IP-surveillance cameras: features, types and selection

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Modern IP video surveillance cameras are unique devices that allow you to record video, digitize the signal and transmit it to the monitor. There is a wide range of devices on the market today that also boast functions such as GPS, Wi-Fi, etc.

Difference from analog

IP-surveillance cameras work on the basis of digital technology, which has almost completely replaced analog. The main difference is that analog devices operate in interlaced scanning mode, including two half frames, while digital cameras use progressive scanning technologies. That is why it is possible to achieve more improved image quality and clarity. Such capabilities allow IP cameras to capture even moving objects, which is beyond the power of analog options.

Due to the fact that digital cameras transmit images via PoE, it is possible to save time and money when using such equipment. Switches are now able to support the operation of video transmitting devices for much longer.

Unlike analog CCTV systems, IP cameras boast smart technology. They are not only designed to transmit images, but also feature a built-in motion detector, event management and alarm system. In other words, the device independently decides when to send video, trigger an alarm or record. This greatly simplifies the process of using the video surveillance system and makes it autonomous.

Manufacturers are already engaged in the manufacture of cameras that can recognize the number of people in the frame, car number and other data.

In some cases, it is impossible to understand the features of what is happening from the picture. For this, it is extremely important to get sound, and only digital technology can provide such an opportunity. In analog systems, a separate channel must be used for audio transmission.

Device and principle of operation

Modern IP cameras are devices with a whole set of elements. This includes a high-quality lens, filters, matrices, video capture elements, compression units, RAM and control processor. All this together is designed to capture a video image and transmit it over a certain distance.

One of the most important elements is the matrix, due to which the reception of light vibrations occurs. In appearance, it rather strongly resembles a rectangular plate, which includes many light-sensitive cells. It depends on their number how high-quality the resulting picture will be. In other words, the number of cells has a direct impact on the resolution of the camera itself.

Further, the video capture elements are included in the work, which allow converting analog signals from the matrix. First, the device reads the signal, then amplifies it and starts encoding.

Another important element of any IP camera is the processor, which controls the operation of all device systems and programs that ensure its operation. Image transmission can be carried out both using a cable and based on wireless technologies.

Some IP cameras have a memory card slot or have their own flash drive. You cannot store video here. memory is needed solely for the safety of user settings, additional programs and video buffering.

RAM is needed to keep the system responsive. The more it is installed, the faster the camera can process the picture and transfer it to the installed media.

Advantages and disadvantages

IP video surveillance systems are becoming more and more popular and in demand every day. This demand is explained by a number of advantages, among which the following points can be highlighted.

  • Using the global network. A distinctive feature of IP cameras is that they are capable of transmitting a signal over the Internet, so you can watch video from anywhere in the world. This greatly simplifies the process of operating the system and does not require a full-time center for receiving and processing video.
  • Scalability. Modern IP video surveillance systems do not have any restrictions on the number of connected devices. Thanks to the use of the Internet, it is possible to create a huge system that can include thousands of cameras. It all depends on the needs of the user himself.
  • A high resolution. Today, almost all devices are equipped with good lenses and matrices, thanks to which you can get a clear and high-quality image at the output. The video frame rate is also at a good level.
  • Video compression is very fast thanks to powerful processors and RAM, which ensures fast information transfer.
  • The ability to transfer data to any distance, as well as organize their storage on any cloud or storage medium.
  • Security. Advanced IP cameras feature a built-in security system designed to protect the gadget from unauthorized access.
  • Remote control and third-party software can be used. If for some reason the software from the manufacturer does not like the user or does not fully satisfy his needs, then you can use any other programs.

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Of course, like any other device, IP cameras have their drawbacks. The main disadvantage is the low sensitivity to light in CMOS matrices. In addition, such devices are quite expensive, which is why not everyone can afford them.

Varieties

There are a huge number of types of IP cameras on the modern market, which differ in their functionality and work characteristics. Among the most popular and demanded today are the following varieties.

  • Modular, which differ in the most affordable cost. This type of camera includes a minimum number of elements, and the functionality is limited only to video recording. The main advantage of such a camera is its installation, which is quick and easy enough. Today, such devices are used in ATMs and various payment terminals.
  • Cylindrical, which are distinguished by the presence of a special casing. It is designed to protect the gadget from external factors. Usually, such devices are installed on the street, where you need to monitor security around the clock.
  • Dome. A distinctive feature of these models is that they are equipped with a closed lens. Dome IP cameras are widely used in banks, offices and various enterprises. With the help of such equipment, it is quite easy to observe what exactly the staff is doing during the working day.

