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DELTASENS

USER MANUAL

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Summary of Contents for DELTASENS

Page 1: ...DELTASENS USER MANUAL ...

Page 2: ...1 VU University Campus W N Building room O 236 De Boelelaan 1081 1081 HV Amsterdam The Netherlands SHIPPING ADDRESS Optics11 De Boelelaan 1081 1081 HV Amsterdam The Netherlands COMPANY INFORMATION Optics11 B V KvK CC 52469417 VAT NL850459734B01 Amsterdam NL Please see our website for more information about our products ...

Page 3: ...P address 10 1 2 2 Setting the SLD power 12 1 2 3 Define sensors 15 Description of the Software 17 1 3 Home panel 17 1 4 Amplitude Spectral Distribution panel 21 1 5 Additional pop up windows 23 1 5 1 Sensor select 23 1 5 2 Data logging settings 25 1 5 3 Events 26 1 6 Settings panel 27 1 7 Data Viewer panel 32 2 Technology Principle 34 2 1 Principle of operation 34 2 2 Correction spectra 34 2 3 In...

Page 4: ...New document Version 0 2 Updated June 25 2018 A Sielecki Update Version 0 3 Updated July 09 2018 A Sielecki Update Version 0 4 Updated July 12 2018 A Sielecki Update Version 1 0 Updated July 31 2018 M Jacobs Released Version 1 1 Updated March 11 2019 N Piva Update Version 1 2 Updated May 16 2019 N Piva Update ...

Page 5: ...uses there are no user serviceable parts in this product All statements regarding safety of operation and technical data in this instruction manual will only apply when the unit is operated correctly The unit is equipped with a cord having an equipment grounding conductor and grounding plug Before applying power to the instrument make sure that the plug is connected into a properly installed and g...

Page 6: ...ther with a brief introduction to the software and its first configuration steps The second section includes a more detailed description of the software and all its functionalities In the third section a brief overview of the capabilities of the system and its working principle are presented The last section includes the technical specifications of the instrument ...

Page 7: ... on it 1 1 1 DeltaSens operating principle DeltaSens is a stand alone system that simultaneously interrogates multiple Fabry Pérot FP sensors connected through an optical fiber network By using a single read out to measure multiple transducers DeltaSens provides a cost effective sensing solution without compromising on performances The distance between the sensors and the read out can vary from ce...

Page 8: ...ernet port for computer connection USB type A port for debug connection RS232 port for debug connection 8 BNC connectors for analog outputs 3 BNC connectors for external clock and trigger DB 9 connector for 4 additional analog outputs The device must be connected to the power supply with the provided power cable and to a computer or LAN with the provided Ethernet cable or equivalent ones The senso...

Page 9: ...d analyse them Before connecting the interrogator to the computer please install the accompanying software and necessary drivers To configure the interrogator connect it to the power supply and to the computer or your LAN network with the provided cables After turning the device on it will take it around 1 minute to boot and load the previous configurations After booting the device will start oper...

Page 10: ...ess set by the user If no unit is found at that address the IP Discovery tool will appear to help the user identifying the unit IP address see Figure 3 Figure 3 IP Discovery tool Configured IP last IP address set by the user Available NICs IP interface controllers IPs available in the network IP to scan allows to specify the range of IP addresses to scan to search for the unit Port port used to tr...

Page 11: ...take some minutes If the tool successfully locates the DeltaSens unit the Box IP indicator will be updated with the discovered IP address By clicking OK the user can exit the tool and store this address into the software settings and start interfacing with the unit The IP address used to communicate with the DeltaSens unit can also be set manually by accessing the Dev Mode menu of the Settings pan...

Page 12: ...se parameters The Auto power tool settings can be found under the AFE CTRL submenu of the Dev Mode menu Make sure that the Auto power is enabled as shown in Figure 6 The default settings are meant to ensure a fast and effective tuning and simplify the unit setup refer to following section of these manual for a detailed description of them If enabled the Auto power tool will run automatically every...

