Since the introduction of the concept of security in China in 1979, after more than 30 years of rapid development, the security market has gradually matured, product performance has become increasingly stable, and functions have become increasingly rich. The customer’s awareness of security brands has also increased. At the same time, due to the lack of innovation capacity and the lack of core technologies, the homogeneity of products is serious. Taking Shenzhen, an important base for security manufacturing, as an example, there are thousands of large and small security companies. Most of them are small in size and weak in strength. Most of them use the appearance of a male model, general-purpose chips, and mature development kits. Their product functions are similar and their performance is relatively high. Poor, can only be killed in the low-end market. How to stand out from this increasingly fiercely competitive "Red Sea", the innovation of products, technologies and services is undoubtedly the most critical.

From the perspective of the development of the security industry in recent years, the trend of networked, digital, integrated, and intelligent security products is inevitable. Future product innovations are the manifestation of this trend. Its innovations generally have the following aspects:

The deep integration of security and 3G is the first year of 3G in China. The nationwide large-scale 3G network construction brings high bandwidth, wide coverage, and a stable and reliable mobile communications network. While this change has changed the way people communicate, it will also have a profound impact on the security industry. Take the smooth and smooth 25fps D1 format video as an example. If MPEG-4 compression coding is used, the bandwidth is about 2M; if H is used. 264 encoding also requires about 1.5M of bandwidth resources. This far exceeds the carrying capacity of a GPRS network with a theoretical bandwidth of only 172.1 Kbit/s. However, the advent of 3G has made wireless video surveillance possible. Take WCDMA as an example, its theoretical downlink rate is as high as 14.4 Mbps/s, and its uplink rate is 5.76 Mbps/s. It can easily implement multi-channel wireless video transmission.

At present, some security manufacturers have developed and completed wireless vehicle-mounted monitoring front-ends and vehicle-mounted video servers. Using the advantages of mobile 3G network convenience and high bandwidth, the front-end video is compressed and then transmitted to the central controller. This new product effectively solves the monitoring problems of vehicles, subways, trains and other vehicles that cable video surveillance cannot match. In addition, 3G can also be applied to the video transmission after the alarm is triggered. The remote alarm information triggers the video response and is transmitted to the user's mobile phone in real time through the 3G network. It can be imagined that the future of home-use anti-theft, child care and other civilian market, security and 3G combined innovative applications will be brilliant.

In the process of digitization and high-definition, we have seized the opportunity. Since the 2009 Expo, the analog-to-digital transition has seen a significant acceleration in the development of SD from the HD. In the security market in 2010, digital high-definition has become the protagonist. How to seize the opportunities, actively innovate in the digital and high-definition trend, and introduce quality products have become the key to seizing the future market.

Digital cameras quickly occupy the market share of analog cameras with their advantages of lossless transmission, reproducibility, and compressed storage. High-definition video captures the details of video surveillance. However, the poor stability and the high resource consumption of bandwidth are the technical problems that need to be overcome urgently. As early as a few years ago, some industry-leading security companies have realized the bright prospects of the high-definition market. For example, Infiniti began to engage in the development of high-definition cameras in 2007, and continued to increase research and development efforts to improve performance and enhance stability. Has formed a series of high-definition product series with excellent performance, high stability and high bandwidth utilization, such as 1.3 million-pixel firing mechanism V6201, 2 million-pixel firing mechanism V6202, 1.3-megapixel fast ball V1771, 200-megapixel integrated machine V6221 and 200 Million CMOS hemisphere V6921/V6941 and other products. After the launch of these products, the market responded fiercely and was recognized by users.

Systematization and integration continue to improve After large-scale safe city construction, face each city as few as tens of thousands, as many as hundreds of thousands or even millions of camera front-end, how to effectively put these belonging to different institutions, have The connection of cameras and control terminals of different uses, so that they can be interconnected, information sharing, will be a huge problem.

