Pdf the physical phenomenon and construction of optic fiber sensors are discussed in this paper. A comparison of fiber optic sensor technologies for structural monitoring brillouin fiber optic sensors excel at long distance and large area coverage. Fibre optic sensor an overview sciencedirect topics. Szatkowski3 nasa langley research center, hampton, va 23681. This site provides information useful for people involved in manufacturing to select sensors. Fiber optic sensors fundamentals and applications, fourth edition, 2014 available at. Based on the magneto optic effect faraday effect in a singleended optical fiber around the current conductor, the focs can measure uni or bidirectional dc currents up to 500 ka with an accuracy of 0.
Fiber optic sensor systems consist of three photoelectric sensing modes such as retroreflective, throughbeam and diffuse reflective modes as these systems. Abb fiberoptic current sensor focs for high dc currents. Fiberoptic current and voltage sensors for highvoltage. We demonstrate a method for selfcompensation of scale factor changes of an interferometric fiberoptic current sensor caused by source wavelength shifts, e. Introduction optical fiber can be used as a medium for telecommunication and computer networking because it is flexible and.
The sensor probe is attached to an insulated hot stick and positioned onto the medium or high voltage line. S7 series the s7 series is the first fibre optic amplifier to be manufactured in europe that is equipped with a full 4 digit display, confirming datasensors technological leadership. Optical fiber temperature sensors such as fiber bragg gratings fbgs and distributed fiber optic sensors have also been studied recently. New dc current measurement technology with fiberoptic. With product ranges available offering polarization maintaining, bendinsensitive, rareearth doped, claddingpump and photosensitive fibers. Pdf optical current sensors for high power systems. What links here related changes upload file special pages permanent link page information wikidata item cite this page. With over 30 years experience of the specialty optical fiber industry, fibercore ltd, the world leader in its field, is exclusively dedicated to the design, manufacture and commercialization of specialty fibers.
Fiberoptic sensor for aircraft lightning current measurement. A highly sensitive fiber optic current sensor using terbium doped fiber is. A fiberoptic current sensor for lightning measurement. Bowers electrical and computer engineering department, university of california santa barbara, calfornia 93106, usa. This version of internet explorer is either no longer supported by microsoft, or is obsolete and some. The fiberoptic current sensor is based on faraday rotation effect and can overcome most limitations of traditional current sensors, making accurate direct aircraft lightning measurement feasible and affordable. A fiberoptic sensor is a device which emits and receives light energy and converts it to electric current. American institute of aeronautics and astronautics 1 fiberoptic sensor for aircraft lightning current measurement truong x. Significantly, the telecommunication technology has changed the recent advances in fiber optic technology. A fiberoptic acoustic pressure sensor based on a largearea nanolayer silver diaphragm is demonstrated with a high dynamic pressure sensitivity of 160 nmpa at 4 khz frequency. Features and advantages of fiber optic sensor sensor. Introduction to fiber optic sensors and their types.
The fiberoptic revolution has transformed fiberoptic sensors as well. Fiber optic current sensor research papers academia. Apn0008 applications of fiber optic distributed strain. The sensor exhibits a noise limited detectable pressure level of 14. Current status and future possibilities smart sensors, measurement and instrumentation book 21 by ignacio r. A fiberoptic sensor capable of realtime monitoring of biofilm formation in. Compact tb doped fiber optic current sensor with high. View fiber optic current sensor research papers on academia. Abbs newly developed fiberoptic current sensor focs is a spin off from a sensor developed for highvoltage substations and opens totally new perspectives in the. A fiber optic sensor and related method are described, with the sensor including a crosscoupling element in the optical path between a polarizing element and a sensing element, but separated from the sensing element itself. The easy and flexible use characterizes this technical innovation. It allows flexible selection of installation location and can be used in various environments. A fiber optic current sensor for lightning measurement applications conference paper pdf available may 2015 with 242 reads how we measure reads. Pdf a fiberoptic current sensor for lightning measurement.
The optical phase detection circuit, light source and digital signal processor are contained. Synchrophasors can be just another digital output format. Optical transducers can be easily installed on or integrated into existing substation equipment such as circuit breakers or bushings resulting in significant space. A highly sensitive fiber optic current sensor using terbium doped. The use of fiber optic sensors for oil and gas applications has been driven in part by the inherent advantages that the technology offers. Measurements of the fiber inside a solenoid show over 40db of open loop dynamic range as well as a minimum detectable current of 0. The principles of optical and optical fiber current sensor technology have. Osa fiberoptic acoustic pressure sensor based on large. Compact tb doped fiber optic current sensor with high sensitivity duanni huang, sudharsanan srinivasan, and john e. Fiber optic sensing represents a pinnacle of current day sensor technology. Brief overview of optical current and voltage sensors. Fiber optic current sensors are able to replace existing solutions based on the hall effect, which tend to be bulky and heavy.
In this paper our aim is to study the different results of displacement sensor using fibre optic coupler. In the present work, a fibre optic displacement sensor is presented. Sensing applications have been solved in the industrial factory environment by exploiting the dielectric properties of the fiber in hazardous environments and electrically noisy areas. The focsltb current sensor device is a technology enabler that may lead to a large impact on high voltage devices, substation design, and substation automation. Its high dynamic pressure sensitivity and simple fabrication process make it an attractive tool for acoustic. A simple fiber optic displacement sensor for measurement. Two 20ft fiber optic sensing runs were installed on this 1.
