CCTV
systems can provide an effective solution for educational environments.
Keeping intruders off campus and remotely monitoring secluded areas can
cut down significantly on crime and provide peace of mind to
administrators, teachers, staff, students and parents. To create a
safer environment for learning, schools need to offer cutting-edge
security measures.
We can provide a very cost effective
solution for your CCTV
surveillance
requirements using both hardwired and
network CCTV cameras.
Network CCTV systems have many advantages over conventional Hardwired
systems, the cameras are connected to your existing computer network
cabling (LAN). Thus saving the need for dedicated cabling for each
camera position.
This can drastically reduce the labour
cost involved when installing
additional cabling.
The images can be viewed from any
allocated PC on your computer
network, and then stored onto a hard drive.
A
solid security plan for a school facility should answer the question,
"What are we interested in protecting?" If the answer is personnel and
property both inside and outside the building, a school or university
needs to identify its trouble spots. Is the institution more likely to
have an assault in the car park, suffer vandalism or have equipment
carried out the fire exit?
The
configuration of the camera system needs to be based on a philosophy,
such as the desire to record the face of everyone entering the
building. If you also want to record the face of a person leaving the
building, especially those stealing equipment, you will need at least a
second camera, since the first will only view the back of the subject's
head. If you also want general surveillance of long corridors, the
images of persons at the far end of the corridor may be too small to
identify, but might be adequate to identify a person carrying equipment.
When
trying to protect the exterior building perimeter, car park, sports
areas, bicycle sheds, utility connections and other outside areas, you
must use exterior cameras. Exterior cameras are more expensive than
interior cameras because of the cabling pathways and weatherproof
environmental housings. Exterior cameras also must adjust dynamically
to a wide range of lighting, from direct sunlight to little or no light
in the evenings.
For
instance, a DSP digital camera can balance the light in multiple zones
within the image. Monochrome (black and white) cameras can see better
in low-light conditions and have sharper contrast. Some colour cameras
will switch to monochrome automatically when the available light
drops.
The
use of a pan/tilt/zoom (PTZ) camera is not always an effective way to
eliminate the need for multiple cameras. The cost for a PTZ dome camera
is many times the cost of a fixed camera, and a typical PTZ camera is
not able to view all 360 degrees at the same time.
PTZ
cameras are adjusted by human intervention, or a signal from a motion
detector or door contact. Since staff are not always available to move
the cameras, sometimes events are not seen or recorded, however PTZ
cameras can be programmed to automatically view an area when an
external movement sensor is triggered, thus with the use of multiple
movement sensors a large area can be covered using just one PTZ.
Modern
CCTV systems use a DVR (Digital Video Recorder) to recorded camera
images . This has replaced the conventional method of using video tape,
providing higher quality recording, easier image archiving and lower
system maintenance.
Digital recorders can change the frame rate dynamically when motion is
detected in the screen. This is important to maximize the recording
archive period; for instance, a school does not need a full motion
recording of an empty stairway, only when there is a change in the
picture, caused possibly by a person walking through the scene. A
digital recording system by nature does not experience degradation of
the image resolution because the files are stored in the same format as
when they are recorded.
School security concerns report
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Security
and Safety CCTV Installations
Single to multi-camera systems.