In the future market, system-based application requirements are considerable. At present, some communications industry predators are involved in system-level security applications. Using their existing communications networking and large-scale platform management technologies, they have become very successful in the security industry. Grasping this trend and continuing research and development and innovation, the outlook is bound to be very broad.

Grasp the trend of intelligent development The ideal state of the security industry is to take preventive measures. This requires that all illegal activities have been intelligently identified before proceeding. Smart home is an important embodiment of this idea, which means that the entire system is intelligent and perimeter-proof. Front-end image processing, whether it is a camera or an infrared thermal imager, must have a very high level of intelligence analysis and automatic discrimination. It is necessary to avoid misunderstandings and to avoid misjudgments. Important; the center's operation and control should be able to automatically respond, according to different circumstances, call out the appropriate plan, issued an accurate command to the alarm device; back-end alarm unit, trigger the corresponding external device, such as alarm, light, telephone, SMS And so on, the whole process is automatically completed under unattended conditions.

Future smart protection will bring enormous opportunities and challenges to many security companies. At present, a few manufacturers have launched high-speed domes with intelligent analysis and identification capabilities. It is believed that with the deepening of the concept of smart home, smart cameras, infrared cameras, intelligent control centers, and alarm equipment will surely be greatly developed.

Tri-network integration brings opportunity for innovation in security operations and services. Tri-network convergence has been in existence for 12 years. Although the multi-interest game has led to slow progress in the actual progress of triple play, the broad three-network convergence does not mean only The physical connection of computers, communications and radio and television networks, but the convergence and interoperability of the three network application layers. Since this year's national level put forward the full implementation of triple play in 2013-2015, the application level business communication has been significantly improved. This has made it possible for many companies to participate in security operations and services.

The existing security products basically adopt a simple operation mode of purchase, installation, and use. After the triple play, the security industry is expected to develop a brand-new business model. As in the existing mobile communications industry, operators provide a video surveillance network environment. End users do not have to pay for expensive equipment alone. Resources, that is, access to existing networks, operators obtain continuous profits through user's paid rent and value-added services. Today, this innovative operating model in the field of security has attracted the attention of many companies.

In addition, the deepening of the concept of the Internet of things, cross-integration of security and other industries, and competition have brought many opportunities for the innovation and development of the security industry.

At the same time, it should be noted that since the development of the security industry, technology applications have emerged in an endless stream, but the formulation of relevant standards has lags behind. In the early stage of security development, enterprises were fighting each other and failed to form a unified technical specification. For example, a certain brand of control equipment can not control another brand's front end, a certain brand of management software can not be compatible with another brand of network equipment, even for DVR and other storage devices, different manufacturers of compression format and player software Can not be universal. This has caused great obstacles to future equipment upgrades and platform interoperability. Since there is no uniform standard, the technological innovation of enterprises also lacks opportunities for communication and cooperation, which is very unfavorable for the development of the industry.

What is gratifying is that the large number of interconnection and intercommunication requirements in the security project have made the voice of standardization louder and louder. As the market continues to expand, the security industry has emerged a number of leading companies, and it is time to push for the establishment of industry standards and technical specifications. It is believed that in the future security market, with uniform standards and the active participation of many security companies, the innovation of products and services is bound to be wonderful.

Globe Valve

The globe valve is used to cut off the flow of the medium. The globe valve is suitable for frequently opened occasions. The sealing parts of the globe valve are the disc and the valve seat. In order to make the globe valve close tightly, the mating surface of the disc and the valve seat should be grinding or using gaskets. The sealing surface can also be inset with bronze, stainless steel and other corrosion-resistant and wear-resistant materials. The disc and stem of the globe valve are connected with each other, so that the disc and stem are closely fitted. The lifting of the disc of the globe valve is generally controlled by the stem. The upper part of the stem of the globe valve is the handwheel, and the middle part is the thread and packing sealing section. The role of the packing is to prevent the internal medium of the valve body from leaking along the stem.

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