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- - hieve the best attitude adjustment as long as the lock after agencies working on it. Electric head scan monitor applies to a wide range, it can e*pand the camera's monitor range. Currently these two types of cloud platform widely used in various places, fi*ed dome apply to small-scale monitoring; electrical head scan monitor applies to a wide range, it can e*pand the camera's monitor range. Electric head is implemented by the two force motor, motor accepts signals from the controller to run precise positioning. Under the action of control signals, cloud on the camera can automatically scan monitoring area, also available at the control centre duty officer manipulated by tracking and monitoring of objects. As head of stepping motor rotation device, reliability of its work directly affects the quality of pan/tilt.
This we will design a PTZ control device based on AT89S52 microcontroller. The appliance can automatically or manually moved up and down and horizontal rotation. When the angle or height e*ceeds a predetermined limit position, head stop and sound and light alarm, and automatically track on a range of light sources, for accurate positioning when you e*ceed a preset range, auto alarm. Through the keyboard pressed key realization of automatic and manual control for pan/tilt switch, LM297 and LM298 integrated chip driving stepping motor, use L7805CV and L7812CV chips as a three-Terminal integrated linear regulated power supply, LCD liquid crystal display precise PTZ current location is displayed.
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Key words: pan/tilt control; AT89S52 microcontroller and LCD flat pan