基于单片机的数控恒流源设计

下载后可任意编辑 本 科 毕 业 论 文（设 计）题 目 （ 中 文 ） 基 于 单 片 机 的 数 控 恒 流 源 设 计 a（英文）Design of constant current voltage source based on SCM 下载后可任意编辑完 成 日 期 2024 年 4 月摘要恒流源是一种高精度的电源，具有响应速度快，恒流精度高，能长期稳定工作，适合各种性质负载等优点，而具有了越来越广泛的应用。本文主要论述了一种基于 51 单片机为控制核心的数控直流源的设计与实现。本电源具有可预设电流，电流步进，显示电流的功能。主要由单片机控制模块、键盘输入模块、A/D 转换模块、恒流源模块、D/A 转换模块和显示模块六部分组成。系统由单片机设定预置电流信号，经过 D/A 转换器 TLC5615 输出模拟电压信号，该下载后可任意编辑信号控制达林顿管的基极，使其集电极输出相应的电流。再通过A/D 转换芯片，实时把采样电路上的模拟信号转换成数字信号，形成反馈，显示出实际的输出电流。关键词：压控恒流源；单片机；数控电源AbstractConstant current source is a kind of common power source with high precision with fast response, high precision of constant current. It can 下载后可任意编辑also work stably for a long time and has various properties of the load. So now it is used more and more widely. This paper mainly discusses the design and implementation of a digital constant current source based on 51 MCU as the control core of the system. The power supply has a preset current, current step, current display function. It has 6 parts: Control module, keyboard input module, A/D transform module, D /A transform module , display module and constant current source module. The current signal set by the SCM. Then it through D / A converter TLC5615 , which output to the voltage analog signal and control the Darlington tube base, and output the corresponding current. Finally through the A/D conversion chip, real-time sampling circuit analog signal is converted into digital quantity, feedback fo...