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为了适应现代多媒体教学的需要,压缩多媒体教学的成本,加强课堂上的师生互动。本文设计了一种使用AVR单片机作为核心控制器件的小型无线通信系统的设计方案。阐述了利用AVR单片机和C语言进行通信协议的设计,以及相应的硬件电路构成。同时该系统能实现多点相互通信形成小型无线网络,或以某个节点为中继进行更远距离的传输。试验表明,该系统能够准确的进行数据的发送和接收,特别适合应用于低功耗、低成本、小体积的无线通信中,并可以方便的安装于教室内,实时的传送师生的互动信息。
In order to meet the needs of modern multimedia teaching, the cost of multimedia teaching is reduced, and the interaction between teachers and students in the classroom is strengthened. This text has designed a kind of small wireless communication system design scheme that uses AVR one-chip computer as the key control device. Describes the use of AVR microcontroller and C language communication protocol design, and the corresponding hardware circuit structure. At the same time the system can achieve multi-point mutual communication to form a small wireless network, or to a node as a relay for more long-distance transmission. Experiments show that the system can accurately send and receive data, especially suitable for low power consumption, low cost, small volume wireless communication, and can be easily installed in the classroom, real-time transmission of teacher-student interaction information .