Abnormality diagnostic system, air conditioner, and air conditioning system
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Solution Overview
Problem
Conventional air conditioners lack the ability to accurately identify the cause of abnormalities, making it difficult for service personnel to diagnose and address issues promptly, leading to potential operational disruptions.
Innovation Solution
An abnormality diagnostic system is integrated into the air conditioner, comprising a processing unit to acquire and analyze operation data, a storage unit to log abnormality and symptom information, and an output unit to chronologically display this information, enabling the identification of causes and reducing the need for external communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional air conditioners detect operation data and estimate abnormalities, then abnormality detection capability is improved, but the ability to accurately specify abnormality causes deteriorates
Solution Approach 1:
The system performs preliminary actions by detecting and storing abnormality symptoms before actual abnormalities occur. The storage unit records symptom information including occurrence timing, allowing the system to analyze precursor indicators and accurately specify abnormality causes by examining the sequence of symptoms leading up to failures.
Solution Approach 2:
The system introduces symptom information as an intermediary element between operation data and abnormality causes. By detecting and storing intermediate symptom states (such as unusual operation patterns or parameter deviations) before complete failures, the system creates a diagnostic bridge that enables more accurate cause specification.
2Loss of information
If service personnel check air conditioner state after abnormality occurs, then abnormality information is obtained, but time consumption increases and prompt treatment becomes difficult
Solution Approach 1:
The system performs preliminary diagnostic work by continuously detecting and storing both symptom information and abnormality information with occurrence timing in the storage unit. This preliminary data collection eliminates the need for time-consuming post-abnormality investigations, as all diagnostic information is already recorded and ready for immediate retrieval.
Solution Approach 2:
The air conditioner performs self-diagnosis by automatically detecting, storing, and managing its own operational data and abnormality information. The system serves itself by maintaining a complete historical record of symptoms and abnormalities, eliminating the need for external service personnel to conduct lengthy diagnostic procedures.
3Measurement precision
If the system stores and outputs abnormality and symptom information chronologically, then abnormality cause specification accuracy is improved, but device complexity increases
Solution Approach 1:
The storage unit is designed with multi-functionality, serving both as a simple data repository and as a chronological event recorder. By integrating timing information storage with abnormality and symptom data in a single unified structure, the system achieves precise cause specification without requiring separate complex timing analysis devices.
Data Source
AI summary
An abnormality diagnostic system includes a processor that acquires operation data of an air conditioner and determines occurrence of abnormality in the air conditioner and occurrence of an abnormality symptom in the air conditioner, a storage that stores abnormality information including a content of the abnormality and information on an occurred time of the abnormality and symptom information including a content of the abnormality symptom and information on an occurred time of the abnormality symptom, and an output interface that outputs the stored abnormality information and the stored symptom information.