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FS22SI

MEASURING

32

Power indBm

Threshold

Range 1

Range 2

Range 3

Wavelength in nm

undetected peak

detected peaks

Threshold

Threshold

Fig. 4.5

Smart Peak Detection (SPD) detection method

4.4

Common Measuring Difficulties

There may be the possibility of having measuring malfunctions due to several problems
in the sensing network or optical connections. A list of some of the usual problems is
described below with the explanation for its occurrence and correction.

4.4.1

Dirty Connector

When an interrogator is repeatedly being plugged in and out with optical connectors, it is
very important that the connectors are cleaned prior to any connection. If not, dust and
moisture can be deposited in the interrogator adaptor and this will compromise measure­
ments. On 

Fig. 4.6

 a picture of a magnified connector is presented. The dark gray circle

corresponds to the fiber cladding and the small light gray circle is the core of the fiber.
One picture for a clean connector and one picture for a dusty connector are presented.

Clean connector

Dirty connector

Fig. 4.6

Magnified Clean vs Dirty connector

Содержание FS22SI

Страница 1: ...FS22SI Industrial BraggMETER SI ENGLISH User Manual...

Страница 2: ...elos Costa 277 4470 640 Maia Portugal Tel 351 229 613 010 Fax 351 229 613 020 info fs hbkworld com www hbm com fs Mat DVS A04249 10 E00 00 02 2022 Interrogator version v3 SW version 2 6 E Hottinger Br...

Страница 3: ...ree of protection 9 2 4 The marking used in this document 9 3 Operation 11 3 1 Connectors 11 3 1 1 Standard 11 3 1 2 Rack Mountable 12 3 2 Setting Up 12 3 2 1 Power Supply 12 3 2 2 Optical Connectors...

Страница 4: ...5 1 3 System Commands 42 5 1 4 Status Commands 43 5 1 5 Acquisition Commands 44 5 1 6 Memory Commands 56 6 BraggMONITOR SI Software Details 58 6 1 Software Version 58 6 2 Install and Uninstall Softwa...

Страница 5: ...5 FS22SI TABLE OF CONTENTS 7 2 2 Numerical View 74 7 2 3 Spectral View 74 7 2 4 Configuration 81 7 2 5 SCPI Interface 86...

Страница 6: ...sition The FS22 Industrial BraggMETER SI is particularly suitable for large scale sensing networks acquiring a large number of sensors simultaneously and providing 1 S s acquisition rates with sub pic...

Страница 7: ...stributor that purchased the product HBK FiberSensing is a manufacturer registered in the ANREEE Associa o Nacional para o Registo de Equipamentos El ctricos e Electr nicos under number PT001434 HBK F...

Страница 8: ...who uses a laser equipment should be aware of the risks The laser radiation is not visible to the human eye but it can seriously damage user s eye sight The laser is enabled when the interrogator is t...

Страница 9: ...than 1 mm in diameter S For the Rack mountable format IP20 certification protection against the ingress of solids larger than 12 5 mm in diameter 2 4 The marking used in this document Important instr...

Страница 10: ...TION CONSIDERATIONS 10 Significance Symbol Emphasis See Italics are used to emphasize and highlight text and identify references to sections diagrams or external documents and files u This marking ind...

Страница 11: ...ectors 3 1 1 Standard Front view Back view Fig 3 1 Front and back views of FS22SI Standard The connectors and buttons on Fig 3 1 are 1 Optical Output Connectors 2 ON OFF Button 3 Power Connector 4 Eth...

Страница 12: ...1 ON OFF Button 2 POWER and STATUS LEDs 3 Optical Output Connectors 4 Power Connector 5 Electric fuse 6 Safety Power Button 7 Fans 8 Ethernet Connector 3 2 Setting Up 3 2 1 Power Supply To start the...

Страница 13: ...or the Standard version or Power Cable 1 KAB274 available with different plug formats can be ordered from HBK 3 2 2 Optical Connectors The FS22 Industrial BraggMETER SI can be purchased either with FC...

Страница 14: ...ust from entering the device For that reason the interrogators should be kept on a controlled environment far or protected from major dust areas 3 3 3 Optical connectors Optical connectors of the inte...

Страница 15: ...blink faster If this happens please contact HBK FiberSensing technical support 3 5 Switching OFF To avoid accidental shut down of the interrogator it is necessary to press the ON OFF button between 2...

Страница 16: ...strial BraggMETER SI from a personal computer the PC net work properties should be set so that both elements are configured in the same subnet To configure your personal computer so that it is on the...

Страница 17: ...17 FS22SI OPERATION Fig 3 6 Local Area Connection Status u Select the Internet Protocol TCP IP and click on the button Properties Fig 3 7...

Страница 18: ...FS22SI OPERATION 18 Fig 3 7 Local Area connection properties...

