Information notification method and relocation determination device

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Solution Overview

Problem

Existing methods for detecting air conditioner relocation are prone to misdetection, especially when the refrigerant amount is low, leading to insufficient refrigerant circulation and potential compressor damage, due to reliance on refrigerant pressure detection which can result in false negatives or compressor failure.

Innovation Solution

A method that uses network connection state and operation log analysis to determine if a refrigerant recovery operation has been performed, eliminating the need for refrigerant pressure detection by monitoring connection states and operation logs to accurately assess relocation, and sends a prompt for a test operation if relocation is detected.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If refrigerant pressure detection is used to determine relocation, then the system can detect relocation events, but misdetection occurs especially when refrigerant amount is low leading to false negatives and potential compressor damage

Engineering Contradiction:
Improverelocation detection accuracyVSAvoidcompressor safety
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The patent introduces network connection state and operation log information as intermediary indicators to detect relocation events. Instead of directly measuring refrigerant pressure, the system uses the air conditioner's network connectivity status and operational records as proxies to infer whether relocation has occurred, thereby avoiding the pitfalls of direct pressure measurement when refrigerant levels are low.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the mechanical/physical refrigerant pressure detection method with an information-based detection approach using network communication and log analysis. By substituting the physical measurement system with an informational system that monitors network connection states and operation logs, the patent eliminates the misdetection issues inherent in pressure-based methods while maintaining relocation detection capability.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Measurement precision

If refrigerant pressure detection is used, then relocation can be detected, but the system complexity increases due to potential compressor damage risks requiring additional protection mechanisms

Engineering Contradiction:
Improverelocation detection capabilityVSAvoidsystem protection mechanisms
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts the relocation detection function from the refrigerant pressure detection system and implements it separately through network connection state monitoring and operation log analysis. This separation allows the system to detect relocation events without relying on the complex pressure detection and protection mechanisms, thereby reducing overall system complexity while maintaining detection capability.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If network connection state and operation log analysis are used to determine relocation, then misdetection is prevented and compressor safety is ensured, but the method requires additional monitoring components

Engineering Contradiction:
Improverelocation detection accuracyVSAvoidmonitoring system components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent leverages the air conditioner's existing network communication infrastructure and operation logging system, which are already in place for other purposes, to also perform relocation detection. By making these existing components multi-functional, the patent achieves reliable relocation detection without adding significant new hardware, thereby minimizing the increase in system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS10422544B2Information notification method and relocation determination device
Publication Date: 2019.09.24 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
  • US10422544B2 patent drawing
  • US10422544B2 patent drawing
  • US10422544B2 patent drawing

AI summary

An information notification method for use in an information notification system connected to an air conditioner including a refrigerant circuit and an information communication apparatus includes detecting a connection state indicating whether the air conditioner is connected to a network, determining whether the air conditioner performed a refrigerant recovery operation on the refrigerant circuit on the basis of the operation log information that indicates an operation log of the air conditioner and that is received from the air conditioner, determining whether the air conditioner has been relocated on the basis of the detected connection state and the determination as to whether the air conditioner performed the refrigerant recovery operation, and sending, to the information communication apparatus, first information used to prompt for a test operation of the air conditioner if it is determined that the air conditioner has been relocated.