6.3 Reviewing operational data

In the Graphs card, the 2D and waterfall plots are visualized. In this card it is also possible to playback audio and create segments.

Plotting operational data

Operational data can be plotted in either 2D (time or spectrum) or waterfall plots. To plot them, right-click on the operational data of interest, select Plot and choose the type of graph desired. The plots will appear in the Graphs card on the right. For additional information and tips on plotting, see the section on 4 Plotting.

Multiple operational data can be plotted in the same panel if they are of the same type (time series or frequency blocks). This is done by dragging and dropping one operational file onto an existing plot in the Graphs card. If multiple operational data are selected while plotting, the plots will appear in the Graphs card in separate panels.

If the data has only been imported but not yet loaded, then plotting the data will automatically load it as well.

3D Viewer and Operational Deflection Shapes

Showing geometries in the 3D Viewer

In the 3D Viewer card, you can visualize imported geometries (see how to import geometries here). To access the 3D Viewer card in the Operational Data module, you need the src-ods license.

To visualize geometries you have to:

  1. Import a DIRAC project, including geometries.
  2. Go to the 3D Viewer card.

Displaying Operational Deflection Shapes

You can display Operational Deflection Shapes of your operational data in the 3D Viewer. To access the 3D Viewer card in the Operational Data module, you need the src-ods license.

To animate the Operational Deflection Shapes you must complete these steps:

  1. Map the channels to the Master channels.
  2. Drag and drop the desired operational dataset in the 3D Viewer.
  3. Press play.

Displaying Operational Deflection Shapes

SOURCE will only animate operational channels that are set as Masters.

Controlling Operational Deflection Shapes’ settings

When animating Operational Deflection Shapes, you can change the following settings in the taskbar:

  1. Amplitude
  2. Block
  3. Frequency

Controlling Operational Deflection Shapes’ settings

You can control the settings using keyboard shortcuts:

  • Amplitude: CTRL + +/
  • Block: CTRL + up/down arrow
  • Frequency: CTRL + left/right arrow

For 10 units increment or reduction, use the shortcut CTRL + SHIFT + key.

Creating meshes

You can create a mesh between nodes to visualize the Operational Deflection Shapes better. The mesh is formed by lines that connect the nodes.

To create the meshes, you have to complete the next steps:

  1. Display an ODS.
  2. Select the nodes you want to link in the Nodes tab of the 3D Viewer.
  3. Type L.

Creating meshes

You can edit the lines’ color in the Lines tab.

Audio playback

In the Graphs card it is also possible to play the audio of your operational data. To do so, click on the green play symbol that you can find on top of the graph. The playback cursor will appear to indicate the position of the playback in the signal and the channel is played. In the toolbar you can also pause, stop, or change the volume of the playback. It is also possible to drag the playback cursor to the left and right within the plot to play the audio at a different instance in time.

If multiple graphs are plotted at the same time, you have to choose which one to play by selecting it from the drop-down menu in the toolbar.

In the audio playback toolbar, it is also possible to set values that correspond to the maximum volume. If the Abs feature is not activated, the maximum value of the plotted channel is used as the maximum level of the audio card.

If you want to compare different datasets, this setting could be misleading because, for all of the datasets, the maximum value of the plotted curve will be set differently, making the comparison impossible. To overcome this issue, you can tick the Abs box and define the value that corresponds to the maximum volume of the audio card. This value will be used for all the datasets that are played back. This value has to be defined in linear engineering units.

Audio playback in the Operational Data module

Operational consistency

Operational consistency can be used to reveal incorrect behavior in the operational measurements. This is done by evaluating the consistency of the response data through the Virtual Point Transformation. For this reason, geometrical data of the measurement is needed. With operational consistency you can detect:

  • Overloads,
  • Non-linear phenomena,
  • Moved or loose sensors
  • Inconsistent sensor movement

To plot operational consistency, check section 4.1.

Exporting operational data

To export operational data, you must right-click on the dataset and select Export to and then choose the wanted file extension between ATFX, MAT and WAV.

Afterward, a window pops up asking if you want to export the file with the original channels or with the mapped channels only.

If you want to export a sequence, the different segments that are part of that sequence are first merged.

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