The Principle, Characteristics and Applications of Fiber Bragg Grating Temperature Sensing Fire Detection System-INNO

Fiber Bragg grating temperature measurement, as a new technology of fiber optic temperature measurement, has been widely developed and applied. It uses fiber optic as the signal transmission and sensing medium, and utilizes the temperature sensitivity of fiber Bragg grating and the principle of light reflection to detect temperature changes. The fiber Bragg grating linear temperature sensor made using fiber Bragg grating demodulator technology is particularly suitable for temperature monitoring in high and low voltage switchgear, Кабельные муфты, petroleum and petrochemical storage tanks, и так далее. in substations due to its on-site non electric detection, intrinsic safety and explosion-proof, Защита от электромагнитных помех, молниезащита, хорошая теплоизоляция, длительный срок службы, и небольшие размеры. It can detect fire hazards in a timely manner and prevent them before they occur.

Fiber Bragg Grating Temperature Sensing Fire Detection System

Волоконная решетка Брэгга (ВБР) fire detector is a new type of fire detection system based on FBG temperature sensing technology. Он обладает характеристиками высокой чувствительности, хорошая долговременная стабильность, and distributed installation and measurement. Due to its all optical characteristics
The characteristics of fiber passive measurement are particularly suitable for use in harsh environments such as flammable, взрывчатый, и сильные электромагнитные. Датчик волоконно-оптической решетки - это новый тип волоконно-оптического датчика, изготовленный из волоконно-оптических решеток. Это полностью оптоволоконное пассивное устройство, разработанное в 1990-х годах. С использованием волоконно-оптических решеток могут быть изготовлены различные датчики, Например, температура, напряжение, ударение, ускорение, давление, и так далее. Различные датчики волоконно-оптической решетки могут иметь разную рабочую длину волны, so wavelength division multiplexing technology can be used to cascade multiple fiber optic grating sensors in a single fiber for distributed measurement, Повышение гибкости проводки. Волоконно-оптические датчики обладают характеристиками небольших размеров, малый вес, совместимость с оптическими волокнами, Низкие вносимые потери, и хорошая долговременная стабильность производительности.

Fiber optic temperature sensors are a rapidly developing application range in the field of fiber optic sensors. Fiber optic temperature sensors can replace traditional temperature sensors in some situations. По сравнению с традиционными тензодатчиками сопротивления, Оптоволоконные датчики имеют очевидные преимущества, такие как небольшие размеры, малый вес, отсутствие электромагнитных помех, Радиационная стойкость, and distributed measurement. Следовательно, Они нашли широкое применение в области измерения температуры.

Characteristics and Applications of Fiber Bragg Grating Temperature Sensing Fire Detection System

Волоконная решетка Брэгга (ВБР) temperature fire detectors have the characteristics of high measurement accuracy, хорошая долговременная стабильность, Распределенное измерение, and high sampling frequency, making them suitable for many temperature detection needs. They are mainly used in the following areas: 1. Fire detection in residential areas; 2. Temperature monitoring of commercial buildings; 3. Temperature monitoring of oil tanks in oil depots; 4. Temperature monitoring in explosion-proof areas; 5. Civil and construction engineering monitoring; 6. The distribution of temperature underground in oil wells.

Волоконная решетка Брэгга (ВБР) thermal fire detectors generally include FBG thermal sensor arrays, signal processors, service terminals, customer terminals, and fire alarm controllers

The fiber optic grating linear temperature fire detector has high reliability and stability in transmission lines, and has the ability to stably transmit data under harsh conditions. В то же время, it has excellent resistance to damage, flame retardancy, good water resistance, and high strength. It adopts a service terminal/customer split mode, which is convenient for system topology and can achieve rich remote management interfaces. It is convenient to connect with upper management systems and can provide customized interfaces. Easy to configure and provide multiple alarm methods. The setting method of the internal fiber optic grating can make the fiber optic grating closest to the measured environment to the maximum extent, greatly improving the temperature response time of the fiber optic grating. Especially in fire alarms that require rapid response, it can provide real-time feedback on temperature changes at the fire site, prevent losses caused by response delay, and also improve the protection strength of the fiber optic grating. By using passive fiber Bragg gratings to sense the deformation of elastomers as alarm triggering signals, Он имеет такие преимущества, как защита от электромагнитных помех, Большое расстояние передачи, and intrinsic safety. It can also be used in places without power supply and in dark and humid environments.