Vehicle Child Check Authentication Against Switch Tampering

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Solution Overview

Problem

Existing child checking devices in vehicles are vulnerable to illegal modifications of the switch mechanism, which compromises their effectiveness in ensuring a driver confirms the presence of a child after the engine is turned off.

Innovation Solution

The child checking apparatus employs a communication-type software switch device and a seed key encryption algorithm to authenticate the switch operation, using a processor to verify the PIN code matches the vehicle's identification number, and issue warnings if there is a mismatch.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a physical switch device is used for child checking, then the operation is simple and direct, but the system is vulnerable to illegal modification and arbitrary switching

Engineering Contradiction:

Improveoperation simplicityVSAvoidsystem integrity

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces the physical mechanical switch with a communication-type software switch device that transmits authentication request messages and receives authentication response messages. This substitution eliminates the vulnerability of physical switches to illegal modification while maintaining the functional capability of confirming child presence through a standardized communication protocol.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the operational parameter from physical switch position to cryptographic authentication exchange. The switch device now operates by transmitting authentication request messages containing encrypted data and verifying authentication response messages, transforming the confirmation mechanism from a simple physical state change to a secure cryptographic verification process.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If authentication encryption is implemented, then security against illegal modification is improved, but the device complexity increases

Engineering Contradiction:

ImprovesecurityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent integrates the authentication encryption functionality into the existing switch device, making it multi-functional. The switch device now performs both its original confirmation function and cryptographic authentication, eliminating the need for separate security hardware and reducing overall system complexity while maintaining enhanced security.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces authentication messages as intermediaries between the switch device and the control system. These messages contain encrypted authentication data that mediates the verification process, allowing secure communication without requiring complex direct authentication mechanisms between components.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12620301B2Apparatus for checking a child in vehicle and a method thereof

Publication Date: 2026.05.05 HYUNDAI MOTOR CO LTD

AI summary

The present disclosure relates to a child checking apparatus and a method therefor. A child checking apparatus includes a processor configured to transmit an authentication response message corresponding to an authentication request message if the authentication request message is received from a switch device after a vehicle is turned off and to determine whether the switch device operates within a predetermined time period to issue a warning. The child checking apparatus also includes a storage configured to store data driven by the processor, an algorithm, and a PIN code for encryption.