Filling System Diagnostic Mode Using Substitute Flow Values
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Solution Overview
Problem
Filling systems face disruptions and inaccuracies during diagnostics, as they often require stopping the filling process or compromising filling precision, due to the need for zero flow conditions for certain diagnostics and the inability to perform others during operation.
Innovation Solution
The method allows for diagnostic mode to be conducted during filling operations by using substitute flow or fill level values, which are adjusted based on real-time or stored data, enabling continuous operation and immediate error rectification by communicating deviations between control and evaluation units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If diagnostics are performed during filling operation, then productivity is maintained, but measurement precision deteriorates due to flow interference
Solution Approach 1:
The system segments the measurement task by using multiple flowmeters at different filling points. When one flowmeter requires diagnostics, other flowmeters continue to provide accurate flow measurements for their respective filling points, allowing the system to maintain overall productivity while performing maintenance on individual sensors.
Solution Approach 2:
The control system acts as an intermediary by receiving data from multiple flowmeters and using substitute values from operational flowmeters to compensate for diagnostics at one location. The control system coordinates the diagnostic mode activation and substitute value generation to maintain continuous monitoring without sacrificing measurement precision at other points.
2Reliability
If zero point monitoring is performed, then reliability is improved, but productivity decreases due to process interruption
Solution Approach 1:
The system divides the monitoring function across multiple filling points, allowing zero point monitoring to be performed at one location while other locations continue normal filling operations. This segmentation enables reliable diagnostics without complete system shutdown.
Solution Approach 2:
The system performs preliminary actions by establishing substitute flow value generation mechanisms before diagnostics are needed. When a flowmeter requires zero point monitoring, pre-configured substitute values from other flowmeters are immediately activated, maintaining productivity while enabling reliable diagnostics.
3Productivity
If substitute flow values are used during diagnostics, then productivity is maintained, but manufacturing precision deteriorates
Solution Approach 1:
The system dynamically adjusts by switching between actual flowmeter data and substitute flow values based on operational needs. During diagnostics, substitute values are used temporarily, but the system maintains the ability to return to precise actual measurements, allowing productivity maintenance without permanent loss of manufacturing precision.
Solution Approach 2:
The system changes the parameter source from actual flow measurements to substitute flow values during diagnostic periods. This parameter change enables continuous operation while the underlying measurement capability remains intact and can be restored after diagnostics complete.
Data Source
AI summary
A method for operating a filling system with first and second filling points is disclosed. The first filling point has a first unit for controlling and monitoring the filling of the first filling point. The second filling point has a second unit for controlling and monitoring the filling of the second filling point. The first and second units are connected via a communication channel. In an operating state, the first filling point switches to diagnostic mode. The first unit reports the diagnostic start to the second unit. The first unit outputs substitute flow rate or level values. The second unit transmits a deviation message to the first unit in the event of a deviation of the current flow or level value from an expected value. After receipt of the deviation message, the first unit interrupts diagnostic mode and switches to normal operation or outputs corrected substitute flow or level values.