Data Acquisition Card for Distributed Acoustic Fiber Sensing (DAS) with Pulse Output sends TTL pulses directly to the AOM driver, eliminating the need for an additional pulse generator and greatly reducing system complexity.
The UNL-C-F-M-C34-13-7-1-0-0 is a narrow linewidth 1550nm laser module from YB Photonics. It features an ultra-narrow linewidth (<3kHz) making it ideal for distributed fiber optic sensing systems(DVS/DAS) and wind radar.
The DAQ board, which can be set up to 1G sample rate and has built-in trigger output and input interfaces, can be used for applications such as DAS distributed acoustic sensing system with 200M AOM acquisition or LIDAR.
This is a data acquisition card for distributed fiber optic vibration monitoring system (DVS) with built-in TTL pulse signal trigger output function to provide signal to the AOM driver, saving extra signal generator (AWG) and reducing the integration difficulty and complexity of the system.
From the schematic diagram we can see that the distributed fiber optic vibration data monitoring system, using a balanced photodetector for coherent detection, and then need to IQ demodulation of the collected data, demodulation followed by phase unwinding to obtain the amplitude root phase data information.
The fiber optic perimeter intrusion monitoring system realizes fiber optic vibration sensing and monitoring based on the basic principle of Rayleigh scattering, combined with φ-OTDR (Phase Sensitive Optical Time Domain Reflection) technology and signal analysis and processing algorithms.
Coherent Detection Module for Distributed Fiber Optic Vibration/Sound Detection (DVS/DAS) and Wind Radar.It is characterized by high signal-to-noise ratio, high reliability and easy integration.
Fiber optic cable fault finder by integrating distributed fiber optic vibration monitoring system DVS and optical time domain reflectometer OTDR, can quickly find the location of faulty fiber optic cable joints, fiber optic cable fault repair.
The PZT was used to test the Distributed Fiber Optic Acoustic Sensing System DAS at a location of 50KM, using a repetition frequency of 2000Hz, capable of testing signals at 980Hz.
Introduction of data acquisition card for distributed fiber optic vibration monitoring system, 100M sampling rate, PCIe interface with demodulation algorithm.
distributed fiber optic sensing systems have been widely used in various fields. Distributed fiber optic sensing system uses optical fiber as a sensing element, thus realizing distributed measurement of physical quantities.
How long can a distributed fiber optic vibration sensing system monitor? In the laboratory it can support 80km, in the application site to consider the light decay and other reasons, the maximum available 60km.
The spatial resolution is related to your optical pulse parameter setting, which is set according to the monitoring length of the fiber optic cable. 40km distance we can achieve 5m spatial resolution.
The type of fiber used for distributed fiber optic vibration sensing is single-mode G652, which is a very common fiber, all in our communication fiber optic cable, and is not expensive.