Vehicle Access Control Using Ear Acoustic User Verification

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Solution Overview

Problem

Existing vehicle control systems using hearable devices for verification between users and vehicles are vulnerable to third-party manipulation within a wider communication range, potentially leading to unauthorized vehicle operations.

Innovation Solution

A vehicle control system that includes a terminal device with an ear mounting unit, a user identification unit based on acoustic reflected sound, a first verification unit for wireless communication with the vehicle, and an operation instruction unit to execute predetermined vehicle operations. The system also includes a second verification unit in the vehicle to confirm matching with the terminal device and an operation controller to execute instructions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a general communication standard with a wider communication area (about 10 meters) is used for wireless communication between the terminal device and the vehicle, then the ease of operation is improved, but the reliability deteriorates due to the likelihood of unauthorized operations by third parties

Engineering Contradiction:
Improveease of operationVSAvoidreliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent introduces an intermediary verification mechanism using acoustic reflected sound from the user's earhole as a mediator between the terminal device and vehicle. The verification unit in the terminal device and the verification unit in the vehicle both verify the user's identity through this acoustic signature, creating a trusted intermediary layer that prevents third-party unauthorized access while maintaining the convenient wireless communication range.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If wireless communication verification is performed without acoustic earhole verification, then the device complexity is reduced, but the reliability deteriorates due to vulnerability to third-party manipulation

Engineering Contradiction:
Improvedevice complexityVSAvoidreliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent merges two verification methods into a unified system: wireless communication verification (for convenience and range) and acoustic earhole verification (for security). The terminal device's verification unit combines both verification types to authenticate the user, while the vehicle's verification unit independently verifies the same acoustic signature. This merging allows the system to maintain low complexity in each individual component while achieving high overall reliability through the combination of multiple verification layers.

Inventive Principle:
Principle #5Merging (Combining)

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 significantly reduces the likelihood of third-party operation of vehicles by ensuring that only the verified user can initiate vehicle operations through voice instructions, even within a wider communication range.

Implementation Method 1

a user identification unit configured to identify the user based on an acoustic reflected sound in an earhole

Methodology Applied
Scientific EffectAcoustic reflected sound: Echo

Data Source

PatentUS12337793B2Vehicle control system
Publication Date: 2025.06.24 TOYOTA JIDOSHA KK
  • US12337793B2 patent drawing
  • US12337793B2 patent drawing
  • US12337793B2 patent drawing

AI summary

A vehicle control system includes a terminal device and a vehicle. The terminal device includes a first verification unit that verifies whether the terminal devices matches the vehicle through wireless communication when the terminal device enters an area in which wireless communication between the terminal device and the vehicle is available, and an operation instruction unit that receives an instruction to execute a predetermined operation of the vehicle from the user and the first verification unit has verified that the terminal device matches the vehicle, and transmits a signal according to the instruction to the vehicle, and the vehicle includes a second verification unit that communicates with the first identification unit and verify whether with the vehicle matches the terminal device, and an operation controller that receives the signal from the operation instruction unit and executes the predetermined operation according to the signal.