With the continuous popularization and development of video surveillance networking systems, network cameras are increasingly used in surveillance systems, especially in the era of high-definition, which accelerates the development and application of network cameras. At the same time, as people's needs continue to increase, the network camera itself continues to improve and improve in technology and performance, and new applications are rapidly developing.
The advantages of surveillance cameras
First, excellent network function: Network is the trend of the times, is the sign of intelligent architecture, digital equipment must be developed to integrate with ubiquitous network transmission.
Second, powerful image data processing capabilities: At the same time receive, display, processing (stored in the local hard drive and sent to various clients), all of which are dependent on the host's processing power. Therefore, the powerful image data processing capability is the strong foundation for the job requirements of this system.
Third, superior stability: Stability is a problem that every owner is very concerned about. After a well-designed monitoring equipment installation system with complete functions has lost the cornerstone of stability, its practicality is greatly reduced. At the beginning of the design, the program repeatedly compares and measures the host selection problem. The stability of the continuous operation of the host is taken as a basic indicator of host configuration.
Fourth, excellent digital image compression processing technology: This is the basic indicator to measure the advanced level of digital surveillance equipment installed host technology, only a good solution to the image compression problem, can be a good digital image technology applied to the monitoring equipment installation field .
Fifth, the integrated system function design: Only after integrating the original analog system to rely on complex hardware connections to achieve a variety of local functions, can we truly reflect the unique advantages of digital systems, in order to further develop the potential of digital systems, in order to Multi-functional and digital based on intelligence.
Sixth, good scalability, upgradeability: the rapid development of modern technology, any user does not want to invest today to build the system to the ranks of being eliminated tomorrow, so that scalability, or that is scalable Sex is a problem that users have to notice in the early stages of planning. The strong scalability and good scalability are the unique advantages of digital systems.
Surveillance camera performance identification
For those who work in the field of security monitoring, no matter who they are, I am afraid that when they enter the industry, they are confused by a pile of dazzling data. What kind of camera is a good camera? What kind of imaging standards can meet our shooting requirements? Or what kind of lens can guarantee better imaging quality? Perhaps this is a professional issue that plagues a new security guard. Here, we use the camera's main performance indicators to meticulously recognize some features of the camera to help security personnel better judge the characteristics of a camera.
First, the pixel value pixel is a tiny photosensitive material installed on the imaging device. The more pixels, the higher the image resolution and the clearer. Therefore, the number of pixels is a major indicator of camera imaging quality. Because the camera's working principle is very different from that of a camera, there is also a distinction between “dynamic pixels†and “static pixelsâ€. Therefore, unlike cameras, the configurations of millions or even tens of millions of pixels are different. Under normal circumstances, ordinary The camera's number of pixels reaches 40W to meet the basic shooting requirements. For high-definition cameras, 200W pixels can also meet the shooting needs of special circumstances.
Second, the horizontal resolution Horizontal resolution is a measure of image clarity standards, usually represented by the number of lines (ie TV lines, TVL). One television line is 1.33 pixels when interlaced. In the surveillance camera, both the pixel value and the horizontal resolution are the main indicators for measuring the sharpness of the picture. Under normal circumstances, only the horizontal definition index exceeds 1080i (2 million pixels) and 720p (92 million pixels) can be called high-definition imaging.
Third, the minimum illuminance The minimum illuminance, also known as the sensitivity, it is a measure of camera light sensitivity. To put it bluntly, surveillance cameras can see images in dark conditions. Its imaging effect is related to the aperture of the lens. In fact, the representation of the minimum illumination allows us to judge very well. For example, when we use the F1.2 lens, if the shooting ambient brightness is as low as 0.04lx, the camera output video signal amplitude is 50% of the maximum amplitude, that is to reach 350mV, so the minimum illumination of this camera is It is 0.04lx/F1.2. In general, a camera with a minimum illumination less than 0.lx/F1.2 can be called a camera with a low illumination function.
Fourth, the shooting target surface The shooting target surface is also called the scanning area, which is the size of the imaging device. The current target size is expressed in inches, which is the diagonal length of the image sensor. To date, the camera target has gradually progressed from 1/2 inch to 1/4 inch. Although theoretically, the smaller the size of the target surface is, the higher the content is, but compared with the 1/4-inch target surface, 1/2 inch has more light passing, and the 1/4-inch device has Greater depth of field, therefore, the specific merit depends on the shooting environment.
The advantages of surveillance cameras
First, excellent network function: Network is the trend of the times, is the sign of intelligent architecture, digital equipment must be developed to integrate with ubiquitous network transmission.
