Szatkowski3 nasa langley research center, hampton, va 23681. Two 20ft fiber optic sensing runs were installed on this 1. The description is limited to those sensors that are. A fiberoptic sensor capable of realtime monitoring of biofilm formation in. 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. A fiber optic current sensor for lightning measurement applications conference paper pdf available may 2015 with 242 reads how we measure reads. Fiber optic sensors are available at mouser electronics. Measurement is made directly on the object using fiber optics. Measurements of the fiber inside a solenoid show over 40db of open loop dynamic range as well as a minimum detectable current of 0.
Optical fiber temperature sensors such as fiber bragg gratings fbgs and distributed fiber optic sensors have also been studied recently. The principles of optical and optical fiber current sensor technology have. Fiber optic temperature sensor for medical device system research. Pdf the physical phenomenon and construction of optic fiber sensors are discussed in this paper. Synchrophasors can be just another digital output format. The selection of the electronic amplifier is the key to successfully solving this measurement task. Course description chs249 fiber optic current sensors. Sensors 2012, 12 8604 in the field of distributed fiber optic sensors, another definition is commonly used for spatial resolution, i. Optical fibre current sensor for electrical power engineering. Calibration and testing of distributed fiber optic sensors.
In this paper our aim is to study the different results of displacement sensor using fibre optic coupler. Fbgbased fibreoptic current sensors for power systems protection. A simple fiber optic displacement sensor for measurement. Fiber optic sensor systems consist of three photoelectric sensing modes such as retroreflective, throughbeam and diffuse reflective modes as these systems. Fiber optic current sensor research papers academia. New fiber optic sensors offering a superior display and unmatched detection stability click here to download the pdf. Pdf an opticalfiber sensor based on faraday effect is developed for measuring total lightning electric current. Eric udd is president of columbia gorge research, a company he founded in 2005 to promote fiber optic sensor technology. The cable transmits the light to areas which would be otherwise inaccessible. The easy and flexible use characterizes this technical innovation. Pdf the intrinsic advantages of optical sensor technology are very appealing for high voltage applications and can become a valuable asset in a new. Significantly, the telecommunication technology has changed the recent advances in fiber optic technology.
Abb fiberoptic current sensor focs for high dc currents. A fiberoptic current sensor focs is a current sensor for measuring direct current. Osa fiberoptic current sensor with selfcompensation of. 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. A fibre optic sensor is a photoelectric sensor with optical fibre connected to its light source. Many of the components associated with these devices are often developed for the fiber optic. Rms current on the primary side of a distribution network. Designing fibers that enable our customers to minimize coil package size while improving device reliability and splicing compatibility is a challenge we prepare for. 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. Optical current transducers for electrical power systems nist page.
A fiberoptic current sensor for lightning measurement. Bowers, hybrid silicon photonic integrated circuit technology, ieee j. 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. Its high dynamic pressure sensitivity and simple fabrication process make it an attractive tool for acoustic. Fiber optic temperature sensor for medical device research. The fiber sensor can be either an intrinsic oneif the modulation takes place directly in the fiberor extrinsic, if the. 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. Features and advantages of fiber optic sensor features. 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. All employees of the client companyorganization may use this. 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.
We demonstrate a method for selfcompensation of scale factor changes of an interferometric fiberoptic current sensor caused by source wavelength shifts, e. Compact tb doped fiber optic current sensor with high. Fiber optic sensors fundamentals and applications, fourth edition, 2014 available at. Fiber optic sensor company product matrix market forecast data table. In the present work, a fibre optic displacement sensor is presented. Ofs specializes in optical fiber design and production tailored to the environment of specific. A flexible fiber optic sensor enables easy installation in limited spaces such. Fibre optic sensor an overview sciencedirect topics. Fiber optic sensing represents a pinnacle of current day sensor technology. Features and advantages of fiber optic sensor sensor. Opsens gaas fiber optic temperature sensors are ideal for accurate temperature measurement for medical device system validation works.
