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Measuring

FS22 SI

A4249-8.0

HBM: public

43

4.4

Common Measuring Difficulties

There may be the possibility of having measuring mal
functions due to several problems in the sensing network
or optical connections. A list of some of the usual prob
lems 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 measurements. On

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

The most common effect of dirt on the connections is
that there 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.

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Содержание FS22 SI

Страница 1: ...User Manual English FS22 SI Industrial BraggMETER SI...

Страница 2: ...osta 277 4470 640 Maia Portugal Tel 351 229 613 010 Fax 351 229 613 020 fibersensing hbm com www hbm com fs Mat 7 2002 4249 DVS A4249 8 0 HBM public 10 2017 Interrogator version v3 0 SW version v2 4 E...

Страница 3: ...lass 1 Laser 12 2 2 3 General Precautions Considerations 13 2 2 4 Certification 14 3 Operation 15 3 1 Connectors 15 3 1 1 Standard 15 3 1 2 Rack Mountable 16 3 2 Setting Up 17 3 2 1 Power Supply 17 3...

Страница 4: ...Cut Fiber 47 4 4 5 Fuse Failure 49 5 Remote Communications 51 5 1 Communication Protocol Syntax 51 5 1 1 Command Syntax 51 5 1 2 Common Commands 54 5 1 3 System Commands 55 5 1 4 Status Commands 57 5...

Страница 5: ...l Bar 82 7 1 1 Date and Time 83 7 1 2 Connecting to the Interrogator 86 7 1 3 Acquisition 88 7 1 4 Software and Interrogator Information 94 7 1 5 Exit Application 94 7 2 Graphical Area 94 7 2 1 Graphi...

Страница 6: ...o be attained even for long fiber leads and lossy connections Multiple sensors can be connected in series in each opti cal fiber in combination with one four or eight optical channels with parallel ac...

Страница 7: ...10 820 FS22 Industrial BraggMETER SI Octo channel K FS22 13 010 820 FS22 Industrial BraggMETER SI Octo channel HBM FiberSensing interrogators are compatible with catman software a powerful tool for da...

Страница 8: ...le rate 1 S s Optical detection Logarithmic Dynamic range3 50 dB Laser Source Optical output power4 Single 0 dBm Quad 3 dBm Octo 6 dBm Linewidth 500 MHz Connectors Optical FC APC and SC APC Electrical...

Страница 9: ...o 70 C Storage humidity 95 non condensing Shock Resistance 20 g 11 ms EN60068 2 27 Vibration Resistance9 2 5 g EN60068 2 6 Mechanical Dimensions w x h x d Standard 155 x 125 x 275 mm Rack Mountable 48...

Страница 10: ...NIST traceable gas cell Further details on HBM FiberSensing technical notes 2 With simultaneous acquisition 3 Considered as the ratio between the optical power emitted at an optical channel and the mi...

Страница 11: ...rnment or the local authorities The correct disposal of your old appliance will help prevent potential negative consequences for the environment and human health For more detailed information about di...

Страница 12: ...be focused by the eye into an extremely small spot on the retina resulting in localized burning and permanent damage The lasers are classified by wavelength and maximum output power into the several s...

Страница 13: ...ge user s eyesight The laser is enabled when the interrogator is turned on Users should never put their eyes at the level of the hori zontal plane of the optical adapters of the interrogator or uncove...

Страница 14: ...product safety and electromagnetic compatibility according to the following Directives S Low Voltage Directive LVD 2014 35 EU Electrical Safety S Electromagnetic Compatibility EMC Directive 2014 30 EU...

Страница 15: ...public 15 3 Operation 3 1 Connectors 3 1 1 Standard Front view Back view Fig 3 1 The connectors and buttons on Fig 3 1 are 1 Optical Output Connectors 2 ON OFF Button 3 Power Connector 4 Ethernet Con...

Страница 16: ...1 2 Rack Mountable Front view Back view Fig 3 2 The connectors and buttons on Fig 3 2 are 1 ON OFF Button 2 POWER and STATUS LEDs 3 Optical Output Connectors 4 Power Connector 5 Electric fuse 6 Safet...

Страница 17: ...ptical connectors num ber 1 on Fig 3 1 exemplifies FC APC connectors Attention should be paid to the cleaning of the optical connectors A dirty connector can compromise the mea surement and will degra...

Страница 18: ...sive but the optoelectronic module is still warming up After approximately 90 seconds it should stay on per manently This means that the interrogator is able to measure Status LED Blinking 2 Hz Status...

