无线半双工多路数据传输系统设计

本系统采用调频方式实现了主站与多个从站间的数据传输功能。主站以单片机STC89C51RC为核心，利用12C总线将其数据存储空间扩展到64K，用以存放从各个从站接收来的数据，实现了主机对所有从机数据进行存储和回放的功能。从站以STC12C4052AD单片机为核心，在主站轮询方式下，从站将自身采集到的数据以无线方式发送给主机，同时在从站的液晶显示屏上实时显示。在轮询式的基础上，通过从站上的按键开关，可实现人为控制从站向主站申请发送数据的功能。

On The design of wireless semiduplex muti data transportation system

The data transportation function from primary station to slave station was accomplished by frequency modulation in this design.The primary station was based on STC89C51RC, in which the storage capacity can be extended to 64K by I2C bus. So the data from slave stations can be storaged and played back in it. The slave station was based on STC12C4052AD, in which the collection data can be send to primary station under it＇s polling, in the mean time the data was displayed in the LCD. By the means of polling, the data applying function can be controled by people through keys in slave station.