Reagent Bottle Transport Calibration for Stable Analyzer Loading

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Solution Overview

Problem

Existing automatic analyzers face challenges with reagent bottle loading and unloading mechanisms due to variations in component fabrication, leading to unstable positional relationships and increased operator workload for adjustments, which can result in operational failures.

Innovation Solution

An automatic analyzer equipped with a reagent storage unit, reagent transport unit, reference members, sensors, and a controller that adjusts transport parameters based on detected positions using sensors like reflection sensors, cameras, or laser displacement meters to stabilize the reagent bottle mounting process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If automatic reagent bottle loading and unloading mechanism is implemented, then operator workload is reduced and analysis interruption is minimized, but positional displacement occurs due to fabrication variations and aging, causing mounting errors and operational failures

Engineering Contradiction:
Improveautomatic reagent bottle loading and unloadingVSAvoidpositional stability of reagent bottle mounting
Core Design Contradiction:
Extent of automationVSReliability

Solution Approach 1:

The patent employs sensors (optical sensors, encoders, or vision systems) to detect the actual position of reagent bottles and mechanical components during loading and unloading operations. This position information is fed back to the control unit, which automatically adjusts transport parameters to compensate for deviations, ensuring accurate mounting despite fabrication variations and aging effects

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The control unit dynamically modifies transport parameters (such as transport distance, speed, or positioning coordinates) based on detected position deviations. By changing these parameters in real-time, the system adapts to positional variations caused by manufacturing tolerances and component aging, maintaining reliable reagent bottle mounting

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If manual adjustment of mechanism positions is performed to compensate for fabrication variations, then mounting accuracy is improved, but operator workload increases

Engineering Contradiction:
Improvemounting accuracy of reagent bottleVSAvoidoperator workload for adjustment
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The system performs self-adjustment through automated detection and correction mechanisms. Sensors automatically detect position deviations, and the control unit autonomously calculates and applies correction parameters without requiring operator intervention. This eliminates manual adjustment work while maintaining high mounting accuracy

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical adjustment operations with automated sensing and control systems. Instead of operators physically adjusting component positions, the system uses optical sensors, encoders, or vision systems to detect positions and electronically controls motorized components to achieve accurate mounting, substituting human labor with automated systems

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

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

This solution reduces operator workloads and prevents analyzer suspensions by ensuring stable reagent bottle mounting and unloading, minimizing reagent degradation and operational interruptions.

Implementation Method 1

a reflection sensor comprising a light source and a detector that detects light emitted from the light source and reflected by the reference member

Methodology Applied
Scientific EffectReflection: Reflection

Implementation Method 2

a laser displacement meter measuring a distance to the reference member

Methodology Applied
Scientific EffectLaser: Laser

Data Source

PatentEP4215921B1Automatic analysis device
Publication Date: 2026.02.11 HITACHI HIGH TECH CORP
  • EP4215921B1 patent drawingFigure 1
  • EP4215921B1 patent drawingFigure 2
  • EP4215921B1 patent drawingFigure 3~4

AI summary

Provided is an automatic analyzer, into or out of which a reagent bottle is automatically carried, capable of reducing a burden of an operator than in the past and preventing suspension of the analyzer. The automatic analyzer includes ribs 300 in a reagent disc 9 or ribs 400 in a reagent loading unit 103, a reflection sensor 200 provided in a reagent transport mechanism 101 to detect the ribs 300 or 400, and a controller 21 that adjusts a transport parameter of the reagent transport mechanism 101 using positions of the ribs 300 or 400 detected by the reflection sensor 200.