Page 13: ...ng such procedure manually Remember to disable the Auto power tool on the AFE CTRL tab of the Dev Mode menu before performing the following procedure To display and keep track of the raw signal during the tuning process open the RAW data submenu of the Time domain menu and click Time domain On the Settings panel the user can control the light output power Under the SLD light source submenu set the...

Page 14: ...14 optics11 com Figure 6 AFE CTRL submenu Figure 7 Raw time domain signal ...

Page 15: ...the sensor and it is assessed during the sensor calibration o Offset should be set to 0 as default o Phase IPM defines range and resolution of the sensor It should be kept at 0 by default more detailed description is provided in section 1 6 o Type informative description of the sensor o Unit unit of measurement to display in the graphs of the demodulated signal e g g for accelerometers To save the...

Page 16: ...indows The sensor signal can be displayed by clicking the Add graph button on the right side of the Home panel and by selecting the sensor from the mouse over menu on the left side of the graph A more detailed description of the software and its features is provided in the next section of this manual a b c ...

Page 17: ... the software is properly connected with the DeltaSens interrogator On the right are located several action buttons Sensor select opens a window that allows to define and select sensors edit their parameters and visualize the spectral signal to choose the proper cavity length of each one It is described more in detail in section 1 5 Zero offset in case of strong solicitation of the sensor out of t...

Page 18: ... to add a new graph to the Home and ALD panels The software can display up to 12 graphs at the same time and each graph can display all the currently demodulated sensors or part of them depending on the user needs Tile graphs automatically arranges the currently displayed graphs in a default tile pattern Pause graphs freeze the graphs to allow the user to zoom and look into the data This action bu...

Page 19: ...ure 13 When created the graphs are automatically arranged by the software in a tile pattern 3 x 1 in this case On the top right of each graph the user can find several control buttons Allows the user to unpin the graph from the Home ALD panel and to manipulate it Allows the user to close a specific graph Allows the user to activate the auto scale of each axis Allows to browse the graph data by zoo...

Page 20: ... a filter approaching and ideal behaviour Cut off frequencies controls the cut off frequencies of the filter If the Filter type is set to High pass or Low pass the second frequency control is automatically disabled and greyed out As mentioned before note that each signal of each graph can be filtered independently This allows for example to display at the same time in two different graphs the pris...

Page 21: ... set what signals to display and add a filter in each graph These options are available on the mouse over menu on the left of the graphs There are some additional controls on the right of each graph that allow to control the displayed ASD signal Window selection allows to choose which window is used to calculate the Fourier Transform The Hanning window is selected by default but other options are ...

Page 22: ...ording to the following equation 𝑌𝑖 𝑁 1 𝑁 𝑌𝑖 1 1 𝑁 𝑋𝑖 where 𝑋𝑖 is the result of the analysis performed on the 𝑖th block 𝑌𝑖 is the result of the averaging process from 𝑋1 to 𝑋𝑖 𝑁 𝑖 for linear weighting and 𝑁 is a constant for exponential weighting 𝑁 1 for 𝑖 1 source National Instruments Avg restart allow to restart the averaging starting from next sample The last control button allows to switch the...

Page 23: ...icking one of the listed sensors the Sensor select window will expand showing the cavity size spectrum as shown in Figure 15 The extended window allows to set the proper cavity size of each sensor to demodulate its signal The nominal cavity size of each sensor is provided on its accompanying datasheet However depending on environmental conditions the real cavity size might shift from the nominal v...

Page 24: ...to the sensor cavity size use the cursor to move the yellow line indicator over this peak and click Confirm at the bottom right of the window The thick boxes on the left of each sensor allow to set of which sensors the unit should demodulate the signal The settings are update to the unit after clicking OK Figure 15 Extended sensors select window ...