A comparison of fiber optic sensor technologies for structural monitoring brillouin fiber optic sensors excel at long distance and large area coverage. Fiberoptic sensor data can be rapidly acquired in real time. Pdf optical current sensors for high power systems. Integrated compact optical current sensors with high. Electric, current and magnetic field fiber optic sensors rotation such as fiber optic gyroscopes. 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 optical phase detection circuit, light source and digital signal processor are contained. What links here related changes upload file special pages permanent link page information wikidata item cite this page. We demonstrate a sagnac based fiber optic current sensor using only 10cm of terbium doped fiber with a high verdet constant of 15. Current status and future possibilities smart sensors, measurement and instrumentation book 21 by ignacio r. A highly sensitive fiber optic current sensor using terbium doped fiber is. In this papers two configurations of focs are discussed. 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. The savings in substation space as a result of the sensor. 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.
The fiberoptic revolution has transformed fiberoptic sensors as well. A fiberoptic sensor is a device which emits and receives light energy and converts it to electric current. The use of fiber optic sensors for oil and gas applications has been driven in part by the inherent advantages that the technology offers. This version of internet explorer is either no longer supported by microsoft, or is obsolete and some. An introduction series in fiber optic sensors by yunjiang rao, zengling ran, et al. Focs fibre optic current sensor for measuring high dc currents. Opt2053 wenglor optical fiber, plastic, cuttable, diffuse, coaxial fibers, m3 head, stainless steel, polyethylene jacket, 60mm sensing distance, 2m. 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. Brief overview of optical current and voltage sensors. A highly sensitive fiber optic current sensor using terbium doped. Pdf a fiberoptic current sensor for lightning measurement. Fiberoptic sensor for aircraft lightning current measurement.
The optocontrol clsk fiber optic sensors consist of a transmitter and receiver for infrared or ultraviolet light with subsequent signal processing. The last revolution appeared as designers to combine the productive results of optoelectronic devices with fiber optic telecommunication devices to create fiber optic sensors. 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. Fiber optic current sensors are able to replace existing solutions based on the hall effect, which tend to be bulky and heavy. Fiber optic sensors for gap, diameter, edge and presence. 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. The optical fiber consists of the core and the cladding, which have different refractive indexes. Fiberoptic current and voltage sensors for highvoltage. 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. 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.
Apn0008 applications of fiber optic distributed strain. 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. With product ranges available offering polarization maintaining, bendinsensitive, rareearth doped, claddingpump and photosensitive fibers. Introduction to fiber optic sensors and their types. The following table lists a few fiber alternatives to consider for your coil applications. 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.
The sensor probe is attached to an insulated hot stick and positioned onto the medium or high voltage line. 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. Compact tb doped fiber optic current sensor with high sensitivity duanni huang, sudharsanan srinivasan, and john e. Bowers electrical and computer engineering department, university of california santa barbara, calfornia 93106, usa. 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 voltage and current sensor systems sensor electronics and merging unit optional cable management box cabling system optical transformers secondary devices e. Introduction optical fiber can be used as a medium for telecommunication and computer networking because it is flexible and. It was titled temperature and vibration insensitive fiberoptic current sensor pdf file attached. New dc current measurement technology with fiberoptic. An adequately tailored fiberoptic retarder in the optical circuit introduces wavelengthdependent mixing of the orthogonal polarization modes of the sensor. Many fiber optic sensors utilize tightly wound precision coils. This site provides information useful for people involved in manufacturing to select sensors. 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. View fiber optic current sensor research papers on academia.
Optical transducers can be easily installed on or integrated into existing substation equipment such as circuit breakers or bushings resulting in significant space. American institute of aeronautics and astronautics 1 fiberoptic sensor for aircraft lightning current measurement truong x. It allows flexible selection of installation location and can be used in various environments. The sensor exhibits a noise limited detectable pressure level of 14. The light beam travels through the core by repeatedly bouncing off the.