The principle of high speed dome camera is actually less than said, and specifically, the use of high-speed ball "differential precision stepper motor" high-speed ball fast, accurate positioning, rotation. All of which are issued by the cpu command to achieve. Then the camera image, the camera features included in the high-speed ball the cpu, to achieve the control head, when the image transfer out, and is capable of a lot of camera features, such as white balance, shutter, aperture, zoom, on the focus functions while achieving control.
General high-speed ball center of the sphere is divided into parts, parts and accessories part of the shell. Any manufacturer of high-speed ball, there is a package with a rack to one machine movement, control PTZ decoder board and motor systems of the hot core part of the unified, then center of the sphere with the shell with screws or some other way to link up Globe is a core part of the general case there are a variety of appearance, such as the appearance of Pelco, Panasonic appearance, and the appearance of their own design. Are generally made of aluminum alloy shell, there are plastic, aluminum casting and stamping generally divided into two kinds of shell. Better than plastic, aluminum, stamping casting than good. Cover part of the next shell is transparent, transparent cover must be optically transparent cover in order to ensure that no light through rate and image distortion, while also considering anti-aging, anti-sabotage, dust and other issues. Accessories including stand some of the general part, heater parts, hot part of the fan. Bracket includes wall mounting bracket, boom stand, surface mount ceiling, ceiling without stents embedded, general outdoor balls are equipped with fan thermal devices, and heating device only in cold regions have an option, in principle, indoor ball No fan heat and heating parts. Accessories include power supply, 24 volt are generally used for 2 to 3 amps of power transformers.
There are several major high-speed ball hardware components, first the motor, then the slip ring, then the power supply and control board. Drive belt is also very important.
High-speed ball there is a communication problem related to communication protocols and communication problems, communication protocol is a high-speed ball, when communication with the host systems, choice of communication protocols, such as pelco, Manchester, Panasonic, Philips agreements. Communication is the communication protocol used to communicate what way, for example, 485 communication, 232 communication, 422 communication, Coaxitron means of communication, in general, high-speed ball with 485 communication, and communication protocols of each different manufacturers are different.