Specimen Distribution Control for Analyzer Maintenance Balancing

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Solution Overview

Problem

The frequent maintenance of components in automatic analyzers, such as light source lamps and reaction cells, leads to decreased analysis processing efficiency and a burden on users due to the need to stop the analyzers during maintenance.

Innovation Solution

An automatic analysis system with a conveyance line and a computer that prioritizes samples to be conveyed to analyzers based on the usage time of components, preferentially directing samples to analyzers with components nearing maintenance needs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If maintenance is performed regularly on components such as light source lamps and reaction cells, then component reliability is maintained, but analyzer stop frequency increases and analysis processing efficiency decreases

Engineering Contradiction:
Improvecomponent reliabilityVSAvoidanalysis processing efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary tracking and prediction of component usage times, proactively identifying when maintenance should be scheduled. By monitoring accumulated usage time of components like light source lamps and reaction cells, the system predicts maintenance needs before they occur, allowing planned maintenance during low-demand periods rather than reactive maintenance that causes interruptions.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts sample distribution strategies based on real-time component usage data. When a component approaches its maintenance threshold, the system automatically redistributes samples to other analyzers with available capacity, creating a dynamic maintenance scheduling system that adapts to varying workloads and component states to minimize disruption.

Inventive Principle:
Principle #15Dynamics

2Reliability

If maintenance is performed on components, then component functionality is maintained, but user burden increases due to frequent analyzer stops

Engineering Contradiction:
Improvecomponent functionalityVSAvoiduser burden
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system implements self-service maintenance scheduling by automatically monitoring component usage times, predicting maintenance needs, and autonomously redistributing samples without requiring user intervention. The system manages its own maintenance calendar and workload balancing, freeing users from manual maintenance coordination and reducing operational burden.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system continuously monitors component usage data and provides feedback to automatically adjust maintenance scheduling and sample distribution. By tracking accumulated usage time and comparing it against predefined thresholds, the system receives real-time feedback on component status and automatically responds by redistributing samples or scheduling maintenance during optimal times.

Inventive Principle:
Principle #23Feedback

3Measurement precision

If components are replaced or cleaned, then analysis accuracy is maintained, but analysis processing efficiency decreases due to downtime

Engineering Contradiction:
Improveanalysis accuracyVSAvoidanalysis processing efficiency
Core Design Contradiction:
Measurement precisionVSProductivity

Solution Approach 1:

The system performs preliminary identification of components approaching maintenance thresholds and proactively schedules maintenance during periods of low sample flow or redirects samples to other analyzers. This preliminary action allows maintenance to be performed preventively rather than reactively, maintaining accuracy while minimizing the impact on overall processing efficiency.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system segments the analyzer workforce into multiple units with independent component sets, allowing maintenance on one analyzer without stopping the entire system. By dividing the workload across multiple analyzers, the system can perform maintenance on individual components while other analyzers continue processing samples, thereby maintaining overall processing efficiency.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP4303588B1Automatic analysis system and specimen distribution method
Publication Date: 2025.12.17 HITACHI HIGH TECH CORP
  • EP4303588B1 patent drawingFigure 1
  • EP4303588B1 patent drawingFigure 2
  • EP4303588B1 patent drawingFigure 3

AI summary

An automatic analysis system includes: a plurality of automatic analyzers; a conveyance line connected to the plurality of automatic analyzers; and a computer configured to control the conveyance line to distribute a sample to the plurality of automatic analyzers. Each of the plurality of automatic analyzers includes a first component that is constantly used and a second component that is intermittently used. The computer is configured to compare a usage time of the first component of each automatic analyzer with a set time, select, when the usage time of the first component of any one of the plurality of automatic analyzers exceeds the set time, the automatic analyzer in which the usage time of the first component exceeds the set time as a prioritized device, and control the conveyance line such that a sample used for analysis in the second component is conveyed to the prioritized device in preference to another automatic analyzer.