The data on violence in United State is alarming.
Only thefts followed by death, known legally as robberies, increased by 50% in
the period from 2014 to 2020. Every minute, a car is stolen or stolen in the
country, that is, it is almost impossible to live without camera monitoring as
a way of inhibit the action of the bad guys.
Whether in homes or commercial locations,
surveillance is a real weapon to improve the security of both your family and
your business. Currently, the CCTV
system is the most used in United State and has excellent results,
including in assisting public security.
With technological innovations, there is a range of
options for you to make no mistake in monitoring by cameras. Want to know
everything about security systems and CCTV? So, keep reading this post and make
the best choice to protect your assets and also the people you love so much.
What is
CCTV?
Known here as Closed Circuit Television (CCTV)
or Closed Circuit Television (CCTV), in the United States, monitoring is
nothing more than surveillance by cameras that transmit the images in real time
to a video recorder or central exchange. monitoring in the case of IP cameras.
Due to the increase in urban violence in recent
years, the installation of CCTV has grown exponentially, mainly in homes,
buildings, stores, supermarkets, public areas (such as squares and avenues),
condominiums, companies, among others.
The system is the placement of cameras in strategic
points, especially where many people circulate or in areas that may generate
losses, such as in a company's warehouse or in supermarket aisles, in addition,
of course, in the most vulnerable points, such as parking lots. , front and
side of houses, with the objective of preventing illegal acts.
It is the most advanced technology of the moment
when it comes to security, with numerous advantages as we will show throughout
this article.
How does
CCTV work?
The CCTV has a very simple operation. The images
collected by the cameras are transmitted to TV screens that are located in a
central office. Reception is done by DVR or Stand Alone cards, allowing only
the display or recording, according to the configuration.
However, the proper functioning will only be effective
through the installation of a power supply, with adequate dimensioning for the
camera and also quality in the video cable connector, in order to guarantee the
signal capacity. Thus, a digital recorder and a UPS are essential for the
correct functioning of the CCTV system.
Cameras are integrated with video recorders and
image captures can also be transmitted to smartphones or tablets. Everything is
done in real time with modern lenses that capture images in high resolution , including 360ยบ, depending
on the model.
In this way, video monitoring distributes images to
one or more TVs, being an essential means not only to inhibit crimes, but also
to assist the police in investigating various types of occurrences.
A very important point is that the central does not
need to be in the locations where the cameras are installed, that is, who
supervises is safe and can even count on
remote monitoring .
What are the
main types of CCTV?
There are two types of CCTV: analog and IP. The
first is still the most used in the market due to the lower costs and was
responsible for the initial experiences of video surveillance in the area of
security, both property and residential.
In the analog, the connections of the cameras with
the devices are made by coaxial cables, which are responsible for the signal,
sending the images to the recorders and then to the monitors. However, the
quality currently does not differ, due to the
evolution of sensors and
resolution of the cameras offered by the market.
IP, on the other hand, opens up a range of
possibilities, as it offers high definition images, in addition to having
cameras that have IP technology, that is, the transmission of voice and video
data over the network occurs.
Another indisputable advantage is that everything
can be accessed through remote systems, such as smartphones, tablets or HD,
Full HD or even 4K monitors. These are factors that present favorable points in
cost-benefit.
Pay attention to the model chosen for the
management of the cameras, which can be
DVR (less cost-effective, images
with reasonable quality), NVR (full HD, excellent images) or HVR (hybrid, works
for analog and IP cameras), from according to the needs of your project. We'll
talk more about that in a little bit.
What parts
of the system?
Cameras
In addition to choosing the type of CCTV for your
business or home, another important tip is to know which fixed cameras you will
install, as each has different particularities. Let's go to them:
- Pinhole
- basically, the cameras are tiny, with even smaller lenses, which can be
compared to a pin tip. Although little sought after, they are very useful for
managing internal conflicts or for resolving possible situations of misconduct
within companies;
- bullet
- is cylindrical in shape and has an infrared sensor;
- Dome
- this is the most used on the market. It has a round shape, compared to a
bubble;
- Box
- are the cameras protected by a box.
The camera models integrate with the needs of each
environment. There are options with image sensor, infrared , for indoor and outdoor use, with
anti-rain protection and even with a system to inhibit acts of vandalism.
Places with less light generally have cameras that capture in black and white,
as they are more sensitive, generating superior image quality.
Those who do indoor video surveillance can also opt
for cameras with a microphone, which capture audio in the system. Pay attention
also to the proper cabling, which can be coaxial or UTP, with their respective
points of electric power. In the absence of a camera with microphone, there are
models sold separately on the market, with excellent quality of capture.
Lenses
However, cameras need good lenses to capture clear
images that allow approximations in the identification of a criminal, for
example. The most common are the fixed ones, which capture a wider viewing
angle or more focus, according to the need for monitoring.
