Protected Spectral Sensor Layer for Harsh-Environment Analysis
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Solution Overview
Problem
Existing spectral sensor systems are inadequate for real-time, in-line measurements in harsh environments, such as high-pressure, high-temperature, or corrosive conditions, due to potential damage or contamination of the optical detector units.
Innovation Solution
A spectral sensor system with an optical detector unit protected by a resistant layer that is partially transparent to light and configured to detect spectra at multiple wavelengths, allowing non-contact operation and resistance to harsh conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical detector unit is directly exposed to the sample in harsh environment, then the measurement capability is maintained, but the detector unit is damaged or contaminated by harsh conditions
Solution Approach 1:
A protective layer is introduced as an intermediary element between the optical detector unit and the harsh environment. This layer is specifically designed to be transparent to the relevant wavelength regions while providing mechanical and chemical protection against harsh conditions such as high pressure, temperature, and corrosive substances, thereby allowing the detector to operate without direct exposure to harmful factors
Solution Approach 2:
The protective layer is implemented as a thin film or shell structure that is optically transparent to the detected wavelength regions. This thin film provides sufficient protection against harsh environmental factors while maintaining optical transmission characteristics necessary for spectral detection, effectively shielding the detector without blocking the measurement signal
2Reliability
If a protective layer is added between the sample and optical detector unit, then the detector unit is protected from harsh environment, but the optical transmission may be impaired
Solution Approach 1:
The protective layer is designed with specific local properties: it is made transparent to the wavelength regions of interest for spectral detection while being resistant to harsh environmental factors. This selective transparency ensures that the layer provides protection without significantly attenuating the optical signal in the critical wavelength regions
Solution Approach 2:
The protective layer's optical and mechanical parameters are optimized to balance protection and transmission. By carefully selecting materials and thickness parameters, the layer achieves sufficient mechanical strength and chemical resistance while maintaining high optical transmission in the detected wavelength regions, minimizing the trade-off between protection and signal quality
3Productivity
If in-line measurements are implemented for real-time process control, then production efficiency is improved, but the sensor system is exposed to harsh industrial conditions
Solution Approach 1:
The protective layer serves as a mediator that enables the sensor system to operate in harsh industrial environments for real-time in-line measurements. It shields the sensitive optical detector components from direct exposure to process conditions such as high pressure, temperature, and corrosive media, thereby ensuring long-term reliability while maintaining continuous measurement capability for process control
Solution Approach 2:
The system replaces complex mechanical protection mechanisms with an optically transparent protective layer that provides environmental shielding without moving parts. This simplifies the sensor design for in-line deployment while ensuring durability in harsh industrial conditions, enabling reliable real-time measurements along production lines
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 real-time, accurate material classification and quantification in harsh environments by minimizing contamination and damage, facilitating integration into existing devices for process control and quality analysis.
Implementation Method 1
the at least one layer is at least partially optically transparent to the detected spectrum of the light
Implementation Method 2
each respective detector element of the plurality of detector elements is configured for detecting one or more respectively different wavelength regions
Data Source
AI summary
A spectral sensor system for analysing a sample in a harsh environment comprising: an illumination unit configured for emitting light to the sample at, at least two wavelengths; an optical detector unit comprising a plurality of detector elements, wherein each respective detector element of the plurality of detector elements is configured for detecting one or more respectively different wavelength regions, wherein the optical detector unit is configured for detecting a spectrum of the light, the spectrum having non-zero components at the at least two wavelengths, after the light has interacted with the sample; and at least one layer arranged between the sample and the optical detector unit; wherein the at least one layer is at least partially optically transparent to the detected spectrum of the light; and wherein the at least one layer is sufficiently resistant to the harsh environment.