摘要
在分析无线餐饮点菜设备发展的基础上,给出了主题的应用背景。硬件电路中选择了Integration公司低成本的IA4421芯片作为无线通信电路的主芯片,并设计了通信固件程序。当多个无线餐饮点菜终端与主机通信时,通过简化Modbus协议使之应用于此半双工系统。实验证明,此无线解决方案稳定可靠,现场效果非常理想。
The paper gives the background of the application after analysis of restaurant ordering wireless terminal device development. In the hardware circuit,it selects low-cost IA4421 as the wireless communication＇s main chip which is produced by Integration Company At the same time it sets wireless communication configuration parameters. When a number of wireless terminals communication with host, the thesis simplifies Modbus protocol in order to apply to the half - duplex communication system. This wireless solution is stable and reliable and the device performs very well in the thai.
出处
《世界科技研究与发展》
CSCD
2009年第2期255-257,共3页
World Sci-Tech R&D
关键词
餐饮点菜
无线通信
MODBUS
半双工
restaurant ordering
wireless communication
modbus
half-duplex system
