基于AM2301单总线协议数据采集系统的设计

Design of Data Acquisiting System Based on AM2301 Single-bus Protocol

设计基于数字温湿度传感器AM2301的单总线协议的数据采集系统,将大大简化分布式信号采集网络的设计。单总线数据采集系统主要实现数据采集、处理、显示和数据传输功能。在硬件系统设计中采用单片机芯片STC89C52和双通道16位高速ADC芯片LTC1865实现两路模拟信号的采集和处理;软件方面主要采用C51设计ADC采集转换程序和数据处理程序,以及模拟AM2301单总线协议的数据传输程序。在Protues软件中分别对数据采集系统进行数据采集功能和数据传输功能的仿真测试,结果表明,系统实现了数据采集功能和单总线数据传输功能,而且多次实验测试结果一致性很好,具有一定的推广应用价值。

The article discusses the functional requirements of single bus protocol data acquisition system, and provides the system design scheme and hardware circuit; the data transfer protocols of a single bus device AM2301 is deeply analyzed and the data communication method is applied to the data acquisition system discussed in the article. It gives detailed data collection program design ideas and data transmission procedures and imple- mentation code. Finally, simulation tests of data acquisition and data transmission capabilities are taken in Protues. The results show that the system implements the data acquisition function and single - bus data transmission function, which has a certain application value.