Страница 19: ...s Fig 3 3 If for some reason the 6 seconds are exceeded the user can release the button before 10 seconds are reached and the interrogator will remain ON Fig 3 4 WARNING If the ON OFF button is presse...

Страница 20: ...uter the PC network 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 same subnet as the default for the interro...

Страница 21: ...Operation FS22 SI A4249 8 0 HBM public 21 Fig 3 5 Select the Internet Protocol TCP IP and click on the button Properties Fig 3 6...

Страница 22: ...Operation 22 A4249 8 0 HBM public FS22 SI Fig 3 6...

Страница 23: ...Operation FS22 SI A4249 8 0 HBM public 23 Set the IP address and the subnet mask as in Fig 3 7 Fig 3 7 Press OK...

Страница 24: ...ds When the button is being pressed for 10 seconds the POWER LED blinks 3 times and goes OFF At this moment the ON OFF button can be released and the reset of IP address will happen POWER LED blinking...

Страница 25: ...system can be as simple as a single interrogator or a bit more complex with combined inter rogators with the same or different sampling rates and interrogators combined with other equipment For the u...

Страница 26: ...hybrid measurement system is a system composed by different equipment types and technologies that can be operated with different sampling rates Taking the exam ple of HBM families a hybrid system coul...

Страница 27: ...ling time to achieve the best syn chronism possible The following features for NTP synchronization are avail able Number of devices to be synchronized Unlimited Synchronization accuracy 10 s to 10 ms...

Страница 28: ...can be fully controlled using standard SCPI syntax com mands for a complete command list please refer to sec tion 5 1 Communication Protocol Syntax on page 51 Using the Provided Drivers These drivers...

Страница 29: ...tate allows continuous wave length acquisition over all optical channels and also per forms continuous OSA trace acquisition at 1 S s The scheduled acquisition state allows periodic data acquisition w...

Страница 30: ...mands for different 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 repl...

Страница 31: ...MPle ACQUisition SCHEdule SAMPle S ACQUisition WAVElength CONTinuous NTP Sync STARt ACQUisition ENGIneering CONTinuous NTP Sync STARt MEMOry LIST DIREctory MEMOry RECALL DATA YYYY MM DD MEMOry DELEte...

Страница 32: ...CHAN nel C T ACQUisition CONFiguration RATE ACQUisition CONFiguration RATE R ACQUisition CONFiguration RANGe WAVElength C ACQUisition CONFiguration RANGe WAVE length C NR MIN MAX MIN MAX ACQUisition C...

Страница 33: ...neering CONTinuous STARt ACQUisition WAVElength CONTinuous NTP Sync STARt ACQUisition ENGIneering CONTinuous NTP Sync STARt The continuous acquisition start commands can only be executed in the ready...

Страница 34: ...FS22 Industrial BraggMETER SI interrogator only replies to the commands IDENtification STATus Information The interrogator will only answer when the STATUS LED is already blinking at 1 Hz see section...

Страница 35: ...in sleep mode when a power short age occurs scheduling will not resume upon power up Default Network Properties The default network properties are 10 0 0 10 255 0 0 0 0 0 0 0 Whenever there is the nee...

Страница 36: ...engths corresponding to all standard HBM FS wavelengths The number of sensors in a channel can vary if there is previ ous knowledge about the spectral range the sensors will cover The major concern is...

Страница 37: ...ength 0 that depends only on the measurand This means that with this technology there is no need for recalibrations every time the system is shut down The FS22 Industrial BraggMETER SI is a ruggedized...

Страница 38: ...are applicable to this equipment only 4 2 1 Wavelength The Wavelength value corresponds to the wavelength at the peak of the fiber Bragg grating reflection spectrum commonly referred as Bragg waveleng...

Страница 39: ...in nm Fig 4 3 4 3 Measurement Methods BraggMETER interrogators incorporate two distinct mea surement methods The Conventional in which a global threshold is considered for the detection and measure me...

Страница 40: ...considered power level for the FBG peak computation so that side lobes and ground noise are disregarded Although it is considered an expedited way of performing measurements the use of this method sh...

Страница 41: ...d to the peak on each sensor s configurable range refer to Fig 4 5 As in the conventional measuring method the threshold value corresponds to the considered power level for the FBG peak computation an...

Страница 42: ...suited to overcome the limitations found in the con ventional methods where low and high reflectivity FBGs coexist and signal losses are often a problem SPD therefore improves the stability and accura...

Страница 43: ...ctors are cleaned prior to any connection If not dust and moisture can be deposited in the interrogator adaptor and this will compromise measurements On Fig 4 6 a picture of a magnified connector is p...

