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The prospect of mobile surveillance applications is enticing. HD promotion still encounters resistance.

The prospect of mobile surveillance applications is enticing. HD promotion still encounters resistance.

Since the advent of mobile monitoring technology, due to factors such as cost and network bandwidth, market applications have been tepid, far from meeting our ideals and market expectations. 3G and 4G technologies have undoubtedly brought unprecedented opportunities for mobile monitoring. It is time for us to pay attention to the mobile surveillance market. The prospect of mobile surveillance is enticing, and how to deal with high-definition issues has become a major problem for future development.

Mobile surveillance application market prospects attractive

The mobile video surveillance system is flexible and can be used with the monitoring features. Therefore, in some remote places such as mountains, forests, rivers and rivers, etc., where there is no way to lay wires, or temporary monitoring sites, there is no need to lay wires. Traditional wired monitoring cannot meet the needs, only mobile video surveillance. To meet the demand. Wireless mobile monitoring is a true "clairvoyant" and "shunfeng ear", so it has the unparalleled and irreplaceable advantages of traditional monitoring, especially in the application fields such as bus, subway, emergency command, on-site stability, on-site law enforcement, etc. people.

We are pleased to see that while the network transmission is conducive to the popularization of mobile surveillance technology, the mobile monitoring technology itself is also constantly improving. Nowadays, most of the bus mobile surveillance cameras, vehicle mobile surveillance cameras, and individual mobile wireless surveillance cameras have night vision functions, and the monitoring distance is farther and farther. For example, the infrared laser night vision police car heads launched by Bao Qianli in Shenzhen recently. The monitoring distance reached 400 meters.

In terms of applications, mobile phone (or mobile terminal) monitoring is mostly used for enterprise users, industry users and home users. The market potential of the civilian market is huge; bus mobile monitoring is mainly used in transportation, including long-distance buses, dangerous goods transport vehicles, etc. The market space is very large; vehicle mobile monitoring, mainly used in law enforcement vehicles, including police cars, emergency command vehicles, urban management law enforcement vehicles, fire trucks, etc.; law enforcement recorders and mobile individual equipment, relatively more professional applications, but also have No small market potential. With the continuous development and maturity of mobile monitoring technology, the cost of network and deployment is declining, and the spring of wireless mobile monitoring development is bound to come. So how big is the mobile surveillance market? Below we take the bus mobile monitoring as an example for analysis.

In recent years, bus mobile monitoring applications can be said to be in full swing, and the installation of mobile surveillance cameras on buses has become a common practice. Up to now, there have been more than 20,000 mobile surveillance cameras installed in Shenzhen buses, and 3 buses have been installed for each bus, and they are connected to the police 110. The images taken by the camera can be transmitted to the public security command center simultaneously. At the end of 2007, Guangzhou installed cameras for more than 8,000 buses in the city. The total number of cameras installed will exceed 26,000. Dongguan, Foshan and other cities in the Pearl River Delta have also installed mobile surveillance cameras for the city's buses. Most of the buses are installed in three, and some are installed in four and two. Dongguan installed mobile surveillance cameras on 6,000 buses in the city, with a total investment of more than 100 million yuan. How many buses are there in the country? It is impossible to count. There are only nine cities in Beijing, Shanghai, Shenzhen, Guangzhou, Tianjin, Chengdu, Wuhan, Xi'an and Chongqing. The total number of buses exceeds 100,000, and the bus mobile monitoring market is big. Imagine it. In addition, there is a taxi mobile surveillance market, no less than bus mobile video surveillance.

In recent years, mobile video surveillance of law enforcement vehicles has quietly emerged. Due to the need for on-site law enforcement, many government law enforcement agencies such as the public security, judicial, traffic police, and urban management have installed mobile video surveillance systems for law enforcement vehicles. Taking Guangdong as an example, according to the “Three-Year Plan for the Construction of the Social Security Video Surveillance System of Guangdong Province (2012-2014)”, more than 70% of the duty police cars in Guangdong Province should install the vehicle moving image monitoring system to realize the on-site law enforcement dynamics. monitor. In the future, this demand will expand and extend to more provinces and cities and more law enforcement units, so this market cannot be ignored.

So, in the next few years, can mobile monitoring be equal to fixed monitoring and IP monitoring? Can mobile monitoring become the protagonist of the surveillance market? Let us wait and see.

How mobile surveillance faces HD issues

IP high-definition monitoring is better. At this stage, IP million HD (720P@30fps) transmission can be pressed between 2-3 Mbps, and 1080P@30fps can also be controlled under 6 Mbps bandwidth traffic control, which is for IP high-definition transmission. The burden of storage can be said to be greatly reduced. However, compared with the conventional monitoring device transmission, the current basic 720P specification calculates that the code stream is about twice that of D1 and the bandwidth reaches about 3M. When 1080P is used, the code stream is five times that of D1, and the bandwidth used is about 6M, the same is true for storage that occupies hard disk capacity. Since the investment in high-definition camera equipment has doubled compared with the previous CIF and D1 cameras, so has other accessory products, especially the cost of storage equipment has increased.

