Monday, December 14, 2020

Everything you need to know about CCTV: the complete guide

 

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 360º, 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.


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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.

 

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