基于单片机的高精度数控电流源的设计  

Design of High-accuracy Numerical Controlled Current Source Based on Single-chip

作　　者：姜淑华[1] 

机构地区：[1]常州工程职业技术学院自动化技术系,江苏常州213164

出　　处：《机械与电子》2012年第5期59-61,共3页Machinery & Electronics

摘　　要：整个电源系统由STC89C51核心控制器、恒流源、D/A转换电路、A/D转换(数据采集)电路、键盘、显示器、主电源及辅助电源等7大模块组成。用键盘接收用户输入的控制信息,经单片机分析用户命令,再发出各种控制信息,完成各种控制功能。为了实时测量负载输出电流变化的情况,采用A/D转换数据采集模块,由单片机接收采集到的数据并进行处理后输出到LED数码管,完成负载输出电流的显示。The whole current source system consists of STC89C51 core controller, constant - current source,D/A converter, A/D converter （da- ta acquisition）, keyboard, display, main current source,accessory power supply and so on. Using keyboard to receive controlling information by user inputed, single - chip analyzes user command, then sends all kinds of controlling information, accom- plishes control function. To measure the output current of the load instantaneously, using A/D con- verter to achieve the data acquisition, the single - chip receive the data, processes the data, and out- lets to the LED to display, achieves the display of the load current.

关 键 词：STC89C51 恒流源 A/D转换 D/A转换 

分 类 号：TN86[电子电信—信息与通信工程]