Dahua Technology IPC-HDW5842T-ZE, Operation Manual

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Operation Manual
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Table 8-7 Description of IVS functions
Rule Description Applicable Scene
Tripwire
When the target crosses tripwire from
the defined motion direction, an
alarm is triggered, and then the
system performs configured alarm
linkages.
Scenes with sparse targets
and no occlusion among
targets, such as the perimeter
protection of unattended
area.
Intrusion
When the target enters, leaves, or
appears in the detection area, an
alarm is triggered, and the system
performs configured alarm linkages.
Abandoned object
When an object is abandoned in the
detection area over the configured
time, an alarm is triggered, and then
the system performs configured alarm
linkages.
Scenes with sparse targets
and without obvious and
frequent light change. Simple
scene in the detection area is
recommended.
●
Missed alarm might
increase in the scenes
with dense targets,
frequent occlusion, and
people staying.
●
In scenes with complex
foreground and
background, false alarm
might be triggered for
abandoned or missing
object.
Missing object
When an object is taken out of the
detection area over the defined time,
an alarm is triggered, and then the
system performs configured alarm
linkages.
Scenes with sparse targets
and without obvious and
frequent light change. Simple
scene in the detection area is
recommended.
●
Missed alarm might
increase in the scenes
with dense targets,
frequent occlusion, and
people staying.
●
In scenes with complex
foreground and
background, false alarm
might be triggered for
abandoned or missing
object.
Fast moving
When the motion speed is higher
than the configured speed, an alarm
is triggered, and then the system
performs configured alarm linkages.
Scene with sparse targets and
less occlusion. The camera
should be installed right
above the monitoring area.
The light direction should be
vertical to the motion
direction.