Although the digital matrix has network delays, large coding and decoding losses, and large network bandwidth consumption, these problems will become the bottleneck restricting the development of the digital matrix as the security industry becomes more sophisticated and networked. Major matrix manufacturers also started to improve in different aspects.
First, stability (modular design + redundant protection + hot swap)
Whether it is an analog matrix or a digital matrix, it is required to be based on the stability of the system. Modularization is to make each function into a card, what function is required to insert what card to the motherboard. Zhong Renxiang of Zhejiang Red Apple affirmed the modular design: “The modular design of the matrix product improves the stability and reliability of the product as a whole, ensuring the scalability and maintainability of the hardware and the single-board plug-and-play. It can meet the expansion of the input and output of massive video signals in the project, making the matrix more powerful in various large and medium-sized security areas.The modular design and the standardized design of the interface protocol bring great convenience to maintenance and upgrade, and is easy to use. Match future business."
However, the modular design also increases the number of connection nodes inside the device, and the nodes are the most likely to cause poor contact, so the overall maintenance costs will also increase. Many manufacturers also protect matrix data through redundant hot backup and hot plugging. With dual power supply redundancy, CPU redundancy, etc., when one power supply or CPU fails, the other standby power supply and CPU can immediately take over its work. Yuan Yuan of Zhejiang Dahua shares concluded on how to ensure the stability of the matrix: "First, modularity, hot-plugging, and redundant design of system functions can improve stability and reliability, such as dual power redundancy and CPU redundancy. Modular design and hot-plugging function ensure that if a certain module of the system is damaged, it will not cause the whole machine to be stopped and repaired; secondly, protecting the signal interface and power supply in the design can also improve the overall stability of the system, such as data signals. Optical isolation protection, power supply lightning protection, surge protection design, etc. Finally, a higher level component can be selected to ensure stability based on the product's use environment and customer requirements, such as the target customer group of a certain product has system stability. Beyond conventional requirements, some higher-level components than conventional products must be considered when designing the product, and the cost will also increase."
Second, compatibility (unified agreement)
The input and output signals of the analog matrix are single, only CVBS standard interfaces, so there is no compatibility issue. The high-definition digital matrix often contains a variety of signal interfaces such as VGA/DVI/SDI/YPbPr, which can easily cause compatibility issues with various signals. Jia Chengzhi of Shanghai Giant Vision analyzed: “The mixed matrix needs to identify the mode of the signal to access, resolution conversion, etc. Then the information is decoded. If it is not done well, only a limited number of high-definition formats can be identified. "In addition to network signals, the format of data encoding is more diverse and it is also more prone to compatibility issues.
Because each manufacturer's products are different, the switching protocols of multiple manufacturers' equipments are also different, and they cannot be controlled by a unified control protocol. Zhong Renxiang of Zhejiang Red Apple said: “At present, there are numerous matrix products, and the control protocols are not unified. In the sense of being completely compatible with each other's products, there are relatively few, and practical applications in the project will also find that it is completely compatible with well-known foreign brands. The matrix manufacturers agree that the industry must establish a consistent protocol format, which is mainly reflected in video editing. The standardization of the decoding technology, the standardization between networked signaling and interfaces, the standardization of interfaces between service applications and management, etc., in the entire industry, is reflected in the standardization of interfaces between different levels by different manufacturers. In particular, the network video signal encoding format, if all manufacturers follow a unified agreement, different manufacturers of products may be better compatible to achieve interconnection.