Страница 19: ...rrogator If for any chance there is the need to physically change the IP address of the interrogator there is a reset procedure that consists on pressing the ON OFF button for more than 10 seconds Whe...

Страница 20: ...depending on whether or not a dedicated NTP server is being used Further information about NTP can be found at http www ntp org Measuring Systems Typology A measurement system can be as simple as a s...

Страница 21: ...TP NTP Server Ethernet Switch Fig 3 11 Synchronizing interrogators with conventional technology Synchronization is again of extreme importance in such systems When an NTP server is running the Interro...

Страница 22: ...1 ms very good S 2 ms good S 5 ms acceptable S 10ms poor S 10ms not acceptable A successful NTP Sync is achieved if the offset between the internal clock of the device and the NTP server is below 5ms...

Страница 23: ...d and the corresponding configuration can be stored for further measurements The continuous acquisition state allows continuous wavelength acquisition over all optical channels and also performs conti...

Страница 24: ...t Operational States In the error state the FS22 Industrial BraggMETER SI only replies to the commands IDENtification STATus In the ready state the FS22 Industrial BraggMETER SI replies to common comm...

Страница 25: ...ARt ACQUisition WAVElength CONTinuous STARt ACQUisition SAVE CONTinuous STARt ACQUisition ENGIneering CONTinuous STARt ACQUisition SCHEdule STARt The FS22 Industrial BraggMETER SI interrogator runs on...

Страница 26: ...ous STARt ACQUisition ENGIneering CONTinuous STARt ACQUisition WAVElength CONTinuous NTPSync STARt ACQUisition ENGIneering CONTinuous NTPSync STARt The continuous acquisition start commands can only b...

Страница 27: ...s acquisition states the operational state is maintained once the power supply is reestablished with the stored acquisition settings If the power shortage occurs in the scheduled acquisition mode the...

Страница 28: ...ing that the sensing network can have a large number of fiber Bragg grating sensors interro gated at the same time The employed technology allows multi functionality meaning that on the same branch it...

Страница 29: ...the fiber Bragg grat ing reflection spectrum commonly referred as Bragg wavelength Fig 4 2 Power in dBm Wavelength in nm FBG reflection spectrum Wavelength Fig 4 2 Wavelength 4 2 2 Power The Power val...

Страница 30: ...l In the conventional measuring approach the threshold level is defined in dB for each opti cal channel individually and it is defined from the maximum peak power of the channel refer to Fig 4 4 The t...

Страница 31: ...eferenced to the highest peak of each range operating individually in every range Within each sensor range even though it happens either permanently or occasionally that multiple peaks overcome the th...

Страница 32: ...nce and correction 4 4 1 Dirty Connector When an interrogator is repeatedly being plugged in and out with optical connectors it is very important that the connectors are cleaned prior to any connectio...

Страница 33: ...e is a large amount of broad band light being reflected at the connection at both directions meaning that the dynamic range for measuring becomes smaller Wavelength in nm Power clean connector trace d...

Страница 34: ...frequently used for telecom embedded in isopropyl alcohol Insert it in the opti cal adapter number 2 in Fig 4 8 and rotate the swab always on the same direction Fig 4 8 Cleaning connectors 4 4 2 Broke...

Страница 35: ...will destroy the perfect geometry Fig 4 10 on the right and the light that is reflected at the surface will take random directions ending up outside the core ReflectiveFiber Ending Refractive Fiber E...

Страница 36: ...Broken Fiber Fabry P rot Broken and Missaligned Fiber Continuous Fiber Broken but Aligned Fiber Fig 4 11 Cut fiber effect 4 4 5 Fuse Failure Electrical shorts on the power supply may cause problems t...

Страница 37: ...ator s back side next to the power connector number 5 in Fig 3 2 To replace the fuses release the top and bottom springs of the fuses support Fig 4 12 and then remove the piece Fig 4 13 Fuse character...

Страница 38: ...nterrogator is powered at 11 36 VDC which means that the electrical protection should be granted by the power source or the adapter If by any chance the power supply is overcome the interrogator might...

Страница 39: ...Communication Process Commands for the Industrial BraggMETER SI are sent by port 3500 All commands except for Continuous Acquisition see page 49 are received via the same port Continu ous Acquisition...

Страница 40: ...wave lengths FML Formula Polynomial Considering x as the wavelength shift in nm I IP subnet mask and gateway Integer S Number of samples Integer YYYY MM DD Date Integer YYYY year MM month DD day HH MM...

Страница 41: ...Queries the FS22 Industrial BraggMETER SI interrogator type and firmware revision The return string is a list separated by consisting of Manufacturer Unit Name Revi sion Number of Channels Serial Numb...

