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The VMDA detection tools react to object movement. When they trigger, an alarm is generated. On the basis of this alarm, you can perform actions in the system.
If you want to initiate an alarm on a camera when the VMDA detection tool triggers, set the Generate alarm on camera checkbox.
Note
You can set the alarm generation mode for any type of VMDA detection tools using the VMDA.oneAlarmPerTrack registry key (see Registry keys reference guide).
You can arm and disarm the VMDA detection tools using macros or scripts, which must be created manually (for the detailed information about macros, see Creating and using macros). By default, the detection tool is armed after creation.
The table below describes possible reactions on detection tool triggering (for example, on line crossing or motion in the area).
VMDA detection tool is armed | VMDA detection tool is disarmed | |
The Generate alarm on camera checkbox is set | Alarm on camera + alarm on detection tool | Nothing happens |
The Generate alarm on camera checkbox is clear | Alarm on detection tool | Nothing happens |
Note
The Disappearance in area detection tool triggers immediately after an object in the area disappears. By default, the alarm is reset 15 seconds after the alarm triggers. You can change the alarm reset time using the DisappearedAlarmDuration registry key (see Registry keys reference guide).
To create a VMDA detection, do the following:
Note.
The VMDA detection is now created.
Next, you must select and configure the motion variant to which the detection tool will trigger:
Attention!