Breach Lines

Owned by Isabelle Avery (Unlicensed)
Last updated: Jul 03, 2023 by Charlotte Dakin-Norris
4 min read

Introduction

The page discusses the creation and configuration of Breach Lines.

Contents

Creating a Breach Line

To create a new Breach Line:

  1. Under the Configuration tab, select any Entity - for instance, the Breach Line folder.

     

  2. In the Configuration panel, select New, then Breach Line.

     

  3. The Create New Breach Line wizard will open in a separate window. Choose a name for your new breach line. Select Finish.

     

  4. The Breach Line will appear on the PPI as a plumline. It's position and shape can be edited using Standard Creating and Editing for a nodal shape. For more information please visit this page: Creating and Editing Entities.

     

  5. Once the new breach line is in the desired position, you must ensure the segments are facing the correct direction. Toggle Reverse Segment on and off to change the whole breach line direction, or Right Click on the arrows to configure individual sections.

     

  6. Once finished, select Save, and the breach line will established on the PPI Map.

A Breach Line functions as a one-way membrane. The solid arrow represents the direction through which tracks can pass through the Breach Line without notifying the user. The unfilled arrow represents the direction that the tracks cannot pass through the Breach Line without triggering a reaction e.g. an alarm. The arrows on each side of the line can be toggled independently by right clicking on the arrow: we can configure each section of the breach line to allow one way traffic, traffic for both directions, or disallow crossing entirely.


Breach Line Settings

Name: How the Breach Line will be labelled in the UI.

Enabled: Select this to toggle the Breach Line active or inactive.

Hide: Select this to hide the Breach Line on the PPI Display.

Reverse Segments: Select this to change the direction of allowable track traffic for all sections.

Disarm Mode: Choose from the drop down list; Manual, Auto or None.

Disable Breachline Timeout: If this is selected then it will not display the timeout selection list.

Colour: The colour of the Breach Line on the PPI, when not selected.

Video

Here is a short video showing the creation of a Breach Line:

In this scenario, the Breach Line is set to notify you if a track moves across the breach line towards the orchard. A track is allowed to move across the breach line in the opposite direction without notifying you.

Create a Breach Line Rule

A breach line by itself does not do anything. We will need to create a new Breach Line Rule and alarm configuration to use this breach line.

  • Alarm Description: You can use smart strings {LINE} {LINESECTION} for the line or line section names.

  • Breach Line: The breach line to use when calculating this rule.

  • Alarm Reset Timeout: Duration the track remains in alarm after line is breached in seconds. We recommend 5 seconds.

  • Minimum Seen Count: To avoid false alarms, only consider tracks after they have been sighted this many times. We recommend 5 seconds.

For more information on configuring a Breach Line Rule please refer to: Breach Line Rule.

Advanced Configuration

Breach Line Rules work with Allowance (as set in Advanced Configuration) in a slightly different way compared to other rules. Allowance is reset for the line breach rule when the track returns back to the original side of the line, or moves in a way that its location compared to the original location before it crossed the line is no longer crossing the line. For most purposes, our recommendation is to have a moderately low Allowance and instead use the recommended Min Seen count to reduce false alarms.

Related Information

Safety is everything.