Laboratory Middleware Dynamic Load Limit Adjustment
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Solution Overview
Problem
Analytical laboratories face issues with overloading and underutilization of laboratory instruments due to deviations in performance from assumed maximum instrument capacity, leading to inefficient sample processing and potential delays in urgent sample analysis.
Innovation Solution
A computer-implemented method where laboratory middleware dynamically adjusts the load limit of each instrument based on its effective flow rate, monitored through test order queries, to prevent overloading and underutilization by dispatching samples at rates matching the instrument's capacity, and implements load balancing and masking to manage overall laboratory load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the load limit for each laboratory instrument is set based on maximum instrument capacity, then the instrument throughput is maximized, but the instrument may become overloaded when performance deviates from assumed capacity
Solution Approach 1:
The load limit for each laboratory instrument is made dynamic rather than static. The system continuously monitors the effective flow rate of each instrument and adjusts the load limit accordingly in real-time. When an instrument's performance deviates from its maximum capacity, the load limit automatically decreases to prevent overloading. Conversely, when the instrument operates at or above expected performance, the load limit increases to maximize throughput.
Solution Approach 2:
The system implements a feedback mechanism where the laboratory middleware continuously monitors the effective flow rate of each instrument by analyzing test order queries. This feedback information is used to dynamically adjust the load limits. The feedback loop ensures that the system responds to actual instrument performance rather than relying on predetermined maximum capacities, thereby preventing both overloading and underutilization.
2Productivity
If the load limit is increased to handle higher sample inflow, then the processing capacity is improved, but the instrument may become overloaded leading to delays
Solution Approach 1:
The load limit dynamically adapts to the actual processing capacity of each instrument. When sample inflow increases, the system monitors whether instruments can keep up with the dispatch rate. If an instrument falls behind, its load limit is decreased to prevent backlog accumulation and delays. This dynamic adjustment ensures that the system maintains high productivity without sacrificing timely sample turnaround.
Solution Approach 2:
The feedback mechanism tracks the effective flow rate versus the dispatch rate for each instrument. When the effective flow rate drops below the dispatch rate, indicating the instrument is falling behind, the system responds by decreasing the load limit. This feedback-driven adjustment prevents instrument overload and ensures samples are processed within acceptable turnaround times even when overall sample inflow is high.
3Reliability
If the load limit is decreased to prevent overloading, then the reliability of instrument operation is improved, but the instrument utilization becomes suboptimal
Solution Approach 1:
Rather than using a fixed conservative load limit, the system dynamically adjusts the load limit based on real-time performance data. When an instrument operates reliably at or above its expected capacity, the load limit increases to improve utilization. When performance degradation is detected, the load limit decreases to maintain reliable operation. This dynamic approach eliminates the need to choose between over-conservative and over-aggressive fixed limits.
Solution Approach 2:
The feedback mechanism continuously monitors whether instruments are meeting their effective flow rate expectations. When instruments consistently meet or exceed performance targets, the system increases load limits to maximize utilization. When performance slips below thresholds, load limits are decreased to maintain reliable operation. This feedback-driven dynamic adjustment ensures both reliability and optimal utilization are achieved simultaneously.
4Device complexity
If static load limits are used for all instruments, then the system complexity is reduced, but the system cannot adapt to performance deviations of individual instruments
Solution Approach 1:
The load management system is segmented at the individual instrument level rather than applying a uniform static limit to all instruments. Each instrument has its own dynamically adjusted load limit based on its specific performance characteristics and real-time effective flow rate. This segmentation allows the system to adapt to performance deviations of individual instruments without requiring complex centralized control of the entire system.
Solution Approach 2:
Each instrument effectively manages its own load through the dynamic adjustment mechanism. The laboratory middleware monitors each instrument's performance and automatically adjusts its load limit without manual intervention or complex centralized decision-making. This self-service approach allows individual instruments to adapt to their own performance variations while maintaining overall system efficiency, reducing the complexity of centralized control.
Data Source
AI summary
A method of operating an analytical laboratory is presented. The method comprises the steps of: setting a load limit for each laboratory instrument at maximum instrument capacity; dispatching biological samples to laboratory instrument(s) at a dispatch rate not greater than the instrument load limit; each laboratory instrument sending test order queries to the laboratory middleware upon identifying a biological sample; in response to the test order queries transmitting test orders to the laboratory instruments corresponding to the biological samples; the laboratory middleware monitoring a query rate of the plurality of laboratory instruments in order to determine an effective flow rate corresponding to each laboratory instrument; decreasing the load limit of a first laboratory instrument if its effective flow rate is lower than the dispatch rate; increasing the load limit for the first laboratory instrument if its effective flow rate is greater than or equal to the dispatch rate.