Wired wireless is perfectly integrated with security monitoring Industry Development

Wired and wireless integration is the future trend of security protection

With the increase of large comprehensive urban security protection projects and securityMonitoringSmart and networked wired monitoring cannot meet all security requirements. wireless monitoring is a supplement to wired network and is widely used. The trend of wired and wireless integration in the security industry is becoming increasingly apparent.

In modern society, information right is the master of leadership, and the grasp of the future.Video MonitoringThe development of this industry is no longer limited to the concept of small security, but has become an important means of collecting information and intelligence. Therefore, we should jump from the digital and networked perspectives of small regions in the security industry to a more macro perspective to observe the technical development of video monitoring.

Currently, the most powerful information interaction control system is the C4ISR system. It is the abbreviation of the first letter of the English words of the seven subsystems, that is, Command, Control, Communication, Computer, Intelligence, Surveillance monitoring, reconnaisance Reconnaissance. C4ISR is a comprehensive interactive system developed by Americans. The technological development of video surveillance should be completely synchronized with the informatization and network of the whole society.

With the rise of the concept of digital city and IOT, the trend of platform-based and big integration of video monitoring is becoming more and more obvious. In the future, the monitoring system will use advanced Internet technology, computer technology, and communication technology to form a unified nationwide monitoring network. All departments will share resources not only in the "Safe City, it will also play an important role in digital urban management, urban emergency response, digital community, Digital Home, government supervision, environmental monitoring, Emergency Command, Disaster Control, intelligent transportation, and other fields. Video Monitoring is still composed of four basic parts: front-end image collection, image transmission, image storage, and image monitoring and analysis.

Front-end image acquisition is now evolving towards high-definition and digital; Image Storage and image analysis are evolving towards distributed and intelligent development; and image transmission technology is also evolving towards multi-network convergence. From both the overall technological development trend and the results of market competition, Image Transmission Technology fusion is an inevitable trend. Camera digitalization also lays the foundation for the integration of transmission technology, in the future, we will use various wired and wireless technologies. Different types of products from different manufacturers will be integrated.

Currently, sensor networks, M2M, and IOT are a hot topic. Large companies such as IBM are also pushing "smart Earth ". All these are based on wireless networks. The security industry will develop towards intelligence and networking in the future. To achieve network, first of all, we need to solve transmission problems. Due to the ease of installation of wireless networks, as the cost decreases, it will become a more and more powerful supplement for wired networks, its development will also accelerate the network process.

Especially in scenarios where wired networks such as on-board monitoring are hard to cover, the emergence of wireless devices provides a wider range of security equipment and a wider range of application scenarios. From the perspective of intelligence, it is important to reduce the false positive rate and increase monitoring points. As a supplement to wired networks, wireless networks are easy to deploy and network coverage is increased without re-wiring. This is undoubtedly a boost to intelligence.

Integration of wired and wireless networks relies on the application of multiple technologies

In the past, security monitoring mostly adopted wired transmission, and the transmission media was constantly updated from coaxial cables, twisted pair wires to optical fiber cables. With the continuous improvement of Wired technology, various wireless technologies have also developed, making the transmission modes of security monitoring more diversified.

Wired Network Monitoring uses Ethernet transmission technology, which features stable bandwidth and outstanding image timeliness, smoothness, and clarity. For a long time, this transmission method still occupies the majority of the market share of video monitoring. wireless monitoring is characterized by flexibility, the main transmission method uses 3G, microwave, satellite transmission, and other technologies, which can be used for video monitoring when wired monitoring cannot be deployed. This is a powerful supplement to wired monitoring.

The continuous development of wired network monitoring is of great significance to video monitoring. This has led to a leap in the quality of video monitoring images and brought video monitoring to a new height; the development of wireless monitoring can greatly expand the monitoring area and scope, and achieve video monitoring anytime, anywhere.

As a mainstream wireless technology, 3G monitoring has gradually become a mainstream application of non-military wireless monitoring due to its wide coverage, low costs and low costs, its future development trend will be clearly seen from the current pursuit, and gradually spread from the high-end industry field to the low-end common user field. WhileWi-FiDue to limited transmission distance, it is suitable for small-scale indoor monitoring. With the increasing Wi-Fi hotspots of carriers, it can also become a supplement to wired monitoring networks. For example, In-Vehicle Monitoring uses 3G wireless monitoring and Wi-Fi monitoring as an extended monitoring method for wired monitoring.

The main technical difference between 3G wireless and wired monitoring is that audio and video streams are processed differently in different networks. 3G network applications are mainly used when wiring is impossible or wiring costs are high, such as law enforcement vehicle monitoring and remote site monitoring. It is an extension of Wired Network Monitoring and expands the application scope of video monitoring.

Wired and wireless integration involves wireless network transmission technology, wireless network-based data transmission technology, such as transmission optimization, and traditional monitoring technology, including data collection, encoding, and data processing. We can regard wireless monitoring as an extension of Wired monitoring technology. For the two widely used technologies, I think Wi-Fi will replace some wired monitoring as the mainstream transmission network. In scenarios where the monitoring site needs to be moved in a wide range, 3G and other technologies will be used as a supplement.

Hanbang's products are mainly wired, and wireless products are mainly 3G and Wi-Fi products. Generally, 3G has more applications than Wi-Fi products. Wi-Fi products have a short transmission distance, which is easily blocked and have poor performance. Therefore, there are few applications. In the future, RF may develop better, because the RF transmission bandwidth is relatively high, and the performance and effect are relatively good. However, it is not yet used in general security monitoring scenarios. It is expected that 4G will be a good wireless carrier and may be a good development after the development of large security traffic.

Currently, the monitored wireless transmission technologies include 3G networks, Wi-Fi, WiMax, and satellite communication networks, it mainly uses upper-layer public-discussion such as TCP/IP, gateway technology, and routing technology for image transmission.

3rd Generation. In indoor, outdoor, and driving environments, transmission speeds can be at least 2 Mbps (megabits/second), 384 kbps (kilobytes/second), and kbps respectively. At present, China Mobile, China Unicom, and China Telecom are all evolving towards 3g hsdpa. the downlink speed can reach 14.4 Mbps, the uplink speed can reach 5.76 Mbps, and the network interface card can support 12.2 Mbps.

In addition, Wi-Fi products that occupy a certain market of wireless video surveillance are widely used in the public-discussion of the 802.11g version, and the latest 802.11n is also supported. There are two main implementation modes of Wi-Fi: one is wi-fi with a targeted antenna and the other is wi-fi with a Mesh network topology. The Mesh network topology solves the coverage problem and is more scalable than the oriented antenna structure. The two Wi-Fi deployment modes currently provide a maximum transmission rate of 54Mbps, covering a range of more than 10 kilometers. Of course, this speed and distance are generally calculated in the above implementation form, and the actual general hotspot distance is still dozens of meters to three hundred meters.

WiMax standard public-the IEEE 802.16 standard is a wireless metropolitan area network access technology. The signal transmission radius can reach 50 km, basically covering suburban areas. Due to this long-distance transmission feature, WiMax not only solves the problem of wireless access, but also can be used as a wireless extension of wired network access (Cable, DSL) to facilitate network connections in remote areas. Satellite access means that users access the Internet directly through satellites.

At present, the satellite broadband access rate is generally 400 kbps, And the download speed of Multimedia can be as high as 3 Mbps. The advantage is that the access speed is high and it is not restricted by regions. It truly achieves seamless Internet access and can receive satellite TVs. Compared with other wireless communications, the satellite network covers the widest range and can be used almost anywhere on the Earth. However, due to climate impact, it is relatively expensive.