Страница 44: ...Measuring 44 A4249 8 0 HBM public FS22 SI Wavelengthin nm Power clean connector trace dirty connector trace dynamic range reduction Fig 4 7...

Страница 45: ...nterrogator adapter use an appropri ate cotton swab there are several cleaning swabs in the market frequently used for telecom embedded in iso propyl alcohol Insert it in the optical adapter as in Fig...

Страница 46: ...t may occur that the interrogator does not find any sen sor on an array even if connections were performed cor rectly One of the reasons may be the excess of reflected light saturating the detectors W...

Страница 47: ...n a series the sensors that are after the fault may disappear from the optical spectrum and may not be detected There may also be the case that the fiber is cut but not completely spread apart e g the...

Страница 48: ...49 8 0 HBM public FS22 SI Wavelengthin nm Power Wavelength in nm Wavelength in nm Power Power Fiber cut Initial Broken Fiber Fabry P rot Broken and Missaligned Fiber Continuous Fiber Broken but Aligne...

Страница 49: ...ed to the 100 240 V power line meaning that it has no external pro tection Replaceable fuses are available on the interroga tor s back side next to the power connector number 5 in Fig 3 2 To replace t...

Страница 50: ...format of the interrogator 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 in...

Страница 51: ...II string with arguments sepa rated by and terminated with the Line Feed and Carriage Return characters End of Line Fig 5 1 Commands for the Industrial BraggMETER SI are sent by port 3500 All commands...

Страница 52: ...nt Valid Sampling Rates 1 S s NR Number of Ranges Integer RN Range Number Integer From 1 to NR Min Max Range limits Interval Min Floating point From 1500 00 to 1600 00 Max Floating point From 1500 00...

Страница 53: ...does not exist Check if the spelling is correct NACK COMMAND NOT ACCEPTED AT CURRENT STATUS It is not possible to execute the command sent at the current status Ask the current status of the interroga...

Страница 54: ...mber and Date Example Command IDEN Answer ACK HBM FiberSensing FS22SI v3 0 046 840 200 312 20150202 STORe Stores the current threshold values of all channels to the configuration file Once the interro...

Страница 55: ...YYYY MM DD 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 th...

Страница 56: ...and host clock Jitter time difference in milliseconds between 2 samples Example Command SYST NTPS Answer ACK 1 0 489 0 345 SYSTem IPADdress I I I I I I I I I I I I I I I I Sets the IP address the sub...

Страница 57: ...sition 4 scheduled acquisi tion 5 warming up Example Command STAT Answer ACK 1 5 1 5 Acquisition Commands Free Acquisition ACQUisition STARt Starts the acquisition of the fiber Bragg grating sensors i...

Страница 58: ...run the STORe command Example Command ACQU CONF THRE CHAN 2 20 Answer ACK ACQUisition CONFiguration THREshold CHANnel C Queries the threshold value for the peak detection algorithm in the C channel of...

Страница 59: ...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 13 1544 13 1546 13 ACQUisition CONFiguration RANGe...

Страница 60: ...sition CONFigura tion RANGe WAVElength C NR MIN MAX MIN MAX com mand Note The central wavelengths and formulas shall be sorted by wavelength in ascending order Note The variable x is used in the formu...

Страница 61: ...te It is available only in state 2 Example Command ACQU CONF RANG DELE A Answer ACK ACQUisition CONFiguration RANGe ENABle Enables the use of Ranges Measurement method changes from Conventional to Sma...

Страница 62: ...rrogator is operating with the Smart Peak Detec tion SPD Method acquires the engineering values accord ing to the range formula FML in the C channel of the FS22 When the interrogator is operating with...

Страница 63: ...ing the power of the wavelenghts in the 1500 1600 nm range equally spaced by 5 pm Example Command ACQU OSAT CHAN 1 Answer ACK 41 064 40 965 40 719 40 420 40 116 39 848 39 651 39 574 39 62 4 39 755 39...

Страница 64: ...sponding data is received through port 3365 in binary format The answer is a big endian binary stream rep resenting a double precision 8 bytes array with 20001 points times the number of optical chann...

Страница 65: ...ata 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 wavelengths in growing order of wavelength separated by from...

Страница 66: ...s sent via 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 grow ing or...

Страница 67: ...s sync 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...

Страница 68: ...Remote Communications 68 A4249 8 0 HBM public FS22 SI Example Command ACQU WAVE CONT NTPS STAR Answer Port 3500 ACK Port 3365 Fig 5 2...

