The fiber-optic sensor application on ship vessel
[introduction] American naval lab passes feeling technology to take seriously very much to fiber-optic grating, already developed the fiber-optic grating that is used at many bits of stress to measure to pass feeling technology, these structures include board of bridge, large dams, hull, spacecraft and plane. Aid financially in American naval below, development has shipping structure health to monitor a system, already controlled the low cost that is used at health of structure of group of American sea warship to monitor fiber-optic network, this system is based on grating of business consumed fine and communication technology; Plan to use fiber-optic grating to pass feeling technology and mixture space / cent answer is measured in real time with the technology pull the three-dimensional figure that pulls array, the improvement that this kind of technology measures to array will have array estimation technology more than an amount class, can strengthen naval tactics dominant position thereby.
(1) shipping structure health monitors a system
1999 spring, lab of American navy research (Naval Research Laboratory, NRL) the person consumed fine such as the Michael Todd of ministry of fiber-optic and address structure passes feeling system fast to KNM Skjold coastguard cutter undertakes intelligence is monitored.
2000, 6, 25 DavidsonInstruments announces to develop vessel of completely fiber-optic ship to pass feeling system for American navy. American navy is studying 21 centuries surface fights ship vessel. The disembarkation that these ship vessels include to be designed by DD21 atttacks chaser, also include the cruiser that designs by CG-21. 2002, 7, 10 DavidsonInstruments had announced to complete this project, its result data is used at make and be being improved of ship vessel to provide reference. At the same time this completely fiber-optic it is OK to pass feeling system the bow wave effect of counteractive nuke.
(2) vessel of completely fiber-optic ship passes feeling system
2002, naval research center of 2 United States (Navy Office Of Naval Research) with maritime war center (Naval Surface Warfare Center, carderock Division) in England installed on vessel of ship of royal RV Triton fiber-optic pass feeling system to undertake to its health of ship vessel structure is monitored. The ship vessel that SPA installed him monitors system and installation of sensor of more than 50 FBG to be on naval vessel carapace, electric sensor exists in the meantime with test and verify its precision is mixed function. This test system accompanies RV Triton to be in maritime the maritime voyage of 2 weeks checks, final data is analysed by NSWCCD and SPA, in order to coach the project of RV Triton is improved. At the same time the United States special also have fun at pass this feeling system to be used in Trimaran (3 naval vessel are paratactic) in technical development.
3) barge health monitors a system
Center of American maritime war (Naval Surface Warfare Center, carderock Division) undertake to JMLS of system of barge of standard of standard of American naval joint the structure is monitored. With 4 passageways in all 16 FBG sensor, among them sensor of 14 meet an emergency and 2 Flat-Pack sensor (include two FBG, can measure temperature and meet an emergency at the same time) , monitor a system with the ship vessel health of SPA
(4) emissive system environment monitors a system
Naval Surface Warfare Center of center of American maritime war, what Port Hueneme Division is developing him is fiber-optic pass feeling test system to launch a system in order to decide exterior ship vessel is perpendicular in order to be used at be being monitored for a long time (VLS) the operation environment that blasts off with missile. The healthy state that waits for launcher because of missile can be shaken concussion, the star of high fever and humidity, must undertake to its periodic detects. In this test system, metrical physical quantity includes temperature, meet an emergency, pressure, acceleration and humidity.
(5) network of sensor of ship vessel FBG
2002, the person such as the Karianne of institute of 4 Norwegian national defence, FBG sensor network was built on two ship vessel, 50 sensor distributing to go up in the carapace of ship vessel, the stress that measures it distributings, use finally finite yuan the method analyses his to get force model. The stress that can go up through monitor and limitting case so distributings, add the security of ship vessel and service life. What still include a Micron Optics among them is adjustable of humorous F-P filter and an OptoSpeed exceed glow diode, seal furnish plan newly in order to add sensor service life.
(6) ship vessel propeller is fiber-optic pass feeling system
Naval Surface Warfare Center of center of battle of American naval surface, finished on the ship vessel propeller that Carderock Division is landing platform dock LPD17 to go up fiber-optic pass feeling system, wrap among them used FBG sensor array and Flat-Pack, have the functional characteristic of density of high speed and tall sensor, wavelengh answer uses the is based on high speed sensor to inquire a system number space that used SPA at the same time implement. For test and verify the design of this propeller, 4 passageways 24 sensor are used at the test, sensor of 21 meet an emergency, 3 temperature sensor, sampling frequency 2KHz.
(7) ship vessel structure is fiber-optic pass feeling system
1999, 10 in American naval lab aid financially below, systems Planning And Analysis Inc. Made a low cost, the structure that is used at monitoring boat of American sea warship and rational fiber-optic network. In this system, pass those who distributing to go up in ship vessel crust to pass feeling point, can real time computation and report ship vessel work in ocean the circumstance getting power when. The modification of this design that monitors a technology remotely to be able to be ship vessel and upgrade provide guidance, have early-warning function to the integrality of ship vessel at the same time.
(8) sonar passes feeling system
Current, sonar sensor already was paid close attention to particularly by each country navy. In applying actually, procrastinate dragging sonar array is by a string the bag contains water to listen implement module comprises, among them water listens implement the position of source of noise of OK and affirmatory underwater. Such every sonar module decided to discern relative to the position of sound noise the accuracy of noise source. Electronic sensor although already above the domain is applied, but the problem that as a result of its oneself exists, such as completely fiber-optic delay the development that drags sonar system, with smooth method comes accurate measurement each water on array listen implement the position appears exceedingly essential. The application that sensor of Fiber Bragg Grating(FBG) needs distributed form appearance to measure to this kind is exceedingly ideal. SPA had developed a relative cost with FBG sensor low, light procrastinates drag array form appearance and position to survey a system, overcame a lot of current weakness. The method that is united in wedlock with soft hardware photograph is real time decompose and showed array and soft structure be out of shape. At the same time this system is the FBG demodulation system that is based on Micron Optics.