吉林大学学报(信息科学版)

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数字有源电阻箱的设计

陈小彦, 高 咏, 张新宝, 李宝华   

  1. 吉林大学 电子科学与工程学院, 长春 130012
  • 收稿日期:2016-08-29 出版日期:2017-03-27 发布日期:2017-06-07
  • 作者简介: 陈小彦(1992— ), 女, 吉林松原人, 吉林大学硕士研究生, 主要从事应用电子技术研究,(Tel)86-18744019147(E-mail) 18744019147@163. com; 李宝华(1962— ), 男, 长春人, 吉林大学教授, 硕士生导师, 主要从事应用电子技术研究, (Tel)86-13180801233(E-mail)libh@ mail. jlu. edu. cn。
  • 基金资助:
    吉林省科技发展计划自然科学基金资助项目(20160101284JC)

Design on Digital Active Resistance Box

CHEN Xiaoyan, GAO Yong, ZHANG Xinbao, LI Baohua   

  1. College of Electronic Science and Engineering,Jilin University, Changchun 130012, China
  • Received:2016-08-29 Online:2017-03-27 Published:2017-06-07

摘要: 为解决传统电阻箱量程范围小、 阻值分辨度低、 装置体积大以及使用不便等问题, 设计了一种宽范围、
高阻值分辨度的数字化有源电阻箱。 该电阻箱采用模拟有源电阻硬件电路, 并应用 ARM7 系列微控制器
LPC2138 系统对其进行控制, 并使用矩阵键盘和 LCD(Liquid Crystal Display)液晶屏作为人机交互设备, 以便于
实现装置的电阻值数字化设定及同步显示。 实验数据表明, 该数字有源电阻箱的阻值范围为 10. 01 Ω ~
10. 01 MΩ, 精度为依0. 46%, 可广泛应用于电子电路中。

关键词: 宽范围, 数字电阻箱, 高精度

Abstract: In circuit design it is often needed to adjust the resistance of the resistor, the traditional resistance
box has the disadvantages of small scale range, low resolution resistance, large volume, inconvenient and
others. Therefore, it is necessary to design a digital resistance box that has wide range of resistance, high
resolution resistance. The main purpose is to research and produce a digital active resistance box, which has
analog active resistance hardware circuit, and is controlled by ARM7 series microcontroller LPC2138
system. The active resistance box uses a matrix keyboard and a LCD(Liquid Crystal Display) liquid crystal
screen as a human computer interaction device to realize the digital setting and synchronous display of the
resistance value of the device. The experimental data show that the resistance range of the digital active
resistance box is 10. 01 Ω~ 10. 01 MΩ and the accuracy is ±0. 46% . It can be widely used in electronic
circuits.

Key words: wide range,  digital resistance box, high precision

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