Distributed fiber optic vibration sensing monitoring host sensor production factory-INNO

Fiber optic is a commonly used communication medium, and in the era of rapid development of 5G technology, fiber optic has become increasingly important in IoT technology and social security. The impact of fiber optic working environment may directly affect the implementation of fiber optic functions. daher, it is necessary to detect fiber optic vibration, especially in the event of destructive events, and to provide intrusion signal alarms for the use of fiber optic. Jedoch, the similarity and complexity of various intrusion signals make it quite difficult to detect and classify vibration signals for alarm. How to accurately identify various intrusion signals and reduce false alarm rates is the first technical challenge to be solved for intrusion signal detection in fiber optic vibration detection systems.

Fiber optic vibration sensors are generally used in the field of perimeter security, and typical applications include museums, sports venues, national defense communication optical cables, communication base stations, Flughäfen, train stations, Eisenbahnlinien, Öl- und Gaspipelines, usw.

Faseroptische Sensoren are both sensors and transmission channels. Im Vergleich zu herkömmlichen elektrischen Sensoren, fiber optic sensors have advantages such as high measurement accuracy, starke Beständigkeit gegen elektromagnetische Störungen, leichte Materialien, gute Kanalsicherheit, großer Messabstand, und kontinuierliche verteilte Messung. Durch Vergraben oder Verlegen von optischen Detektionsfasern in der überwachten Struktur, verschiedene physikalische Informationen wie Temperatur, Stress, Beanspruchung, usw. der Struktur können durch optische Signale gewonnen werden, Dadurch wird eine Echtzeitüberwachung abnormaler Zustände erreicht.

Das gesamte System besteht aus a Verteilter faseroptischer Host zur Überwachung von Vibrationsmessungen, ein Analyse-Host, und eine Systemplattform zur Überwachung externer Schäden. Die gesamte Host-Ausrüstung ist im selben Schrank im Kommunikationsraum der Umspannstation installiert. The monitoring host can achieve all-weather monitoring of external damage hazards along high-voltage cables laid in the same trench by utilizing one core of spare single-mode optical fiber already laid in the pipeline, which includes communication business optical cables. There is no need to lay another multi-mode optical fiber for transmitting and sensing vibration signals.

1. No installation is required along the route, and one core of spare optical fiber from the communication optical cable is taken as the sensing and transmission channel to connect to the monitoring host;

2. No blind spots in the entire construction line, achieving monitoring of external damage to high-voltage cables throughout the line;

3. The system architecture is simple, requiring only the installation of monitoring and analysis hosts in the communication room of the substation, without the need to install any additional sensors on the line;

4. A comprehensive warning system is in place. When there is a large machinery operating near the optical cable, the system will issue a warning and distinguish the alarm levels based on different threshold settings. If the large machinery is traveling near the optical cable or intersects with the optical cable route for a short time, the system will only record external damage hazards and will not issue warning messages;

5. It can identify the vibration signals of crushers, excavators, pipe jacking machines, exploration machines, Pfahlrammen, handheld machinery (such as air picks), and underground pipe threading operations. Die Bewegungs- und Betriebssignale großer Baumaschinen können genau unterschieden werden.