The presence of a special dome does not make it possible to understand which part of the room is currently being watched by the lens.

  • Case. one of the most versatile options. Such models are characterized by an affordable cost, but at the same time they can only be installed indoors. If necessary, mount the box camera outdoors, you will need to use a special casing.
  • Panoramic options are in demand in properties where blind spots cannot be allowed. The main feature of such devices is that they are capable of shooting 360 degrees.
  • Miniature, the main purpose of which is the ability to carry out inconspicuous video filming. Of course, the small size directly affects the functionality, which is minimal and usually includes only video filming.

PTZ cameras, also called PTZ devices, deserve close attention. A distinctive feature of such devices is not only in providing camera movement, but also in the ability to scale images. This is extremely important for large objects, where you need to make an impressive approximation without loss of quality to consider the target.

The control of such devices is carried out using a local network or via the Internet. To do this, you need specialized software, as well as a control unit. Most models are equipped with a varifocal lens, which allows image scaling.

One of the advantages of such cameras is the fact that they can work completely autonomously. Special software makes it possible to program the camera so that it performs a specific scenario. Surveying can take place on a regular basis, at specific intervals, or only on a part of the territory. In addition, some models are equipped with a special motion sensor, which turns on shooting and data transmission only when movement is detected.

Among the main advantages of such models are the following characteristics.

  • High quality picture. It is difficult to find models on the market that differ in resolution below Full HD.
  • Impressive field of view, thanks to which it is possible to cover as much of the territory as possible. Some models even offer panoramic shooting.
  • Image scalability and wireless remote control.
  • Ease of installation. Most models are wireless-based, which greatly simplifies the installation process.

The only drawback of such cameras is their high cost in comparison with other types.

Top Models

There are many IP camera manufacturers on the market today who offer mostly identical devices. China alone offers hundreds of devices to meet any demand.

  • One of the most popular today is considered to be the products of the RVi company, which offers protected devices for creating security systems. In the manufacturer’s catalog, you can find models with autonomous power supply, with a SIM card, supporting the GSM standard and others. Among the distinctive features of the models are high quality, reliability and the ability to cope with any weather conditions.

Some models are offered in high strength casings that can withstand even mechanical stress and shock.

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  • Good devices are also offered by D-Link, which rightfully leads the rating of manufacturers. If you conduct a review, you will notice that most of the gadgets are intended for indoor use. These are small hidden cameras, devices with a flash drive, with a notification on a mobile phone or with a built-in battery. The list of the most popular and demanded models is as follows.
  • The DSH-C310 is a wireless PIR network camcorder that boasts the ability to capture and transmit images in Full HD resolution. The viewing angle of this model is 180 degrees. It features a memory card slot and boasts infrared illumination and the ability to shoot at night.
  • DCS-8000LH is a wireless network camera that features IR illumination and the ability to record video directly to cloud services.
  • The DCS-6513 is an outdoor vandal-proof dome camera. This model is capable of shooting video in Full HD resolution and is equipped with a slot for memory cards.

How to choose?

Before choosing such a device, you need to find out where it will be installed, whether guests should see it, what level of lighting in the area, whether it will be necessary to rotate the camera if necessary. Only after a thorough study of the conditions can you start choosing the most optimal option.

Depending on the installation location, the IP camera can be outdoor or indoor. The latter option can be installed in office premises, an apartment or any other place where the temperature and humidity are constantly within a certain range. A distinctive feature of external cameras is that they are able to operate even at sub-zero temperatures. In addition, these devices are resistant to rain, wind or dust.

When choosing, you should figure out what the IP camera should be: visible or hidden. This moment is more psychological. A hidden camera will allow you to monitor the room discreetly. If you want people to know that they are being watched, then you can, in general, not think about the size of the device.

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Some of the most important points to look out for when choosing a device are illumination and sensitivity. First you need to figure out in what conditions the gadget will be used. If in an environment of stable lighting, then any model will do. But in the presence of bright or dark areas, you will have to tinker with the choice. If the IP camera will be used around the clock, it is best to look for options that include day / night modes. When the required illumination threshold is reached, the device automatically switches the format, so you will always get a high-quality picture.

The quality of the resulting image is also ensured by the focal length. If you only need a general overview, then everything is simple, but if you need to get a detailed image, you will need to purchase a device with a wide-angle lens with a variable focal length and good shooting quality.

