在传统的有线病房呼叫系统基础上,提出一种基于AT89C2051单片机和nRF401射频通信芯片为核心的无线病房呼叫器。研究了系统电路设计及软件实现,并给出了系统框图、硬件电路及软件设计流程图。与传统有线呼叫系统相比,该系统具有无须布线,改建方便,投入小等优点。
A wireless hospital sickroom caller system is propoed,which is based on AT89C2051 chip and the chip of nRF401 for radio frequency communication as its core.Circuit design and software realization in wireless caller are emphasized with description of descriptions of system architecture,hardware circuit and software flow chat.Compared with the traditional wired system,the presented wireless system has the advantages of no cabling, convenient reconstruction,low cost and so on.