Liquid Mixing System Self-Verification via Integrated Flowmeters
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Solution Overview
Problem
Existing systems for testing the accuracy and functionality of foam addition systems in fire engines require a separate examination process, which is inefficient.
Innovation Solution
A liquid mixing system that integrates a method for mixing water with additives, including a network of lines, flowmeters, and a control device to measure and store flow values, allowing for continuous observation and precise control of the admixing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate examination process is used to test the accuracy and functionality of the foam addition system, then the testing can be performed, but the process becomes inefficient and time-consuming
Solution Approach 1:
The patent merges the examination process with the normal operating process by integrating measurement devices into the existing foam addition system. The foam metering device and water flow meter are incorporated into the regular foam generation workflow, allowing accuracy testing to occur during normal operation rather than requiring a separate test mode.
Solution Approach 2:
The system performs self-testing through integrated measurement devices that continuously monitor foam concentrate flow and water flow during normal operation. The control unit automatically processes measurements and determines accuracy, enabling the system to self-verify its performance without external intervention or separate examination procedures.
2Measurement precision
If measurement devices are integrated into the normal operation, then continuous monitoring is achieved, but the device complexity increases
Solution Approach 1:
The measurement devices serve multiple functions: the foam metering device measures both operational flow and test flow, the water flow meter monitors both service water and test water, and the control unit handles both normal control and accuracy determination. This multi-functionality reduces the need for separate dedicated measurement equipment.
Solution Approach 2:
The control unit receives measurement data from the integrated flow meters and automatically processes this feedback to determine accuracy. This feedback mechanism enables continuous monitoring and self-verification without requiring complex external measurement systems, as the system uses its own operational data for accuracy assessment.
Data Source
AI summary
A method as well as a liquid mixing system for providing a liquid mixture of water with at least one additive. The liquid mixing system comprises a first water reservoir, a first additive reservoir, a mixing unit, a conveying device and a line network. At least one first measurement value of the flow of the first additive conveyed to a mixing device is determined by an additive flowmeter. The total stream of the liquid mixture conveyed by the conveying device is measured by a liquid mixture flowmeter. The determined measurement values are transmitted to a control device, and from there passed on to a data storage device where they are stored.