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本文介绍一块适用于PC-1500系列袖珍计算机(包括PC-1500A,PC-1501等)的CMOS高精度多路数据采集板的设计方法,该板可分时采集8路模拟信号,具有成本低,精度高、功耗小,并可用实时时钟控制改变采样频率和用软件进行通道切换等特点。特别适用于构成各种要求采用电池供电的,多功能的便携式微型野外或现场综合数据采集和实时控制系统。文中还列出了用该电路板来采集数据的BASIC语言程序和汇编语言子程序清单。
This article introduces a design method of CMOS high precision multi-channel data acquisition board suitable for PC-1500 series pocket PC (including PC-1500A, PC-1501, etc.). This board can collect 8 analog signals in a time-sharing manner, High precision, low power consumption, and real-time clock control can be used to change the sampling frequency and channel switching software features. It is especially suitable for composing a variety of portable, battery-powered, multi-purpose portable field or field integrated data acquisition and real-time control systems. The article also lists the use of the circuit board to collect data BASIC language program and assembly language subroutine list.