Page 25: ...ous saving mode The single mode will record the signals for a given timespan and save the data in a single file The acquisition automatically stops when the set timespan is elapsed The continuous mode will keep recording the signals till the user stops the acquisition by pressing again the Record action button The software will create automatically multiple concatenated files This mode allows to r...

Page 26: ...logging After pressing Record the software will start saving the acquired data when the delay timespan is elapsed Sensors Presents a list of the currently demodulated sensors It is possible to choose of which sensors the software will record the signal 1 5 3 Events Figure 17 Events window The Events window presented in Figure 17 shows log of all the events occurred in the software and all the comm...

Page 27: ...on for saving log events file Current Spectrum o Dark Default location to save and load dark spectrum file o Reference Default location to save and load reference spectrum file SLD Light Source o Enable Button to turn on and off the SLD o Current Value of the SLD source current o Temperature Set a temperature value for the SLD o Display max Button to enable the display of the maximum value of the ...

Page 28: ...perly acquire the dark spectrum the SLD should be turned off To acquire the reference one the reference fiber should be connected to the unit and the SLD source current properly set o Get Uploads the chosen spectrum to the software o Display Displays currently loaded acquired spectrum o Set Sets selected spectrum in the device Sensor List Displays the full list of configured sensors along with the...

Page 29: ... range the Autozero function will re center automatically the sensor signal around 0 The threshold that triggers the Autozero function can be set by the user using the control Autozero threshold The Autozero function is triggered only when the signal falls over such threshold for longer than a given timespan which can be set by the user using the control Autozero duration ms This function can be t...

Page 30: ... 100 µG V o User offset Allows to set a custom offset to the analog output It can be used to compensate a drift of the signal or to center a signal in the analog output range It is set automatically for a given sensor when the Compensate zero button is pressed o User IPM As described in User gain this parameter sets correct scaling and range of the analog output It should be used in combination wi...

Page 31: ...31 User Manual Table 1 Suggested User Gain and User IPM values SCALING VALUE HALF SCALE USER GAIN USER IPM 10 nm V 100 nm 2 470 3 100 nm V 1 µm 1 976 6 1 µm V 10 µm 1 581 9 ...

Page 32: ...r consists of two graphs the top one displays the acquired signal over time and the bottom one the frequency spectrum of the signal The frequency spectrum is calculated over a time window of the recorded signal Such window can be modified by the user by moving the two yellow bars located on the top graph This allows the user to calculate and analyse the signal frequency spectrum with very high res...

Page 33: ...33 User Manual controls are located on the top of the first graph Filters can be set independently for each signal displayed by the data viewer ...

Page 34: ...ch represent the size of the cavity Such peaks are then traced to measure the changes of each cavity size By using an innovative algorithm this peak can be traced with an exceptional resolution down to single picometers and multiple sensors with different cavity sizes can be interrogated simultaneously using not only the same interrogator but the same fiber They can be connected in parallel or ser...

Page 35: ...ltaSens interrogator is the high precision spectrometer Such device is calibrated using a reference laser and its readings are compensated in the DeltaSens system considering the unit temperature Thanks to the high manufacturing standards and the inherent properties of the DeltaSens sensing method the spectrometer does not require to be calibrated granting high performance and accuracy during the ...

Page 36: ...humidity 85 non condensing Recommended warm up time 15 minutes IP rating IP52 Physical Dimensions W x H x L 444 mm x 66 mm x 306 mm 19 inch 1 5 U version available Max weight 8 kg Housing material Aluminum Input voltage 220 240 VAC 0 8A 110 120 VAC 1 6A Power consumption3 20 W Input voltage frequency 50 60 Hz Output interface Port Ethernet RJ 45 Analog BNC Fiber port FC APC 2 0 mm Narrow Key Trigg...

Page 37: ...37 User Manual Data properties Data output Digital file TDMS and analog signal 10 V Software requirements Intel Core i5 or equivalent min 4 GB RAM display resolution min 1920 x 1080 ...

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