Indoor Unit Proximity Detection for Concealed Air Conditioning

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Solution Overview

Problem

Existing air-conditioning systems with concealed indoor units face challenges in user operation due to difficulty in visually identifying the closest unit, especially when the indoor unit's position changes frequently, requiring repetitive initial setting adjustments.

Innovation Solution

An air-conditioning system with wireless communication units in indoor units and a mobile terminal that detects radio wave intensities to notify and control operable units, allowing easy operation of the closest unit even in dynamic environments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If concealed type packaged indoor units are used, then the aesthetic appearance is improved, but the ease of operation deteriorates because it is hard to visually find the indoor unit close to the user

Engineering Contradiction:
Improveaesthetic appearanceVSAvoidease of operation
Core Design Contradiction:
ShapeVSEase of operation

Solution Approach 1:

The patent introduces a centralized controller with a display screen as an intermediary device. This controller displays a floor plan with images of indoor units superimposed on it, serving as a mediator between the user and the physically hidden indoor units. The user can visually locate the desired indoor unit through the display rather than searching for the physical unit itself.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent creates a visual copy or representation of the indoor units by displaying their images on the centralized controller's screen. Instead of interacting with the physical concealed units directly, users interact with their graphical representations on the display, making location and operation easier while maintaining the aesthetic benefits of concealed installation.

Inventive Principle:
Principle #26Copying

2Adaptability or versatility

If the position of indoor units is changed frequently, then the adaptability is improved, but the loss of time increases due to repetitive initial setting adjustments

Engineering Contradiction:
ImproveadaptabilityVSAvoidloss of time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The system dynamically adapts to changes in indoor unit positions through automatic detection mechanisms. When an indoor unit is moved, the system automatically detects its new location and updates the floor plan display accordingly, eliminating the need for manual re-registration. This dynamic adaptation maintains accuracy without requiring user intervention during position changes.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system implements feedback mechanisms where the centralized controller continuously monitors and detects the positions of indoor units. This feedback loop allows the system to automatically update its internal map and display information, ensuring that the user interface always reflects the current physical arrangement without requiring manual reconfiguration.

Inventive Principle:
Principle #23Feedback

3Loss of information

If images of indoor units are superimposed on the floor plan on the screen, then the information display is improved, but the ease of operation deteriorates because it is still hard for the user to recognize the indoor unit close to the user

Engineering Contradiction:
Improveinformation displayVSAvoidease of operation
Core Design Contradiction:
Loss of informationVSEase of operation

Solution Approach 1:

The patent employs color coding and visual differentiation on the display screen to make indoor units more distinguishable. By using different colors or visual indicators for different types or statuses of indoor units, the system enhances the user's ability to quickly identify and locate the desired unit among multiple options on the floor plan display.

Inventive Principle:
Principle #32Color 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

Enables effortless operation of the nearest indoor unit by detecting and notifying the user of units with high radio wave intensity, improving user convenience and reducing the need for frequent initial setting adjustments.

Implementation Method 1

a plurality of indoor units 2 each including a wireless communication unit 3 that emits radio waves

Methodology Applied
Scientific EffectRadio wave emission: Electromagnetic Induction

Implementation Method 2

The mobile terminal unit 6 detects radio waves emitted by the wireless communication units 3

Methodology Applied
Scientific EffectRadio wave detection: Electromagnetic Induction

Data Source

PatentEP3860138B1Air conditioning system
Publication Date: 2023.12.20 MITSUBISHI ELECTRIC CORP
  • EP3860138B1 patent drawingFigure 1
  • EP3860138B1 patent drawingFigure 2
  • EP3860138B1 patent drawingFigure 3

AI summary

An air-conditioning system includes: a plurality of indoor units including respective wireless communication units each of which emits radio waves; and a mobile terminal unit configured to wirelessly communicate with each of the wireless communication units. The mobile terminal unit detects the radio waves emitted by the wireless communication units, and makes a notification indicating a presence of one or ones of the indoor units that are determined operable based on radio wave intensities of the detected radio waves.