In the process of choosing an IP-surveillance camera, you need to pay attention to the availability of additional features. For example, there are models on the market that differ in the presence of a built-in motion detector. It allows you to monitor traffic in several areas at the same time and turns on recording when a person or other moving object is detected.

Among the other features that should be inherent in a high-quality camera are the following.

  • Compression technology. The fact is that the resulting image is transmitted over the network for storage in the archive, so the compression algorithm used is important.
  • The ability to record sound. Sometimes it is not possible to understand from the image what is really going on. The presence of sound will allow you to better observe the territory.
  • Type of food. Advanced IP cameras support a variety of power supply methods. The PoE technology is considered the most comfortable, since the receipt and transmission of data is carried out over one cable.

Thus, modern IP cameras are of high quality and provide the ability to monitor a room or object from any location. A wide range of models allows each person to choose the most optimal option for themselves, both for indoor installation and for organizing outdoor surveillance.

For IP video surveillance and connecting IP cameras through a router, see the following video.

IP Cameras

If we talk about IP cameras, then it should be noted right away that this type of video surveillance mechanism will be carried out via the Internet due to the binding of the device to the IP address of the computer. This option of monitoring makes it possible to carry out it both using a mobile phone and using a modem or wireless adapter. All recordings made by the camera are transmitted via the Internet. And to see them, you just need to know the IP address of the computer to which the gadget is connected.

Such a camera can easily work without permits, and the basic configuration is enough for the gadget to work. This option can work without interruption for a certain period of time. But the duration of such a period will depend on the constant operation of the PC and software that is installed on it.

How to choose?

For the correct choice of a wireless Wi-Fi camera for outdoor video surveillance, you should clearly understand what specific functions it should have in order to meet the requirements and requests of the owner as much as possible. Modern solutions have a whole list of technical capabilities that can be described as additional:

  • signal transmission from a built-in microphone;
  • auto-switching day and night;
  • activation from a motion sensor;
  • video archive recording;
  • the ability to encode the video signal;
  • presence of IR illumination.

If there is no great need for constant monitoring on the monitor, then you can choose a model where there is a microphone, there are recording and notification modes, as well as activation from a motion sensor. IR illumination is installed in all outdoor cameras. Almost all such solutions have a flash drive. The only difference will be its volume. You can use a password to protect your data.

An important factor in the selection will be a number of characteristics that determine the quality of the image that is transmitted. This is about:

  • permission;
  • sensitivity;
  • viewing angle;
  • video compression techniques;
  • operating temperature.

If we talk about the sensitivity of the device category under consideration, then it is usually measured in lux and allows different separate parts of the image when the illumination is low. For example, with a sensitivity of 0.01 lux, individual objects can be distinguished even on a dark night. This sensitivity is considered to be quite high. The current models of cameras have high resolution, which is why there are no problems with this particular criterion.

Speaking about the resolution of such devices, let’s say that this indicator is measured by the number of television lines. In video surveillance systems, cameras with indicators of 410-490 TV lines are used. If the camera has a high resolution, it will cost more. But to acquire such an option, frankly, does not make sense.

An important characteristic of the devices under consideration will be the viewing angle. This parameter allows you to define the size of the zone that will be monitored. If you want the area to be large horizontally, then you should take cameras equipped with a wide-angle lens.

If the lens is telephoto, it will allow you to control objects at a distance, but will reduce the horizontal field of view.

The video compression format will also be important. There are two options here:

It is the latter that is considered the modern and best solution.

Naturally, to work within the street, the device in question must have a housing with protection against dust and moisture, as well as a thermal sensor to create normal conditions for the operation of a video camera. Usually, the manufacturer gives a 12-month warranty for its products, but due to the presence of a protective casing, this period will in fact be longer. The only thing you should pay attention to is its characteristics and properties.

GSM solutions

If we talk about GSM cameras, then it should be said that it connects to a satellite tracking system, thanks to which the materials that it filmed can be viewed from any device with Internet access. In the software of such a technique, parameters are set at which the device in auto mode begins to take pictures, and with the help of a satellite, an alert in the required format is sent to the mobile phone.

Usually a motion sensor is included in the package of such a group of cameras. The rest of the sensors will be mounted at the request of the owner. But usually such a camera is supplemented with a fire-type sensor, as well as a device that reacts to the opening of doors and windows. In general, as you can see, there are a lot of cameras for outdoor video surveillance.

