Cisco 8620, Справочное руководство

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5-37
Cisco Video Surveillance 8620/8630 IP Camera Reference Guide
Chapter 5 Configuration
Event > Event settings
Event
To configure an event with reactive measures such as recording video or snapshots, it is necessary to
configure the server and media settings so that the camera will know what action to take (such as which
server to send the media files to) when a trigger is activated. An event is an action initiated by a
user-defined trigger source. In the Event column, click
Add to open the event settings window. Here you
can arrange three elements—Schedule, Trigger, and Action—to set an event. A total of three event
settings can be configured.
•
Event name—Enter a name for the event setting.
• Enable this event—Select this option to enable the event setting.
•
Priority—Select the relative importance of this event (High, Normal, or Low). Events with a higher
priority setting will be executed first.
• Detect next event after x seconds—Enter the duration in seconds to pause motion detection after a
motion is detected. This can prevent event-related actions to take place too frequently.
Schedule
Specify the period of time during which the event trigger will take effect. Select the days of the week
and the time in a day (in 24-hr time format) for the event triggering schedule. For example, you may
prefer an event to be triggered only during the off-office hours.
Trigger
This is the cause or stimulus that defines when to trigger the camera. The trigger source can be
configured to use the camera built-in motion detection mechanism or external digital input devices.
There are several choices of trigger sources. Select the item to display the detailed configuration options.
•
Video motion detection—This option makes use of the built-in motion detection mechanism as a
trigger source. To enable this function, you need to configure a Motion Detection Window first. For
more information, see the
“Applications > Motion detection” section on page 5-42 .
• Periodically—This option allows the camera to trigger periodically for every other defined minute.
Up to 999 minutes are allowed.
•
Digital input—This option allows the camera to use an external digital input device or sensor as a
trigger source. Depending on your application, there are many choices with digital input devices on
the market which help detect changes in temperature, vibration, sound, light, and so on.
• System boot—This option triggers the camera when the power to the camera is disconnected and
reconnected.
•
Recording notify—This option allows the camera to trigger when the recording disk is full or when
recording starts to overwrite older data.
• Audio detection—A preset threshold can be configured with an external microphone as the trigger
to system event. The triggering condition can be an input exceeding or falling below a threshold.
Audio detection can take place as a complement to motion detection or as a method to detect
activities not covered by the camera view.
•
PIR—Applies to the Cisco Video Surveillance 8620 only. This option allows the camera to trigger
an event when the built-in PIR (Passive Infrared) sensor detects any motion objects by their thermal
to prevent the occurrences of false alarms.
• Camera tampering detection— This option allows the camera to trigger when the camera detects that
is being tampered with. To enable this function, you need to configure the Tampering Detection
option first. See the
“Applications > Tampering detection” section on page 5-44 for detailed
information.