The role of distributed fiber optic vibration sensors in preventing damage to underground cables and oil pipelines-INNO

What are the advantages of underground cables

Underground cables refer to cables that are often buried underground compared to common overhead lines, and are also known as underground cables. Cables are made of one or more insulated conductors with an insulation layer and a protective layer, used to transmit electricity or information from one place to another. After entering modern society, due to land constraints, high traffic pressure, and urban construction, large cities generally use underground cable transmission methods. Compared to overhead lines, cables have advantages such as small footprint, reliable transmission, und starke Anti-Interferenz-Fähigkeit.

How to monitor the damage of underground cables

In den letzten Jahren, the proportion of underground cables in power transmission and distribution systems has been increasing. Jedoch, they are often damaged by external forces during use, which seriously affects the safety and reliability of cable power supply. daher, Sicherzustellen, dass die Kabelstromversorgung nicht durch äußere Kräfte beschädigt wird, ist zu einem dringenden Problem geworden, das die Energiebetriebsabteilung lösen muss. It is difficult to solve the problem of external damage in underground cable tunnels and other power pipelines through daily line inspections using existing technology for damage prevention and monitoring. Existing technology is difficult to monitor the specific situation of each cable in real-time, and it is difficult to find the specific location when damage occurs. daher, it is necessary to invent distributed vibration sensing devices and anti vibration systems to prevent external force damage to cables.

Die Anwendung von fiber optic sensors in perimeter security monitoring

Interferometric fiber optic sensors have the advantages of high sensitivity and dynamic range. Using optical fibers as sensing and transmission units, Sie werden nicht so leicht durch elektromagnetische Störungen beeinträchtigt. Der übliche interferometrische faseroptische Sensor verwendet eine Zweistrahl-Interferometerstruktur, welches zur Messung von Vibration und Schall verwendet wird, und hat ein breites Anwendungsspektrum im Bereich der Perimetersicherheit. Durch Überwachung verschiedener Vibrationssignale am Glasfaserkabel, Alarme werden ausgelöst, um in Echtzeit Warnungen vor Eindringlingen und Überschreitungsverhalten rund um den Perimeter bereitzustellen. Es wird häufig auf Flughäfen eingesetzt, Gefängnisse, Schulen, Fabriken, High-End-Communities, und andere Bereiche zur Perimeterprävention.

Vibrations- und Sicherheitsüberwachung von Ölpipelines

Ölfernleitungen sind Rohrleitungssysteme mit großem Durchmesser und großer Entfernung, Das sind die nationalen Energieadern und Schlüsselprojekte der Volkswirtschaft. They shoulder the important responsibility of providing energy security for the healthy and rapid development of the national economy. Their safe operation has significant social and economic significance. The traditional pipeline safety protection is achieved through the persistent monitoring of pipelines by pipeline patrol workers. This method is not only labor-intensive, but also may not be detected by patrol workers in a timely manner when pipeline damage occurs, which may cause serious damage to the pipeline. daher, the pipeline safety warning system plays a very important role in the transportation energy of pipelines.
The pipeline fiber optic vibration safety warning system uses fiber optic cables laid on the pipeline as sensors to sense soil vibration signals along the pipeline in real time. Through intelligent identification and analysis, it alerts and locates destructive events such as mechanical construction and manual excavation that threaten pipeline safety. It notifies patrol personnel to rush to the site to inspect and prevent further deterioration of the destruction event.

Eigenschaften von Fiber Optic Vibration Monitoring System

1. Monitoring of anti-theft and construction damage prevention of oil, Gas, and coal pipelines for transportation;
2. Monitoring of underground gas, Heizung, and water pipeline leaks and construction damage prevention in cities;
3. Long distance fence intrusion prevention system, such as airports, Lagerhäuser, military restricted areas, border lines, usw;
4. Address and structural change alarms, such as mine roadway vibration, Verschiebung, mountain and slope collapse warnings;
5. Accurate positioning of trapped personnel in mining accidents;
6. Other vibration measurement alarm applications;