When and how to achieve the leap from analog to IP video system is one of the most challenging challenges faced by security managers in enterprise organizations. They want to move to IP monitoring immediately, but for cost management considerations they need to extend the life of existing equipment. In most applications, the transfer of technology will proceed gradually, and in the process, analog and IP solutions will coexist.
Decide on camera investment based on demand
Security experts of enterprise organizations mainly consider whether the existing or new IP cameras can provide the required image quality and realize the requirements of system functions. Each application site has different requirements: some users require that the suspect can be tracked even under poor lighting conditions, while other users only need to clearly see the corridor. In many technology transfer plans, specific areas that are vulnerable or where image details are needed are ideal places to install high-resolution network cameras, but can high-resolution cameras be useful in every place?
As part of the coexistence plan, on the camera side, a digital encoder can be used to convert the picture from analog to digital signal transmission and storage. If the equipment in the analog control room is scrapped, the new IP control room equipment can manage the installed analog cameras. Another way to reduce the budget is to keep the existing analog equipment such as cameras, control rooms, TV walls and cable wiring unchanged. The VMS system software is combined with the existing control keyboard to manage the new IP equipment and The installed simulation system.
Choice of transmission method
Coaxial cable, shielded twisted pair and unshielded twisted pair cable, optical fiber and various wireless methods transmit most of the security video. The differences and commercial advantages of various transmission solutions are reflected in the cost of installation and maintenance. So, will the new network camera end the long-distance analog signal cable transmission mode?
The strategy for managing both analog and digital networks is to transmit all signals on one fiber. By avoiding the use of multiple media, transmitters, and receivers, it is safe, free from electromagnetic interference, and simplifies the use environment. In addition, the power supply cannot be ignored. After adopting the coexistence plan, multi-plug, addressable, programmable power supply equipment is very advantageous.
Other considerations include the increasing impact of bandwidth on corporate networks. This is a tricky job, but IT can solve it. New types of compression, decompression, or codecs, such as H.264, can reduce bandwidth load when processing with larger storage capacity and command centers? The budget can afford the increased transmission and storage requirements of megapixel cameras ?
Storage and retrieval challenges
Most organizations already have digital hard disk recorders for storage and retrieval. Despite the large number of functions and advantages, storage solutions are facing challenges. These scopes range from common specifications to useful basic functions, such as the preset position function controlled by the intelligent pan / tilt, the email or SMS notification function after the motion detection or event alarm is triggered.
On the camera, the security manager also adopted the SD memory card method. When the camera loses contact with the system, the video image may be lost. At this time, the SD memory card method is very important.
In any case, before deciding which mode to transition to IP, the following aspects need to be considered:
· If it is remote video surveillance, will we get an exception report?
· Do you need to share video information with legal efficiency with other departments? Do you need real-time?
· What is the storage capacity and the storage time?
[NextPage] Need to consider the control side
Command and control require careful consideration. Traditional matrix switching and joystick operation are heavy loads, but in the rapidly developing software world, the next step will be to consider network video matrix switching.
Traditionally, in the process of transition from analog to digital video, in order to retain analog cameras, business organizations convert analog signals into digital signals by purchasing and installing video encoders. They replaced the old analog control room equipment with new IP control room equipment, which would be expensive if replaced at the front end.
Therefore, some people think that a better way is to build a compatible coexistence system. In this solution, the system keyboard is connected to the VMS instead of the matrix switcher, and the simulated part of the system is not affected and does not need to be changed. VMS becomes the head of the entire system, and operators use their traditional keyboard commands to manage analog and digital solutions.
This is because VMS can be connected with the analog matrix switcher and network camera, and finally displayed on the spliced ​​TV wall. Although the analog and IP solutions coexist, the operation is still separate. Without a mouse, the system can send the image of the network camera to the digital display and the signal of the analog camera to the analog display, which is clear to operators. In this compatible and coexisting solution, enterprise organizations can implement IP solutions by adding network cameras, digital surveillance, and VMS.
Integration
For most security managers of enterprise organizations, true security system integration is their goal. In addition to relays and interfaces, security video with seamless integration of electronic access control, intrusion, and peripheral identification systems is a profitable situation for any IP operator.
Regardless of the speed of technology transfer, a good plan allows coexistence of analog and network cameras. This coexistence increases the overall performance and management capabilities of the security system, while improving the efficiency of its operations. The hybrid solution provides a sustainable development plan to extend the service life of existing equipment at a reasonable price and easy to manage.
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