Surface-Scatter Turbidimeter With Adjustable Optical Path
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Solution Overview
Problem
Conventional turbidimeters face challenges in precisely measuring turbidity due to fixed positional relations between the light source, measurement tank, and light receiving element, making it difficult to adjust optical path lengths and account for the liquid's state.
Innovation Solution
A surface scatter turbidimeter with a change mechanism that adjusts the relative position between the light irradiation point on the liquid surface and the light receiving element, allowing for precise turbidity calculation using scattered light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fixed positional relations are used between light source, measurement tank, and light receiving element, then device structure is simple, but optical path length cannot be adjusted and measurement precision deteriorates
Solution Approach 1:
The patent applies the dynamics principle by making the light receiving element movable along the optical axis direction. This allows the optical path length to be dynamically adjusted according to the liquid's turbidity state, resolving the contradiction between maintaining simple device structure and achieving adjustable measurement parameters for improved precision.
Solution Approach 2:
The patent changes the optical path length parameter by moving the light receiving element to different positions. This enables adaptation to different turbidity levels in the liquid, improving measurement precision without requiring complete redesign of the device structure.
2Adaptability or versatility
If optical path length is fixed, then device structure is simple, but adaptability to different liquid states deteriorates
Solution Approach 1:
By making the light receiving element movable, the system gains adaptability to different liquid turbidity states. The optical path length can be adjusted dynamically, allowing the same device structure to handle varying measurement requirements without becoming overly complex.
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
Improves the precision of turbidity measurement by optimizing the optical path length based on the liquid's turbidity, enhancing linearity and accuracy across varying turbidity levels.
Implementation Method 1
light emitted from a light source is reflected by suspended matter in a liquid to be measured stored in a measurement tank, scattered light is thereby generated, the scattered light is received by a light receiving element
Data Source
AI summary
A measurement tank stores a liquid to be measured. A light source emits light to a liquid surface of the liquid to be measured stored in the measurement tank. A light receiving element receives scattered light generated at the measurement tank from the light from the light source. A change mechanism changes a relative position in relation to a component horizontal to the liquid surface in a direction of travel of the light, the relative position being between: an irradiation position where the light from the light source is emitted to on the liquid surface; and the light receiving element. A turbidity value calculation unit calculates a turbidity value of the liquid to be measured, on the basis of the scattered light received by the light receiving element.