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About NVR

Thanks to the standardization process of network monitoring, today's NVRs, network cameras and application systems have the same language, no longer an image island, but a situation of industrial cooperation. Although the mainstream manufacturers' product lines are relatively comprehensive, everyone seems to be more open in terms of standardization. At present, ONVIF, PSIA and domestic GB28181 are typical examples. It can be said that standardization is the guarantee for further popularization of network monitoring.

High-definition network cameras have developed rapidly in recent years. Their adaptability to the environment and the price of close to the people give people the feeling of seeing each other, so in just a few years, they have made amazing progress, HD network cameras. The application is inseparable from the NVR, and the two are also moving. In the era of standard-definition, the NVR still can't see any special advantage. In the high-definition era, there is a kind of situation for whom I am. It can be said that the NVR can fly, the network is the platform for take-off, and the standardization and high-definition are its two wings.

Reliable storage frees users from worries

The storage characteristics of the NVR are between the DVR and the professional network storage device, which combines the advantages of both. For example, the application that inherits the DVR is convenient and simple, and has the reliability of professional storage. Support for ordinary hard drives, reducing the cost of use, and supporting simple and effective application mode can greatly extend the life of the hard drive. Generally, it can support various RAID levels and provide a highly reliable storage solution, so that important video data will not be lost due to damage of the hard disk.

In recent years, ANR technology has been promoted in NVRs and network cameras to effectively avoid problems caused by network transmission failures. The reliability of the NVR device can also be realized by means of the network. In the actual application, the N+1 technology can be adopted in the system constructed by multiple NVRs. When a certain NVR fails, the monitoring resources under its jurisdiction can be taken over by the standby device. At the same time, the user is prompted to troubleshoot and ensure the overall reliability of the system to the greatest extent.

The flexibility of networking makes it the infrastructure for network monitoring and construction;

With the help of the network, the NVR can build a more flexible system, which can surpass the traditional layer-by-layer deployment mode, reduce the intermediate links, and quickly and directly communicate between the image source and the user of the monitoring service. There is no intermediate conversion link, and the application is more efficient. Resources are also more economical. For example, based on the network monitoring system built by NVR, the video wall is deployed, and only the video wall decoding device is connected to the network, and the required image resources---regardless of real-time image or video playback, as long as it is authorized, it can be directly point-to-point. For access, there is no need for intermediate links such as matrices. This advantage can be better reflected in the construction of large-scale applications, which can also explain the current network construction of various large-scale monitoring systems.

In addition, the NVR and the network camera form a small system with complete functions but relatively simple structure. Upward, it can accept unified scheduling from the upper platform through the management control interface, thus ensuring the basic and important services such as video recording, and system-level services. Completed through the superior platform, an orderly division of labor, the complexity of the system is decomposed, and the robustness is improved.

As a product of the network era, NVR's mission is far more than replacing DVRs into a new generation of surveillance video equipment. With the emergence of new technologies and personalized customer needs, NVR is showing its strong horizontal tension in business integration. .

Fusion with intelligence makes video more valuable

Smart monitoring is no longer a new topic, and past monitoring has never been as real as it is now. Because of high-definition, let the intelligence not look at the flowers in the fog, because HD, so that intelligence does not need to be on the stage of deliberate makeup.

NVR also makes applications more efficient with the help of smart technology. For example, 1) intelligent search makes the time-consuming and cumbersome review of recordings extremely easy, so that the events of interest can be presented instantly, without concern for the video of unrelated time periods; 2) Intelligent video quality detection, NVR can be detected regularly The image condition of the connected camera, such as lens occlusion, focus blur, etc., can be found and notified to the user in time; 3) The combination of NVR and network camera can realize the intelligent function of real-time alarm: warning zone, item protection, crowd gathering and Brawl detection, etc.; 4) NVR can also achieve practical functions in some commercial occasions, such as population statistics, walking trajectory drawing, face recognition. Deep data mining makes the video speech.

