What is armored single-mode temperature measurement fiber

What does armored single-mode temperature measuring optical fiber mean

To enhance the performance of optical fibers, a protective “armor” is added between the coating layer and the core cladding layer to form armored optical fibers. While not affecting the various superior optical properties of the fiber itself, the tensile and compressive strength of the fiber is enhanced, solving problems such as impact resistance, lateral pressure resistance, and rat bite resistance. People have started to coat the fiber bundle with another layer. Fiber optic distributed temperature measurement is widely used in temperature monitoring and fire alarm of facilities such as power, Petrolchimico, trasporto, buildings, and water conservancy. The length of high-voltage transmission cables is very long, and any point on the cable that overheats may cause huge economic losses.

The composition of a Fibra ottica distribuita temperature measurement system

The distributed fiber optic temperature measurement system adopts armored fiber optic to prevent various external forces from damaging. The main temperature measurement components include temperature measurement host, interruttore, server, temperature measurement optical cable, and fire controller. The temperature measurement host, interruttore, and server are connected through a communication backbone network. The fire controller is equipped with a relay unit, and the fire controller is connected to the temperature measurement host. The temperature measurement optical cable is connected to the temperature measurement host.

Distributed fiber optic temperature measurement system for mining

Various contacts, busbars, cable joints, and electrical equipment connectors inside mining equipment are prone to poor contact and abnormal plug-in eccentricity. This will lead to excessive contact resistance, causing severe heating at this point under high current. The result is abnormal joint temperature, exacerbating contact surface oxidation, further increasing contact resistance, forming a vicious cycle. After a certain stage of development, it will cause serious faults and damage the safety and reliability of power supply. This is the main form of fault in high-voltage switchgear. Pertanto, real-time temperature monitoring of the contact points, timely detection of hot spots inside the switchgear, and early prediction and alarm of faults are extremely important for ensuring the safety of life and property.

The principle of sistema di misurazione della temperatura distribuito in fibra ottica

One of the temperature measurement techniques, which is based on Raman scattering and optical time-domain reflection technology, can achieve the measurement of temperature and distance. Specifically, Raman reflection is based on the temperature effect of backward Raman scattering spectra generated during the propagation of light in optical fibers. Quando il quanto di luce incidente si scontra con le molecole di materiale nella fibra, si verificano collisioni elastiche e anelastiche. Quando si verifica una collisione elastica, Non c'è scambio di energia tra il quanto di luce e le molecole materiali, e la frequenza del quantum di luce non cambia in alcun modo, con il risultato che la luce di diffusione di Rayleigh mantiene la stessa lunghezza d'onda della luce incidente; Nelle collisioni anelastiche, avviene lo scambio di energia, and photons can release or absorb phonons, resulting in the production of a longer wavelength Stokes silk light and a shorter wavelength Stokes light. A causa della sensibilità della luce anti Stokes alla temperatura, il sistema utilizza il canale ottico Stokes come canale di riferimento e il canale ottico anti Stokes come canale del segnale. The ratio of the two can eliminate non temperature factors such as light source signal shifting and fiber bending, Ottenere la raccolta di informazioni sulla temperatura. The principle of fiber optic temperature measurement is based on the backward Raman scattering effect.

Sensore di temperatura in fibra ottica, Sistema di monitoraggio intelligente, Produttore distribuito di fibre ottiche in Cina