Auto iris lenses compensate for the brightness of
the place, obtaining very clear images, regardless of the ambient lighting. The
downside is that it requires mechanical exchange. Already with the electronic
auto iris wins exactly in that aspect: it does not need exchange.
Other than that, each lens has a specification,
such as focal length, PAN, which perform horizontal and vertical movements, all
through a control that is under the responsibility of the operator.
In view of the numerous options, our tip is to seek
professional help in order to know all the details of your project before
choosing the system, cameras and lenses that will be installed, in order to
make a good investment, which brings effective results .
Image
recording system
DVR
The Digital Video Recorder (DVR) is a device widely used when you only
have analog cameras in operation, as it has a good cost-benefit ratio making it
cheaper in several cases. They offer several features according to the model,
such as:
- storage
of high definition images;
- real-time
monitoring;
- backup
files on external hard drives or in the cloud;
- access
to camera images at specific times;
- visualization
of the CCTV system through cell phones and tablets etc.
"As every pro has to have a cons", the
recording limit of the DVRs is 960 lines of resolution. In addition, the DVR system has the downside of storing analog images,
only. Even if there are IP cameras in the system, connected to the device by
cable, the image will be stored as being analog. The resolution of the image is
considered average and the device is indicated for those who have lower values to
invest in security.
NVR
The system and strengths of the Network Video Recorder (NVR) are very similar to those of the DVR.
It allows the integration and recording of all cameras on the same device. His
difference is the suitability only to IP technology. In this way, the cameras
will be connected to the device without using cables, but by the same wireless
network. The processor is quite powerful and the recording space is relatively
large.
The downside, however, is the cost. The device, in
general, is more expensive than the DVR. But since cables are unnecessary, there
will be a significant cost reduction in this regard.
HVR
The Hybrid
Video Recorder (HVR) is a combination of
the two technologies mentioned above, as the name “hybrid” suggests. This way,
it supports analog cameras and IPs in your system. Some HVRs also support AHD
technology, which is analog cameras with
high definition . It is a device suitable for those who want to continue
using the older cameras and want to increase others with more modern
technology.
The disadvantage is that the inclusion of analog
cameras in the system can make you vulnerable. This will happen because the
images from these cameras can compromise viewing in cases where it is necessary
to identify someone's face, for example.
How is CCTV
implemented?
The implementation of a Closed Circuit TV requires,
first, a deep analysis focused on demand, that is, it is necessary to do a case
study. Observe which are the points of greatest passage of people, which are
most vulnerable, where the cameras can be installed, in addition to setting the
objectives of each image capture.
It is essential that there is a quality
communication between you and the professional of the company hired to
implement the CCTV in Chicago. This is because each project has specific
features, such as monitoring access, controlling the environment, protecting
assets, among others.
Another key tip is to ask the professional if the
choice of locations where the cameras will be suitable. With a good
conversation and the probabilities traced, there are hardly any blind spots.
After all, they are great enemies that end up favoring the action of the
bandits.
Also carefully observe all the details that may
interfere with the monitoring. For this reason, more cameras are often needed,
based on the size of the site and the risks, such as fire.
In addition to the operational aspect, the
deployment requires that there is an adequate network infrastructure so that
the system works without interruptions. After all, the quality of the signal
requires the internet and integration between all equipment.
After all the checks, care and studies, it is time
to purchase the equipment, based on the reality of your project. The contracted
company will be responsible for the installation and subsequent tests, which
are extremely necessary for possible adjustments to be made.
At this point, one more question comes up: who will
be responsible for monitoring? You, the company that installed the CCTV or a
property security firm? Regardless of who is left with the management, the
company hired by the implementation must offer support, with the necessary
training.
This is important because many users may not yet be
familiar with the system and need to learn how to handle the cameras
correctly . Not to mention guidelines
that help on a daily basis and avoid mistakes, such as incorrectly triggering
an alarm or triggering an emergency in something that could be resolved without
the presence of officers.
Following all the tips, certainly your assets and
your family will be safer, considering that CCTV is today the main weapon of
citizens against the action of the bandits.
How
important is CCTV?
The main importance of CCTV is in crime prevention.
With the growing wave of violence in all United State an cities and even in
rural areas, nothing better than video surveillance to make criminals think
twice before taking action.
After all, when a place does not have cameras, the
chances of a robbery working out are much greater, being an attraction for those
who do not respect the rules in force in society.
The implementation of CCTV also helps in public
security policy strategies, as it aims at greater social control over places
that have high levels of violence, such as squares, events, not to mention traffic
monitoring.
Incidentally, cameras are extremely important for
controlling traffic, making drivers respect traffic laws, such as stopping at a
red light at a traffic light. In addition, video monitoring contributes to the
inhibition of losses, thefts and thefts in companies and homes, as we will see
below.
For
businesses
Since the presence of malicious people is
everywhere on society, no one can be totally free from suffering unpleasant
surprises. Thus, the CCTV in companies
prevents employees from diverting raw materials, putting money in their
pockets, being stopped at times of production or making poor calls.