Third, functional diversity and platform
Since the development of the matrix, in addition to basic video switching, image inspection, and other functions, the current matrix will also have platform functions such as video processing, video retrieval, and intelligent analysis. Yuan Hua of Zhejiang Dahua summarized the reasons for the diversification of matrix functions and platform: As the current video signals are diversified, the matrix as a switching device for video signals at the convergence point must be compatible with a variety of signals and network signals at the same time. There are great differences between the signal processing methods of other cable accesses such as SDI/DVI/VGA/CVBS and so on. Therefore, a variety of signal processing modules need to be designed. Therefore, the functions of the matrix are becoming increasingly diverse. The scale of the monitoring system is getting bigger and bigger, and the number of video channels is increasing. This also puts forward higher and higher requirements on the integration level of convergence devices such as the matrix. The increase in the requirements for system integration will inevitably lead to a single device. A very good example of the requirements of diversified functions is that many matrix products integrate optical transmission functions and large-screen splicing functions into the platform system.
Finally, and at the same time, the most important point is that the development of safe cities, smart cities, and Internet of Things technology has made video surveillance systems more and more popular for intelligent applications. The available video signals have evolved to the point where today's machine equipment is required to provide more upper-layer applications based on original video signals; in the face of more and more massive devices and information, users increasingly need to use intelligent applications to replace them with machines. Manpower assists in the processing of information. Artificial intelligence can process information such as identification, statistics, induction, and excavation, assisting users in decision-making, and freeing them from all kinds of labor such as artificial video inspection, monitoring, and equipment maintenance. As a result, the matrix has also shifted from providing only raw video signals and switching functions to providing more upper-layer applications in the early days, loading more application requirements on the basis of providing video signal exchange and transmission, thereby prompting the development of matrix platforms.
Fourth, strengthen networking
The application of the Internet has made the world a “global villageâ€. In the field of security, the network makes remote monitoring possible. The analog matrix mainly depends on the coaxial cable for the transmission of baseband analog signals, and its transmission distance is short. It is more than sufficient for large-scale industries such as Pingan City and ports. The digital matrix cascades the monitoring centers over the network to implement multi-level privilege control management. The matrix network cascading system consists of a central matrix and multiple node matrices. Each matrix has an independent IP address and data is exchanged through the Ethernet port. The node matrix uploads the local video to the central matrix, and the central matrix can perform image switching and control of the cameras of all the node matrices. For large-scale projects such as the Safe City category, matrix networking enables remote monitoring and cross-regional calls.
We offer prototyping service, also high volume production capability. Whatever you need a very small batch for R&D, or cost down project with high volume. It will be warmly welcome.
First, stability (modular design + redundant protection + hot swap)
Whether it is an analog matrix or a digital matrix, it is required to be based on the stability of the system. Modularization is to make each function into a card, what function is required to insert what card to the motherboard. Zhong Renxiang of Zhejiang Red Apple affirmed the modular design: “The modular design of the matrix product improves the stability and reliability of the product as a whole, ensuring the scalability and maintainability of the hardware and the single-board plug-and-play. It can meet the expansion of the input and output of massive video signals in the project, making the matrix more powerful in various large and medium-sized security areas.The modular design and the standardized design of the interface protocol bring great convenience to maintenance and upgrade, and is easy to use. Match future business."
However, the modular design also increases the number of connection nodes inside the device, and the nodes are the most likely to cause poor contact, so the overall maintenance costs will also increase. Many manufacturers also protect matrix data through redundant hot backup and hot plugging. With dual power supply redundancy, CPU redundancy, etc., when one power supply or CPU fails, the other standby power supply and CPU can immediately take over its work. Yuan Yuan of Zhejiang Dahua shares concluded on how to ensure the stability of the matrix: "First, modularity, hot-plugging, and redundant design of system functions can improve stability and reliability, such as dual power redundancy and CPU redundancy. Modular design and hot-plugging function ensure that if a certain module of the system is damaged, it will not cause the whole machine to be stopped and repaired; secondly, protecting the signal interface and power supply in the design can also improve the overall stability of the system, such as data signals. Optical isolation protection, power supply lightning protection, surge protection design, etc. Finally, a higher level component can be selected to ensure stability based on the product's use environment and customer requirements, such as the target customer group of a certain product has system stability. Beyond conventional requirements, some higher-level components than conventional products must be considered when designing the product, and the cost will also increase."
