Air-Conditioning System Remote Operation Restriction During Test Mode

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Solution Overview

Problem

Existing air-conditioning systems face challenges in maintenance ease due to remote operation changes during test operations, making it difficult for service personnel to properly check or repair the apparatus.

Innovation Solution

An air-conditioning system with an indoor unit, outdoor unit, adapter, and centralized management device that communicates via an external network, featuring a test operation switch to initiate a preset operation mode, and operation restricting means to prevent remote changes during maintenance checks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If remote operation is allowed during test operation mode, then user convenience is improved, but maintenance reliability deteriorates

Engineering Contradiction:
Improveremote operation convenienceVSAvoidmaintenance reliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system applies preliminary anti-action by detecting the test operation mode status before allowing remote operations. When test mode is detected, the system proactively restricts remote operation commands to prevent unintended changes during maintenance checks, thereby preserving maintenance reliability while allowing normal remote operation during other modes

Inventive Principle:
Principle #9Preliminary anti-action

2Ease of repair

If test operation mode is implemented, then maintenance capability is improved, but operational stability deteriorates

Engineering Contradiction:
Improvemaintenance capabilityVSAvoidoperational stability
Core Design Contradiction:
Ease of repairVSStability of the object's composition

Solution Approach 1:

The system implements dynamics by creating a dynamic control state that changes based on operational mode. The remote operation restriction is not fixed but dynamically activated only during test operation mode while remaining inactive during normal operation modes, thus maintaining operational stability when test mode is not active while enabling maintenance capability when needed

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP2853824B1Air-conditioning system
Publication Date: 2017.12.20 MITSUBISHI ELECTRIC CORP
  • EP2853824B1 patent drawingFigure 1
  • EP2853824B1 patent drawingFigure 2(a)~2(b)
  • EP2853824B1 patent drawingFigure 3

AI summary

[Object] It is an object to provide an air-conditioning system that suppresses degradation in ease of maintenance. [Solution] A control unit includes mode control means for, when a test operation switch is turned on, transmitting information indicating that a test operation mode is performed to a centralized management device via an adapter and an external network. The centralized management device includes operation restricting means for, when the information indicating that the test operation mode is performed is received, restricting an operation on an operation terminal to prevent an operation of an air-conditioning apparatus from being changed via the operation terminal.