Abstract
A control system for multimedia classroom is designed based on Mitsubishi PLC. The specific hardware design and software design are also given. The control system functions are as follows: The manual control of classroom doors, or automatic control by the detection signals of microwave radar sensors; The manual control of lights, or automatic control by the detection signals of the Human pyroelectric sensors and light switch type sensors; The manual control of the air-conditions, or automatic control by the detection signals of the temperature sensors; The control of the projector and screen; Intelligent fault detection and alarm. In addition, the touch screen is used as man-machine interface, which have the advantages of convenient operation and maintenance, also the generous beauty. Through simulation experiment, the control system can achieve all of the above control functions stably and reliably.
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