With the cameras keeping the manager always well
informed about everything that is happening, it is unlikely that losses or
customer complaints will occur. That's because most employees refrain from
doing anything illegal when they know they're being filmed.
CCTV is also necessary to correctly point out who
was responsible for breaking certain equipment, given that often no one
immediately takes the blame. But it is essential to emphasize that the
monitoring of employees must not embarrass them or violate the privacy laws.
And, of course, it monitors all external areas of
the company, contributing to greater security, an essential point to avoid
major losses caused by possible thefts or thefts.
For homes
Being one of the main targets of robberies and
thefts in the country, homes need a CCTV
system to hinder the action of bandits.
In addition to ensuring the safety of your family on a daily basis, video
surveillance is ideal for times when the house is left with no one, such as
weekends or holidays .
When opting for digital monitoring, you will be
able to check the images in real time on your cell phone, that is, it is
possible to check if there is any problem with your pet, for example, assisting
in emergency actions.
You will also be able to observe who is ringing the
bell, being one more factor of security to not be surprised by a burglar, given
that, in many cases, criminals pass by beggars or service providers.
Video surveillance in homes by CCTV can also
inhibit acts of vandalism, such as graffiti or the use of drugs in front of
your home.
Another point worth mentioning is that you can call
the police when a suspicious attitude arises, such as the uninterrupted passage
of a car down your street, a very common action when criminals are studying a
probable assault.
In addition, when a service provider is going to
carry out a repair on your home, such as cleaning the pool or cutting the
grass, there will be another way to check if the deal is being performed with
quality.
What are the
benefits of CCTV?
You may ask yourself: does CCTV only contribute to
property security? Our answer is: no! In fact, the system goes far beyond just
that great benefit. Below, we list some more advantages.
Generates
evidence against labor claims
The record of everything that happens in the
monitored environments gives employers strong evidence about a certain labor
claim.
If an employee enters a lawsuit claiming that the
cause of an accident was a failure of equipment or even the company, the images
may demonstrate the other side of the story, such as the lack of use of
Personal Protective Equipment (PPE) or technical failures by the worker.
The company may still have the support of the law
for possible dismissals for just cause, as in the case of deviations of
materials, relying on the images as indisputable evidence. Even knowing that it
was filmed in an illegal situation, the employee will hardly seek justice, that
is, you will reduce costs and time with legal proceedings.
Ensures time
optimization
CCTV helps companies make decisions according to
the productivity indexes provided by the images. By monitoring employees, you
will be able to know who stands out most in certain functions, being a major
factor in optimizing time.
With this, it is possible to gain more
competitiveness and still improve the quality of services and products
available to customers, not to mention reducing losses.
Help in recognizing
criminals
Even if a crime does occur, the images provided by
the system are an excellent means of helping police investigations. The news
shows several cases of localized criminals and closings of investigations after
the findings evidenced by the CCTV.
In fact, the bandit's location is much faster when
the images are supported. This also applies to anyone who disregards traffic
laws or causes an accident due to recklessness. Images are essential to clarify
the facts, bringing transparency and credibility to the understanding of both
sides of a situation.
Prevents
vandals and criminals
Knowing that many people paint walls, destroy cars
parked on the streets, among other acts of depredation of property, CCTV is
excellent for inhibiting the attitudes of malicious teenagers or adults.
Other than that, the monitoring keeps the
surveillance for 24 hours, every day of the week, that is, you can prevent
crimes against the safety of your family, triggering the alarm when there is an
emergency situation.
The presence of the cameras alone already drives
away many bad guys. After all, criminals generally want to act in places that
offer less obstacles to their endeavors, that is, the implantation of CCTV is
fundamental to face urban violence.
Increases
public safety in cities
Video monitoring is also essential in public areas,
such as sidewalks and city squares. That's because the theft of cell phones on
the streets has reached an uncontrolled level. With the images, the authorities
are able to increase the success of locating criminals, strengthening
preventive and repressive actions.
In addition, the CCTV grants more well-being to
residents, as the movement on the streets is safer.
CCTV in
industry and commerce
If the use of CCTV has grown enormously in homes,
commerce and industries are not left behind. And in those cases, use goes
beyond security. Follow.
Industry
Both externally and internally, the use of cameras
reinforces security against the actions of assailants and also inhibits illegal
acts by employees. In the latter case, the person is discouraged from
committing theft or being unproductive at work knowing that he is under the
eyes of a camera.
In addition, there is still the possibility to
monitor production and locomotion lines remotely. This can be advantageous for
reducing the workforce and also to facilitate supervision in areas of difficult
access or high risk.
However, often in installations in environments
with many machines there is a risk of
electromagnetic interference in
the CCTV system. Specialized
security companies can solve the problem by using cable shielding and
electrical grounding of the devices.