Second, powerful image data processing capabilities: At the same time receive, display, processing (stored in the local hard drive and sent to various clients), all of which are dependent on the host's processing power. Therefore, the powerful image data processing capability is the strong foundation for the job requirements of this system.
Third, superior stability: Stability is a problem that every owner is very concerned about. After a well-designed monitoring equipment installation system with complete functions has lost the cornerstone of stability, its practicality is greatly reduced. At the beginning of the design, the program repeatedly compares and measures the host selection problem. The stability of the continuous operation of the host is taken as a basic indicator of host configuration.
Fourth, excellent digital image compression processing technology: This is the basic indicator to measure the advanced level of digital surveillance equipment installed host technology, only a good solution to the image compression problem, can be a good digital image technology applied to the monitoring equipment installation field .
Fifth, the integrated system function design: Only after integrating the original analog system to rely on complex hardware connections to achieve a variety of local functions, can we truly reflect the unique advantages of digital systems, in order to further develop the potential of digital systems, in order to Multi-functional and digital based on intelligence.
Sixth, good scalability, upgradeability: the rapid development of modern technology, any user does not want to invest today to build the system to the ranks of being eliminated tomorrow, so that scalability, or that is scalable Sex is a problem that users have to notice in the early stages of planning. The strong scalability and good scalability are the unique advantages of digital systems.
Surveillance camera performance identification
For those who work in the field of security monitoring, no matter who they are, I am afraid that when they enter the industry, they are confused by a pile of dazzling data. What kind of camera is a good camera? What kind of imaging standards can meet our shooting requirements? Or what kind of lens can guarantee better imaging quality? Perhaps this is a professional issue that plagues a new security guard. Here, we use the camera's main performance indicators to meticulously recognize some features of the camera to help security personnel better judge the characteristics of a camera.
First, the pixel value pixel is a tiny photosensitive material installed on the imaging device. The more pixels, the higher the image resolution and the clearer. Therefore, the number of pixels is a major indicator of camera imaging quality. Because the camera's working principle is very different from that of a camera, there is also a distinction between “dynamic pixels†and “static pixelsâ€. Therefore, unlike cameras, the configurations of millions or even tens of millions of pixels are different. Under normal circumstances, ordinary The camera's number of pixels reaches 40W to meet the basic shooting requirements. For high-definition cameras, 200W pixels can also meet the shooting needs of special circumstances.
Second, the horizontal resolution Horizontal resolution is a measure of image clarity standards, usually represented by the number of lines (ie TV lines, TVL). One television line is 1.33 pixels when interlaced. In the surveillance camera, both the pixel value and the horizontal resolution are the main indicators for measuring the sharpness of the picture. Under normal circumstances, only the horizontal definition index exceeds 1080i (2 million pixels) and 720p (92 million pixels) can be called high-definition imaging.
Third, the minimum illuminance The minimum illuminance, also known as the sensitivity, it is a measure of camera light sensitivity. To put it bluntly, surveillance cameras can see images in dark conditions. Its imaging effect is related to the aperture of the lens. In fact, the representation of the minimum illumination allows us to judge very well. For example, when we use the F1.2 lens, if the shooting ambient brightness is as low as 0.04lx, the camera output video signal amplitude is 50% of the maximum amplitude, that is to reach 350mV, so the minimum illumination of this camera is It is 0.04lx/F1.2. In general, a camera with a minimum illumination less than 0.lx/F1.2 can be called a camera with a low illumination function.
Fourth, the shooting target surface The shooting target surface is also called the scanning area, which is the size of the imaging device. The current target size is expressed in inches, which is the diagonal length of the image sensor. To date, the camera target has gradually progressed from 1/2 inch to 1/4 inch. Although theoretically, the smaller the size of the target surface is, the higher the content is, but compared with the 1/4-inch target surface, 1/2 inch has more light passing, and the 1/4-inch device has Greater depth of field, therefore, the specific merit depends on the shooting environment.
We offer a complete range of BS table flanges for use with OD tube and nominal bore pipe in carbon steel and stainless steel to tables D, E, F, and H. Specials can be manufactured to customers' special requirements. We offer a range of ASA 150LB raised face, weld neck, blind and slip-on flanges in grades A105, Q235 and 304, 316 to ASTM A182 specification.
BS Flanges,BS4504 Flanges,Steel Forged Flanges,BS 4504 Carbon Steel Flanges
Shandong Zhongnuo Heavy Industry Co.,Ltd. , https://www.zhongnuoflanges.com