Fusion with mobile networks

Wireless applications are becoming more widespread. The NVR can access real-time video via a mobile phone or tablet via wireless access to a network camera, and even make the phone act as a network camera for flexible and interesting applications.

The NVR has an intelligent bandwidth adaptation design that automatically adjusts the bit rate of the video stream according to the network conditions. Whether it is 2G or 3G, or WiFi, it can try to provide enough clear and smooth video.

In vehicle-specific applications, there are special requirements, multi-channel wireless technology, system adaptation, and super shock resistance. Some well-designed NVRs have emerged as the times require. High-definition video is continuously transmitted through wireless sources. Hotspots can be deployed as a center, and back-end services such as video and management can be provided to mobile systems in nearby operations. Different application modes.

Deep integration with enterprise application business

After in-depth market application analysis, we found that NVR plays an increasingly important role in enterprise applications, starting from the most basic security monitoring equipment to carry more applications, becoming an important tool for enterprise visual management, such as on-site management of production lines. In the application scenarios such as supply chain management, inbound and outbound logistics and logistics management, the integration of real image records and information is unmatched by other management tools. Especially in enterprises with chain branches, the NVR is deployed in various branch structures, and the information is coordinated with the headquarters. Although it is just a thousand miles away, it can be managed on site at any time. It can provide reference information such as traffic analysis and customer preference analysis, which is more efficient than the experience. At the same time, the NVR serves as the management portal of the headquarters. In addition to providing images and information, it can perform two-way voice intercom, and can also be extended into two-way video communication applications. It provides intuitive training and feedback for enterprises, command release and inspection. The channel, while obtaining these without additional cost investment, can greatly improve the efficiency of enterprise management operations.

In some large and medium-sized enterprises, the demand for image-based dispatching command is also urgent. The headquarters and large branches usually have video conferencing systems deployed. At this time, it is necessary to seamlessly access the image data of the branch offices for analysis and analysis. NVRs have higher requirements and need to be able to communicate with video conferencing systems. They are generally built using standard H.323 or sip protocols. For NVRs, these are not difficult.

Building a service system with cloud

The concept of cloud computing has not been widely promoted in the field of security monitoring, but from the actual effect, the current network monitoring system is actually a cloud system, but the scale is small, belonging to the private cloud category. NVR can be used as the base particle in this cloud, and it is also the core of a managed area. It provides resources to the upper system while enjoying the services it brings.

The new generation of NVRs has sufficient resource openness. It is no longer a one-way mobile service unit in the traditional sense. It can allocate resources on demand. Many NVRs can be combined as a huge resource pool as a basic service. Virtual into a platform service.

The current application of cloud storage in monitoring systems is not realistic, but intelligence is an important landing point for cloud technology to monitor. The NVR can deliver the results of intelligent analysis to the upper layer cloud, so that the cloud can easily obtain accurate and effective information. On the other hand, the cloud can provide global intelligent services, and the integration of information can also realize the sharing of computing resources.

Conclusion

New technologies and new business models are driving NVRs to diversify. NVRs will become more and more intrinsic, and integration capabilities will become stronger, which is inversely proportional to the number of buttons on the panel of the device. Just as the iPhone redefines the phone, the simple home button makes a lot of people familiar with the feature phone, but at the same time the rich content and great experience provided by the system is even more amazing. Similarly, the emergence of NVR redefines the video recorder, no longer confining people around the device, taking out your iphone to see what is going on in the company, and then watching a video, even if you are abroad now.

Application advantages of NVR:

First, flexible deployment

Due to the fully networked architecture, the monitoring point device and the NVR can be interconnected through any IP network. Therefore, in the NVR system, the monitoring point can be located anywhere in the network and can be quickly deployed without geographical restrictions.

In the DVR system, the monitoring point and the central DVR are connected by analog mode. Due to the transmission distance and the loss of the analog signal, the location of the monitoring point has great limitations and cannot be deployed remotely.

