Adding ALPR cameras as TSS entities - Security Center Traffic Sensor Management 2.3

Security Center Traffic Sensor Management Plugin Guide 2.3

Applies to
Security Center Traffic Sensor Management 2.3
Last updated
Content type
Guides > Plugin and extension guides
English (United States)
Security Center Traffic Sensor Management

Before you can monitor Automatic License Plate Recognition (ALPR) cameras as traffic sensors in Security Center, you must add ALPR units as TSS entities to the plugin.


  1. From the Config Tool home page, open the Area view task.
  2. Click Add an entity () and select TSS.
  3. From the TSS model list, select ALPR, and then enter an entity Name.
    Tip: For better search indexing, it is a best practice to include the location of the sensor in the name.
  4. Click the Properties tab and configure the entity properties:
    Stale data age
    If the system does not receive data for a zone by the time indicated here, it considers the data to be stale.
    Analytics schedule
    (Optional) If the TSS device sends alerts only, select a schedule to receive alerts. Alerts received while the schedule is inactive are discarded.
    Maximum cached data age
    Specifies the maximum time within which data from the TSS zone can be reused.

    When the TSS plugin is restarted, it stops storing the last known status of each zone. If the status is more recent than the time specified, it is used as the initial zone status for the zone. If it is older, the zone initializes with no data available.

    Override icon traffic parameter
    If enabled, select the data type that controls the color of the zone icon.

    For people counting, if the default traffic icon parameter is not set to Volume in the plugin properties, select Volume.

    Zone icon size
    Size of the zone icon displayed on maps, in pixels.
    No data threshold
    If the TSS entity does not receive data from the device by the time indicated here, it triggers the custom TSS no data event.
    Tile View
    Choose to display speed and occupancy statistics for this TSS entity in tile view.
  5. Click the Zones tab.
  6. Click , and in the Add/Edit ALPR Zone dialog box, configure the zone's properties:
    Zone description
    Enter a description for the zone.
    Relative motion:
    All vehicles, whether they are approaching or moving away from the ALPR camera, are considered in the data.
    Only vehicles that are approaching the ALPR camera are considered in the data.
    Moving away
    Only vehicles that are moving away from the ALPR camera are considered in the data.
    Saturation value
    Number of vehicles per sample period that is considered as 100% occupancy.
    Travel time node ID
    (Optional) Enter the corresponding node ID from the Travel Times Engine where the average speed data is sent to. Travel time detection must be configured in the TSS plugin.
    Select the direction of traffic. If you are using analytics confirmation macros, this setting can be configured to find all zones that are the same or opposite direction of the zone that triggered the analytic.
  7. Click OK.
  8. Select the new zone. On the right of the Zone list, set the Zone thresholds.
    When enabled, threshold persistence prevents the zone state from changing rapidly when data is fluctuating around the threshold point.
  9. For each zone configured with a third-party traffic sensor system that you want to associate to the entity, repeat steps 6 - 8.
  10. Click Apply.
  11. From the entity tree, right-click the TSS entity and select Put Online.
    Security Center starts polling or accepting data from this sensor.