Fiber optic cable threaded mounting cylinder 15 mm 15 mm r 15 mm r fiber sensor plastic cylinder fiber optic cable 10 mm 15 mm r 15 mm r 15 mm 10 mm r r r 10 mm stainless steel pickup head fiber sensor please note. Electric, current and magnetic field fiber optic sensors rotation such as fiber optic gyroscopes. Optical voltage and current sensor systems sensor electronics and merging unit optional cable management box cabling system optical transformers secondary devices e. Fiber optic sensors are available at mouser electronics.
All employees of the client companyorganization may use this. A fibre optic sensor is a photoelectric sensor with optical fibre connected to its light source. Most of the fiber optic sensors are multiplexed along the length of a fiber by using light wavelength shift for each sensor or by determining the time delay as light passes along the fiber. Course description chs249 fiber optic current sensors.
Calibration and testing of distributed fiber optic sensors. With over thirty years of experience in the fiber optic sensor field, he has made fundamental contributions to fiber rotation, acceleration, acoustic, pressure, strain, vibration, temperature, humidity, and corrosion sensors. Focs fibre optic current sensor for measuring high dc currents. Pdf an opticalfiber sensor based on faraday effect is developed for measuring total lightning electric current. Fiber optic sensor company product matrix market forecast data table. Fiber optic temperature sensors fiber optical sensors fiber optic temperature sensors the fiber optic temperature sensors use either wlpi or gaas technology and can be used in a wide range of applications ranging from cryogenic temperature to high temperature up to 350 degrees. Fbgbased fibreoptic current sensors for power systems protection. A fiberoptic current sensor focs is a current sensor for measuring direct current. Pdf the intrinsic advantages of optical sensor technology are very appealing for high voltage applications and can become a valuable asset in a new. A fiberoptic sensor is a sensor that uses optical fiber either as the sensing element intrinsic sensors, or as a means of relaying signals from a remote sensor to the electronics that process the signals extrinsic sensors. The seal wire operated under shortcircuit conditions, i. Fiber optic switches, counters, and sensors used in position sensing, presenceabsence, and frequency monitor applications are explored. Ofs specializes in optical fiber design and production tailored to the environment of specific.
Optical current transducers for electrical power systems nist page. An introduction series in fiber optic sensors by yunjiang rao, zengling ran, et al. The optocontrol clsk fiber optic sensors consist of a transmitter and receiver for infrared or ultraviolet light with subsequent signal processing. Rms current on the primary side of a distribution network. We demonstrate a sagnac based fiber optic current sensor using only 10cm of terbium doped fiber with a high verdet constant of 15. Fiber optic temperature sensor for medical device system research. Bowers, hybrid silicon photonic integrated circuit technology, ieee j. The optical fiber consists of the core and the cladding, which have different refractive indexes. This type of technology allow for real time measurements of long assets such as pipelines, conveyers and fences by monitoring changes that occur in a fiber optic cable affixed to the asset. The cable transmits the light to areas which would be otherwise inaccessible. Sensors 2012, 12 8604 in the field of distributed fiber optic sensors, another definition is commonly used for spatial resolution, i.
In this papers two configurations of focs are discussed. The light beam travels through the core by repeatedly bouncing off the. This course aims to accelerate the development of new integration projects, substation designs and new substation automation products based on the new optical sensing technology. The technology and markets for sensor fibers are very broad. Fiber optics current sensor free standing focsfs is a freestanding 3phase sensor system for 245 kv to 800 kv high voltage substations one system consists in.
An adequately tailored fiberoptic retarder in the optical circuit introduces wavelengthdependent mixing of the orthogonal polarization modes of the sensor. The following table lists a few fiber alternatives to consider for your coil applications. The fiber sensor can be either an intrinsic oneif the modulation takes place directly in the fiberor extrinsic, if the. A flexible fiber optic sensor enables easy installation in limited spaces such. Integrated compact optical current sensors with high. Fiber optic sensors for gap, diameter, edge and presence. Fiberoptic sensor data can be rapidly acquired in real time. The last revolution appeared as designers to combine the productive results of optoelectronic devices with fiber optic telecommunication devices to create fiber optic sensors. Opsens gaas fiber optic temperature sensors are ideal for accurate temperature measurement for medical device system validation works. The description is limited to those sensors that are.
In fact, those used for highend currents can weigh as much as 2000 kg compared to fiber optic current sensors sensing heads, which weigh less than 15 kg. The savings in substation space as a result of the sensor. Many of the components associated with these devices are often developed for the fiber optic. The fiber optic sensor has an optical fiber connected to a light source to allow for detection in tight spaces or where a small profile is beneficial. Osa fiberoptic current sensor with selfcompensation of. Presently im am doing a theory based research project on fiber optic current sensors which are mainly used to sense current in substations. Opt2053 wenglor optical fiber, plastic, cuttable, diffuse, coaxial fibers, m3 head, stainless steel, polyethylene jacket, 60mm sensing distance, 2m. The fiber coil housing is at the bottom of the breaker mechanism arrow in the gap between the current carrying bus bar and the composite insulator of the breaker. Optical fibre current sensor for electrical power engineering. It was titled temperature and vibration insensitive fiberoptic current sensor pdf file attached. Measurement is made directly on the object using fiber optics.
New fiber optic sensors offering a superior display and unmatched detection stability click here to download the pdf. Features and advantages of fiber optic sensor features. The selection of the electronic amplifier is the key to successfully solving this measurement task. Many fiber optic sensors utilize tightly wound precision coils. Fiber optic temperature sensor for medical device research. Designing fibers that enable our customers to minimize coil package size while improving device reliability and splicing compatibility is a challenge we prepare for. This measurement should be carried out at the end of the sensing length where the signal to noise ratio is the worst, so that the claimed.