CCTV System - Close circuit television System - UCJ
1.
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3. • Closed-circuit television (CCTV), also known
as video surveillance is the use of video cameras to
transmit a signal to a specific place, on a limited set
of monitors.
• It differs from broadcast television in that the signal
is not openly transmitted
4. History
The first CCTV system was installed for
observing the launch of V-2 Rockets.
The noted German engineer was responsible
for the technological design and installation
of the system.
These systems required magnetic tapes and to
be changed manually,
VCR technology became available in the
1970s, making it easier to record and erase
information
5. Application of CCTV
Bars / Pubs / Night clubs
Cash rooms
Car park
Gaming Machines
Historic Places
Holiday sites
Hospitals
Number plate recording
Public spaces and other
large areas
Reception areas
Retail
Schools
Shops
Stadiums
Staff theft & fraud
Vending machines
Ware house
Other uses
6. • Crime prevention
• Industrial processes
• Traffic monitoring
• Transport safety
• Sporting events
• Monitor employees
• Use in schools
• Criminal use
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8.
9. What to Look for When Buying a
CCTV System:
Should my CCTV cameras be discreet or a
visual deterrent?
How do I know what to use indoors and
outdoors?
What are the light conditions like?
Is image clarity important?
Is audio required?
15. Indoor / Outdoor Cameras
IR Day/Night Camera
Dome camera
Bullet Camera
Vandal proof Camera
Hidden Camera
Pan Tilt Zoom Camera
16. PTZ Camera
Pan – Right to left
Tilt – up & down
Zoom – tight angle to wide angle
IR day/night Camera
• It used for high alert security
areas where surveillance need
to happened day & night
• Used by Military personal, High
security parking zones
18. Technology for Lighting Issues
light is vital for producing a quality image
There are a variety of technologies available that will ensure you
capture usable video regardless of the lighting conditions:
Day/Night
21. Lens
it is important to understand the angle of the lens.
o The angle of view depends on the focal.
• The larger focal, the narrower view angle.
• The sensor of camera (h×v ):
The formula:
f = v x D / V or f = h x D /H
f: the length of focal
H: the height of object
V: the width of object
D: the distance between camera and object
h: the height of the sensor in camera
v: the width of the sensor in camera
22.
23. Fixed Lens
Fixed Lens are those lens where lens size doesn’t
change , all we can do is focus, we can’t zoom in or
zoom out
Common sizes are12mm, 8mm, 6mm, 4mm, 3.6mm, 2.8mm
Varifocal lens
In varifocal lens size can be changed
during the installation process & zoom in
and zoom out is possible
Common size available are
2.5mm – 8mm
3.0mm – 12mm
5.0mm – 50mm
Focal length can be adjusted by 3
methods
•Manual (no cable)
•Auto Iris (with cable)
• Motor zoom (with cables and telemetry
receiver is needed)
24. DVR
A digital video recorder (DVR) is an electronic device that
records video in a digital format to a disk drive, USB flash
drive, SD memory card, SSD or other local or networked mass
storage device.
How To Select The Right Security DVR
Frame rate:
Resolution:
Compression:
Storage Capacity:
Audio Recording:
Video Output:
Number of channels:
25. Connect Camera with DVR Co-axial cable
Connect IP camera with
NDVR/ NVR
Ethernet cable
Connect DVR and Monitor HDMI Cable
VGA Cable
USB Cable
Cables
26. Connectors
BNC For co-axial cable
Advantages of BNC
Industry standard for CCTV cameras
BNC cables are good for a distance of 300 ft.
(depending on cable quality)
BNC cables lock in place, ensuring a consistent
image and no unwanted disconnection
Disadvantages of BNC
Requires a separate power source
Only transmits video
Does not support audio
RJ45 For Ethernet cables
27. Monitors
When viewing live or recorded CCTV footage directly from your DVR or
NVR, you will need a display monitor, screen or TV with compatible video
input connections.