NVR development continues to meet market demand

After the development of the past few years, the application of NVR gradually expanded, and more and more areas began to install NVR systems to strengthen its video surveillance network process. In the early stage of NVR, enterprises mainly focused on the applications of enterprises, factories, education, etc. The monitoring points in these areas were mostly scattered and it was difficult to implement a large number of cabling projects. Therefore, the application of network video surveillance and NVR systems was more preferred.

NVR needs to meet changing market demands Given that the domestic video surveillance market is still dominated by analog systems, its market demand is very obvious in a certain period of time; through verification in various market areas, NVR has fully demonstrated its networked video. The superiority of monitoring will gradually become a shining "nova" in the storage and management of the future video surveillance market. The NVR trend has become the mainstream of the industry.

Based on the improvement of network construction and quality, NVR products will also move toward broader market applications. For example, the promotion of NVR and the network operator's business combination has gradually begun to show “power”. With the deep resources possessed by network operators in households, enterprises and other users, the development of networks in these areas has greatly promoted the development of NVR. In addition to the gradual expansion of market applications, the transition of NVR system applications from small to large systems is also worth noting.

As can be seen from the traditional way of modular combination, its system architecture is very limited by the matrix architecture. Under the traditional mode of modular integration, capacity expansion has reached a bottleneck. At the same time, the increase in the scale of the requirements for manageability is also increasing. At present, the safe city project is the area with the highest requirements for massive video surveillance storage, in this respect The demand is soaring. Therefore, the NVR solution that can solve the above problems has become the preferred solution for the emerging Ping An project.

NVR adapts to different industry application segments The demand for NVR in different fields is different, and it is different from the product customization of special industry applications. In the interview, it was learned that, in addition to considering the price of the product, most of the NVR functional requirements of the project will remain at the level of “enough to use”. Therefore, how to select a suitable NVR for different application areas is the key to ensure the successful completion of a project. For example, during the interview, some engineering companies engaged in security projects in the coal mining industry stated that when selecting NVRs, the factors to be considered in addition to their applicability, the ease of maintenance, the ease of operation, and the resistance to harsh environmental performance must all be taken into account because they are considered in coal mines. In the harsh environment of application, stability is the most important, followed by the ability to quickly maintain and re-use as quickly as possible in the event of a failure.

In the field of financial applications, such as the special importance of bank surveillance applications and the diversity and complexity of applications, it will certainly consider more about the storage quality of video images, the specific requirements for storage industry, the convenience and speed of retrieval, and intelligent video. Analysis and application and convergence with the original DVR system, but will weaken some of the video real-time monitoring. In the reconstruction of old projects, NVR is often used in conjunction with DVRs and DVS devices to achieve digital storage. Therefore, in the product selection of NVR, it is more important to consider the performance of the disk array RAID of the NVR. The reliability mechanism of the hardware redundancy guarantees the security and continuous video of the financial data. NVR plays an important role in the construction of bank monitoring storage system, which effectively ensures the normal operation of the security monitoring facilities of the banking system.

In large-scale enterprise and commercial neighborhood applications, NVRs are often deployed at various branch offices of the enterprise front-end, and are cooperating with the headquarters for information management. For example, NVRs used in large shopping malls often require the provision of reference information such as traffic analysis and customer preference for intelligent video analysis. In this application scenario, the NVR may emphasize the performance of its remote networked data transmission, remote control, and image real-time monitoring. Moreover, this type of NVR serves as a management portal for the headquarters. In addition to providing images and information, it also requires two-way voice. Intercom, or expanded into two-way video communication applications, the selection of appropriate NVR for this type of company can improve the operational efficiency of enterprise management.

In terms of the selection of product features, the engineering firm generally stated that in addition to the need to strengthen special performance for an industry, the basic functions of the NVR still have to return to the application itself. Because the main function of the NVR is to ensure stable and reliable 7×24 video surveillance and video recording, some vendors on the market now ignore the basic or most important functions and pursue so-called additional functions, such as sales, often. The NVR is bound to an accessible disk, or is bound to a user, which only highlights the NVR's storage. The average user does not need a very large amount of storage when purchasing an NVR. If the user really needs a large amount of storage, a dedicated disk array should be selected to solve the problem. Therefore, when the user selects the NVR, he must consider his own needs, and try to avoid making erroneous choices on the optional subsidiary functions, so as to indirectly increase the purchase cost of the equipment. At the same time, manufacturers must also rationally analyze and face the needs of users. They cannot use slick features to fool users.

Under the tide of innovation, NVR's technological route needs and innovations The current development of the security market is no longer a certain product to occupy the market, customers demand to provide an overall solution. From previous security exhibitions, we can see that in the past, exhibitors took the equipment as the center for product display; at present, at the exhibition, exhibitors have gradually developed their focus on providing solutions, and are increasingly digging into the excavation. Industry customer needs. The changes at the show reflected the needs of the market and more and more customers demanded to provide overall solutions.

The solution based on the "NVR IPCamera monitoring platform" is increasingly accepted by customers. The main application is highlighting high-definition content. For example, 720P may be able to use only 2 Mbps bitstream bandwidth, which is not greater than the D1 stream. How much, there is not much pressure on storage, but the clarity is improved a lot, and you can see some of the more detailed features, which are very helpful for case detection. Currently there are many applications in safe cities, banking systems, and campus monitoring.

The development of NVR is closely related to the front-end equipment and back-end monitoring platform. For the front-end device, it is required to be compatible with the IP Camera that accesses more manufacturers; for the monitoring platform, the NVR is required to have good access performance; the NVR needs to consider these factors in the architecture design.

The development of back-end equipment is now divided into two directions: one is the centralized storage direction, the main equipment is IPSAN, NAS, etc.; the other is the distributed storage direction, and the main equipment is NVR. Centralized storage mainly involves high network bandwidth requirements, high exchange capacity requirements for switches, and high performance requirements for central storage servers, which results in high overall costs. Another problem with centralized storage is data insecurity. Because it is centralized storage, if the storage server has a problem, the entire data may be lost. Compared to centralized storage, distributed storage data is stored on a single NVR. When the center needs to view the preview and playback data, it needs to connect to the NVR. The requirement for the network bandwidth is relatively low, and the cost of the entire project is also low. The author thinks that from the long-term development trend, distributed storage has more advantages than centralized storage. On the other hand, centralized storage management of data is only a few hundred or more, to show its advantages, for a small number of occasions, centralized storage management is complex, high cost, there is no advantage, sales in the channel, NVR IPCamera The program has advantages.

NVR is currently divided into PC-based NVRs and embedded NVRs. The PC-based NVR is mainly based on a PC, and runs a set of NVR management software on it. The embedded NVR is mainly an NVR implemented by an embedded software and hardware platform. Two kinds of PC-style NVR hardware development is relatively difficult to compare, and the software function is slightly more powerful, easy access to different manufacturers of IPCamera, as long as the SDK can access; and embedded NVR hardware development is relatively difficult, but from a long-term The overall cost of embedded NVR software and hardware is low and the system is stable. Chip vendors have realized the NVR development opportunities. Currently, chip manufacturers have developed chips suitable for NVR use, such as Hass and TI. The SDK development package provided by the chip manufacturers is becoming more and more complete, and generally provides a complete solution. The development difficulty of the embedded NVR is gradually reduced.

The performance of the chip is gradually improving, and the hardware decoding capability has evolved from 1 1080P to the current single chip can solve 6 1080P, and the subsequent chip decoding capability will gradually increase. Other storage capabilities and network capabilities are improving, and the ability to integrate single chips is increasing, and the BOM cost of the whole machine will be further reduced.