In 2011, the security industry continued to grow rapidly. The video surveillance industry's 23% growth rate exceeded the GDP growth rate by nearly 2 times. Rapid growth represents an increase in the importance of the industry and the rapid innovation of new technologies. At the 2011 Shenzhen Ambrance Fair, the endless stream of new technologies and new ideas gave everyone a sense of “squandering for fascinating eyesâ€. Among the many hot words, we are more familiar with the "high-definition", "networking", "smart", "standardization", "security", there are many we are not familiar with "960H", "2M+", "HD-SDI "," "Cloud computing" and so on. Of course, chaos is also a criterion for the prosperity of the industry. However, as a medical user, how to grasp the industry trend in this chaos and choose a product that is practical and applicable to the hospital's own application environment is an extremely realistic problem.
The technical route of hospital security development
At present, the security industry and the hospital's application environment is a typical multigenerational industry. The analog monitoring system born in the 1980s is represented by audio and video matrix, and still has some applications in hospitals; later modular monitoring The system is represented by video encoders and still occupies half of the hospital security. The new generation of digital surveillance systems, represented by network cameras and management platforms, have made great strides.
If the hospital security system five years ago was still in the age of simulation, the newly established medical security system has already been digitized and has evolved towards the intelligent stage.
Each technical route has its own advantages and disadvantages. Although the analog monitoring system has a long history, it is simple in construction, low in cost, and easy to operate, and can also meet the needs of small and simple monitoring systems. However, as the country’s investment in health care systems has been increasing year by year and affected by the imbalance of medical resources, the size of hospitals in major cities has rapidly increased, which has led to the rapid expansion of the scale of hospital security systems. The monitoring system goes beyond the management capabilities of the matrix. Digital surveillance system on the one hand solves the problem of management capabilities. On the other hand, management platform software greatly expands the application capabilities and industry characteristics of the surveillance system. On the other hand, digital surveillance systems have many advantages, but their openness still needs to be improved. Therefore, the choice of new technologies should be more cautious. Among the many new technologies in the security industry, we have selected several representative technologies for analysis.
HD
In the entire video industry, HD has always been a hot technology in recent years. At present, many provincial and municipal medical construction standards clearly require the use of high-definition systems.
HD implementation mode, Digital HD Camera (HD-SDI): A digital HD camera based on the HD-SDI protocol proposed by the HDCCTV Alliance. The main features are clear images, no delay, and transmission over the BNC interface. The application mode is similar to the traditional mode of combination of modules. It consists of an HD-SDI camera, an HD-SDI optical transceiver, an HD-SDI matrix, an HD-SDI encoder, or a DVR. Meet the high-definition monitoring while meeting the original application habits. However, the display and storage of the two systems need to be built separately, and the openness and expansion capabilities are relatively poor. The transmission link overhead is extremely high and the transmission distance is short.
Network high-definition video camera (IPC): Based on the HDTV standard, video encoding and network packaging are used to achieve high-definition real-time image monitoring at 720P, 1080I, and 1080P levels. The main features are the use of standard protocols, transmission via IP interfaces, simple deployment and implementation, unified management and easy expansion, and low construction costs. The mainstream manufacturers all adopt IP high-definition cameras as the main development direction. From the point of view of hospital security application characteristics, preference is given to centralized management and linkage applications. Optional integrated and more feature rich IP network cameras.
The establishment of high-definition systems: Security monitoring is an inevitable trend to the road to high-definition, but it involves the entire system, not only the front-end camera to high-definition, transmission equipment, storage devices, decoding devices, display devices need to be high-definition. Any link that does not meet HD requirements will form a system bottleneck, which will degrade the overall quality of the system.
networking
The basic requirement of network monitoring is information sharing and centralized management. At present, this is the bottleneck of hospital security construction. The construction of the hospital information system is synchronized with the construction of the national informatization system. From the 1980s to the beginning of this century, the main task of the informatization system construction was the construction of the information highway, with digital and network construction as the key points. Therefore, when the highway construction is completed and resources need to be shared, it is found that the multi-phase video surveillance system cannot be managed uniformly. The need for networking and unified management came into being.
Networking is not simply connecting multiple systems through a network. Instead, it establishes a unified management platform and implements resource sharing based on standard protocols. Therefore, the focus of networking applications lies in standards. At present, mainstream security companies are all promoting the standardization of the security industry. The more mainstream domestic standards are ONVIF and national standard GB/T28181.
ONVIF (Open Network Video Interface Forum): An international open network video product standard network interface development forum jointly established by Axis, Bosch and Sony, named ONVIF (Open Network Video Interface Forum). In November 2008, the forum formally released the first edition of the ONVIF specification. The latest version is ONVIF2.2. The ONVIF standard mainly defines the connection interface between the front-end network camera and the back-end management platform and the storage device. More than 80% of the IP surveillance products in the world have achieved the support of the ONVIF standard.
