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Distributed temperature sensing systems (DTS) are optoelectronic devices which measure temperatures by means of optical fibres functioning as linear sensors. Temperatures are recorded along the optical sensor cable, thus not at points, but as a continuous profile. A high accuracy of temperature determination is achieved over great distances.
A wireless sensor network consists of a spatially distributed collection of autonomous sensor nodes. Each node is designed to monitor physical or environmental conditions, such as temperature, sound, pressure, eetc. and to cooperatively relay the collected data through the network to a main location.
Wireless sensor networks (WSNs) refer to networks of spatially dispersed and dedicated sensors that monitor and record the physical conditions of the environment and forward the collected data to a central location. WSNs can measure environmental conditions such as temperature, sound, pollution levels, humidity and wind.
[8] [9] The fiber-optic sensor is well suited for this environment as it functions at temperatures too high for semiconductor sensors (distributed temperature sensing). Optical fibers can be made into interferometric sensors such as fiber-optic gyroscopes , which are used in the Boeing 767 and in some car models (for navigation purposes).
Given the physical location of the DTM within the heart of the distribution grid, in addition to the DTM reporting frequency capability, the versatility of this intra-grid sensor is expansive. Utilities across the U.S. are beginning to turn to transformer technologies to improve distribution reliability and efficiency, as well as customer ...
Distributed fiber-optic sensing technology can be used for leak detection through DAS and DTS. [26] AP Sensing has a regional office in Bahrain , and operates throughout the Middle East . [ 27 ] Their Distributed Fibre Optic Sensing is designed to monitor pipeline leaks, and is used by the Kuwait Oil Company and the Abu Dhabi National Oil Company .
By measuring the ratio in intensity between the Stokes and anti-Stokes components, an absolute value of temperature can be measured by a distributed temperature sensing (DTS) system. The larger wavelength shifts compared to Brillouin scatter mean that it is easier to separate the scattered Raman light from the un-shifted Rayleigh scattered ...
If the process requires a very fast response to temperature changes (fractions of a second as opposed to seconds), then a thermocouple is the best choice. Time response is measured by immersing the sensor in water moving at 1 m/s (3.3 ft/s) with a 63.2% step change. Size