Urine Analyzer Cross-Check Controller for Fresh Data Comparison
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Solution Overview
Problem
Conventional urine analyzers do not automatically perform cross-checks between urine qualitative and urinary sediment measurement results, leading to increased user burden and ineffective evaluations when retesting is required, especially when past measurement results are outdated due to sample deterioration.
Innovation Solution
A urine analyzer with a storage section and controller that performs cross-checks between qualitative and sediment measurement results, regardless of the order in which they are obtained, and maintains a history of combined measurement results for appropriate comparison and evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional urine analyzers only perform cross-checks when qualitative measurement is followed by sediment measurement, then the measurement process is simple, but user burden increases and evaluation effectiveness decreases when retesting is required
Solution Approach 1:
The system dynamically adjusts the cross-check execution based on the measurement sequence and timing. The controller determines whether to perform cross-checks by evaluating temporal relationships between measurements rather than following a fixed sequence, making the system adaptable to different operational scenarios including retesting
Solution Approach 2:
The invention changes the parameter of measurement timing from a fixed sequence requirement to a flexible time-based criterion. By introducing a time threshold parameter, the system can perform cross-checks regardless of measurement order as long as the time difference is within the acceptable range, resolving the contradiction between operational simplicity and evaluation effectiveness
2Reliability
If past measurement results are combined with current results for evaluation, then comprehensive evaluation is achieved, but sample deterioration leads to inaccurate comparisons
Solution Approach 1:
The system performs preliminary filtering of measurement results based on time criteria before combining them for evaluation. By pre-determining which past results are still valid (within the time threshold), the system avoids combining deteriorated samples with current results, ensuring evaluation accuracy while maintaining efficiency
Solution Approach 2:
The system uses feedback from the time difference calculation to control the cross-check process. When the time difference exceeds the threshold, the system automatically determines that cross-check is inappropriate, providing feedback-based control that prevents inaccurate comparisons while allowing comprehensive evaluation within valid time frames
3Reliability
If cross-checks are performed regardless of measurement order, then evaluation effectiveness improves, but system complexity increases
Solution Approach 1:
The system simplifies the complexity by changing from sequence-based control to time-based control. The single parameter of time difference threshold provides a clear, objective criterion for determining cross-check applicability, making the system both flexible in handling different measurement orders and simple in its decision logic
Data Source
AI summary
A urine analyzer includes a controller configured to perform, when a qualitative measurement result of a sample is obtained and a sediment measurement result of the sample has been stored in a storage section, a cross-check of the obtained qualitative measurement result and the stored sediment measurement result, and to perform, when a sediment measurement result of a sample is obtained and a qualitative measurement result of the sample has been stored in the storage section, a cross-check of the obtained sediment measurement result and the stored qualitative measurement result.