Osa crosstalk free and ultracompact fiber optic sensor. Fiber optic sensor market research report forecast to 2022. Depending on the application, fiber may be used because of its small size, or because no electrical power is needed at the. Abbs new focsfs free standing digital fiber optic current sensor solution will facilitate the development of digital substations and enable the grid to get smarter said giandomenico rivetti, head. Figure 4 shows the electronic setup for the acquisition of the current sensor response signals. Introduction electric current measurement is a basic and. Unlike the uncladthinned sensing structure, in an foew sensor based on a dshaped fiber, a dshaped sensing region is made by removing part of the cladding and even the fiber core on one side of the optical fiber, as shown in fig. In this papers two configurations of focs are discussed fiber optic current sensor with 1. By means of our sensor, the minimum detectable phase signal is 1. Chunxi zhang, chuansheng li, xiaxiao wang, lijing li, jia yu, and xiujuan feng appl. 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 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. The largest interferometric fiber optic sensor array reported to date consisted of a time and wavelengthdivision multiplexed architecture combining up to 256 sensors onto a single fiber pair. The fiber optic 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.
Fiberoptic current sensor focs in the fiberoptic current sensor a simple loop of optical fiber around the bus bar replaces the sophisticated head of the conventional transformer. A fiberoptic current sensor for lightning measurement. Optic fiber sensing iot technology and application research. Fiber optic sensing represents a pinnacle of current day sensor technology. Focs are able to replace existing solutions based on the hall effect, which tend to be bulky and heavy. Design principle for sensing coil of fiberoptic current sensor based on geometric rotation effect. Optical fiber current sensor ofcs based on faraday magnetooptic effect has many advantages of immunity against electromagnetic interference, high sensitivity and wide dynamic range. 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. Kiyoshi kurosawa, development of fiber optic current sensing technique and its applications in electric power systems, photonic sensors, 2014, 41. The fiber optic sensor consist of fiber optic cable connected to a remote sensor or an amplifier and has the ability to convert light energy into electrical signal. Focs are able to replace existing solutions based on. This effect is called faraday effect, and is the basic principle of the optical fiber current sensors. Disconnecting circuit breaker dcb with fibre optic current sensor focs abb power grids. The fiberoptic current sensor is based on faraday rotation effect and can.
The transmission of light in the dshaped sensing region can be divided into three categories as follows. Disconnecting circuit breaker dcb with fibre optic current. A fiberoptic current sensor is successfully developed with many potential applications for electric current measurement. This article first introduces iots current status, the key technology, the theoretical. The fiber sensor can be either an intrinsic oneif the modulation takes place directly in the fiberor extrinsic, if the modulation is performed by some external transducer as depicted in fig. New dc current measurement technology with fiberoptic sensor. A fiber optic current sensor is successfully developed with many potential applications for electric current measurement. The mixedtype optical fiber current sensor, using new magneto optic material and having a miniature sensing head, has met the current transformer standards of class 0. The sensing probe consists of two cascaded fp cavities formed with a short piece of multimode fiber mmf and a microairgap made of hollow core fiber hof. Mbs transmission 1985 1st industrial applications and military systems advent of single mode systems. Consequently, they are ideal for the measurement of electrical currents and high voltages in electrical power stations. This book describes important recent developments in fiber optic sensor technology and examines established and emerging applications in a broad range of fields and markets, including power engineering, chemical engineering, bioengineering, biomedical engineering, and environmental monitoring. The fiber sensor can be either an intrinsic oneif the modulation takes place directly in the fiber or extrinsic, if the modulation is performed by some external transducer as depicted in fig.
Pdf the intrinsic advantages of optical sensor technology are very appealing for high voltage applications and can become a valuable. Applied sciences free fulltext optical current sensors for high. Design principle for sensing coil of fiber optic current sensor based on geometric rotation effect. Fiber optics current sensor free standing abb group. Fiber optic current sensors focs and optical current.
The new focs will be suitable for current measurement applications in 245 kv to 800 kv substations. We consider bulkoptics and allfiber current sensors and voltage sensors that. Introduction to fiber optic sensors and their types. It was titled temperature and vibration insensitive fiberoptic current sensorpdf file attached. Fiber optics current sensor free standing focsfs is a free standing 3phase sensor system for 245 kv to 800 kv high voltage substations one system consists in. This book presents measurement principles for characterizing all three basic components of a fiber optic communication system. Pdf fiber optic test and measurement semantic scholar.