Technical requirements for security, video surveillance, networked system information transmission, exchange, and control (GB/T28181): Leaded by the Ministry of Commerce, TC100, and industry leading manufacturers participate in the development of national standards. It defines two standards for management platform cascading and interconnection. Released at the end of 2011 and has been promoted. It is mainly required that different video surveillance management platforms be networked based on a unified standard. Meet the actual needs of domestic hospitals for monitoring and networking.
Hospitals gradually embark on the road to safety and security
In the past 10 years, the focus of hospital security construction has shifted to building industrial applications on advanced basic platforms. At present, the construction of security monitoring systems is often a simple stacking of security subsystems such as perimeter protection systems, main/passive alarm systems, access control systems, intercom systems, video surveillance systems, and intelligent image analysis systems. The original manual analysis associates security incidents/emergencies reported by the security system with the on-site pictures of the monitoring system. The monitoring personnel have high labor intensity and low work efficiency. In modern wisdom hospitals, an excellent security system, although composed of several relatively independent subsystems, should never be a simple superposition between subsystems, but should be integrated under the unified framework of the security system. Integration, interaction, and become an integral part of the whole. Such a security management system integrated management platform is a large security platform.
The first stage of the construction of the Daan security platform is management. In multiple subsystems such as monitoring, access control, alarm, and patrol, the alarm and patrol system usually has a common output interface, which can be integrated through the switch network management system; the monitoring system is large in scale, but if a platform-level SDK can be provided, It is not difficult to develop; however, the access control system was mainly used in the early stage and has a very high level of confidentiality. Usually, it does not open the interface to the public and only provides query services. Therefore, it has become a major difficulty in security integration. This is why many security platform vendors are access control hardware vendors. The next stage of the construction of the Daan security platform is linkage. Flexible allocation of system resources to achieve mutual coordination and early detection of site problems to avoid accidents. Linkage is not just about technology, but more importantly management.
High-end technology, integration first
In the medical industry, the rapid innovation of security technology not only includes hotspots such as high-definition, networking, and large security platforms, but also rapid adoption of smart, integrated, NVR, panoramic surveillance, intelligent retrieval, cloud computing, and the Internet of Things. The application of various new technologies can improve the ease of use, scalability, and reliability of security systems. There are no absolute advantages or disadvantages for various technologies. The core point is to meet the basic requirements for the construction of security systems: advance prevention, emergency in the event, and playback afterwards.
Security protection system (SPS) securityotectionsystem is an intrusion alarm system, video security monitoring system, and entrance/exit control system composed of security protection products and other related products for the purpose of maintaining public safety; or they may be a combination of subsystems or Integrated electronic system or network.
The technical route of hospital security development
At present, the security industry and the hospital's application environment is a typical multigenerational industry. The analog monitoring system born in the 1980s is represented by audio and video matrix, and still has some applications in hospitals; later modular monitoring The system is represented by video encoders and still occupies half of the hospital security. The new generation of digital surveillance systems, represented by network cameras and management platforms, have made great strides.
If the hospital security system five years ago was still in the age of simulation, the newly established medical security system has already been digitized and has evolved towards the intelligent stage.
Each technical route has its own advantages and disadvantages. Although the analog monitoring system has a long history, it is simple in construction, low in cost, and easy to operate, and can also meet the needs of small and simple monitoring systems. However, as the country’s investment in health care systems has been increasing year by year and affected by the imbalance of medical resources, the size of hospitals in major cities has rapidly increased, which has led to the rapid expansion of the scale of hospital security systems. The monitoring system goes beyond the management capabilities of the matrix. Digital surveillance system on the one hand solves the problem of management capabilities. On the other hand, management platform software greatly expands the application capabilities and industry characteristics of the surveillance system. On the other hand, digital surveillance systems have many advantages, but their openness still needs to be improved. Therefore, the choice of new technologies should be more cautious. Among the many new technologies in the security industry, we have selected several representative technologies for analysis.
HD
In the entire video industry, HD has always been a hot technology in recent years. At present, many provincial and municipal medical construction standards clearly require the use of high-definition systems.
HD implementation mode, Digital HD Camera (HD-SDI): A digital HD camera based on the HD-SDI protocol proposed by the HDCCTV Alliance. The main features are clear images, no delay, and transmission over the BNC interface. The application mode is similar to the traditional mode of combination of modules. It consists of an HD-SDI camera, an HD-SDI optical transceiver, an HD-SDI matrix, an HD-SDI encoder, or a DVR. Meet the high-definition monitoring while meeting the original application habits. However, the display and storage of the two systems need to be built separately, and the openness and expansion capabilities are relatively poor. The transmission link overhead is extremely high and the transmission distance is short.