Second, compatibility (unified agreement)
The input and output signals of the analog matrix are single, only CVBS standard interfaces, so there is no compatibility issue. The high-definition digital matrix often contains a variety of signal interfaces such as VGA/DVI/SDI/YPbPr, which can easily cause compatibility issues with various signals. Jia Chengzhi of Shanghai Giant Vision analyzed: “The mixed matrix needs to identify the mode of the signal to access, resolution conversion, etc. Then the information is decoded. If it is not done well, only a limited number of high-definition formats can be identified. "In addition to network signals, the format of data encoding is more diverse and it is also more prone to compatibility issues.
Because each manufacturer's products are different, the switching protocols of multiple manufacturers' equipments are also different, and they cannot be controlled by a unified control protocol. Zhong Renxiang of Zhejiang Red Apple said: “At present, there are numerous matrix products, and the control protocols are not unified. In the sense of being completely compatible with each other's products, there are relatively few, and practical applications in the project will also find that it is completely compatible with well-known foreign brands. The matrix manufacturers agree that the industry must establish a consistent protocol format, which is mainly reflected in video editing. The standardization of the decoding technology, the standardization between networked signaling and interfaces, the standardization of interfaces between service applications and management, etc., in the entire industry, is reflected in the standardization of interfaces between different levels by different manufacturers. In particular, the network video signal encoding format, if all manufacturers follow a unified agreement, different manufacturers of products may be better compatible to achieve interconnection.
Third, functional diversity and platform
Since the development of the matrix, in addition to basic video switching, image inspection, and other functions, the current matrix will also have platform functions such as video processing, video retrieval, and intelligent analysis. Yuan Hua of Zhejiang Dahua summarized the reasons for the diversification of matrix functions and platform: As the current video signals are diversified, the matrix as a switching device for video signals at the convergence point must be compatible with a variety of signals and network signals at the same time. There are great differences between the signal processing methods of other cable accesses such as SDI/DVI/VGA/CVBS and so on. Therefore, a variety of signal processing modules need to be designed. Therefore, the functions of the matrix are becoming increasingly diverse. The scale of the monitoring system is getting bigger and bigger, and the number of video channels is increasing. This also puts forward higher and higher requirements on the integration level of convergence devices such as the matrix. The increase in the requirements for system integration will inevitably lead to a single device. A very good example of the requirements of diversified functions is that many matrix products integrate optical transmission functions and large-screen splicing functions into the platform system.
Finally, and at the same time, the most important point is that the development of safe cities, smart cities, and Internet of Things technology has made video surveillance systems more and more popular for intelligent applications. The available video signals have evolved to the point where today's machine equipment is required to provide more upper-layer applications based on original video signals; in the face of more and more massive devices and information, users increasingly need to use intelligent applications to replace them with machines. Manpower assists in the processing of information. Artificial intelligence can process information such as identification, statistics, induction, and excavation, assisting users in decision-making, and freeing them from all kinds of labor such as artificial video inspection, monitoring, and equipment maintenance. As a result, the matrix has also shifted from providing only raw video signals and switching functions to providing more upper-layer applications in the early days, loading more application requirements on the basis of providing video signal exchange and transmission, thereby prompting the development of matrix platforms.
Fourth, strengthen networking
The application of the Internet has made the world a “global villageâ€. In the field of security, the network makes remote monitoring possible. The analog matrix mainly depends on the coaxial cable for the transmission of baseband analog signals, and its transmission distance is short. It is more than sufficient for large-scale industries such as Pingan City and ports. The digital matrix cascades the monitoring centers over the network to implement multi-level privilege control management. The matrix network cascading system consists of a central matrix and multiple node matrices. Each matrix has an independent IP address and data is exchanged through the Ethernet port. The node matrix uploads the local video to the central matrix, and the central matrix can perform image switching and control of the cameras of all the node matrices. For large-scale projects such as the Safe City category, matrix networking enables remote monitoring and cross-regional calls.
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