电阻模拟卡的设计与实现  

Design and Implementation of Resistance Simulation Card

作　　者：李霞 栗心明 LI Xia;LI Xin-ming(School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao 266520,China)

机构地区：[1]青岛理工大学,机械与汽车工程学院,山东青岛266520

出　　处：《电力电子技术》2025年第3期42-45,共4页Power Electronics

基　　金：国家自然科学基金(52275196)。

摘　　要：针对电路设计和测试等领域对电阻阻值变化的需求,以微控制器STM32F407VE为核心构成主控单元,完成了一款电阻值程控可调的电阻模拟卡设计。电阻模拟卡采用5221电阻网络组合方式,配以适当的电源电路和驱动电路,利用继电器模块实现电阻的切换控制。模拟卡通过串行接口与上位机采用串口通讯方式,实现上位机对电阻网络的实时控制,从而完成电阻值设定及固定电阻值的输出。电阻模拟卡阻值可调范围为1~9kΩ,可以实现1Ω的步进可调,精度可达1%,能够满足基本电路设计或测试。双通讯接口设计提高了电阻模拟卡的通用性,并为模拟卡的进一步智能化提供了可能。Aiming at the demand of resistance in the fields of circuit design and testing,a micro-controller STM32F-407VE is used as the core to form the main control unit.Aprogram control adjustable resistance simulation card is designed.The resistance networks is the mode of 5221.The power circuit and drive circuit are designed.The relay modules are used to implement switching control of resistors.Serial communication is achieved with the upper comput-er through a serial interface.The upper computer can achieve the real time control of resistance card.The card has a resistance adjustable range of 1~9 kΩ.It can achieve step value regulation of 1Ω.The accuracy is up to 1%.Double communication interfaces can improved the versatility of the resistance simulation card.They also can provide the pos-sibility for further intelligence.

关 键 词：电阻模拟卡 串口通讯 测试 

分 类 号：TM54[电气工程—电器]