Through the process of researches and developments of optical fiber current sensors for a long time, the. Design and development of a lowcost optical current sensor. Key advantages of a fiber optic current sensor over traditional sensors include the abilities to conform to large, complex structure geometries. The mixedtype optical fiber current sensor, using new magnetooptic material and having a miniature sensing head, has met the current transformer standards of class 0. And then the main advantages and disadvantages of several. This fiber optic pressure sensor promises significant advances as a medical monitoring tool, a research instrument, and a component of cardiovascular assist and replacement devices.
We report on abbs fiberoptic current and voltage transducers and their applications. Pdf an opticalfiber sensor based on faraday effect is developed for measuring. Analysis and elimination of bias error in a fiberoptic. Optical engineering volume 50, issue 7 show author affiliations. In european workshop on optical fibre sensors, scotland, 8 july 1998. With product ranges available offering polarization maintaining, bendinsensitive, rareearth doped, claddingpump and photosensitive fibers. Optical current transducers for electrical power systems. The design is inherently free of magnetic saturation, therefore suitable for capturing fast transient currents, short circuit currents, and alternating current. Distortionfree measurement of electric field strength with a mems sensor. Optical schematic for a high sensitivity fiber optic current sensor, showing 1 broadband erbium doped light source, 2 coupler, 3 photo detector, 4 polarizer, 5 45o splice, 6 fiber modulator, 7 900m long delay coil, 8 45o splice, 9 quarter wave plate, 10 16m of. Pdf fiberoptic current and voltage sensors for highvoltage. Fiberoptic current and voltage sensors for highvoltage. The optical fiber consists of the core and the cladding, which have different refractive indexes. Bending the fiber as the deformer closes on the fiber, radiation losses increase and the.
We consider bulk optics and all fiber current sensors and voltage sensors that exploit the electro optic effect in bgo and the piezoelectric effect in quartz. Introduction in recent years optical current and voltage. Fiber optic sensors with a random fiber patterns demonstrate high displacement sensitivity because of the close interaction between neighboring fibers, but have a short measurement range. Fiber optic sensor market research report forecast to. As the development of the technology of the iot and the fiber optical sensor, the combination of the both is a big question to be discussed, and the fiber optical iot also has a good development prospect. 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. The growth of the internet of things iot industry has become a new mark of the communication domain. Optical current transformers based on optical fibre sensors are now being. Mode fiber as a faraday element in an inte rferometric fiber optic current sensor.
We report on abbs fiber optic current and voltage transducers and their applications in highvoltage substations. The sensor is also small, light weight, safe from interference, and free of hysteresis and saturation. The sensor discussed in this paper is optical fiber based. 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. This sensor type is highly flexible and can measure electric current traveling through large structures. 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. Fiber optic sensors fundamentals and applications, fourth edition, 2014 available at. The light beam travels through the core by repeatedly bouncing off the. Then, research and development of the method has been carried out at many institutes for a long time. Apr 18, 20 disconnecting circuit breaker dcb with fibre optic current sensor focs abb power grids.
Development of fiberoptic current sensing technique and. In comparison to the bulkoptics transducer it offers more flexibility in its design and applications as well as improved performance. Main unit m8 connector type fsn41c keyence america. It is selfintegrating, thus the output is directly related to the total current. A fiberoptic current sensor focs is a current sensor for measuring direct current. Also, optical current sensors measure the magnetic field generated by the.
Pdf a fiberoptic current sensor for lightning measurement. Apr 01, 2003 when a current passes through a metalcoated optical fiber, the ohms heat induces a phase change of the guided light within the fiber. A new type of optical fiber current sensor is reported with a detailed introduction to its system design, assembly and performance test results. As the development of the technology of the iot and the fiberoptical sensor, the combination of the both is a big question to be discussed, and the fiberoptical iot also has a good development prospect.
The photodiode converts the optical signal to an electric current. Free standing fiber optic current sensor focsfs for. 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. Aug 31, 2016 optical fiber current sensor ofcs based on faraday magneto optic effect has many advantages of immunity against electromagnetic interference, high sensitivity and wide dynamic range. Fiber optics current sensor free standing focsfs enabling.
Disconnecting circuit breaker dcb with fibre optic. In a fiberoptic current sensor design with nonreciprocal phase modulation, as shown in fig. Wenglor optical fiber, plastic, cuttable, diffuse, coaxial fibers, m3 head, stainless steel, polyethylene jacket, 60mm sensing distance, 2m length. A fiber optic 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.
