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Viewing Events

The Events screen allows you to browse, filter, and analyze recorded events. Access it from the Events tab in the navigation sidebar.

[Screenshot: Events screen showing list of recorded events]

Event List

The Events screen displays a list of all recorded events, showing:

  • Date and Time -- When the event was triggered
  • Category -- Power, Motor, Pump, or Well
  • Parameter -- The specific parameter that triggered the event
  • Severity -- Warn or Trip level

Filtering Events

You can filter the event list by:

  • Date range -- View events from a specific time period
  • Category -- Show only Power, Motor, Pump, or Well events
  • Sort order -- Sort by date (newest or oldest first)

Event Detail View

Tap on any event in the list to open its detail view.

[Screenshot: Event detail view with waveforms]

Event Information

The top of the detail view shows the event metadata:

  • Event ID
  • Trigger timestamp
  • Event category and parameter
  • Threshold values (warn/trip)
  • Measured value at trigger
  • Event duration

Waveform Viewer

The main area of the event detail view is an 8-channel waveform viewer that displays the recorded data. This is the same oscilloscope-style view used for live monitoring, but showing the stored event data.

Key features of the event waveform viewer:

  • Scrollable timeline -- Pan through the entire recording from pre-trigger to post-trigger
  • Pre-trigger data -- See what the system was doing before the fault
  • Trigger marker -- Clear indication of the exact moment the event was detected
  • Post-trigger data -- See how the system responded after the fault
  • 8 channels -- All voltage and current waveforms are available

Reading Event Waveforms

  1. Start at the left -- This is the pre-trigger data (before the fault)
  2. Find the trigger marker -- This is where the threshold was exceeded
  3. Look for changes -- Compare the waveforms before and after the trigger
  4. Identify the root cause -- Use the waveform shape to diagnose the fault type

Exporting Event Data

Event data can be exported in CSV format for analysis in external tools (spreadsheets, MATLAB, Python, etc.). The exported file contains time-stamped samples for all 8 channels.

Event Data Storage

Event files are stored on the device at:

/home/root/event_recordings/

Each event consists of a .bin file (waveform data) and a .json file (metadata). Files can be transferred off the device via USB or network for archival.

Storage Note: Each data packet is approximately 19.7 KB in binary format. A typical event with 10 pre-trigger packets and 10 post-trigger packets uses approximately 400 KB of storage.