Enciclopedia de Tecnología de Detección de Rejilla de Bragg de Fibra - Preguntas Frecuentes FBG - Preguntas Frecuentes de Sensores FBG - Preguntas Frecuentes de Demoduladores FBG - Análisis de Problemas Comunes de Aplicación FBG
Análisis de ventajas del sensor de temperatura de rejilla de Bragg de fibra (FBG) - Termómetro FBG de alta sensibilidad
This article analyzes the high sensitivity characteristics of OFSCN® capillary seamless steel tube fiber bragg grating (FBG) sensor (thermometer) from a theoretical perspective. It discusses the influence of path length y temperature transmission medium (packaging material) on the sensitivity of the grating sensor, specifically focusing on the thermal conduction aspect of the packaging material for fiber bragg grating.
It highlights that the patented all-metal packaging structure y smaller size (volume) of OFSCN® capillary seamless steel tube fiber bragg grating (FBG) temperature sensor are the fundamental reasons for its high sensitivity in encapsulating FBGs.
As stated on the official website of DCYS, 'OFSCN® capillary seamless steel tube fiber bragg grating (FBG) temperature sensor (FBG thermometer) has the characteristics of high sensitivity, fast thermal conduction, good accuracy, small size, light weight, high tensile strength, high compressive strength, high temperature resistance, waterproof y moisture-proof, non-combustible, y corrosion resistance.' Today, we will focus on analyzing its high sensitivity characteristics.
1. Encapsulation Structure of OFSCN® Capillary Seamless Steel Tube Fiber Bragg Grating (FBG) Temperature Sensor
A typical OFSCN® capillary seamless steel tube fiber bragg grating (FBG) temperature sensor (FBG thermometer) has a longitudinal structure as shown in Figura 1 and 2:
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Figura 1 |
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| Figura 2 |
Su perfil de sección transversal en el extremo de la cola se muestra en las Figuras 3 y 4:
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Figura 3 |
Figura 4 |
The blue part shown in Figura 3 represents the fiber and fiber bragg grating, located at the center of the seamless steel tube. This diagram represents an ideal theoretical state, while in practical operation, the OFSCN® capillary seamless steel tube fiber bragg grating (FBG) temperature sensor (FBG thermometer) takes on the actual state
2. Sensibilidad de la Rejilla de Bragg de Fibra en Sensores de Temperatura de Rejilla de Bragg de Fibra
Sin duda, las rejillas de Bragg de fibra (FBG) 'desnudas' sin ninguna encapsulación exhiben la mayor sensibilidad en la medición de temperatura. Sin embargo, debido a la fragilidad de la fibra y de la rejilla de Bragg de fibra (FBG), las rejillas de Bragg de fibra desnudas son casi inutilizables en aplicaciones de ingeniería prácticas y solo se usan temporalmente en investigación de laboratorio. En la operación práctica, las rejillas de Bragg de fibra (FBG) deben encapsularse, y todos los métodos de encapsulación reducirán más o menos la sensibilidad de la rejilla de Bragg de fibra.
Por lo tanto, al encapsular sensores de rejilla de Bragg de fibra (FBG), es necesario considerar cómo mejorar su sensibilidad. Sin la cooperación de los sensores, la tasa de actualización del equipo de demodulación de rejilla de Bragg de fibra carecería de sentido. Incluso si la tasa de actualización del demodulador de rejilla de Bragg de fibra alcanza los 5000 Hz, ¿de qué sirve? ¿Puede la variación de temperatura del sensor alcanzar 5000 veces por segundo?
3. Packaging Material of OFSCN Micro Seamless Steel Tube Fiber Bragg Grating Temperature Sensor
The secret behind the high sensitivity of OFSCN® capillary seamless steel tube fiber bragg grating (FBG) temperature sensor primarily lies in two aspects: the overall all-metal material characteristics y the unique product structure (sensor structure detailed in Figures 1, 2, 5, 6).
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Figura 5 |
Figura 6 |
Whether it is the traditional fiber bragg grating temperature sensor (FBG thermometer) or OFSCN® capillary seamless steel tube fiber bragg grating (FBG) temperature sensor (FBG thermometer), both use metal for encapsulating the FBG section. This is because metal has higher thermal conductivity than Otro materials. When the ambient environment or the temperature of the object being measured changes, heat can quickly transfer through the metal, accurately reflecting the external environment or the temperature of the object.
Unlike traditional fiber bragg grating temperature sensors (FBG thermometers), OFSCN® capillary seamless steel tube fiber bragg grating (FBG) temperature sensors utilize only stainless steel material at the location of the FBG. They do not require adhesive to fix the fiber bragg grating, as heat can be transferred through the metal without the need for various adhesives.
Therefore, OFSCN® capillary seamless steel tube fiber bragg grating (FBG) temperature sensors (FBG thermometers) have higher sensitivity. Higher sensitivity also implies more accurate temperature measurement y faster response speed.
4. Distancia de Conducción Térmica de Sensores de Temperatura de Rejilla de Bragg de Fibra
Unlike traditional fiber bragg grating temperature sensors (fiber bragg grating thermometers), OFSCN® capillary seamless steel tube fiber bragg grating (FBG) temperature sensors (FBG thermometers) use smaller-sized stainless steel seamless tubes throughout. Smaller size means faster thermal conduction, which in turn leads to higher sensitivity y faster response speed.
Lo más importante, cuando la fuente de calor externa tiene energía térmica limitada, el tamaño más pequeño reduce la disipación de calor y minimiza el impacto del equipo de medición externo en el objeto que se está midiendo. Esto es muy beneficioso en muchas mediciones y también significa una medición de temperatura más precisa.
Our philosophy is: 'OFSCN®, make optical fiber stronger!'
DCYS is a professional manufacturer of high-sensitivity optical fiber grating sensors, providing analysis of the advantages of fast response y rapid heat conduction of FBG sensors; the brand of high-sensitivity FBG sensors is 'OFSCN'.