Centrix R36 Release Notes

Release Version	Centrix R36
Release Date (Staging)	23 March 2015
Release Date (Production)	02 April 2015
Summary	DC / TI21 track circuit alert processor DC / TI21 track circuit alert training & validation Alert labels for e-mail subscription groups & categorisation Saving of report parameters for re-use

Configure a Track Circuit Alert

Open Centrix and navigate to the Alerts tab.
Click the + icon at the bottom left of the page to create a new alert
Select Track Circuit and click Create Alert.
To manually configure the alert, complete the form fields and click OK.
To automatically configure the alert (trained from historical data), click the Click here to train this alarm button. See next section of release notes for alert training.

For TI21 track circuits you should select the average current channel (IAVE) for the track circuit channel.

DC / TI21 Track Circuit Alert Training & Validation

In addition to manual configuration of track circuit alerts, Centrix can also train the alert thresholds using an historical data set.

Click the Click here to train this alarm button from the create/edit alert dialogue (see section above).
A new window will open and you will be prompted for your username/password. Enter your Centrix login credentials.

Training Data Set

This is the data set that will be used to train the alarm. You should select a range of normal operation, ideally without many faults or exceptions. The alert should ideally be re-trained after maintenance.

Select the start date for the data you want to train the alert on.
Select the end date for the data you want to train the alert on.
Select a sensitivity % for the current thresholds (used to tweak the low clear / high occupied threshold calculations). Higher % is more sensitive.
Select a sensitivity % for the time thresholds (used to tweak the falling & rising deadband threshold calculations). Higher % is more sensitive.

Validation Data Set

This is the data set that will be used to validate the alert thresholds. The alert will be tested against this data and you will be presented with a visualisation of the data showing how many alerts would have fired and allow you to inspect the alerts to verify their correctness. Ideally the validation data set should be different than the training data set.

Select the start date for the data you want to validate the alert on.
Select the end date for the data you want to validate the alert on.

Running & Interrogating the Training

Click Run to run the training process and validate the data. This will take approximately 5-10 seconds depending on the size of your data sets.
The validation data set will be presented in a graph under the Validation Visualisation section.
The alert thresholds will be calculated and displayed under the Calculated Thresholds section.
The Low Clear and High Occupied thresholds will also be presented on the graph as guides on top of the validation data.

Validation Visualisation

Once the training is complete a message will be displayed in this section saying Done. N alarms detected.
If alarms were detected they will be presented as vertical red lines on the graph.
The graph will automatically zoom to the data range between the first and last alarm that was detected.
You can click and drag to zoom the graph into a specific range.
Click Show all on the graph to zoom back out to see the entire range of the validation data set.
Click the button above the graph to switch to panning mode. In this mode you can click and drag on the graph to navigate through time.
Click the

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