SHARX SECURITY SCNC3904, Руководство пользователя

Страница: 61 / 64

Page 61
Appendix F: Suggestions for effective motion detection
We’re working on it, but currently consumer cameras are not yet smart
enough to recognize if motion is actually caused by a person, even if you
followed Appendix C to fine tune motion detection windows and settings.
Generally motion detection is more intended as a tool to reduce boring
recording footage where nothing is changing, rather than an urgent call to
action every time the camera detects something. Still, it might be interesting
to check the details of what led up to a motion detection event.
One way is to enable continuous recording from the secondary stream (as
described on page 45) together with motion detection snapshots recorded to
MicroSD or emailed or uploaded to DropBox. That way, the motion detection
snapshots can indicate where in the continuous recording there might be
something worth looking at, including what happened before and after.
Another way to achieve this is with the new “ pre-record ” feature that can be
enabled in the camera’s stream setup menu. This adds the selected number of
seconds prior to the motion event in the “record on alarm” footage.
If you find a lot of motion detection events caused by insects, this cannot be
fixed by adjusting threshold/sensitivity settings since a tiny bug up close to the
lens appears bigger to the camera than a person at normal distances.
Instead, if the insects are more than just a short term seasonal nuisance in
your area, we have these suggestions:

Place inexpensive ($3 - $5) solar LED garden lights near the cameras
yet out of the field of view. Most insects are far more attracted to the
brilliant bluish white of the solar LEDs than the dull red glow of the IR

An inexpensive ($20 and up) external IR illuminator placed 6 – 10 ft
away from the camera would allow you to turn off the camera’s own
IR LEDs, and that way there would be no attraction at all for the bugs,
and no IR light reflecting directly off the bugs back into the lens

For outdoor model SCNC3905 only: The alarm connector described in
Appendix E can also be used for the connection of a special dual tech
motion sensor. It uses microwaves like a police radar gun to detect
moving objects and even uses an IR body heat detector to exclude
pets or small animals under 80 lbs. For professional applications, these
are available by special order from Sharx Security for under $100