Characteristics

The main purpose of a Wi-Fi camera will be to convert an image into a digital type code. Regardless of its size and purpose, all cameras work according to this principle. It should be said that the word “image” in this case means the space in front of the camera. If we talk about the main characteristics that will be important for such devices, then we should name:

  • fastening technique;
  • viewing angle;
  • resolution;
  • is it turning or not;
  • the ability to change the focal length, that is, a long shooting range or not;
  • the presence of sound and motion sensors;
  • backlight;
  • vandal-proof or not;
  • comes with memory card or not.

What it is?

It often happens that there is a need to install cameras for outdoor surveillance, but it is either difficult or impossible to pull wires under a full-fledged system without disturbing the repair or some aspects. It would be best to use cameras with a Wi-Fi transmitter for the street with the ability to record on a memory card.

Such a camera can be called almost a full-fledged video surveillance mechanism. Usually, the device writes files to a Micro SD flash card. If desired, through a mobile or computer application, you can access the camera archive. Additionally, it is easy to set up recording directly to a computer or connect to a cloud storage. Then all records will be stored on a remote server.

It should be said that most of the models are connected using a wire with an RJ 45 connector or wirelessly. Setting up such a device is fairly easy. You just need to connect it to the router, enter the password for the Wi-Fi network, go to the special application that works with this camera, and that’s it.

When the device is connected to a router, it will independently configure a remote type connection via the Internet thanks to P2P technology, which makes it possible to control the camera from anywhere. It should be said that there are models of different equipment. For example, a number of solutions can be supplied with a microphone or with a motion sensor.

It also happens that the camera is also equipped with a speaker, which allows you to establish a 2-way communication using a mobile application. Wireless cameras for video surveillance can record not only by motion detection, but also notify their owner through the application via push notifications.

Wifi cameras

The third category is Wi-Fi camera. This video surveillance system, in general, does not need to be connected to a personal computer via wires. For such a solution to work, you only need a wireless Internet source, and the recordings made by the camera can be viewed both on a PC and on a mobile phone. Usually these cameras make excellent recordings with good quality. The main advantage of such solutions will be the ability to install where there is no possibility of connecting to the Internet by wire.

But there is also a minus. The point is that there will be a relatively short distance between the communication source and the camera. But at the moment, in principle, we decide if we add permissions to the standard configuration that allow you to receive a signal. Thanks to such cameras, it is possible to carry out covert surveillance of the object, which is why a number of models are not available for free sale.

Wireless

A wireless camera is a fairly reliable video surveillance device that has everything you need inside. Such a solution can monitor the object both online, and by saving information to some medium, or by transmitting information via e-mail or SMS.

The advantage of this solution will be the ability to work in any weather conditions. This is possible due to the use of a special thermal casing that protects the camera from overheating or freezing. Usually the body of such cameras is made of some kind of aluminum alloy or more durable metal. And also such a solution will be an excellent option for shooting in the dark, due to the presence of a special infrared illumination in almost every model.

Dome

Another option is dome cameras. Such equipment differs from others in appearance. All the insides of the camera are hidden inside a special case, which is made in the form of a hemisphere. This option can be either wired or wireless. A pleasant feature will be the ability to mount both on horizontal and vertical surfaces. The system also copes well with the scare function, due to the fact that the shell completely hides the direction of the lens.

In addition, the shape of the hemisphere will perfectly protect from both weather and anthropogenic factors. This option is the cheapest, but it does not affect the quality of work and the number of functions.

How to organize video surveillance in places without electricity and the Internet

To protect your hinterland home, crop field or boat at the marina, you can use autonomous video surveillance without power or internet connection.

Self-contained CCTV cameras will monitor your property while you are away from your fields or yachts. In fact, these CCTV cameras have advantages that you might not even be aware of.

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Advantage 1. Self-contained security cameras reduce the risk of theft in distant sites

You can guard your home in the village remotely. You will be instantly alerted if someone tries to invade your property.

Advantage 2. Autonomous security cameras will work in the event of a power outage

Autonomous video surveillance cameras. These are safety devices that operate on alternative energy sources such as batteries or solar energy. In other words, such security cameras will continue to protect you even during a power outage, including if it is deliberately turned off by criminals.

Benefit 3. Self-contained security cameras save energy costs

By installing security systems that work offline, you will be less dependent on the mains and save money on electricity bills.

Advantage 4. Standalone wireless security cameras are more environmentally friendly

Solar energy is a renewable and environmentally friendly resource. Standalone CCTV cameras are becoming more and more popular with consumers and the trend is growing. The use of such CCTV cameras causes minimal harm to the environment and allows you to lead a greener lifestyle.

