Projector Oil Detection for Secure Wall Mounting

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Solution Overview

Problem

Existing projector systems fail to effectively determine if a projector attached to a ceiling or wall is securely fastened, particularly when the attachment fixture or housing material deteriorates due to oil adhesion, leading to potential drops and difficulty in user confirmation.

Innovation Solution

A control method and system for projectors that include an oil detecting section to assess air for oil presence, a determining section to evaluate the need for attachment confirmation based on the detection, and a display section to show a confirmation image urging user verification, ensuring secure attachment even with deteriorated materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the attachment fixture or housing is formed of resin material, then the projector can be manufactured with ease and reduced cost, but the material deteriorates due to oil adhesion causing attachment failure

Engineering Contradiction:

Improveease of manufactureVSAvoidreliability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The system performs preliminary detection of oil in the air and proactively warns users about potential attachment deterioration before actual failure occurs. The control unit detects oil concentration and displays warning messages to users, enabling them to take preventive action (rechecking attachment) before the resin material actually fails due to oil adhesion.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the projector outputs a warning message when attachment is not detected, then attachment security can be monitored, but users find it difficult to execute confirmation when the warning is not specific about deterioration causes

Engineering Contradiction:

ImprovereliabilityVSAvoidease of operation

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system provides feedback to users by detecting oil in the air and displaying specific warning messages that indicate both the attachment status and the cause (oil adhesion). This feedback loop enables users to understand the specific deterioration cause and take appropriate action, making the confirmation process easier and more effective.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The system uses different display colors to indicate different attachment statuses and warning levels. When oil is detected or attachment deterioration is suspected, the display changes color or shows specific warning messages, making it easy for users to identify and respond to attachment issues without confusion.

Inventive Principle:

Principle #32Color changes

3Device complexity

If the projector does not detect oil in the air, then the system operates without additional complexity, but it cannot proactively warn users about potential attachment deterioration

Engineering Contradiction:

Improvedevice complexityVSAvoidreliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The system replaces complex mechanical monitoring of attachment integrity with a simpler chemical detection approach. Instead of using complex mechanical sensors to detect physical degradation of resin materials, the system uses an oil detection device to detect the presence of oil in the air, which is the root cause of resin deterioration. This substitution maintains low device complexity while significantly improving reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 effectively prompts users to verify the projector's attachment, reducing the risk of drops and ensuring secure mounting by displaying a confirmation image when necessary, even with materials prone to oil-induced deterioration.

Implementation Method 1

an oil detecting section to assess air for oil presence

Methodology Applied

Scientific EffectOil detection:

Data Source

PatentUS11550209B2Control method for projector, projector, and projector system

Publication Date: 2023.01.10 SEIKO EPSON CORP

AI summary

A control method for a projector attachable to a wall via an attachment fixture includes determining whether the projector is attached to the wall, detecting oil included in air, determining, when determining that the projector is attached to the wall, based on a detection result of the oil included in the air, whether confirmation concerning the attachment of the projector is necessary, and displaying, when determining that the confirmation concerning the attachment of the projector is necessary, a confirmation image for urging the confirmation concerning the attachment of the projector on a display surface.