Multiple Areas Rule

Owned by Isabelle Avery (Unlicensed)
Last updated: Oct 24, 2023 by Charlotte Dakin-Norris
3 min read

Introduction

This rule checks to see if a track has moved from Area 1 to Area 2. There is no time associated with this check and it relies on the track Id being maintained between the areas. Typically this is a very effective way to check where a track has entered a site. You can specify that if a track has come through an area and moved into a secure area that it was either an unauthorised or authorised route and raise an alarm as required.

Contents

Configuration

Nodes

Input

Track Sighting Input

Checks

Area Check 1

We use the AnyTime option on this area check which means this check will evaluate to true if the track has at any time passed through this area, it does not need to be in the area at the time of the check.

Area Check 2

This check is Now, which means the track must be in this area at the point this check evaluated.

Boolean Link: And

Actions

Alarm

Camera

PPI Example

In the example below the first area in purple is the Field. The second area is the Orchard. Track 0-1 moves into the Orchard without passing through the Field area, and does not raise an alarm.

However, track 0-2 has gone through the Field area:

So when they enter the Orchard area the alarm is triggered:

Video

The following video demonstrates how to configure a multiple area rule using the Area Movement Rule wizard and adapting it to use two areas. As in the above scenario the first area in purple is the Field. The second area is the Orchard. Track 0-1 moves into the Orchard without passing through the Field area, and does not raise an alarm. However, track 0-2 travels through the Field area before entering the Orchard thus triggering the alarm.

Safety is everything.