农业设施多功能测控仪的设计与研究

Study and Design of a Multifunctional Measuring controllingInstrument for Agricultural Facilities

介绍了以单片机 AT89C5 5为控制核心的应用于农业设施中的多功能测控仪的硬件与软件设计。该仪表硬、软件的模块化结构 ,使其能够在不同的应用场合和应用条件下实现最合理的组合 ,从而实现较高的性能价格比。各变送器通过多路模拟开关共用一块 A/D转换芯片 5 G1 4 433,使得结构简单、运行可靠、满足精度要求 ,进一步降低了成本 。

This paper introduces the software and hardware design of a multifunctional measuring controlling instrument applied in agricultural facilities, which takes the single chip microprocessor AT89C55 as it's controlling core. The software and hardware modular structures make this instrument realize the most rational combination in different applied fields and conditions and a higher ratio of performance to price. All the transmitters share the same A/D chip 5G14433 through a multiplex analogue switch, which makes its structure more simple, work reliable and cost lower. All of these may result in a wide popularization of this instrument in the agricultural facilities.