How to choose and implement a video wall in security projects

Video walls have become an important element of security systems, we see them especially in projects that involve a large number of security devices, such as cameras, video recorders, access control systems, etc..However, now they are also affordable to smaller projects thanks to the fact that their costs have dropped and the variety of manufacturers available in the market.

This article will give us an overview of how to implement a typical video surveillance video solution and some aspects that we must take into account.The topics we will discuss in this article are:

Application of a typical video wall solution in security

The use of video wall is very useful in video surveillance and integration projects by means of VMS and BMS platforms, as advantages is the deployment of shared and real -time information to different interest groups in the same monitoring center, whatwhich provides a better response time in situations of intervention and/or incident control.

For example, in an IP video surveillance system a camera that uses video analysis can detect an intrusion on the perimeter and send an alarm signal to the monitoring center.

The VMS processes the alarm by activating the monitoring pattern function of the associated PTZ camera and this image is shown in the video wall monitoring the intruder of the intruder.Simultaneously the system may display the video image recorded in another section of the video wall for the analysis of the security operator, allowing you to identify how the intrusion happened and thus take the corrective measures to which there is room.

TOPOLOGY FOR THE DESIGN OF THE VIDEO WALL SOLUTION IN NETWORK

In a typical video wall application as a network video surveillance monitoring solution, IP cameras transmit their signal through the data network that the client has, using network switches on edge, if the client has a VMS this also alsoIt will be part of the network scheme, as well as the client stations from which monitoring operators can interact with the video wall.

Typical topology diagram of a video wall solution

According to network traffic, the design must contemplate a Red Core Switch for proper data traffic management.The video wall must incorporate a decoder with which all the video video data of the cameras are received and makes it.

Decoder and controller for video wall.Source: Hikvision

If other video inputs even connect from other formats are required to be deployed in the video wall, it will be necessary.Some manufacturers incorporate both the encoder and the controller in a single unit.

Considerations when choosing a video wall

In the process of specification of a video wall it is important to take these considerations into account:

Monitors resolution

It is important that according to the video quality in terms of resolution of the input signals for the video wall system, the monitors have the resolution according to the input signals and in this way the quality of video expected by the user is not affected.

Monitors

According to the available space, it will be necessary to determine the size and number of monitors to be implemented, so it is always advisableVideo wall solution maintenance.

Thickness of the joints or monitors

This is an important aspect because it will depend on the separation between both horizontal and vertical monitors, and the lower this less noticeable or notorious space will be the division between monitors.Typically this measure is between 5.5 mm and 2 mm.The cost of monitors can also vary by this parameter, the thinner the bezel, the screen value can increase.

Types of Video Walls assembly

In general, video walls are installed on two types of assembly:

Pedestal assembly

It consists of a base in which the wiring and the supports of the monitors can be organized according to the number of them, the manufacturer usually also supplies this type of frame or structure and the size will depend on the number of monitors.At this point it is important to consider the space of separation of the wall structure and the distribution of the monitoring room, this in order to have an ideal spacing between the monitoring point of the operators and the video wall.

Pedestal type support.Source: Hikvision

Wall assembly

They are supports that are installed on wall and in the same way they are designed for the adaptation of wiring in the back of the monitors.It is very important for this case to consider the weight of the monitors to also verify if the wall structure will support the weight of the set of monitors, and also the structure as such and the weight of the wiring.

Wall support.Source: Dahua

Video illustration wall.Source: Freepik.com

Conclusion

Video Wall systems have evolved along with the advances in video, lower energy consumption, as well as lower weight and cleaner technologies, and together with the advance of integration platforms these systems are a fairly cost-cost solutionEfficient in monitoring plants for all types of supervision and control of situations or incidentprocesses.Take into account design aspects prior to its implementation such as topology, resolution, size and type of assembly will be very useful for a successful installation.