Optical fiber sensor popularity application prospect
fiber sensor based on optical quantity conversion, based on optical signal conversion and transmission of the carrier, using transmission signal of a light sensor. Sensors are sensitive toward, and adaptable, compact and intelligent. From 2012 to 2017, the global sensor ( Including some fraction and distributed) The average annual increase of up to 20 consumption value. 3%. Sensors in the sensitive, and adaptable, compact and intelligent direction. In this process, the sensor the sensor to the new members of the family. fiber optic equipment has many excellent properties, such as: resistance performance of electromagnetic and atomic radiation interference, diameter of fine, soft, light mechanical properties; Insulation, without induction electrical properties; Water resistant, high temperature resistant, corrosion resistant chemical properties, it can reach the place where (in man Such as high temperature) Or harmful to the people of the region ( Such as the radiation zone) , have the effect of human eyes and ears, and still can go beyond physical boundaries, receiving people feel less than the outside world of the senses.
fiber sensor based on optical quantity conversion, based on optical signal conversion and transmission of the carrier, using transmission signal of a light sensor. Optical fiber sensor is mainly composed of light source, ( Fiber optic) And optical detector and additional devices, etc. The light source is a lot of more phyletic, commonly used light source such as tungsten, lasers and light-emitting diodes. Optical fiber thin, soft, flexible, can is a kind of transparent light fibers.
fiber can make optical information transmission, because of using the optical principle of total reflection, the Angle of incidence is greater than the critical Angle of total reflection of light can occur on the fiber core and cladding interface total reflection, the reflected light is still on the same Angle of incidence to the other side of the interface, in this way, the light will be repeatedly occurred in the interface between total reflection and transmission. Additional device is mainly some mechanical parts, it varies with the types of measured parameters and measuring method.
according to a report from ElectroniCast, according to data from 2012 to 2017, the global sensor ( Including some fraction and distributed) The average annual increase of up to 20 consumption value. 3%, their annual consumption value from 15 in 2012. $800 million in 2017 to 39. 800 million dollars.
however, the United States account for most of the market share of the world's fiber optic sensor. According to relevant data show that in 2007, the sensing market value is 2. $3. 5 billion, 2008 to 3. $300 million, 2009, 4. About $300 million, predicts will amount to about $1. 6 billion in 2014, the compound annual growth rate of 30%, higher than global compound annual growth rate of 10%.
sensing using mainly divides into five directions:
( 1) Oil and gas & ndash; — P/T underground reservoir monitoring of the sensor, seismic array, the energy industry, power plants, boiler and steam turbine, power cable, turbine, transportation, oil refineries;
( 2) The aerospace & ndash; — Jet engines and rocket propulsion system, the fuselage;
( 3) Civil infrastructure & ndash; — Bridges, DAMS, roads, tunnels, landslide;
( 4) Transportation & ndash; — Monitoring, movement of weight, railway transportation safety;
( 5) Biomedical & ndash; — Medical temperature and pressure, intracranial pressure, minimally invasive surgery, disposable probe measurement.
in which it is predicted that the distributed sensor in 2013, the market demand will be up to 5. 8. 6 billion dollars ( About 3. 6 billion yuan) By 2016, will reach $1. 1 billion ( About 6. 7 billion yuan) , 70% for oil and gas industry. Optical fiber is widely used in the oil and gas industry. However, this kind of fiber optic zui at least can detect most physical properties & ndash; — From the light intensity, displacement, temperature, pressure, rotation, voice, tension to the magnetic field, electric field, radiation, fluid, liquid level, chemical analysis and vibration.
However, with the increased prevalence of fiber optic equipment, it has become far more affordable.
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