At present, most of the relevant policies for promoting video surveillance equipment in various places require clarity above D1. HD applications mainly rely on the promotion of large-scale government-related projects. Under the pressure of unsustainable land finance, local governments are very nervous. Government-funded or government-funded projects, and the number of monitoring projects (such as Safe City, Intelligent Transportation, Safe Campus, Ping An Hospital, etc.) that need to be implemented are large, and the amount of funds required is enormous. It is only necessary to minimize the deployment of HD cameras. As the construction of safe cities goes deeper into the 3rd and 4th tier cities, the funding problem may be even greater. The same is true for user units that must install video surveillance equipment. The lack of acquisition funds and operating expenses is the biggest obstacle to the popularity of high-definition video surveillance equipment.

There are few people on duty, and it is impossible to pay attention to so many video images for a long time and continuously, and the clear images are only rushed through, and the security state of the protection target cannot be judged by the real-time image. Only talk about "system equipment can be done", regardless of "operators can do it", in essence, can not achieve the system goals required by users, this is one of the key issues of the current technical defense engineering. Intelligently judging the security status is the current urgent practical requirement, and is the key to improving the engineering prevention effectiveness. High-definition is a technical problem that needs to be solved in the intelligent application process. If HD can't produce effects for creating practical smart functions, you can't see the actual effect of HD on solving security problems. You can't see the relationship between HD and intelligence, and users can't "flower." Big Money invests in technology risk funds for high-definition products.

The investigation of the lack of high-definition network cameras in the application reflects the real-time and high-definition display problems, the lack of standardization of the protocol, and the lack of uniform format standards. The main reason for the signal delay on the real-time display is that the bandwidth requirement of the high-definition product is high, the packet loss rate of the IP image signal is too large, and the delay is large when the bandwidth is insufficient. However, the current network transmission cost in China is relatively expensive, and the user is out. Selecting 15FPS transmission for cost considerations results in poor video stream; the protocol is not standard because the coding methods of different manufacturers are different, resulting in compatibility problems of back-end decoding. The partial standards of the proprietary protocol SDK are not uniform, and it is difficult to integrate and integrate. The standard is Another problem that needs to be solved. The national standard "Technical Requirements for Information Transmission, Exchange, and Control of Security Surveillance Video Surveillance Networking System", which was implemented on June 1, 2012, that is, the GB/T28181-2011 standard can solve the basic problems of high-definition video and existing system integration, but it It's just a standard that allows video surveillance to be basically interoperable in a wide range. Due to network transmission, video delay, network frame loss, insecure video data, and massive storage of data have made some users discouraged. Therefore, network HD can only achieve better development if it fully solves the problems of network delay, mass storage, and integration with intelligent analysis.

The progress of using mobile HD monitoring can explain the problem. Although the bandwidth of 3G is much higher than that of 2G and 2.5G, since the bandwidth of 3G is to bear the uplink and downlink transmission tasks, and one base station may have multiple users working at the same time, the speed of terminal movement will also affect. Transmission speed (3G can support about 2M/sec, 384K/sec and 144K/sec transmission speeds in indoor, outdoor and driving environments), resulting in bandwidth uncertainty in wireless transmission. Even 3G networks transmit CIFs. Image, a base station can also not exceed 3 monitoring points. The customer priority of the 3G operator is transmitted in the order of the voice client, the priority customer, and the ordinary data client, and the transmission of the ordinary mobile monitoring user is unstable.

At present, 3G network speed can only be used as an auxiliary transmission means for monitoring. The operating cost of the mobile phone monitoring system includes the broadband Internet access fee of the video source, the mobile phone viewing traffic fee, and the monitoring system operating fee. In the environment of 3G network, high-definition monitoring cannot be promoted at all. Even China Mobile's 4G network test data shows that the average downlink speed is 40Mbps and the average uplink speed is 18Mbps. It is still very difficult to promote HD for the same reasons as the 3G system.

About mobile monitoring

Mobile monitoring refers to the professional video surveillance products that are transmitted through the wireless form or transmitted through the wireless or network. It can be received and viewed through mobile. For example, mobile phones or computers can monitor remote real-time dynamic pictures. Simpler, more convenient, and more timely monitoring solutions for launch and mobile reception. Mobile monitoring can be said to be a product of the close integration of wireless network technology with traditional security monitoring technology.

Mobile surveillance products can be broadly classified into two categories: one is to monitor fixed or non-fixed locations through wirelessly transmitted mobile monitoring devices, such as law enforcement vehicles that carry surveillance cameras through surveillance cameras mounted on the roof or through law enforcement personnel. Real-time image acquisition on the law enforcement site; second, through mobile terminal devices (such as mobile phones), obtain images captured by fixed surveillance cameras at fixed locations and locations, such as 3G mobile phone monitoring. At present, the main forms of mobile monitoring products are: mobile phone (or mobile terminal) monitoring, bus mobile monitoring, vehicle mobile monitoring (mainly law enforcement vehicles), law enforcement recorders, mobile individual equipment.