Страница 42: ...Sets the date of the real time clock of the FS22 The date is defined as YYYY MM DD Example Command SYST DATE 2011 08 19 Answer ACK SYSTem TIME Queries the date of the real time clock of the FS22 The...

Страница 43: ...m IPADdress I I I I I I I I I I I I I I I I Sets the IP address the subnet mask and the gateway of the FS22 The default IP address subnet mask and gateway are 10 0 0 10 255 0 0 0 0 0 0 0 After this co...

Страница 44: ...tection algorithm in the C channel of the FS22 The threshold is a value from 0 to 60 dB Note The threshold value returns to the last stored threshold when the interrogator restarts To change the curre...

Страница 45: ...e actual limits of defined ranges on channel C The number of channels can be set A to retrieve all ranges in all channels simultaneously Example Command ACQU CONF RANG WAVE 3 Answer ACK 1534 13 1536 1...

Страница 46: ...The variable x is used in the formulas to represent the wavelength variation of the sensor relatively to the central wavelength Example Command ACQU CONF RANG FORM 1 2 1512 1 96 2 x 2 104 8 x 30 15 2...

Страница 47: ...th Conventional Method 1 Enabled Interrogator operating with Smart Peak Detection SPD Method Example Command ACQU CONF RANG STAT Answer ACK 1 ACQUisition ENGIneering CHANnel C When interrogator is ope...

Страница 48: ...4 39 624 39 755 39 919 40 074 40 176 40 203 40 182 ACQUisition POWEr CHANnel C Acquires the power of the fiber Bragg grating sensors in the C channel of the FS22 Returns the power value of the fiber B...

Страница 49: ...e value returned by the last 4 bytes of the stream The returned data represents the power values of the OSA traces for all optical chan nels with points from 1500 nm to 1600 nm sampled every 5 pm Exam...

Страница 50: ...port 3500 and corresponding data is received through port 3365 The answer is a string starting with the timestamp with the format YYYY MM DD hh mm ss followed with the values in growing order of wave...

Страница 51: ...4 bytes remaining header length 24 bytes payload length c 8 bytes timestamp i LWORD1 seconds since 1 1 1970 ii LWORD2 fraction of current second mapped to an integer range of 32 bit i e 0 5 s would c...

Страница 52: ...FS22SI REMOTE COMMUNICATIONS 52 Example Command ACQU WAVE CONT NTPS STAR Answer Port 3500 ACK Port 3365 Fig 5 2 NTP answer scheme wavelength values...

Страница 53: ...0 b 4 bytes remaining header length 24 bytes payload length c 8 bytes timestamp i LWORD1 seconds since 1 1 1970 ii LWORD2 fraction of current second mapped to an integer range of 32 bit i e 0 5 s wou...

Страница 54: ...parate directory for each day The directory name is the date in the format YYYYMMDD Note Saving with different operating methods may be saved on the same data set if these two types of data recording...

Страница 55: ...HE STAR Answer ACK ACQUisition SCHEdule PERIod Queries the set period for scheduled acquisitions on the FS22 The answer is a string with time in the following format HH MM SS Example Command ACQU SCHE...

Страница 56: ...of samples is 1 and the maximum is 86399 Note the defined number of samples must never be higher than the number of sec onds available with the defined schedule period Example Command ACQU SCHE SAMP...

Страница 57: ...command does not delete downloaded data This command is sent via port 3500 and corre sponding data is received through port 3365 Files larger than 100 MB must be downloaded using BraggMONITOR Example...

Страница 58: ...4 Bit versions Home Professional or Ultimate edi tions or Windows 8 8 1 32 Bit and 64 Bit versions or Windows 10 32 Bit and 64 Bit versions S Main memory RAM at least 512 Mbyte for Windows XP at least...

Страница 59: ...ng BraggMONITOR SI Software on a PC please follow the described steps u Insert the provided disk with software in the PC u Run Setup exe inside BraggMONITOR folder Information When the operating syste...

Страница 60: ...hould be set so that both ele ments are configured in the same subnet To configure your personal computer so that it is on the same subnet as the default for the interrogator proceed as described on s...

Страница 61: ...61 FS22SI BRAGGMONITOR SI SOFTWARE DETAILS Fig 6 2 Set Run as administrator automatically...

Страница 62: ...uisition actions can be per formed This bar is always on although its buttons may be disabled due to the interroga tor status On the left general information is presented see Fig 7 2 S On the first li...

Страница 63: ...nterrogator will be saved with this time stamp It is possible to change the BraggMONITOR SI Software time reference from UTC to the defined Local Time on your device To do so you should change the con...

Страница 64: ...SER INTERFACE 64 Fig 7 5 Date and time window To adjust the time zone chose the Change time zone button Fig 7 5 Fig 7 6 Date and time settings time zone To adjust the Local Time chose the Change date...

