Distributed Acoustic Sensing (DAS) is a technology that enables continuous, real-time measurements along the entire length of a fiber optic cable. Conventional sensors depend on discrete sensors measuring at pre-determined points, whereas DAS utilizes the optical fiber. Increasing adoption of optical fiber communication is expected to aid in growth of the distributed acoustic sensing market.
Fiber optic cables have been an integral part of the telecommunications and computer industry for more than half a century. It was not only the medium that created these fibers, but also the indispensable system that integrates them into any communication or computing system. There are several key elements of fiber optics that have made it such an influential and crucial technology. These include high speed, low bandwidth, high data rate per unit area and low power consumption. Fiber optics also offers several key advantages over other forms of communication systems.
Various advantages of DAS are expected to aid in growth of the distributed acoustic sensing market. One of the most important advantages offered by distributed acoustic sensing systems is its ability to efficiently detect and isolate sources of ambient noise. One source of ambient noise can mask the source of a desired sound. Distributed acoustic monitoring uses the ability of acoustic fibers to "see" through objects and to measure and isolated any sources of distributed noise. For instance, if the source of a sound is located at a certain temperature and location on the ocean bottom, then the temperature of the ocean bottom will also be measured and recorded during a particular recording.
There are different methods of acoustic measurement available in the distributed acoustic sensing market. One such method is the Doppler measurement, which involves measuring the distance between two points on a fiber optic cable. The distance is measured as the angle between the fiber tip and the surface that are contacted.
In a typical laboratory setting, the distributed acoustic sensing fiber can be installed inside a tower or on a fiberglass pedestal supported by steel or concrete columns. The distance between the source and the sensing fiber or cable will dictate the bandwidth of the fibers or cable. The fiber or cable may also need to be run through or under various barriers. When evaluating different applications for a DAS, it is important to evaluate the potential sources of interference and select the best solution for your specific needs available in the distributed acoustic sensing market.
No comments:
Post a Comment