High-speed ball is a kind of intelligent camera front end, full name is high-speed intelligent dome camera, or integrated high-speed ball smart ball, or simply referred to as fastball, referred to as high-speed ball. The high speed dome is the most sophisticated camera front end of the surveillance system and has the best overall performance. It is complex to manufacture and expensive, and can adapt to high density and most complex monitoring occasions.
High Speed ​​Ball Features
The high-speed ball has several basic functions. The first is the fast operation speed, the second is the smooth operation, and the third is the accurate positioning.
1. High-speed function: Preset position speed is required to emphasize fast, basically reaching over 250 degrees/second; the second manual speed emphasizes smoothness, the control is sensitive and flexible, can not be too fast, can't be stiff, and supports variable speed.
2. Preset function: It must have more than 64 preset positions. At the same time, the preset position must be accurate. The preset position can also be memorized after power off.
3, cruise scan: must be able to set the high-speed ball can cruise scan function between the various preset positions.
Speedball has some advanced features:
1. Trajectory memory function: It is required that the high-speed ball can store multiple arbitrary trajectory routes, and at the same time, the trajectory path can be invoked through settings.
2. Menu display function: It can display a complete operation menu, through the menu to modify the operating speed, preset dwell time, operating mode, etc., through the menu can modify the camera parameters, and programming, automatic tracking, privacy shielding Other functions.
3, comes with alarm input and output: an alarm input and output module is added to the high-speed ball.
4, network high-speed ball, fiber optic high-speed ball: In the high-speed ball and then integrated network video server module or optical module.
High-speed ball application notes 1, high-speed ball is not suitable for any occasion
Of course, high-speed domes are not suitable for any occasions. High-speed domes are affected by their own construction and are not suitable for some occasions.
At present, most of the high-speed domes on the market have CCD dimensions of 1/4â€, which determines their photoelectric conversion efficiency is lower than that of 1/3†CCD gun cameras; in addition, due to the limited size of high-speed domes , And it also needs to accommodate larger zoom optical zoom lens, which determines the size of its optical zoom lens smaller. In addition to almost all fastballs, the optical lens consists of several lens groups, through the refraction of light between these lens groups, reflections, etc., so as to achieve the corresponding optical zoom magnification. Obviously, when the light is refracted and reflected in the lens group, some of the energy will be lost, and therefore the light that enters the CCD will be weak, which also affects the efficiency of photoelectric conversion. Therefore, for applications where there is insufficient illumination, or when it is required that both day and night can be clearly imaged and there is no adequate lighting at night, smart speed domes are not suitable. For example: In some environments where large focal lengths (above 200mm) and poor illumination are required, if a camera with pan/tilt+high performance or large zoom lens is equipped, the effect will be better than high-speed smart domes. Therefore, the application of high-speed domes must also make appropriate judgments based on the actual monitoring environment.
2, selection avoids blind pursuit of high performance, full-angle, high-speed rotation
In the selection of high-speed ball, it is necessary to choose according to actual needs, and to avoid blindly pursuing its high performance, full-angle, high-speed rotation and other performance.
For example, when designing a scheme, a monitoring point needs to install a fastball. According to the actual installation and use environment, when the fastball is used in a wall or column installation, it can be selected from a non-full angle (full-angle 360 ​​degrees horizontal direction). Degree, 180 degree rotation in the vertical direction) Rotating fastball. Just think of what happens when the wall-mounted fastball has a horizontal rotation greater than 180 degrees or a vertical selection greater than 90 degrees. - Will be a wall or ground, and this type of screen is meaningless for monitoring. This kind of installation method can choose the economical fast ball that rotates horizontally at 350 degrees and vertical at 90 degrees.
Proper selection of fastball can not only achieve the same monitoring effect, but also significantly reduce system costs. For example, in terms of the configuration of the dome, the rotation angles of the two types of domes differ by only 10 degrees, but their costs may differ by more than 40% due to the different rotating motors. Therefore, in the selection of fastball, it is also necessary to consider the characteristics of monitoring distance and monitoring target, and different optical zooming devices can be selected according to different monitoring distances.