In remote areas, you may be limited by either lack of power sources, lack of internet connectivity, or both. Let’s start with the first situation: the network connection is available, but the power supplies are worse. What can be the solution in this situation?

These solar-powered security cameras are capable of creating video and sending alerts to users when motion is detected. If you are a frequent visitor to your vacation home for a few days, battery-powered IP cameras will also meet your short-term security needs. You can connect to and receive alerts from your autonomous security cameras over 4G mobile connection without worrying about power outages.

Should you install standalone security cameras in places where there is no cellular and Internet coverage? Unfortunately, without a network connection, you will be deprived of features such as remote viewing and receiving alerts. However, the situation is not hopeless. If cellular communication services are not available in the place where the security system is installed, and there is no possibility of using the Internet, you will need video cameras for a memory card. Such a surveillance camera has a slot for an SD memory card, which will automatically record video. Remember that when the SD card is full, recording will start over. In order not to lose important footage, calculate how long your video can be stored before being overwritten. To save memory, use the motion detection video recording function. Also, adjust the resolution so that you can get the video of the desired quality, but at the same time so that it does not take up too much space on the memory card.

Router in a video surveillance system

In the modern world of telecommunications, the image from CCTV cameras can be monitored while in another city, if routers are installed in the system under consideration.

By configuring the routers, you can achieve good picture quality. So, each video camera on your home network must have access to a virtual server. Thus, it is necessary to dial a specific router address and a specific forwarding port. The system requires the above procedures in cases where surveillance is carried out using multiple cameras.

Configuration of modules. In the set of the equipment in question, users are usually provided with a program for a Wi-Fi CCTV camera. With its help, you can correctly configure the IP address of the module and the local network. Images are viewed through the LAN and the global Internet. But such a process is carried out only if one of the two types of IP addresses is available for the camera as an observation device. When this is not possible, users turn to DDNS technology. Then an automatic update of the information that is on the server is provided, and the access to the video surveillance camera occurs through the domain address.

Modern models of the devices under consideration are suitable for connection thanks to a patchcord, if they support P2P technology. Setting up here takes place by entering the device ID and password of the program itself, which is included in the delivery set from the manufacturer. In this case, additional actions to improve the image will not be needed.

How a wi-fi CCTV camera works

Now many organizations use wi-fi video surveillance systems. Indeed, the considered method allows, if desired, to view the video stream even at a certain distance. What’s more, the wi-fi camera eliminates the need for a dedicated wired system, which significantly reduces installation costs.

Creating a wireless network

The central source directly involved in the work of the CCTV camera is the Internet. However, for wireless operation, you need to connect a special router so that you can perceive the video signal from a distance and send it to the monitor.

This router is directly connected to video cameras. Observation of what is happening can be conducted from any point not only with the help of a computer, but also with a mobile phone. The main thing is that the components of the wireless network are configured for an Internet connection.

How does w-ifi CCTV camera work? The principle of operation of a Wi-Fi camera is to transmit an image to an IP video server online. In this case, you can record on additional media related to computer technology. If you plan to install one video camera, then a router or access point is not needed.

Today, there are several schemes that allow you to establish the operation of wireless video surveillance. The most popular is the connection of wi-fi cameras with an NVR via an access point.

Configuring CCTV Cameras

Sometimes, after installing CCTV cameras, problems arise with their operation. Therefore, before starting the installation, you should understand the general structure of the wi-fi camera.

So, the considered device consists of a processor, matrix, board, connectors. This collection is usually referred to as a module. The device works properly only if the light is correctly focused on the matrix. To accomplish this task, the wi-fi camera must be equipped with a lens.

According to the method of lens attachment, the following types of connections are distinguished:

The first step is to set up the Focus of the video camera system by changing the distance from the sensor to the lens. It is necessary to rotate the adjusting part on the body gradually, loosening the fixing screw. Although some camera models do not require adjustment since the lens is initially fixed at a set point.

Features of mounting wireless video surveillance

If the installation of wireless video surveillance is planned for the first time, then the whole process may seem quite simple.

Consideration should be given to where and how the equipment is installed. These two factors affect further settings and image quality. After all, the principle of operation of a system that ensures safety can be changed, depending on the type of module used.

