Optics11 DELTASENS User Manual
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Optics11 DELTASENS User Manual

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USER MANUAL
DELTASENS

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Summary of Contents for Optics11 DELTASENS

  • Page 1 USER MANUAL DELTASENS...
  • Page 2 VISITING ADDRESS Optics11 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 optics11.com...

  • Page 3: Table Of Contents

    CONTENTS Revision history Safety Introduction 1. Installation 1.1. DeltaSens system overview 1.1.1. DeltaSens operating principle 1.1.2. Connections 1.2. Starting the software 1.2.1. Setting the unit IP address 1.2.2. Setting the SLD power 1.2.3. Define sensors Description of the Software 1.3.

  • Page 4: Revision History

    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 optics11.com...

  • Page 5: Safety

    SAFETY The DeltaSens interrogator is equipped with a class 1M laser device. The infrared laser light is coupled out via the optical fiber connector on the front panel. Do not stare into the laser beam or view it directly with optical instruments.

  • Page 6: Introduction

    INTRODUCTION This document describes the DeltaSens system installation and usage. The first section describes system connections and installation, together 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.

  • Page 7: Installation

    1.1. DeltaSens system overview The central element of the DeltaSens system is the interrogator unit. It acquires the optical signal from the array of sensors, processes it and provides the user with both analog and digital outputs to analyze it.

  • Page 8: Connections

    1.1.2. Connections The DeltaSens unit houses an optical fiber connector on the front panel and several electrical connectors on the rear panel. The front panel connector is a FC/APC socket used to connect the sensing fiber. To connect multiple sensors to a single interrogator unit, one or more fiber splitters might be needed depending on the use case.
  • Page 9 Such configurations can be edited only by connecting the unit to a computer with the DeltaSens software installed on it. The software also allows to control the measurement parameters, acquire and record signals and analyse them.

  • Page 10: Starting The Software

    Port – port used to try to ping with the unit, should be set to 10002 as default. • Timeout – how long the software will wait for a response when pinging an IP address. • Box IP – IP address at which the DeltaSens was found by the “Discovery Tool”. optics11.com...
  • Page 11 The IP address used to communicate with the DeltaSens unit can also be set manually by accessing the “Dev. Mode” menu of the “Settings” panel. The user can manually enter the IP address and ports used to communicate with the DeltaSens unit under the “ZeroMQ”...

  • Page 12: Setting The Sld Power

    If enabled, the Auto-power tool will run automatically every time the user opens the "Sensors select” menu of the “Home” panel and clicks “OK”. The “Sensors select” menu allows the user to define the sensors connected to the unit and edit their parameters to properly decode their signal. Before doing optics11.com...
  • Page 13 this, the Auto-power tool must be run by opening the “Sensors select” menu and clicking OK. A popup window will appear to show the tuning progress and automatically close when the tuning is completed. It is possible to check if the Auto-power tool correctly tuned the SLD power and the spectrometer conversion efficiency by analysing the live raw-data acquired by the spectrometer.
  • Page 14 Figure 6: AFE.CTRL submenu Figure 7: Raw time domain signal optics11.com...

  • Page 15: Define Sensors

    1.2.3. Define sensors The last step required to start measuring and acquiring data with the DeltaSens system is the definition of the sensors connected to the unit. To properly demodulate their signals, it is necessary to define each sensor and set its cavity size on the “Sensors Select” menu of the “Home” panel. If the interrogator is delivered together with a set of sensors, their settings will be already stored into the unit.
  • Page 16 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. optics11.com...

  • Page 17: Description Of The Software

    1.3. Home panel Figure 9: DeltaSens Home panel Figure 9 presents the DeltaSens software “Home” panel. On the top bar there are 4 buttons to browse through the four main panel of the software: Home, Amplitude Spectral Density (ASD), Data Viewer and Settings.
  • Page 18 Events – opens the events log window which lists any command sent to the box as well as warnings and errors. If there is any warning listed in the log flow, the “Event” button will turn orange and red in case of an error. Figure 10: Home panel displaying a graph optics11.com...
  • Page 19 Figure 11: Home panel displaying multiple graphs In Figure 11 is shown a typical use case of the software. The system is acquiring signals from 3 different sensors and displaying them in three different graphs on the “Home” panel. It is possible to select what signals to display on a graph by selecting the desired sensors from the mouse-over menu on the left side of each graph as shown in Figure 13.
  • Page 20 When a filter is applied to a sensor, a string indicator “(S fil)” will appear on the right of the sensor name on the mouse-over menu. Note that the filters are applied only to the signal displayed by the software. The signals recorded into files and the analog outputs ones are always pristine signals. optics11.com...