Страница 69: ...bytes sync 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...

Страница 70: ...Remote Communications 70 A4249 8 0 HBM public FS22 SI Example Command ACQU WAVE CONT NTPS STAR Answer Port 3500 ACK Port 3365 Fig 5 3...

Страница 71: ...data recording have been selected on the same day see section Scheduled Acquisition on page 71 Example Command ACQU SAVE CONT STAR Answer Port 3500 ACK Scheduled Acquisition ACQUisition SCHEdule STARt...

Страница 72: ...duled acquisitions on the FS22 The period is defined as a time interval with the format HH MM SS The minimum period is 5 seconds and maxi mum period is 23 hours 59 minutes and 59 seconds Note the defi...

Страница 73: ...nable number of samples is 1 and the maximum is 86399 Note the defined number of samples must never be higher than the number of seconds available with the defined schedule period Example Command ACQU...

Страница 74: ...ferred The command does not delete down loaded 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 BraggMONI...

Страница 75: ...FS22 11 010 120 FS22 Industrial BraggMETER SI Rack Mountable K FS22 13 010 120 FS22 Industrial BraggMETER SI Rack Mountable K FS22 01 010 420 FS22 Industrial BraggMETER SI Standard K FS22 03 010 420 F...

Страница 76: ...rsions or Windows 10 32 Bit and 64 Bit versions S Main memory RAM at least 512 Mbyte for Windows XP at least 1 024 Mbyte for Windows Vista at least 2 048 Mbyte for Windows 7 or higher S Graphics card...

Страница 77: ...creen video adapter Super VGA resolution 1024x768 6 2 2 Software Installation To install HBM FiberSensing BraggMONITOR SI Soft ware on a PC please follow the described steps Insert the provided disk w...

Страница 78: ...g the application Information Using windows display settings with the size of text not set to 100 might compromise the correct visualization of BraggMONITOR SI software 6 2 3 Software Uninstall To uni...

Страница 79: ...ame subnet To configure your personal computer so that it is on the same subnet as the default for the interrogator proceed as described on section 3 5 1 Network Properties 6 3 2 Regional Settings Whe...

Страница 80: ...dministrator The BraggMONITOR SI Software should run with full administrator privileges To have these privileges when the operating system is Windows Vista or higher the user shall right click the Bra...

Страница 81: ...SI A4249 8 0 HBM public 81 To configure the application to always open with Adminis trator privileges right click on the software icon and select Properties Compatibility Check the box Run this progra...

Страница 82: ...SI Software graphical interface is divided into two different areas Fig 7 1 1 General Bar 2 Graphical Area Fig 7 1 7 1 General Bar The General Bar number 1 in Fig 7 1 is where the main acquisition act...

Страница 83: ...ror messages For attention error messages are shown in orange see Fig 7 3 Fig 7 2 Current status information Fig 7 3 Error message 7 1 1 Date and Time The BraggMONITOR SI Software uses by default the...

Страница 84: ...Application folder Close the BraggMONITOR application Open and edit the Config ini file Change the parameter UseUTC 1 to UseUTC 0 and save the file Fig 7 4 Run the BraggMONITOR application as an admi...

Страница 85: ...BraggMONITOR SI User Interface FS22 SI A4249 8 0 HBM public 85 Fig 7 5 To adjust the time zone chose the Change time zone button Fig 7 5 Fig 7 6...

Страница 86: ...l Time chose the Change date and time button Fig 7 5 Fig 7 7 7 1 2 Connecting to the Interrogator The first action to perform before starting an acquisition is to establish a connection between the in...

Страница 87: ...which the connection will be established see Fig 7 9 This popup window also allows one to search for FS22 interrogators in the net work To perform this search the search button shown with number 1 in...

Страница 88: ...View and Numerical View Tabs the start button number 2 in Fig 7 8 becomes active as shown in Fig 7 11 Fig 7 11 Press start button to start acquisition This will start the acquisition and representati...

Страница 89: ...ation etc However a sen sor configuration must be defined Saving Data To save data press the save button number 3 in Fig 7 8 The data will be saved in the path specified in the field Data Folder on th...

Страница 90: ...a is organized in columns see Fig 7 15 The first row is a header indicating how many samples were acquired per second The second row is a header con taining the labels of each column Fig 7 14 1 1st co...

Страница 91: ...xcel Work book 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 Then it is necessary to complete text import wiza...

Страница 92: ...BraggMONITOR SI User Interface 92 A4249 8 0 HBM public FS22 SI Fig 7 17 Fig 7 18...