Pdf optical current sensors for high power systems. Two configurations of the sensor have been investigated and compared. In this papers two configurations of focs are discussedfiberoptic current sensor with 1. The sensor perfectly integrates the magnetic field along the closed path described by the sensing fiber.
Intensity based fiber optic sensors require more light and these sensors use a multimodelarge core fibers. A michelson interferometer is used for detecting this phase change. Osa analysis and elimination of bias error in a fiberoptic. Fiber optic current sensors focs are resistant to effects from magnetic or electrical field interferences. Recent advances in fiberoptic evanescent wave sensors for. Fiber optic sensors are available at mouser electronics.
After that, in the 1980s, a method using optical fiber as the faraday sensor element optical fiber current sensor is proposed 2. Current, sensor, fiber, faradayeffect, power, application citation. Single fiber reflective sensor light leaves the fiber end in a cone pattern, and strikes a movable reflector. It also covers system level measurements, and discusses the.
Abbs new focsfs free standing digital fiber optic current sensor solution will facilitate the development of digital substations and enable the grid to. Chunxi zhang, chuansheng li, xiaxiao wang, lijing li, jia yu, and. Fiber optic pressure sensor for biomedical applications. A fiberoptic current sensor for lightning measurement applications. Fiber optic current sensor pdf download preladgechan.
A hemispherical fiber distribution separates the transmitting and receiving fibers into two distinct groups, with one half of the probe tip composed of. We propose and demonstrate a crosstalk free simultaneous measurement system for temperature and external refractive index eri implemented by dualcavity fabryperot fp fiber interferometer. As a result, the design is inherently free of magnetic saturation, therefore suitable for capturing fast transient currents, short circuit currents, and alternating current ac with dcoffset. By forming closed loops around aircraft structures, the enclosed current can be measured. This microampere current sensor is principally designed based on this thermal effect. Fiberoptic current sensor fiberoptic current sensor lin, wuuwen 20030401 00. Fiber optic sensors current status and future possibilities.
Fiber optic current sensor focs in the fiber optic current sensor a simple loop of optical fiber around the bus bar replaces the sophisticated head of the conventional transformer. The fiberoptic current sensor is based on faraday rotation effect and can overcome. Fiber optic current sensors kristian bjork svensson sp sveriges tekniska forskningsinstitut brinellgatan 4 department of microtechnology and nanoscience photonics laboratory chalmers university of technology gothenburg, sweden 2014. Disconnecting circuit breaker dcb with fiber optic current sensor focs 420 550 kv for digital substations a smart grid ready solution for use with iec 6185092le process bus communication the dcb with focs includes three functions in one device. Originally developed for inflight lightning measurement, the sensor. Disconnecting circuit breaker dcb with fiber optic. The optical phase detection circuit, light source and digital signal processor are contained within the. Disconnecting circuit breaker dcb with fiber optic current. By using a singleended optical fiber around the current conductor that utilizes the magnetooptic effect faraday effect, focs measures uni or bidirectional dc currents of up to 600 ka within 0. This is the most authoritative, complete source of test and measurement information for engineers who design and maintain fiber optic networks. Time division multiplexing has been revealed to have low crosstalk and high sensitivity for multiplexing a high number of sensors 99, 100.
This paper highlights the main fiber optic sensor networks general concepts and characteristics and seeks to provide a state of the art of modern multiplexing sensor networks. This book describes important recent developments in fiber optic sensor technology and examines established and emerging applications in a broad range of fields and markets, including power engineering, chemical engineering, bioengineering, biomedical engineering, and. Applications of fiberoptic sensors conference paper pdf available in ieee transactions on components hybrids and manufacturing technology 1. This electric signal consists of two components refering back to equation 8. A prototype pressure gauge has been built, and the feasibility of the optical approach verified. This type of sensor has been under development by the power indust ry for decades. In classifying optical fiber sensor networks, it is necessary to make a first subdivision between them. Advanced photonics journal of applied remote sensing. The relationship between fiberreflector distance and intensity of returned light example 2. It was titled temperature and vibration insensitive fiber optic current sensor pdf file attached. Conference proceedings papers presentations journals. The shown figure gives an idea about how the light intensity work as a sensing parameter as well as how this arrangement makes the fiber to work as a vibration sensor. Fiberoptic sensor for aircraft lightning current measurement.
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