For example, there may be street surveillance cameras at the facilities. They work like a well-coordinated mechanism, since the router, camera and modem are in the same case. In this case, it will be enough to put the necessary SIM card, which will lead to automatic configuration of all necessary functions, and also connect the camera to the Internet. Naturally, these systems are very convenient to use in those places where it is difficult to establish access to the Internet.

Outdoor CCTV Dome Camera

They are used to keep track of what is happening on a busy street.

They look like a small cylinder, closed from the bottom with a transparent glass dome.

It happens that the dome is tinted so that others do not see where the camera lens is looking.

Controlled by software, the dome surveillance camera is able to turn at an accelerated rate and track the movement of the intruder, no matter how fast he moves.

Glass dome protects camera electronics and optics from environmental hazards.

The characteristics of the cameras are identical to those described above. it is possible to install any model suitable in size and mount in the case with a glass dome.

An outdoor CCTV camera with recording is the same as the devices described above, with the difference that it can, in the absence of the possibility of transmitting a video signal in any way, write it to a memory card.

The owner installs it in places with minimal movement of strangers on the territory, activates the motion detector and leaves about his business, visiting to view the records once a week, on weekends.

Broadcasting from an IP camera. learning to control the picture remotely. Details here.

What a set of household equipment for organizing WI-FI video surveillance consists of, you can find out by reading our article: / WI-FI-videokamera /

Some models of such cameras are supplied by individual manufacturers with a solar battery and a rechargeable battery. in the daytime the camera works from sunlight, and at night from a battery that was charged during the daytime.

Outdoor WI-FI CCTV Cameras

Outdoor wireless cameras are a separate line. The principle of operation is based on the transmission of an analog or digitized signal from the camera to the receiving device via a radio channel instead of wires.

Analog video transmission is becoming obsolete, giving way to Wi-Fi technology, thanks to which the speed of information transmission and reception has increased many times.

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Hidden recording from a WEB-camera, we do not even suspect how much useful it gives to its owner.

In hard-to-reach places without a wired Internet, a GSM 3G camera will help out. Details on the link: / gsm-videokameryi /

Household equipment works at a distance of up to hundreds of meters (in a straight line). When using additional antenna systems, the distance increases significantly.

Professional, “long-range” equipment is licensed and not sold to individuals. such devices operate within a radius of tens of kilometers. An outdoor Wi-Fi camera is connected to the transmitter, the image is encoded and broadcast.

This camera looks standard: a sealed metal casing with protective glass and heating. Infrared LEDs for backlighting embedded behind glass.

Some models are equipped with a rotary mechanism, which is controlled remotely from the operator’s station. You can purchase and install it with any type of cameras.

Outdoor IP CCTV Cameras

For the layman, the IP66 symbols will not say absolutely nothing, nothing. The specialist will understand that behind these signs there is information that the camera has a high-level protection against precipitation, dust and dirt.

The temperature range for this kind of chambers is from minus thirty to plus sixty degrees Celsius. As a rule, the standard resolution of the matrix is ​​19201080, and the sensitivity is within 0.03 Lux.

Thanks to this, the camera “sees” in the dark without additional illumination. Despite this, infrared LEDs are installed in the body of the device and turn on in auto mode at nightfall.

If you are not greedy, and choose an outdoor IP video camera from ActiveCam, for example, you can enjoy the picture with maximum detail: the five-megapixel optical matrix gives a super clear image.

If you want to consider the details, it will not be difficult to enlarge the picture at times, without losing quality.

The camera shoots video with a resolution of 25921944, 20481536 and 19201080. It has a varifocal lens with autofocus and a motor, thanks to which it can zoom in on the subject.

Day / night mode, a mechanical infrared filter that allows the device to “see” in the dark, and even a two-way audio mode: the camera has a microphone and speaker, which allows you to communicate remotely with the operator and the customizer, or monitor the video and sound environment at the facility.

And also, the camera has a slot for a microSD card with a capacity of up to thirty-two gigabytes. Infrared illumination works up to thirty meters. Most outdoor IP surveillance cameras receive power from a standard power supply or a backup battery (not supplied).

Outdoor CCTV cameras. guard your safety in any weather! They are not afraid of either heat or cold. They are not afraid of dust, dirt, rain and insects. they work reliably in harsh conditions.

What video surveillance system does without outdoor video cameras?

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On the territory in front of a private house, cottage or summer cottage there are places, the protection of which would require the installation of such security devices.

This is a greenhouse with tomatoes and cucumbers, beds with potatoes, as well as all kinds of household buildings.

Even the integrity of the fence, gates and gates must be controlled. the local shantrap will spoil something with pleasure.