Страница 93: ...BraggMONITOR SI User Interface FS22 SI A4249 8 0 HBM public 93 Fig 7 19 Fig 7 20...

Страница 94: ...1 4 Software and Interrogator Information General information about the software and the inter rogator can be displayed by pressing the info button number 4 in Fig 7 8 7 1 5 Exit Application To exit B...

Страница 95: ...ues can be found over time number 1 in Fig 7 22 It is possible to enable and disable the graphical repre sentation of one or more sensors by checking and unchecking the check boxes number 2 in Fig 7 2...

Страница 96: ...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 zoo...

Страница 97: ...s shown in Fig 7 23 For each channel there are two col umns one with the name of the sensors and another with wavelength shift in nm relative to the central wave length or engineering values units def...

Страница 98: ...ogator The full spectrum contains 20001 data points corresponding to the reflected optical power in dBm from 1500 nm to 1600 nm with a 5 pm sampling resolution number 1 in Fig 7 24 Fig 7 24 The spectr...

Страница 99: ...e FBG sensor will be detected When the ranges are OFF see Fig 7 25 the spectral graph will contain the optical spectrum of the selected channel and an horizontal line representing the threshold level...

Страница 100: ...lso presented number 1 in Fig 7 26 in which the lower Min nm and upper Max nm limits of each sensor range are displayed These limits can be manu ally edited here by the user by clicking on each box to...

Страница 101: ...ton number 5 in Fig 7 24 can be used to return the threshold value that is stored for the selected optical channel on the interrogator The threshold value can be defined from 0 to 60 dB and correspond...

Страница 102: ...ctionality is used to detect the FBG sensors and to store the resulting configuration when its result is successful Upon an autoscan Sensor Names are set by default as CHX SABC where X is the optical...

Страница 103: ...nges maximum and minimum wavelengths will be set as the detected central wavelength of the FBG displayed on the Wavelengths table as in number 12 in Fig 7 24 plus minus half the range width Maximum an...

Страница 104: ...ooming In is only possible over the horizontal axis By pressing the left mouse while moving the mouse to the left or right a Zoom In section will appear Fig 7 28 Once the desired zoom in section is de...

Страница 105: ...elect the file path 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 automatically retur...

Страница 106: ...gMONITOR SI User Interface 106 A4249 8 0 HBM public FS22 SI Fig 7 30 The save image button allows one to save a bmp file containing an instant capture of the displayed spectral graph number 9 in Fig 7...

Страница 107: ...ors configuration To accomplish this step correctly sensors calibration sheets might be needed Fig 7 31 Clear configuration If an old configuration is set it is possible to clear it and start a new co...

Страница 108: ...elds corresponding to that particular sensor The user can also delete a single sensor or all the sensors in an optical channel either selecting a sensor or the channel respec tively and then pressing...

Страница 109: ...ned for that peak Do Do not 11 3 11 3 11 3 x 11 3x 11 3 x 2 105 4 x 30 11 3 x 2 105 4 x 30 Tab 7 1 Test configuration Test Configuration number 3 in Fig 7 31 allows the user to check the current value...

Страница 110: ...Consecutive files will be created every time the defined time is achieved The duration of the files can be set to 1 min 5 min 10 min 15 min 30 min 1 Hour 2 Hours 3 Hours or 6 Hours Save and Load confi...

Страница 111: ...see Opening Data in Micro soft Excel section on page 91 and saved as txt exten sion file after editing In the case of a configuration with ranges ON for each channel there are 5 columns Name number 1...

Страница 112: ...Fig 7 35 Fig 7 35 Define the new IP Address number 2 in Fig 7 35 The Subnet Mask number 3 in Fig 7 35 will be automatically defined according to the IP Address The Gateway is 0 0 0 0 by default and i...

Страница 113: ...etails To view the file list and download the data stored in the internal memory press the memo data button on the number 5 in Fig 7 31 This button launches a pop up see Fig 7 36 Once a file is select...

Страница 114: ...emote Communications on page 51 Commands are inserted on the command field number 2 in Fig 7 37 and sent by pressing Enter on the keyboard or the send cmd button number 3 in Fig 7 37 The interrogator...

Страница 115: ...leaves SCPI Interface tab interrogator status is changed and Scheduled and Continuous acquisitions are disabled In order to keep the current interrogator status the user shall not select other tab th...

Страница 116: ...www hbm com HBM Test and Measurement Tel 49 6151 803 0 Fax 49 6151 803 9100 info hbm com measure and predict with confidence A4249 8 0 7 2002 4249 HBM public...

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