Liquid Chromatographic Pump Failure Detection
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Solution Overview
Problem
Existing liquid chromatographic systems face challenges in accurately detecting liquid sending failures due to varying system configurations and connection structures of liquid sending pumps, leading to degraded accuracy in failure detection.
Innovation Solution
A liquid chromatographic system that includes a system configuration specifier, a condition holder, a condition determiner, and a liquid sending failure detector, which specifies the number and connection structure of liquid sending pumps and uses preset conditions to determine the appropriate detection criteria for each configuration, enabling accurate detection of liquid sending failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single detection condition is used for all liquid sending pumps, then the detection method is simple, but the detection accuracy degrades due to varying system configurations
Solution Approach 1:
The patent segments the detection conditions based on system configuration types. Different detection thresholds and parameters are applied according to whether the system has one or multiple liquid sending pumps and their connection structures. This segmentation allows accurate detection for each configuration type while maintaining a unified detection framework.
Solution Approach 2:
The detection system dynamically adapts its parameters based on the detected system configuration. The control unit automatically selects appropriate detection conditions from multiple preset options, making the detection method flexible and adaptable to different system setups rather than using fixed static parameters.
2Measurement precision
If multiple detection conditions are prepared for different system configurations, then the detection accuracy improves, but the system complexity increases
Solution Approach 1:
The patent creates a universal detection system that handles multiple system configurations through a single integrated control unit. This control unit automatically identifies the system configuration type and applies the appropriate detection conditions, eliminating the need for separate detection systems for each configuration and reducing overall system complexity.
Solution Approach 2:
The system changes detection parameters dynamically based on the identified configuration type. Rather than maintaining separate physical detection systems, the control unit adjusts detection thresholds, monitoring frequencies, and evaluation criteria according to the system configuration, achieving accurate detection across all configurations through parameter adaptation.
3Productivity
If liquid sending failure detection is not implemented, then the system operation continues without interruption, but analysis data quality deteriorates due to undetected failures
Solution Approach 1:
The patent implements a feedback mechanism where the control unit continuously monitors liquid sending parameters and compares them against configuration-specific thresholds. When anomalies are detected, the system provides feedback to stop analysis operations, preventing generation of low-quality data while maintaining productivity through automatic recovery or alert mechanisms.
Solution Approach 2:
The system performs preliminary detection of liquid sending failures before they significantly impact analysis quality. By monitoring parameters in advance and detecting early signs of pump failure, the system can take preventive actions such as stopping the analysis or alerting the operator, thereby maintaining data quality without interrupting legitimate analysis operations.
Data Source
AI summary
Liquid sent by a liquid sending pump flows through an analysis flow path. A sample is injected into the analysis flow path. A separation column is provided in the analysis flow path. A sample injected in the separation column is separated into components, and sample components obtained by separation are detected by a detector. The number of liquid sending pumps and a connection structure of the liquid sending pumps connected to the analysis flow path are specified by a system configuration specifier as a system configuration. A condition for detecting a liquid sending failure in a liquid sending pump that is preset for each type of system configuration is held by a condition holder. A condition corresponding to a system configuration is determined from conditions held by the condition holder. A liquid sending failure in a liquid sending pump is detected with use of the determined condition.