Manufacturers of fiber optic grating temperature sensors and fiber optic grating tunnel fire monitoring systems-INNO

Capteur de température à réseau à fibre optique est un composant du système de surveillance des incendies du tunnel à réseau de fibres optiques. Le système de mesure de la température du réseau à fibre optique peut être appliqué à de nombreuses occasions, comme les câbles de tunnel, appareillage de commutation, fire protection, etc..

Le système de surveillance d'incendie de tunnel à grille à fibre optique est un système d'alarme incendie à détection de température à grille à fibre optique linéaire développé par la société FJINNO sur la base de ses propres avantages technologiques de produit et de son expérience d'application à long terme dans plusieurs industries., spécialement pour les endroits tels que les tunnels routiers et les tunnels de métro. En adoptant des technologies brevetées telles que les réseaux d'encodage et les réseaux haut débit, le problème de l'alarme incendie dans un tunnel de 20 km sans relais a été résolu, briser le monopole de la technologie Raman étrangère à fibre optique dans ce domaine. It has been successfully applied in an 18km tunnel and promoted to more than 50 other tunnels.

Caractéristiques de Fiber Bragg Grating Tunnel Fire Monitoring System

No electricity detection, intrinsic safety explosion-proof;

Using grating for signal detection, the signal is digitized and not affected by fluctuations in light intensity, resulting in high detection accuracy;

Set fire compartments according to different wavelengths, perform synchronous detection, and truly achieve real-time monitoring;

Realize differential temperature composite alarm, with accurate and reliable alarm;

The system has self checking function, which can monitor its own operation in real time and output fault alarm sound and light signals;

En utilisant fibre optique to transmit signals, résistant aux interférences électromagnétiques, and with good operational stability;

Low signal attenuation, capable of long-distance transmission, achieving remote monitoring;

The system composition is convenient and flexible, with each detection system relatively independent, compact structure, and easy installation and maintenance;

Good corrosion resistance, not afraid of moisture, et longue durée de vie.

Adopting advanced digital demodulation methods, proprietary patented technology, and the latest production processes;

Differential temperature alarm predicts/alarms based on the rate of temperature rise in cable trenches/cable joints, with good predictive ability;

The total time for rapid response to temperature detection, traitement du signal, and judgment shall not exceed 20 secondes;

Accurately locate the alarm points to each temperature sensor, with a spacing of generally 5-12.5 meters and adjustable deployment spacing;

Visual operation of temperature list, courbe de répartition de la température, temperature and alarm history records on the interface;

Real time self inspection and calibration, saving time and effort, with high reliability and accuracy;

Long term stability is achieved through the use of non adhesive packaging technology, which has strong protective capabilities and is suitable for measurement in high temperature and humidity environments, avoiding creep and drift that are prone to occur in traditional packaging processes. The normal operating life is over 20 années;

Good adaptability through various commonly used output interfaces;