Vehicular Eye-Controlled Device Illumination Separation

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Solution Overview

Problem

Existing eye-controlled devices for vehicular use face inaccuracies and failures in detecting eyeball movement due to inadequate illumination, often resulting in incorrect judgment or failure, particularly when the light spot is too close to the pupil or not properly formed.

Innovation Solution

A vehicular eye-controlled device with a separated illumination unit, positioned at least 5 cm away from the photographic unit, uses IR or white LEDs to ensure accurate illumination and prevent deviations, enhancing the accuracy of eyeball movement judgment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the illumination unit is placed close to the photographic unit for compact design, then device complexity is reduced, but the illumination accuracy deteriorates causing light spot shift or absence

Engineering Contradiction:

Improvedevice structureVSAvoideyeball movement detection accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The device is divided into separate functional modules: the illumination unit and the photographic unit are positioned at least 5 cm apart. This segmentation allows each unit to perform its function independently without interference, ensuring that the illumination light properly reflects off the eyeball surface to create a stable light spot for accurate detection.

Inventive Principle:

Principle #1Segmentation

2Use of energy by moving object

If the illumination distance is short to reduce energy consumption, then use of energy is improved, but the illumination quality deteriorates resulting in failed eyeball movement judgment

Engineering Contradiction:

Improveillumination energy consumptionVSAvoideyeball movement judgment reliability

Core Design Contradiction:

Use of energy by moving objectVSReliability

Solution Approach 1:

The patent specifies that the illumination unit and photographic unit should be positioned at least 5 cm apart, which optimizes the illumination parameters. This distance ensures that the light reflects properly from the eyeball surface to create a clear light spot image, thereby maintaining high reliability in eyeball movement detection while managing energy consumption effectively.

Inventive Principle:

Principle #35Parameter changes

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 solution significantly improves the accuracy of eyeball movement detection by ensuring proper illumination, reducing errors and failures associated with conventional devices.

Implementation Method 1

irradiating the eyeballs with an IR LED lamp

Methodology Applied

Scientific EffectLight emission: Light Emitting Diode

Implementation Method 2

a light spot is formed on the eyeball surface by reflection

Methodology Applied

Scientific EffectLight reflection: Reflection

Data Source

PatentUS8699870B2Vehicular eye-controlled device having illumination light source

Publication Date: 2014.04.15 UTECHZONE CO LTD

AI summary

A vehicular eye-controlled device having an illumination light source essentially includes a first body and a second body which are independent and separate. The first body has an electronic component disposed therein and required for operation and a photographic unit exposed therefrom for capturing an image of a driver. The second body is disposed in the vicinity of the first body and includes an illumination unit for providing illumination required for eye-controlled operation. The illumination unit and the photographic unit are separated by a distance of at least 5 cm.