Optical Agitator Position Sensing for Sample Flow Detection
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Solution Overview
Problem
Automatic measuring systems require costly float switches or turbine/thermal flow meters for sample flow detection, which occupy extra space and increase system complexity.
Innovation Solution
A measuring system with a variable-position agitating element and an optical measurement arrangement that determines the element's position based on a measurement signal, allowing flow rate detection without the need for additional hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If float switches or turbine/thermal flow meters are used for sample flow detection, then flow rate detection is achieved, but system cost and device complexity increase
Solution Approach 1:
The patent combines the flow detection function with the existing optical measurement system by using the agitating element's position detection capability. The optical measurement arrangement that was originally designed for measuring fluid properties is now dual-purpose: it measures both fluid parameters and agitating element position, which indicates flow rate. This eliminates the need for separate flow meters and reduces system complexity.
Solution Approach 2:
The optical measurement arrangement is made multi-functional by enabling it to perform both its original measurement function and the new flow detection function. The same optical components and measurement path are used to detect both fluid properties and agitating element position, making the system more universal and reducing the number of dedicated components needed.
2Reliability
If float switches or turbine/thermal flow meters are used for sample flow detection, then flow rate detection is achieved, but extra space is required within the detection system
Solution Approach 1:
The flow detection capability is merged into the existing optical measurement arrangement, eliminating the need for separate flow meter components that would occupy additional space. The agitating element itself serves as the flow indicator, and its position is detected by the existing optical path, thus achieving flow detection without adding extra spatial requirements.
3Reliability
If float switches or turbine/thermal flow meters are used for sample flow detection, then flow rate detection is achieved, but costly additional hardware is required
Solution Approach 1:
The agitating element serves dual purposes: it both agitates the fluid for measurement and indicates flow rate through its position. The existing optical measurement system, designed for fluid analysis, now also detects the agitating element's position to determine flow rate. This self-service approach eliminates the need for costly dedicated flow detection hardware.
Solution Approach 2:
The optical measurement arrangement is enhanced to perform multiple functions: original fluid property measurement and new flow rate detection via agitating element position monitoring. This multi-functionality reduces hardware costs by eliminating the need for separate, costly flow meter components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient flow rate detection and optical analysis without the use of costly float switches or flow meters, optimizing space utilization and reducing system complexity.
Implementation Method 1
an optical measurement arrangement with an optical measurement path for determining the position of the agitating element, wherein the measuring system is configured to determine the position of the agitating element based on a measurement signal from the optical measurement arrangement
Data Source
AI summary
A measuring system includes a measuring chamber for receiving a sample fluid; an agitating element for agitating the sample fluid and having a variable position between first and second positions depending on a flow rate of the sample fluid; and an optical measurement arrangement with an optical measurement path for determining the position of the agitating element; wherein the measuring system determines the position of the agitating element based on a measurement signal from the optical measurement arrangement, the measurement signal being indicative of the agitating element being inside or outside of the optical measurement path.