Second, convenient wiring, low cost

Center point:

The NVR only needs to connect one network cable to complete the wiring and installation, and realize the access of all monitoring signals of all monitoring points. The DVR needs to provide multiple cables for video, audio, control and alarm for each monitoring point. Therefore, the NVR is very simple and convenient in central wiring and maintenance.

Monitoring points:

The monitoring points of the NVR network DVR system are all IP front ends. Therefore, only one network cable can be used for wiring, and the NVR is accessed through the IP network. The front end of the DVR system is an analog device, and each monitoring front end is centered. Multiple signal cables such as video, audio, control, and alarms are required. Therefore, the front-end wiring of the NVR system is very simple, and the wiring cost is very low, and the existing network can be used.

With PoE technology, the IP front-end equipment in the NVR network DVR system can also be powered via Ethernet, and the power supply signal can be output through the IP front-end to power other peripheral devices, which further simplifies wiring. The front end of the DVR system must be powered separately and cannot be powered by PoE.

For monitoring points that are not convenient for wiring, the wireless IP front-end can realize wireless transmission of monitoring signals without wiring. The front end of the DVR system is an analog device and cannot be deployed wirelessly. 3 Q" ^4 O6 m, O" j

Third, the installation is simple

An important advantage of DVRs attracting engineers is that the installation setup is simple and requires no complicated configuration. NVR network DVRs also have this advantage and are more convenient.

The central NVR device and the remote monitoring point IP front-end device only need to plug in the Internet cable and turn on the power. All the processes can be completed automatically, including automatically searching all front-end devices, automatically assigning IP addresses to the front-end devices, and using NVR external display devices. Automatically display multiple monitor point images automatically.

Therefore, the NVR innovation realizes the plug-and-play of the network video monitoring system in the installation settings. Engineers and users do not have to worry about the difficulties of networked monitoring and installation.

1) Connect the Internet cable and turn on the power

2) Automatically search all IP front-end devices and dynamically assign IP addresses

3) Automatically complete local multi-screen display of all front ends

Fourth, flexible and reliable storage

DVR's convenient video storage is also a feature that attracts engineers. NVR also has a highly integrated and convenient video storage feature, which enables centralized storage through local hard disks and large-scale storage requirements through external storage devices.

Furthermore, the NVR system can also provide more flexible storage methods by deploying IP front-end devices that support front-end storage, and can realize backup of front-end storage and driving recorder central storage to meet the demanding application requirements for storage reliability. . The front end in the DVR system is an analog device, and front-end storage cannot be implemented.

Five, security encryption

Many people find network video surveillance systems insecure. In fact, NVRs are more secure than DVRs. In the NVR system, the IP front end can perform AES encryption on the code stream when uploading the code stream, and cannot be decoded even if it is intercepted on the network. The analog video and audio signals uploaded by the DVR front end do not have any encryption mechanism, so they can be intercepted and displayed easily. In addition, through the carrier-class user authorization and authentication mechanism, the NVR can effectively prevent illegal users from logging into the system.

Six, easy to use, easy to operate

Another feature of DVR attracting engineers is that they are easy to use and operate. The NVR network DVR also has very simple and convenient use and operation characteristics, and the engineer does not need to worry about the operation and use of the network monitoring.

NVR local operation: The NVR can be operated locally through remote control, mouse, monitoring and monitoring, etc. at the central point. The NVR can directly connect the display device to implement localization operation and management interface.

NVR remote operation: Remote clients can access any monitoring content through the network, including real-time browsing, video return visit, and monitoring point camera PTZ control, using a simple and clear browser or NVR client software.

Seven, full management, centralized maintenance

In the DVR system, the center to the front end are analog transmissions, and real-time monitoring and centralized management of transmission lines and front-end equipment cannot be realized. The NVR network DVR adopts full network management, which can realize the whole process monitoring and centralized management of transmission lines, transmission networks and all IP front-ends, including status and parameters, which can be seen at the center and maintenance is extremely convenient.