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对多通道模拟量的数据采集,是微机在检测控制和仪器仪表中应用的重要环节。目前提供的各种功能的A/D转换接口板价格较贵。本文提出一种以单板机为基础的模拟量实时采样系统,它充分利用单板机自身的软、硬件资源,只用一片A/D转换器,不增加任何其它硬件便可完成8通道的实时采样,并在单板机上显示所设定待显通道的采样数据。这是一种廉价而实用的采样系统。
The acquisition of multi-channel analog data acquisition is an important part of the computer in the detection control and instrumentation applications. Currently available A / D converter interface board of various functions is more expensive. This paper presents a single-board based on real-time analog sampling system, which takes full advantage of its own single-board computer hardware and software resources, using only a piece of A / D converter, without any additional hardware to complete the 8-channel Sampling in real time and displaying the sampling data of the channel to be displayed on the single board computer. This is a cheap and practical sampling system.