Vehicle Control System Remote Start Door Authentication

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Solution Overview

Problem

Existing remote engine starting technologies inconvenience users by requiring engine restart and disabling in-vehicle electrical equipment, while also risking unauthorized vehicle access due to incomplete security measures.

Innovation Solution

A vehicle control system that starts the engine in response to a wireless signal, keeps it running upon door opening, and enables electrical equipment functions only after authentication with a wireless key, preventing unauthorized access and enhancing user convenience.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the engine is stopped when the user unlocks or opens a door after remote starting, then security against unauthorized vehicle use is improved, but the user must restart the engine when getting in the vehicle which reduces convenience

Engineering Contradiction:
Improvesecurity against unauthorized vehicle useVSAvoidconvenience of engine operation
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The engine control system dynamically adjusts its state based on door opening status. When the driver's door is opened, the system transitions from a stopped state to a running state automatically, eliminating the need for manual restart while maintaining security through controlled engine availability

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system monitors door opening status as feedback and uses this information to control engine operation. The door switch signal triggers the engine control unit to determine whether to start or stop the engine, creating a closed-loop control system that responds to user actions

Inventive Principle:
Principle #23Feedback

2Reliability

If functions of in-vehicle electrical equipment are disabled after remote engine start until the vehicle becomes ready to run, then security against unauthorized use is improved, but the user cannot use electrical equipment functions which reduces convenience

Engineering Contradiction:
Improvesecurity against unauthorized vehicle useVSAvoidconvenience of electrical equipment use
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system applies different control states to different electrical equipment based on their relationship to driving functions. Non-driving related equipment (audio, climate control) is enabled immediately upon door opening, while driving-related equipment remains controlled until the vehicle is ready to run, providing localized quality control

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The electrical equipment is segmented into two categories: non-driving system equipment and driving system equipment. Each category is controlled independently with different access conditions, allowing users to access non-critical functions immediately while maintaining security on critical driving functions

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS8712601B2Vehicle control system
Publication Date: 2014.04.29 FUJITSU TEN LTD
  • US8712601B2 patent drawing
  • US8712601B2 patent drawing
  • US8712601B2 patent drawing

AI summary

A starting apparatus starts an engine of a vehicle in response to a wireless signal transmitted from a remote control and keeps the engine running when a door of the vehicle is opened after the engine of the vehicle has been started. Moreover, a function controller included in the starting apparatus disables a function of a powered window apparatus and a sunroof apparatus of the vehicle in response to start of the engine of the vehicle and enables the functions of the powered window apparatus and the sunroof apparatus when a door of the vehicle is opened after the engine of the vehicle has been started.