Foreign Particle Detection in Liquid via Spectral Absorption
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Solution Overview
Problem
Current water quality monitoring systems face challenges in accurately detecting and classifying pollution types due to contamination of optical components, reliance on meteorological conditions, and limited ability to quantify impurities, leading to inaccurate and unreliable measurements.
Innovation Solution
A method and system that use a light flux with varied pulse frequency, intensity, and wavelength to assess liquid pollution by comparing incoming and outgoing light fluxes, allowing for the identification of specific types of pollutants based on absorption properties, and employing a computer-aided device to process data and communicate results to a control center.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional optical components are used for water quality monitoring, then the device structure is simple, but the optical components get contaminated leading to inaccurate measurements
Solution Approach 1:
The patent introduces an intermediary liquid medium that the light beam passes through before reaching the optical components. This intermediary layer prevents direct contact between the light beam and contaminated water, allowing optical components to remain clean while still enabling pollution detection through changes in light absorption properties of the intermediary liquid
Solution Approach 2:
The detection system is segmented into multiple functional zones: a contamination-resistant zone with optical components protected from direct water contact, and a sampling zone where water properties are transferred to the intermediary liquid medium. This segmentation allows each component to perform its function without being exposed to contamination
2Adaptability or versatility
If multiple light wavelengths are used to detect different pollution types, then the detection capability is improved, but the device complexity increases
Solution Approach 1:
The patent employs a universal light source that emits multiple wavelengths simultaneously, and a single photodetector that can detect across a broad spectral range. This multi-functional approach enables detection of various pollution types (organic, inorganic, biological) without requiring separate specialized components for each wavelength
Solution Approach 2:
The system detects different pollution types by analyzing changes in light absorption at different wavelengths. By measuring the spectral absorption characteristics of the intermediary liquid after water sampling, the system can identify and classify various pollution types using a single versatile detection platform
3Productivity
If continuous light beam is used for detection, then the measurement is continuous, but the energy consumption is high
Solution Approach 1:
The patent uses periodic pulsed light beams instead of continuous illumination. The light source emits short pulses at intervals, and the photodetector measures absorption during each pulse. This periodic operation maintains detection capability while significantly reducing average energy consumption compared to continuous beam operation
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
This approach enables reliable detection of various types of pollutants with high sensitivity, providing detailed information on pollution classes and types, improving measurement accuracy and reliability while simplifying the device design and operation.
Implementation Method 1
liquid pollution is assessed with the difference of light flux entering liquid and light flux leaving it
Data Source
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AI summary
A method and system for detecting foreign particles in a liquid, the method and system include transmitting transmitted pulses of radiation, by a transmitter, towards a liquid conduit that is filled with liquid; wherein the transmitted pulses comprises pulses that differ from each by being associated with absorbance frequencies of different foreign particles; receiving, by a receiver, received pulses that propagated through liquid as a result of the transmission of the multiple transmitted pulses; comparing between the transmitted pulses and the received pulses to provide a comparison result; and determining a liquid contamination based on the comparison result.