Vehicle Entry Authorization System Preventing False Activation

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Solution Overview

Problem

Vehicles equipped with sensor systems that automatically unlock or open doors when a driver approaches may inadvertently do so when the driver does not intend to enter, leading to potential theft risks and unnecessary battery drain.

Innovation Solution

A vehicle entry authorization system that uses dimensional information of the garage interior, captured by sensors such as cameras and distance measurement devices, to determine if the remote-control device is inside or outside the garage, thereby preventing false activations of vehicle components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the sensor system automatically unlocks or opens doors when a driver approaches, then convenience of operation is improved, but false activation occurs when the driver does not intend to enter

Engineering Contradiction:
Improveautomatic door unlockingVSAvoidfalse activation prevention
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent adds a spatial dimension to the proximity detection by creating a three-dimensional representation of the garage interior using distance measurements from multiple sensors. This dimensional information allows the system to determine whether the driver is inside or outside the garage, providing an additional criterion beyond simple proximity to prevent false activations while maintaining convenient automatic unlocking when appropriate.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Loss of energy

If the vehicle components are activated when the driver is outside the garage, then unnecessary battery drain occurs

Engineering Contradiction:
Improvebattery drainVSAvoidautomatic component activation
Core Design Contradiction:
Loss of energyVSExtent of automation

Solution Approach 1:

The system uses feedback from the sensor array to continuously monitor the driver's location and provide real-time information to the vehicle computer. Based on this feedback, the system intelligently activates or deactivates components such as door locks and lighting, ensuring automatic activation only when the driver is inside the garage and preventing unnecessary energy consumption when the driver is outside.

Inventive Principle:
Principle #23Feedback

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

Prevents unnecessary activation of vehicle components when the driver is outside the garage, conserving battery life and reducing theft risks by accurately determining the location of the remote-control device using a template generated from garage dimensions.

Implementation Method 1

a sensor system that can detect a driver approaching a vehicle and convey the information to a computer in the vehicle

Methodology Applied
Scientific EffectElectromagnetic radiation detection: Electromagnetic Induction

Implementation Method 2

one or more distance measuring devices for obtaining distance information of the walls of the garage with respect to the vehicle

Methodology Applied
Scientific EffectTime of flight measurement: Time of Flight

Data Source

PatentUS11721144B2Eliminating unexpected activation of components of a vehicle when parked in a garage
Publication Date: 2023.08.08 FORD GLOBAL TECH LLC
  • US11721144B2 patent drawing
  • US11721144B2 patent drawing
  • US11721144B2 patent drawing

AI summary

This disclosure is generally directed to systems and methods for eliminating false activation of components of a vehicle when the vehicle is parked in a garage. Example components can be a door lock, a door latch, a door activation servomotor, or a light. In an example method, a vehicle entry authorization system of a vehicle operates a sensor system to obtain dimensional information of an interior portion of the garage. The vehicle entry authorization system may then detect a presence of a mobile device (such as a phone-as-a-key or a vehicle key fob) and determines the location of the mobile device based on the dimensional information. If the mobile device is located outside the garage, the vehicle entry authorization system refrains from activating a component of the vehicle. However, if the mobile device is located inside the garage, the vehicle entry authorization system activates the component.