How to configure dynamic event filtering in REDSCAN Pro LiDAR
Our ONVIF compliant LiDAR REDSCAN Pro series allows the ability to create alerts based on specific detection criteria or logic. Alarms can be raised based on the sequence of zone detection or based on detection in multiple zones. One zone would be considered as ‘judgement zone’ and the second as ‘alert zone’. With this REDSCAN Pro can generate smart alerts dynamically by processing both ‘judgment zone’ and ‘alarm zone’ status.
What can dynamic event filtering be used for and how to configure it
There are many applications of dynamic event filtering and each requires a certain configuration. Some of the most common applications are explained here.
Directional tracking protection
If there is a requirement to only allow movement in one direction REDSCAN Pro is able to generate alarms for movement in the unwanted direction and no alarm when a person goes in the desired direction. One example of this application would be an exit only walkway.
For this application, REDSCAN Pro is installed in horizontal mount and the alarm and judgment zones are allocated to suit the site requirement. Set detection target for both alarm and judgment zones to ‘mobile object’ then apply the setting as in the table below:
Alerts for un-audited entry when a security guard is absent
Minimum height limit requirements at the loading bay
In this example, there is a requirement for an alert when a person enters a zone and the security guard is not on location; there is no alert when the security guard is present.
REDSCAN Pro is mounted horizontally and we set the security guard standing area as judgement zone and entry area as an alert zone. Both alert and judgment zone detection target need to be set to ‘presence’ and apply dynamic event filtering settings as below.
Tunnel protection
In this application, an alert is raised if a small car or van approaches a truck loading bay and there would be no alert for big trucks. The REDSCAN Pro is installed in vertical mount generating a virtual wall parallel to the loading bays.
The area above the minimum required height is set as ‘judgment zone’ and area below the minimum height as ‘alert zone’. To avoid false alarms by staff walking through the detection area, the minimum target size can be set to be reasonably large to ensure there is no alert when a person walks past this point.
Parked car protection
In this example, there is a requirement for an alert when a person enters a zone and the security guard is not on location; there is no alert when the security guard is present.
REDSCAN Pro is mounted horizontally and we set the security guard standing area as judgement zone and entry area as an alert zone. Both alert and judgment zone detection target need to be set to ‘presence’ and apply dynamic event filtering settings as below.
Contact our tech team to find out more about REDSCAN Pro and discuss your specific application.
The REDSCAN Pro dynamic filtering feature can be used for rail tunnel entry protection to ensure there is an alert if a person walks into the tunnel but no alerts for trains. The REDSCAN Pro can be installed in a vertical mount to generate a virtual door in the tunnel entrance.
The detection minimum target size is set to a value small enough to detect a person and maximum detection target size to include train width. We set the area above 2 m as ‘judgment zone’ and area in the tunnel entry below 2 m as ‘alert zone’. The judgement extension parameter is used to allow for a small time window when the nose of the train is detected in the alert area before the top of the train detection in the judgment area.
Watch the following video about REDSCAN Pro LiDAR dynamic event filtering applications
