The characteristics of distributed fiber optic acoustic sensing (DAS) and its application in distributed fiber optic DAS systems

Characteristics of Distributed Fiber Optic Acoustic Sensing (DAS)

1. Restore the on-site sound and monitor the on-site sound;

2. Multiple monitoring function systems can be linked according to needs;

3. Artificial intelligence for data analysis;

4. Through the satellite map early warning management system:

5. Able to accurately locate and alarm anomalies;

6. Fiber breakage positioning system;

7. Information does not interfere with each other and can be monitored on multiple tracks.

Application of Distributed Fiber Optic DAS Acoustic Sensor Monitoring System

The distributed fiber optic acoustic sensing monitoring system, also known as DAS, has high vibration analysis ability and accuracy, and can accurately restore sound information events around the optical cable. It can accurately restore sound information around the optical cable, and multiple channel information can be restored without interference with each other. The DAS monitoring system has an artificial intelligence analysis function. In the audio analysis section, it can automatically filter out interference signals from pre-set whitelist events, such as vehicle passing, wind, rain, and lightning.

At present, the existing warning event models have been improved and established, and the accuracy of event recognition can reach 99%. If there is an abnormal situation, the system will identify the specific location and issue an alarm in a timely manner. The system combines geographic information system (GIS) to accurately locate according to customer needs, and uses 2D satellite images as the user's display page. The interface is intuitive and clear, and the geographical location is easy to remember and recite. By real-time monitoring of the reflected light inside the optical fiber, the specific location of the broken fiber can be accurately located, which helps to accurately locate the fiber optic cable in the first time after it is manually damaged or accidentally damaged during construction, reducing the loss of accidents.

The distributed fiber optic acoustic sensing monitoring system can be integrated with various systems such as user's existing video monitoring system, BOSS system, drone, alarm light, SMS system, etc. or provide development interfaces. It can also customize and develop corresponding software and hardware systems according to user needs.

• Prev：Characteristics of Distributed Fiber Optic Perimeter Security Monitoring System Types of Fiber Optic Distributed Alarm Hosts
• Next：Characteristics of Fiber Optic Temperature Transmitters - Introduction to Fluorescent Fiber Optic Temperature Transmitters