Buffer Units with ID Reading for Sample Rack Transport Control
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Solution Overview
Problem
Existing automatic analyzers face congestion and inefficiencies in sample rack transport due to sequential processing and re-inspection requirements, leading to wasted time and reduced operational efficiency, especially when multiple devices with different processing capabilities are interconnected.
Innovation Solution
The implementation of buffer units with integrated sample rack identification code reading capabilities allows for prioritization of urgent samples and parallel processing, reducing resetting time and improving system efficiency by temporarily storing racks and determining transport routes based on sample urgency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If racks are transported sequentially from upstream to downstream analyzing units, then the transport route is simple to control, but the transport route becomes congested when there are many samples to be analyzed at the upstream side, causing samples requiring downstream analysis to be delayed
Solution Approach 1:
The patent introduces buffer units at multiple locations along the transport line to segment the continuous transport process into discrete zones. Each buffer unit can independently hold racks, allowing the system to decouple the sequential transport from the analysis processing rate, thereby preventing congestion while maintaining simple control logic.
Solution Approach 2:
Buffer units act as intermediary storage points between upstream and downstream analyzing units. These intermediaries receive racks from upstream transport and release them to downstream units at appropriate times, mediating the flow to prevent both congestion and delays without complex control mechanisms.
2Adaptability or versatility
If a return route is provided for rack transport from downstream to upstream, then racks can be returned to the supply unit, but the transport sequence becomes time-consuming and obstructs the processing of racks supplied from the supply unit
Solution Approach 1:
The patent implements preliminary action by having buffer units pre-positioned at strategic locations along the transport line. When racks need to be returned or redirected, they can be immediately placed into appropriate buffer units rather than waiting for the return route to become available, thereby reducing transport time while maintaining flexibility.
Solution Approach 2:
The system dynamically utilizes buffer units to adapt rack transport directions based on real-time needs. Rather than following a fixed return route, racks can be dynamically redirected to any buffer unit, making the system more flexible and time-efficient.
3Reliability
If samples requiring re-inspection are collectively placed in a standby unit, then re-inspection can be performed, but racks unable to pass through the standby unit cause wasteful waiting time, and the standby unit obstructs the traveling route of racks supplied from the supply unit
Solution Approach 1:
The patent segments the re-inspection process by distributing buffer units throughout the transport line rather than concentrating all re-inspected samples in a single standby unit. This segmentation allows re-inspection to be performed at multiple locations simultaneously, eliminating waiting time and obstructing routes while maintaining reliability.
Solution Approach 2:
Buffer units serve as intermediaries that handle re-inspected racks locally at their positions along the transport line. Instead of collecting all such racks in a central standby unit that blocks the transport route, each buffer unit independently manages its local re-inspection needs, acting as a distributed intermediary system.
4Measurement precision
If sample rack identification code reading is performed at the beginning of processing, then sample identification is accurate, but the resetting time increases significantly when multiple sample racks need to be processed after system stoppage
Solution Approach 1:
The patent performs sample rack identification code reading in advance during normal operation, storing the identification information in the buffer units. When system stoppage occurs and resetting is needed, this preliminary information is already available, eliminating the need to re-read all identification codes and significantly reducing resetting time while maintaining accuracy.
Solution Approach 2:
The system creates a copy or record of the sample rack identification information and stores it in the buffer units. This copied information can be retrieved during resetting without physically re-reading the original identification codes, thereby reducing resetting time while preserving identification accuracy.
Data Source
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AI summary
In a sample-processing system that includes one or more function modules and one or more buffer units each combined as a pair with one of the function modules, in case of device stoppage due to failure, since a number of sample racks are held in the buffers, resetting involves a huge amount of time for storage of the racks. In addition, if the system configuration includes a plurality of buffer units, the resetting time increases with the number of buffer units. Sample rack ID reading means is provided in each buffer unit and during resetting, IDs of the sample racks in the buffer unit are read in the buffer unit. The buffer unit then uses the read information to make an inquiry to a control unit as to transport destinations of each sample rack. After this, sample processing based on transport destination instructions from the control unit is restarted using the buffer unit as a restarting position.