Today, a video surveillance system is an integral element of a single facility security complex. Video control lines are installed both on strategically important large perimeters, and in apartments and houses, so that personal property is safe. The latest technology allows you to install a wireless video surveillance system. It is not difficult to choose the right kit, you need to decide on the tasks and purposes of its installation, as well as familiarize yourself with the technical characteristics of all devices separately.
System Features
Wireless video surveillance system is a camera that captures events. This device has a certain range. Everything that happens around is recorded on a memory device. Events are accompanied by sound.
In general, video surveillance is divided into digital and analog. They differ from each other in the protocol that is used to transfer information. Today, more and more often in practice, twothese complexes. Due to the many advantages, the wireless system has become widespread.
Wireless CCTV cameras, as well as kits, are used in places where there is no way to connect electricity. Also cameras of this type are used to monitor:
- various technical processes;
- stations;
- bridges;
- highways.
They are installed in trading floors, on transport.
Working principle
Wireless camcorders are popular because they can be used just about anywhere and need to be discreet. The video surveillance system kit includes a video camera, which consists of:
- body;
- transmitter installed inside;
- recorder;
- receiver - receiver.
Also includes a 12V DC battery, antenna and cable. The latter is necessary in order to connect the receiver to the equipment. The recorder is responsible for recording video surveillance. The signal receiver is connected to a TV or computer monitor. There is a very strong connection between them, which reaches several kilometers. If the camera is of excellent quality, then the signal calmly passes through all sorts of obstacles, be it:
- plastic;
- tree;
- walls;
- glass.
Camera location and distance affect image quality.
Classification of wireless outdoor video equipment
Wireless video cameras are divided according to the principle of data transmission. GSM video cameras transmit data via a cellular communication channel. The range is limited by the coverage of the operator of a particular network. There are analog devices that operate on the principle of broadcasting.
There are Wi-Fi cameras that are represented by wireless IP cameras. The principle of operation is that such cameras are installed in places where there is access to the Web.
Benefits
Wireless video surveillance system has the main advantage, which is that the installation of equipment is carried out without wires, no need to hammer the walls, make channels for wiring in them. This is very important when installing an internal video surveillance system. This type of camera is easy to mount, they can also be quickly moved to another place and fixed there. If you need to expand the surveillance area, then it is possible to install additional cameras and change system settings.
Flaws
It should be noted that wireless video surveillance has its drawbacks. They are less protected, the stability of the signal is affected by weather conditions, the congestion of the WI-FI frequency, and interference that has occurred along the signal transmission path. For example, the presence of large reinforced concrete buildings nearby that can absorb it. A problem such as congestion is often seen in office buildings and high-rise buildings.
Mounting Features
When installing the wireless systemvideo surveillance for a private house, all cameras should be installed around the perimeter of the territory. It is necessary that the entire area is covered, there are no dead places left. When creating external video surveillance, experts advise using wireless cameras equipped with motion sensors. This system significantly reduces power consumption and records exceptionally useful video material. The operation of the entire system depends on the correct placement of the cameras. The lens of wireless CCTV cameras must not be exposed to spotlights, lanterns or direct sunlight, otherwise the image will light up.
When installing the device outdoors for outdoor surveillance, you need to protect it from:
- mechanical impact;
- dust;
- moisture;
- frost.
The best height is 3 meters. If set too high, then objects will be poorly visible, low - the video camera can be broken or stolen.
When organizing the internal placement of a wireless video surveillance system for an apartment with a recording, one camera with a large viewing angle is enough. But this is the case if the apartment has a small area. The camcorder should be installed in a corner on the ceiling. Windows from the device should be located at the back or side so that the light from them and the lamps do not fall directly into the lens.
Good night shooting will be with a video camera with high light sensitivity.
Dome cameras
IP Dome CamerasCCTVs have the shape of a hemisphere. It provides the widest viewing angle. This device is equipped with a video module consisting of:
- lens;
- matrices;
- boards.
The camcorder has a swivel mechanism. This explains its maximum functionality. It is expedient to use such cameras for operational surveillance. Often this device is equipped with a lens that has a function to change the focus distance. This makes it possible to significantly detail the picture and change the viewing angle at the right time. These cameras have a number of advantages:
- durable body;
- excellent picture quality;
- extensive viewing angle.