High Speed ​​Ball Features
The high-speed ball has several basic functions. The first is the fast operation speed, the second is the smooth operation, and the third is the accurate positioning.
1. High-speed function: Preset position speed is required to emphasize fast, basically reaching over 250 degrees/second; the second manual speed emphasizes smoothness, the control is sensitive and flexible, can not be too fast, can't be stiff, and supports variable speed.
2. Preset function: It must have more than 64 preset positions. At the same time, the preset position must be accurate. The preset position can also be memorized after power off.
3, cruise scan: must be able to set the high-speed ball can cruise scan function between the various preset positions.
Speedball has some advanced features:
1. Trajectory memory function: It is required that the high-speed ball can store multiple arbitrary trajectory routes, and at the same time, the trajectory path can be invoked through settings.
2. Menu display function: It can display a complete operation menu, through the menu to modify the operating speed, preset dwell time, operating mode, etc., through the menu can modify the camera parameters, and programming, automatic tracking, privacy shielding Other functions.
3, comes with alarm input and output: an alarm input and output module is added to the high-speed ball.
4, network high-speed ball, fiber optic high-speed ball: In the high-speed ball and then integrated network video server module or optical module.
High-speed ball application notes 1, high-speed ball is not suitable for any occasion
Of course, high-speed domes are not suitable for any occasions. High-speed domes are affected by their own construction and are not suitable for some occasions.
At present, most of the high-speed domes on the market have CCD dimensions of 1/4â€, which determines their photoelectric conversion efficiency is lower than that of 1/3†CCD gun cameras; in addition, due to the limited size of high-speed domes , And it also needs to accommodate larger zoom optical zoom lens, which determines the size of its optical zoom lens smaller. In addition to almost all fastballs, the optical lens consists of several lens groups, through the refraction of light between these lens groups, reflections, etc., so as to achieve the corresponding optical zoom magnification. Obviously, when the light is refracted and reflected in the lens group, some of the energy will be lost, and therefore the light that enters the CCD will be weak, which also affects the efficiency of photoelectric conversion. Therefore, for applications where there is insufficient illumination, or when it is required that both day and night can be clearly imaged and there is no adequate lighting at night, smart speed domes are not suitable. For example: In some environments where large focal lengths (above 200mm) and poor illumination are required, if a camera with pan/tilt+high performance or large zoom lens is equipped, the effect will be better than high-speed smart domes. Therefore, the application of high-speed domes must also make appropriate judgments based on the actual monitoring environment.
2, selection avoids blind pursuit of high performance, full-angle, high-speed rotation
In the selection of high-speed ball, it is necessary to choose according to actual needs, and to avoid blindly pursuing its high performance, full-angle, high-speed rotation and other performance.
For example, when designing a scheme, a monitoring point needs to install a fastball. According to the actual installation and use environment, when the fastball is used in a wall or column installation, it can be selected from a non-full angle (full-angle 360 ​​degrees horizontal direction). Degree, 180 degree rotation in the vertical direction) Rotating fastball. Just think of what happens when the wall-mounted fastball has a horizontal rotation greater than 180 degrees or a vertical selection greater than 90 degrees. - Will be a wall or ground, and this type of screen is meaningless for monitoring. This kind of installation method can choose the economical fast ball that rotates horizontally at 350 degrees and vertical at 90 degrees.
Proper selection of fastball can not only achieve the same monitoring effect, but also significantly reduce system costs. For example, in terms of the configuration of the dome, the rotation angles of the two types of domes differ by only 10 degrees, but their costs may differ by more than 40% due to the different rotating motors. Therefore, in the selection of fastball, it is also necessary to consider the characteristics of monitoring distance and monitoring target, and different optical zooming devices can be selected according to different monitoring distances.
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