Camera in surveillance is your guard
There are various types of camera which is available on e-commerce or near our stores. But we don't know which sub-division of camera we should use for different purposes. So as a designer we should know which camera is suitable for different purposes. Please comment down at the end if it is helpful for you & we hope that we have saved your time from research.
CCTV systems are everywhere in residential, commercial & hospitality. If you noticed everywhere you have seen “CCTV Surveillance in Use” signs, But what does CCTV mean, and how does it work?
CCTV cameras are used for crime prevention because by monitoring in building premises and record the valuable footage of the wrong act. If you’re looking to reduce theft or for safety purposes, it is important to know the basics of video surveillance CCTV systems. What Is CCTV?
CCTV cameras are used for security monitoring and surveillance. Closed-Circuit Television is the full form of CCTV. CCTV systems transmit video footage over one channel, essentially creating a cycle. This means CCTV footage is displayed on particular monitors and screens, not publicly broadcasted.
How Does CCTV Work?
- CCTV systems use cameras to capture video footage of an act. This footage is sent to a recording device to store for the future which is called ( DVR or NVR).
- It is then sent from the cameras to a committed monitor, smartphone, or computer, which displays the footage in real-time. It can be played live on your smartphone as well as monitors.
- CCTV security systems are connected with a coaxial cable, network cables, or wireless signal depending on the system type.
- Even
in
absolute blackness at night, security cameras with color night view technologies also can see clear images in true color.
- Moreover,
most CCTV cameras equipped with motion detection sensors
can trigger alarms when there are human movements. DVRs,
or digital video recorders, are the modernized replacement for analog recorders
that use videotapes.
- DVRs
capture
footage from analog cameras during a digital format at the required resolution and
frames per second. When the hard disk of DVR gets full, new images will record over
the oldest footage first.
- NVRs,
or network video recorders, work similarly to DVRs, but they’re compatible with
IP cameras.
Different types of cameras
1. Dark Fighter Technology Cameras
- These cameras can pick up colored
images in very low-light conditions.
- Dark fighter camera is used m mostly in day and night because of its good low light conditions
- and wide-angle abilities.
- They are equipped with ½” CMOS (complementary metal-oxide-semiconductor) progressive
scan sensors which grant the device to prefer up high-quality images and doesn’t
require extra light.
Smart features: line crossing, audio and face detection
2. ANPR/LPR Cameras
- ANPR and LPR cameras are used to read and
store data on of
moving car plates.
- They offer a simple and efficient solution to
many organizations
including tolling, hotel overstay management, and the obvious: car parking.
- ANRP stands for Automatic
Number Plate Recognition.
- And these devices help to collect copious information during a high traffic area to
control any premises security
- Smart features: information storage.
- Can identify cars that have been banned from premises.
3. Internal and
External Dome Camera
The
dome camera is one of the most commonly used for indoor and outdoor security and surveillance.
The
shape
of the camera makes it difficult for onlookers to inform which way the camera is
facing, which may be a strong piece of design, deterring criminals by creating an air of uncertainty. Other benefits of this type of camera include:
Ease
of installation
2.0 Megapixel High-performance CMOS,
IR night
vision
4. Bullet Camera
- Bullet cameras are long and cylindrical in shape and are ideal for outdoor use.
- Their strengths lie specifically in applications that need long-distance viewing.
- Installed within protective casings, the cameras are shielded against dust, dirt and other natural elements.
- The cameras can easily be mounted with a mounting bracket, and are available fitted with either fixed or varifocal lenses counting on the wants of its intended application.
- IR night vision.
- Compact size -installation.
- High-quality image resolution.
5. Day and Night Camera
- Capable of operating in both normal and poorly lit environments, these cameras enjoy not requiring inbuilt infrared illuminators as they will capture clear video images within the dark thanks to their extra sensitive imaging chips.
- For this reason, these cameras are ideal for outdoor surveillance applications during which IR cameras are unable to function optimally.
- Record in both color and black & white.
- Wide variety of sizes available.
- Infrared capability.
6.
PTZ/ Pan Tilt and Zoom Camera
- PTZ – Pan/tilt/zoom – cameras allow the
camera to be moved left or right (panning), up and down (tilting) and even
allow the lens to be zoomed closer or farther.
- These cameras are used in situations where a
live guard or surveillance specialist is there operating the security systems.
- 200m IR night vision.
- X36 optical zoom.
- High-quality image
resolution.
7. Thermal Image Cameras/Infrared
Cameras
- One
of
the best 24-hour surveillance cameras around providing airports, seaports,
boards and many other critical infrastructures with quality images, no matter
what time of day it is.
- Infrared
cameras
have small LEDs surrounding the lens to help pick up moving figures in pitch
black. Thermal image cameras can see over long distances, up to 300 meters away.
- Detect
intruders
up 250-300 meters away.
- Good
in low-light.
- Thermal
radiationpasses through visual barriers.
8. Varifocal Cameras
- With
the
ability to zoom in and out without losing focus.
- Varifocal
cameras
allow you to adjust the focal length, the angle and increase or decrease the
zoom – ideal for obtaining footage in a square room where you would normally
experience a ‘dead zone’ with any alternative, fixed lens camera.
- Can
capture
those ‘dead zones’ that other cameras can’t.
- Offer exceptional focus.
- Work well up close and at long distances.
10. NVR AND DVR
- At the
core, both NVR and DVRs are responsible for video recording. DVR stands for Digital Video Recorder,
whereas NVR stands for Network Video Recorder.
- The
difference
between NVR and DVR is how they process video data.
- DVR
systems
process the video data at the recorder, whereas NVR systems encode and process
the video data at the camera, then stream it to the NVR recorder which is used
for storage and remote viewing.
- As DVRs
and NVRs handle the video data differently, they require different types of
cameras.
- Most
NVRs
are used with IP cameras whereas DVRs are used with analog cameras.
- It’s important to note that a DVR based
system is a wired security system, whereas NVR systems can be a wired or
wireless system.
Comments
Post a Comment