Some models are equipped with an infrared sensor, as well as a heating element. Thanks to the latter, observation is also possible at sub-zero air temperatures.
One of the disadvantages is the low bit rate when there are many cameras. Also, the spherical shape slightly distorts the image. Infrared light display can be observed on the surface of the dome.
Each manufacturer has its own IP camera surveillance software. Generally, the software only works with their hardware.
Redmond SkyCam RG-C1S
The camcorder is based on Wi-Fi wireless technology. The device has an unlimited range. It has a motion sensor that is remotely controlled from a smartphone viaR4S Home mobile application for Android and iOS. A number of cameras can be connected to one application. Key features include:
- real-time monitoring and control;
- video recording;
- image safety;
- voice communication from two sides.
The camera displays high-quality sound and distinct color video.
IVUE B1, 1.0Mpx
One of the best wireless video cameras is IVUE B1, 1.0Mpx with automatic time-of-day switching. The camera resolution is 1 MPX and the display resolution is 1280 x 720 pixels. It can be compatible with iPad, iPhone and Android. It has infrared illumination up to 20 m for fixing at night and a built-in motion sensor. This device operates at temperatures ranging from minus 30 to plus 50 degrees.
VStarcam C7812WIP
This camcorder stands out for its compact size and advanced features. It can be used with any video surveillance systems. There is a built-in motion sensor. The installation process is pretty simple. Viewing is carried out from mobile devices using Plug and play technology, HD video quality 1280 x 720 pixels.
Ambertek DV135S
This type of camera is considered one of the best standalone CCTV cameras. The mini camcorder has a mount, which is very convenient to wear on clothes. The device is made of plastic and metal. It has an HDMI output that can be connected directly to your TV. The camera records video at up to 60 fps and a resolution of 1920 x 1080 pixels. Availablebuilt-in motion sensor, even when shooting at night, does not lose high sensitivity up to 5 meters.
Ai-Ball Blue
This mini Wi-Fi camera shoots video that can be viewed on a computer, as well as Android and iOS mobile devices. Its dimensions are 30 by 35 mm. This is considered one of the advantages of the device. This model is light weight. The presence of the Multiview mode allows you to watch from several cameras at once.
MD81 Mini Wi-Fi P2P
This device looks like a flash drive. Due to its very small size, it can be easily attached to all horizontal and vertical surfaces, as well as clothing. It has a Wi-Fi connection, so this camcorder is compatible with all mobile devices.
Select device
With an extremely reasonable approach to choosing a device, you can almost completely eliminate the influence of the negative features of these devices. There are several criteria to consider when buying wireless video surveillance systems for your home. When choosing between analog and digital, keep in mind that the latest received data is transmitted to the computer via Wi-Fi. They have much higher video resolution. Analog function with PAL or NTSC signals, connect directly to the monitor.
The value is the angle of view and the focal length of the lens. Video cameras with a telephoto lens and a viewing angle of no more than 45 degrees are needed for capturing small spaces and remote monitoring. Instruments with a short focal length and a wide field of viewprovide a complete overview of the area. There are special cameras called varifocal cameras. They can change the viewing angle.
While an outdoor camera needs to be protected from weather and damage when installed, indoor cameras do not require a protective housing.
Important for video resolution is the number of pixels, which determines the quality of the image. No less significant is the ability of the camera to function in a wide dynamic range, as well as the sensitivity of the matrix. The quality of the picture depends on the light sensitivity of the camera and lighting. The higher the score, the better. A light sensitivity of at least 0.01 lux indicates that the camera is of high quality and can work around the clock.
Thanks to the presence of WDR technology, the illumination of the background, dark objects and faces is the same. This technology is available only in expensive devices.
For night shooting, the presence of infrared illumination is important. The automatic iris function allows the camera to automatically switch depending on the darkness or bright light. The more powerful the infrared, the better.
The price of a wireless video surveillance system is affected by technical parameters, which are the presence of a motion sensor and Wi-Fi, range, viewing angle and light sensitivity.
Thus, wireless monitoring of the territory and the house allows you to protect yourself from outside interference and reliably protect your property.