So zealous owners use both indoor and all-weather and color outdoor CCTV cameras. Self-installation of a video security system is not easy. Extra chores, extra work.

Laying cables is not complete without drilling and even chipping walls, installing fasteners, without debris and dust. On the street, it is advisable to hide the cable from prying eyes. this means that you need to dig a trench in the ground or use other methods to secretly lay cables.

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Need a video surveillance system, but no internet? The solution is right here: / gsm-videokameryi /

Of course, there is a way to save yourself from time-consuming operations, from dirt and back pain. Wireless outdoor surveillance cameras are distinguished by the fact that they do not need any cables. You just need to provide the camera with power by connecting it to the nearest outlet.

Of course, such a camera can work autonomously, using the energy of batteries or accumulators. Unfortunately, they do not last forever. the battery must be thrown away and the battery must be recharged. Thus, the power cable will still need to be provided.

Outdoor GSM CCTV Camera

A novelty among video security equipment. Its main purpose is to transmit video over cellular networks. To do this, a GSM modem is installed in it, which is responsible for the operation of the camera in the cellular network.

With a slow channel, the device sends an MMS with a photograph of the dangerous moment to the owners’ cell phone numbers. To make this happen, a motion detector works in the camera, which gives a command to send a video frame after it is triggered.

In the case of a fast communication channel with a cellular operator, the camera transmits video as a stream to the Internet, thanks to which the owner has the opportunity to view events in the “live” video mode.

Color cameras for video surveillance are used in private households, industrial premises and on the territory of factories, parking lots, courtyards. Users buy inexpensive options that successfully cope with all the tasks that are assigned to them.

DIY outdoor surveillance camera

We support the aspirations of those who like to do useful things with their own hands and confirm: if you have knowledge in your head, and your hands are used to working with a tool, it will not be difficult to make a solid hermetic housing for a video camera.

The methods of making the case, materials and attachment points depend on the imagination of the master.

The main thing is not to get carried away with the process, and to make a masterpiece that will not attract undue attention of uninvited guests.

The material of the body is, as a rule, aluminum. it does not rust, it is lightweight, and can be painted.

Those who want to simplify the process of manufacturing the body of an outdoor camera, make it from polyethylene pipes of a suitable diameter.

Plastic covers with holes for cables and a window for the camera lens are inserted from the ends. Protective glass is glued from the inside with a sealant.

Inside, in front of the protective glass, a heating element is attached to protect the glass from fogging and to heat the chamber in cold weather.

The hermetic casing made of aluminum looks, as a rule, more aesthetically pleasing, more accurate. The body with a hole for the protective glass is machined from a single piece of metal, or from a thick-walled piece of pipe.

At the rear, a thread is cut into which a cover with holes for a cable is screwed on. Areas for mounting the camera inside the case are being thought out. landing holes are prepared for a specific camera.

The homemade mechanism for attaching to the wall is made of sheet aluminum: it is important that the material of the body and fasteners is the same.

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It is necessary to provide for the possibility of turning and tilting to the sides with maximum swing. Even in spite of the fact that outdoor PTZ cameras are mainly used in places with busy traffic of people or vehicles.

After painting, the camera is installed in the housing, focusing and adjusting the lens. As a rule, such cases are difficult to distinguish from those made in the factory.

It is necessary that the video camera, which is placed in a homemade case, meets the owner’s requirements for image quality and overall dimensions.

They buy an inexpensive frameless model with decent characteristics, select a lens with a focal length that is calculated based on the coverage area.

DIY outdoor camera. nothing could be easier! Anyone who knows how to work with their hands and seeks to gain additional knowledge has the opportunity to create a video surveillance system based on homemade equipment.

Thus, outdoor cameras are conventional cameras that are placed in a sealed container to protect against adverse weather conditions. Their designs are different, but the principle of operation and purpose are the same.

Camera Wi-Fi device

A wireless camera is a digital video surveillance device that transmits information over Wi-Fi. By their design, IP cameras are divided into dome and box cameras. In the first case, the lower part is covered with a transparent plastic hemisphere, which provides additional protection for the equipment. The second type is placed on a special fixed or swivel bracket.

According to the permissible location, the equipment is divided into internal and external. The design of the external chambers allows them to operate over a wider temperature range. Such devices are protected against dust and moisture, in most cases certified to the IP66 or IP67 standard. Thanks to this protection, external cameras can work in difficult climatic conditions. When using a special protective cover, it is possible to install indoor equipment outdoors.

