Coordinated Carousel Conveyors for Lower-Complexity Gel Card Testing
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Solution Overview
Problem
Existing automated systems for blood transfusion testing require complex robotics to manage gel cards, leading to elaborate and expensive systems that are slow and inefficient.
Innovation Solution
A system comprising a plurality of concentric circular carousel conveyors, each with independently controlled segments, allows for coordinated movement and alignment of items between conveyors, enabling efficient processing without the need for complex robotics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If complex robotics are used to move gel cards and perform testing operations, then the system can handle automated immunohematology testing, but the device complexity and cost increase significantly
Solution Approach 1:
The system divides the automated testing process into distinct modular stations (reagent station, sample station, testing station, centrifuge station) that operate independently. Each station performs a specific function, eliminating the need for a single complex robotic system to handle all operations. The gel card moves sequentially through these simplified modular stations.
Solution Approach 2:
The gel card serves multiple functions throughout the system: it is both the transportation medium for samples and reagents, and the testing platform itself. The same gel card structure is used for holding samples, reagents, and performing the actual immunohematology testing, reducing the need for separate specialized components.
2Extent of automation
If complex robotics with multiple moving parts are deployed to handle gel cards, then automated operations can be achieved, but the system speed decreases due to coordination overhead
Solution Approach 1:
The system uses a dynamic conveyor belt mechanism that can independently control the movement of each gel card through the different stations. The conveyor speed and positioning are dynamically adjusted based on the testing protocol requirements, allowing rapid sequential processing without the coordination delays of complex robotic arms.
Solution Approach 2:
The conveyor belt system enables continuous movement and processing of gel cards through all stations without stopping or repositioning overhead. Multiple gel cards can be processed in sequence or parallel, maintaining continuous productive action throughout the system rather than having idle coordination periods.
3Manufacturing precision
If elaborate robotic systems are used for precise gel card manipulation, then testing accuracy can be maintained, but the manufacturing cost increases
Solution Approach 1:
The gel card design incorporates self-aligning features and standardized interfaces that work passively with the conveyor system. The gel card's own structure facilitates its movement and positioning through the stations without requiring active correction or complex manipulation mechanisms, maintaining precision through design rather than expensive control systems.
Solution Approach 2:
The system uses controlled environmental parameters (temperature, centrifugal force) at each station to ensure accurate testing results. The centrifuge station applies precise controlled forces to separate blood components, and temperature-controlled stations maintain optimal conditions for immunohematology reactions, achieving scientific precision through parameter control rather than mechanical complexity.
Data Source
AI summary
Coordinated conveyors in an automated system. A system comprises a plurality of conveyors, which each comprise a plurality of segments, and one or more stations. An instruction is received to perform an operation that requires at least one station to process at least a first item held by a first segment of a first conveyor and a second item held by a second segment of a second conveyor. In response to the instruction, one or both of the first and second conveyors are moved, such that the first segment and the second segment are aligned at the station. After alignment, one or more instruments of the station process the first item and the second item.