  • Page 21: Amplitude Spectral Distribution Panel

    1.4. Amplitude Spectral Distribution panel Figure 12: ASD panel displaying multiple graphs The “ASD” panel is presented in Figure 12. This panel reproduces the same graphs and tile structure of the “Home” panel presented before. In this case the graphs display the Amplitude Spectral Density of the signals instead of their real time value.
  • Page 22 (�� = 1 for �� = 1). (source: National Instruments). Avg restart allow to restart the averaging starting from next sample. The last control button allows to switch the Y axis scale between linear and logarithmic. Figure 13: Home panel displaying mouse-over sensor select and filtering menu optics11.com...

  • Page 23: Additional Pop-Up Windows

    1.5. Additional pop-up windows 1.5.1. Sensor select Figure 14: Sensors select window Figure 14 shows the Sensors select window. As described in the previous section, it allows to define new sensors, set their parameters and choose which of the defined sensors the unit should demodulate.
  • Page 24 “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 optics11.com...

  • Page 25: Data Logging Settings

    1.5.2. Data logging settings Figure 16: Data logging settings The “Data logging” menu, presented in Figure 16, allows the user to edit the data logging settings. Such settings will be applied every time the user starts recording a signal by pressing the “Record” action button on the “Home”...

  • Page 26: 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 commands sent to the box. It also shows warning and errors when software is not working as intended. optics11.com...

  • Page 27: Settings Panel

    1.6. Settings panel Figure 18: Settings panel In Figure 18 is presented the “Settings” panel. Here the user can edit and update most of the software and interrogator options. • Disk Locations o Results – Default location for saving measurement files. o Events –...
  • Page 28 IPM=1 results in range of 32768 and resolution of 1.5 x 10 and IPM=5 results in range up to 2048 and resolution down to 1 x 10 . IPM scale works independently of signal gain and applies only to the displayed signal. optics11.com...
  • Page 29 “Home” and “ASD” panels, the HP filter function also affects the recorded data. o Autozero – Allows to enable the Autozero function integrated in the DeltaSens unit. In case of strong solicitation of the sensor (out of the dynamic range) the DeltaSens decoding system could reinitiate the signal acquisition with an unwanted offset.
  • Page 30 The analog signal is generated by the DeltaSens DAC with a maximum range of (-10 V, 10 V) and 16-bit resolution. The scale from default units to nm or other units must be defined with user gain and User IPM o Name –...
  • Page 31 Table 1: Suggested User Gain and User IPM values SCALING VALUE HALF SCALE USER GAIN USER IPM 10 nm/V 100 nm 2.470 100 nm/V 1 µm 1.976 1 µm/V 10 µm 1.581 User Manual...

  • Page 32: Data Viewer Panel

    On the top right of the graph are located the controls that allows to scale and manipulate the displayed signals and on the top left corner the user can choose which sensor signals to display. The filtering options described in the previous section are available also for data imported from a file. The optics11.com...
  • Page 33 controls are located on the top of the first graph. Filters can be set independently for each signal displayed by the data viewer. User Manual...

  • Page 34: Technology Principle

    2.1. Principle of operation DeltaSens uses interferometry to interrogate multiple Fabry-Perot cavities. The heart of the system consists of a broadband light source (SLD) and a spectrometer. The light from the SLD is coupled in the optical fiber and then travels to the sensor. In the low finesse FP cavity, the light is reflected from the fiber end (reference beam) and from a transducing element (signal beam) such as a cantilever, a membrane, or another fiber.

  • Page 35: Internal Calibration Method

    The main sensing component of the DeltaSens 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 whole product lifetime.
  • Page 36 Fiber port Trigger interface 5V TTL, rising edge Trigger input /output The final noise floor of the system is a combination of the readout and the sensor. Independent to the amount of sensors connected to the readout At room temperature optics11.com...
  • Page 37 Data properties Data output Digital file (TDMS) and analog signal (±10 V) Intel Core i5 or equivalent, Software requirements min. 4 GB RAM, display resolution min. 1920 x 1080 User Manual...

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