurate ID verification with a reduced number of transmitters.
Abstract
An electronic key system (3) includes transmission devices (22, 23) arranged in a vehicle (2). Each transmission device (22, 23) forms a communication area (Ado;Adi, Apo;Api) and transmits an inquiry signal (Swk). Each transmission device (22, 23) forms an exterior verification communication area (Ado; Apo) when determining whether or not the electronic key (1) is located outside the vehicle (2) and an interior verification communication area (Adi; Api) when determining whether or not the electronic key (1) is located inside the vehicle (2). An area setting unit (21 b) sets the exterior verification communication area (Ado; Apo) with a size that differs from that of the interior verification communication area (Adi; Api).