Status Dashboards


Fusion Status Dashboard

This status page allows overall assessment of the most relevant information.

 

To determine the statuses of the Fusion engine and its related processes, the user can observe the flags displayed on the Fusion Status page. The figure below shows all possible badges that can be shown on this page.

 

Status badges available on the 'Fusion Status' page of the web interface

 

  1. If 80% or more checks are passed in that period, the badge shows "Passed."

  2. If less than 80% of checks passed and at least one failed check, the badge shows "Failed".

  3. If less than 80% of checks are passed and there are no failed checks, the badge shows "No GNSS fix".

  1. The correction data status will stay blue in this stage while the Fusion init icon will remain red.
  2. At this stage, the GNSS1/2 status badges display No fix while the status flags on the top bar display the currently received signals (RTK Fix and Float). This is expected behavior when Fusion is not initialized yet.



Status badges and flags when Fusion is started

 

  1. Once Fusion is initialized, the GNSS status icon changes to stress that this status now refers to the processed GNSS signals by the internal Fusion logic.
  2. After Fusion initialization, the status bar will be updated continuously including the correction data status: The figure below shows that flags and badges are aligned and display the same status.
     

Status badges and flags when Fusion is initialized

 

IMU Convergence

The Vision Navigator requires a start-up procedure before being fully operational. Since firmware 2.102.2, users can initialize Fusion also by using the load pose feature as described in Sec. 5.1. The user must ensure the following requirements are fulfilled to
start the calibration procedure:

 

Fusion status view

 

Once fulfilled, drive approximately 2 minutes under RTK-fixed with some dynamic movement to converge the IMU biases. Perform eight figures and move back-and-forth within a 10 meters area as shown in the figure below. The gyroscope and accelerometer bias will converge to steady values with this procedure. The sensor will raise a flag once it is fully calibrated (see field #22 in the FP_A-ODOMETRY message or fields #18 and #20 in the FP_A-ODOMSTATUS message).

 

Example trajectory for the IMU calibration procedure

 

Gyroscope and accelerometer biases over time

 

On the web interface, the user can visualize the status of the calibration procedure and the IMU noise by heading to the "Status → Fusion" page. The IMU status can either be:

 

Similarly, the IMU noise indicators are either: Unknown Excessive noiseMedium NoiseLow noise

 

Keep in mind that this indicator is calculated based on the variance of the IMU measurements over a period of time. Some platforms might experience excessive IMU noise without a significant impact on performance. This indicator only informs the user of their system dynamics.

GNSS Status Dashboard

GNSS status dashboard

 

 

Correction data status table

 

 

  1. Left column: status of first GNSS receiver.
  2. Right column: status of second GNSS receiver.
  3. Status flags: these 4 icons indicate the status of the Fusion initialization, GNSS1 and GNSS2 reception, and Correction status. More information on the behavior of these status flags is described at the end of Fusion Status Dashboard .
  4. Signal levels: histogram of the number of GNSS signals and their corresponding signal levels (measured as the carrier to noise ratio in dBHz). The coloured bars represent the number of signals used in navigation and the gray ones represent the total number of signals tracked. The color scheme used for this histogram corresponds to:
  5. NTRIP correction stream stability and latency statistics: display statistics of the NTRIP correction stream. Note: The user can only rely on these values when the system time is synchronized with either an NTP server or GNSS. These statistics are calculated using only GPS MSM messages (RTCM3 message type 1074, 1075, or 1077), available only in RTCM3.2 and above. 
  6. Expert mode toggle: Display additional information in the tables.
  7. GNSS fix types: they can be one of the following:
  8. Update indicators: these indicators blink whenever the data is updated.
  9. Antenna state and power: displays antenna supervisor state (left badge) and the antenna power supply status (right badge).
  10. Baseline: Relative position (NED coordinates) from the basestation to the rover. As stated the Sensor setup requirements, we recommend the selected basestation to be less than 15 km from the rover.

 

The 'Time and date' fields display the current estimate using the solutions from each u-blox F9P GNSS receiver independently. The user should not trust these measurements when the values are in gray.

 

Input/Output Dashboard

On this page the user can see general information such as the currently installed software version, the CPU load and temperature, the internet connectivity, time synchronization, and correction status. If measurements are configured, the status of the inputted data is displayed, see the figure below.

 

Measurements Status

 

From software version 2.63 onwards, users can navigate to "System → Info" to supervise the I/O status. This panel shows statistics for all I/O ports. The available information for output (data sent by the sensor to the user) and input (data received by the sensor from the user) since boot is the following:

The user can use the two toggle icons, to temporarily set the message counts to zero or to show the relative message count.

 

The screenshot below shows that for the number of outputted messages on the respective ports and that no errors have occured since boot.

 

Input/Output Status dashboard

 

 

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