Network high-definition video camera (IPC): Based on the HDTV standard, video encoding and network packaging are used to achieve high-definition real-time image monitoring at 720P, 1080I, and 1080P levels. The main features are the use of standard protocols, transmission via IP interfaces, simple deployment and implementation, unified management and easy expansion, and low construction costs. The mainstream manufacturers all adopt IP high-definition cameras as the main development direction. From the point of view of hospital security application characteristics, preference is given to centralized management and linkage applications. Optional integrated and more feature rich IP network cameras.
The establishment of high-definition systems: Security monitoring is an inevitable trend to the road to high-definition, but it involves the entire system, not only the front-end camera to high-definition, transmission equipment, storage devices, decoding devices, display devices need to be high-definition. Any link that does not meet HD requirements will form a system bottleneck, which will degrade the overall quality of the system.
networking
The basic requirement of network monitoring is information sharing and centralized management. At present, this is the bottleneck of hospital security construction. The construction of the hospital information system is synchronized with the construction of the national informatization system. From the 1980s to the beginning of this century, the main task of the informatization system construction was the construction of the information highway, with digital and network construction as the key points. Therefore, when the highway construction is completed and resources need to be shared, it is found that the multi-phase video surveillance system cannot be managed uniformly. The need for networking and unified management came into being.
Networking is not simply connecting multiple systems through a network. Instead, it establishes a unified management platform and implements resource sharing based on standard protocols. Therefore, the focus of networking applications lies in standards. At present, mainstream security companies are all promoting the standardization of the security industry. The more mainstream domestic standards are ONVIF and national standard GB/T28181.
ONVIF (Open Network Video Interface Forum): An international open network video product standard network interface development forum jointly established by Axis, Bosch and Sony, named ONVIF (Open Network Video Interface Forum). In November 2008, the forum formally released the first edition of the ONVIF specification. The latest version is ONVIF2.2. The ONVIF standard mainly defines the connection interface between the front-end network camera and the back-end management platform and the storage device. More than 80% of the IP surveillance products in the world have achieved the support of the ONVIF standard.
Technical requirements for security, video surveillance, networked system information transmission, exchange, and control (GB/T28181): Leaded by the Ministry of Commerce, TC100, and industry leading manufacturers participate in the development of national standards. It defines two standards for management platform cascading and interconnection. Released at the end of 2011 and has been promoted. It is mainly required that different video surveillance management platforms be networked based on a unified standard. Meet the actual needs of domestic hospitals for monitoring and networking.
Hospitals gradually embark on the road to safety and security
In the past 10 years, the focus of hospital security construction has shifted to building industrial applications on advanced basic platforms. At present, the construction of security monitoring systems is often a simple stacking of security subsystems such as perimeter protection systems, main/passive alarm systems, access control systems, intercom systems, video surveillance systems, and intelligent image analysis systems. The original manual analysis associates security incidents/emergencies reported by the security system with the on-site pictures of the monitoring system. The monitoring personnel have high labor intensity and low work efficiency. In modern wisdom hospitals, an excellent security system, although composed of several relatively independent subsystems, should never be a simple superposition between subsystems, but should be integrated under the unified framework of the security system. Integration, interaction, and become an integral part of the whole. Such a security management system integrated management platform is a large security platform.
The first stage of the construction of the Daan security platform is management. In multiple subsystems such as monitoring, access control, alarm, and patrol, the alarm and patrol system usually has a common output interface, which can be integrated through the switch network management system; the monitoring system is large in scale, but if a platform-level SDK can be provided, It is not difficult to develop; however, the access control system was mainly used in the early stage and has a very high level of confidentiality. Usually, it does not open the interface to the public and only provides query services. Therefore, it has become a major difficulty in security integration. This is why many security platform vendors are access control hardware vendors. The next stage of the construction of the Daan security platform is linkage. Flexible allocation of system resources to achieve mutual coordination and early detection of site problems to avoid accidents. Linkage is not just about technology, but more importantly management.
High-end technology, integration first
In the medical industry, the rapid innovation of security technology not only includes hotspots such as high-definition, networking, and large security platforms, but also rapid adoption of smart, integrated, NVR, panoramic surveillance, intelligent retrieval, cloud computing, and the Internet of Things. The application of various new technologies can improve the ease of use, scalability, and reliability of security systems. There are no absolute advantages or disadvantages for various technologies. The core point is to meet the basic requirements for the construction of security systems: advance prevention, emergency in the event, and playback afterwards.
Security protection system (SPS) securityotectionsystem is an intrusion alarm system, video security monitoring system, and entrance/exit control system composed of security protection products and other related products for the purpose of maintaining public safety; or they may be a combination of subsystems or Integrated electronic system or network.
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