Important advice! When choosing an outdoor Wi-Fi camera, consider the protection class and operating temperature range. Equipment without IP67 protection is damaged by moisture entering the housing.

Most wireless cameras are used for outdoor installations, but some models are designed for discreet installations. Basically, for this, IP cameras are used without IR illumination and an external antenna. Backlight LEDs can attract attention, so not always suitable for hidden devices.

Among the common brands are Hikvision, VStarcam, Dahua, Foscam. IP cameras are also manufactured by companies specializing in network equipment such as TP-Link and D-Link. Many major electronics brands (Samsung, Logitech, LG) are also active in the wireless video surveillance market.

Depending on the model, the equipment used may have various additional interfaces:

  • Connector for an external microphone.
  • Input for external sensors and burglar alarms.
  • Output for connecting audio devices.
  • Ethernet port for wired network connection (works as an alternative to wireless connection).
  • MicroSD card slot.
  • Connector for external Wi-Fi antenna.

Main features of Wi-Fi cameras

IP cameras are connected to an existing local network through a router. As a rule, for this, the WPS (Wi-Fi Protected Setup) protocol is used, which synchronizes devices by pressing special buttons on them. Initial configuration of a network connection is also possible via USB or via an Internet cable, if there are appropriate interfaces.

Devices can support PTZ technology (pan, tilt, zoom). It allows you to rotate the camera along the horizontal and vertical axes, as well as zoom in on a certain part of the image. Pan, tilt and zoom operations are usually performed in the same window through which video and audio are broadcast. The web interface or a separate application is used for access.

Often, Wi-Fi cameras are equipped with infrared illumination, consisting of several LEDs around the lens. It can illuminate objects at a distance of 5 to 50 meters. Switching on is carried out in manual mode (via the control panel) or automatically if the device has a light sensor. In the second case, the LEDs start to work as soon as the lighting on the street or in the room becomes weaker than the set limit.

Important! Although infrared radiation cannot be distinguished by the human eye, some of the Spectra illumination may enter the visible range. Because of this, IR LEDs on are visible by a dim, dark red glow.

Some devices are equipped with a feedback system. They provide an opportunity not only to receive information, but also to transmit audio in the opposite direction. For this, separate speakers or a speaker built into the IP camera are used. This technology works in offices and industrial premises to transmit voice instructions to employees. Also popular at home as a baby monitor.

Advantages of Wi-Fi cameras

Convenience of connection, the possibility of remote access to the video stream and the availability of feedback are the main advantages of wireless devices for video surveillance. Connecting Wi-Fi cameras does not require laying a separate cable for information transfer. As with wired IP cameras, data is exchanged over the Internet, so the broadcast is available from anywhere in the world. To connect, just enter the IP address, username and password.

Another advantage is the wide functionality of the wireless camera software. When motion is detected at the protected object, the device can send the user an SMS or an e-mail message. Selected models also allow you to configure face recognition and notifications about changes in the status of connected sensors.

Video recording from IP cameras can be saved to cloud storage. For this, Ivideon or other similar services are used. They can be either free or paid subscription. It’s worth noting that not all devices have cloud connectivity. If you need such a function, check its availability before purchasing equipment.

The device and principle of operation of the Wi-Fi camera

Recently, the prevalence of Wi-Fi cameras for video surveillance has been increasing. Due to the wide functionality and ease of use, analog devices are gradually being replaced by digital ones. The share of wireless devices among IP cameras is increasing.

Tutorial Principles of Wi-Fi Camera Operation

Disadvantages of wireless cameras

The main disadvantages of Wi-Fi cameras: vulnerability to wireless network interference and the ability to jam the signal. If your Internet connection is slow or unstable, it will be difficult to watch the broadcast. In addition, if direct access to it is required to disable a wired camera, the Wi-Fi camera can be disarmed remotely using a signal jammer.

An attacker can spot the antenna, which is often equipped with such devices, and turn on the “jammer” to create interference in the 2.4 and 5 GHz bands. Wireless transmission of image and sound will become impossible. The only way to avoid the loss of recorded data is to use cameras with parallel storage on the memory card. Typically MicroSD cards are used.

The disadvantages also include the fact that the devices are not completely wireless. Despite the fact that the transmission of information is carried out over a radio channel, a cable connection is required for the power supply. Battery-powered models are not so widespread, they are mainly used as wearable devices (chest cameras and DVRs).

BYRGPUB.COM 2021