Страница 65: ...nterrogator and BraggMONITOR For that press the Connect button num ber 1 in Fig 7 8 Fig 7 8 Buttons on General Bar A popup window will appear to indicate select the IP Address of the interrogator to w...

Страница 66: ...er 1 in Fig 7 8 changes to disconnect Fig 7 10 Fig 7 10 Connect Disconnect button status 7 1 3 Acquisition Start Acquisition Whenever the software is connected to an interrogator and the software is o...

Страница 67: ...t is possible to obtain absolute values of temperature strain acceleration etc However a sensor configuration must be defined Saving Data To save data press the save button number 3 in Fig 7 8 The dat...

Страница 68: ...icating how many samples were acquired per second The second row is a header containing the labels of each column Fig 7 14 Data file header 1 1st column UTC or Local Date according to what is configur...

Страница 69: ...k proceed as follows Once Microsoft Excel is opened press From Text Data Get External Data see Fig 7 16 and select the data file Fig 7 16 Import data in Excel Then it is necessary to complete text imp...

Страница 70: ...FS22SI BRAGGMONITOR SI USER INTERFACE 70 Fig 7 17 Select data file Fig 7 18 Text Import Wizard 1 3...

Страница 71: ...71 FS22SI BRAGGMONITOR SI USER INTERFACE Fig 7 19 Text Import Wizard 2 3 Fig 7 20 Text Import Wizard 3 3...

Страница 72: ...SI Software application press the Exit button number 5 in Fig 7 8 7 2 Graphical Area The graphical area is divided into five tabs S Graphical View S Numerical View S Spectral View S Configuration S S...

Страница 73: ...m in section will be defined Once the desired Zoom In section is defined release the left mouse button The display will show the zoomed in section only In order to zoom back to full scale press the zo...

Страница 74: ...efined by the sensor Formula in Configu ration tab number 1 in Fig 7 23 Next to the channel identifier the number of sensors detected in that channel is stated number 2 in Fig 7 23 Fig 7 23 Numerical...

Страница 75: ...in Fig 7 24 the user may select which FBG sensor detection method will be used When ranges are ON see Fig 7 24 the spectral graph will display the range associated with each sensor that is listed in...

Страница 76: ...d channel number 11 in Fig 7 24 Fig 7 25 Spectral View Conventional detection method When the Smart Peak Detection method is selected besides the Wavelengths table the Ranges table is also presented n...

Страница 77: ...is updated every time the spectral view tab is selected Important Measurement settings can influence sensor readings When the ranges are OFF the threshold is defined for each chan nel and is the same...

Страница 78: ...the case in which the ranges are ON besides the threshold level the autoscan procedure also takes into consideration the width of the ranges to detect the FBG sensors When performing the autoscan with...

Страница 79: ...ut The Zoom In tool is available every time the cursor is on the graph area Zooming In is only possible over the horizontal axis By pressing the left mouse while moving the mouse to the left or right...

Страница 80: ...to define the folder where data is stored and define the file name Data sets will be recorded in txt format for a single sweep see Fig 7 30 The save button will auto matically return to its default s...

Страница 81: ...operation will discard all previous configurations of all channels Add Edit and Delete Sensor s In order to Add a sensor to a configuration the user is required to fill the fields Name Central wavelen...

Страница 82: ...method is active ranges ON Formula Function defining the correlation between the wavelength shift x and the engineering values Here it is possible to set a formula manually although it is also possibl...

Страница 83: ...ours or 6 Hours Save and Load configuration The configuration is stored in the interrogator and updated while starting the BraggMONI TOR SI Any defined configuration can be saved in txt extension file...

Страница 84: ...ed by the user by pressing the Load button num ber 8 in Fig 7 31 and selecting the file containing the desired configuration see Fig 7 34 Fig 7 34 Loading a configuration Change IP Address To change t...

Страница 85: ...ocess is complete the connection will be established with the new IP Internal Memory Management The data files created during scheduled acquisitions are saved into the internal memory of the interroga...

Страница 86: ...ands are inserted on the command field number 2 in Fig 7 37 and sent by press ing Enter on the keyboard or the send cmd button number 3 in Fig 7 37 The interroga tor s answers appear on the Reply fiel...

Страница 87: ...sing the clear button number 4 in Fig 7 37 Firmware Update It is possible to upgrade downgrade the firmware version of the FS22SI by pressing the upload firmware button number 5 in Fig 7 37 u Download...

Страница 88: ...FS22SI BRAGGMONITOR SI USER INTERFACE 88 Fig 7 40 Update info window...

Страница 89: ...89 FS22SI BRAGGMONITOR SI USER INTERFACE...

Страница 90: ...HBK Hottinger Br el Kjaer www hbkworld com info hbkworld com A04249 10 E00 00...

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