Abstract
In real-time monitoring, on-line broadcast, distance education and many other areas need to use computer-controlled CCD PTZ camera movements and the focal length, aperture. PTZ camera control system through the computer serial port / parallel port to send control commands to the decoder, then the corresponding decoder control relay and power supply to meet all of the closing clearance to achieve camera movement in the vertical direction, horizontal direction swing This control system used Visual C + + "6.0 communication control PTZ camera to achieve MScomm serial communication control system. Visual C + +" 6.0 was developed under the Windows platform for high-performance serial communication procedure programming language tools, In the PTZ camera control system, plays a central decoder status. This PTZ control system is to encode the operation, through the RS-232 serial interface to issue commands to the decoder, the decoder after receipt of instructions, the correct analysis and control of the disconnect relay closure. Yuntai to control movement in the vertical direction and horizontal direction of the swing
Keywords：Visual C＋＋; yuntai; control system; Serial Communication Port;
