This paper takes the computer as the center and designs and implements an intelligent security alarm system based on Web Service through parallel and serial port communication control. The system has the functions of on-site monitoring, real-time recording and automatic alarm as well as open network management. Keywords: parallel and serial port; alarm system; network management; With the development of information technology and the actual security needs, people have installed intelligent security systems in many public places for security deployment. Its main purpose is to automatically alarm once an unsafe event occurs. At present, intelligent security systems are mainly integrated systems of computers and peripheral devices as well as software and hardware [1]. Computers control peripheral related devices through serial and parallel ports to achieve deployment, detection and alarm. Starting from practical applications, this paper designs and implements an intelligent security alarm system based on Web Service according to customer requirements of low cost, high performance, easy maintenance and easy upgrade. The system takes the computer as the control center and controls related devices through parallel and serial port connection to achieve on-site monitoring, real-time recording and automatic alarm. At the same time, the system\'s open external interface facilitates the diversification of clients and integration with other application systems. Practice has proved that the ideas and designs of this paper are feasible and effective.
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