Design of Multi-channel Miniaturized High-precision Program-controlled Resistance Device

Tong Xiuliang; Yu Lixia; Yang Xuejun; Yuan Zhilei; Su Haixin

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Design of Multi-channel Miniaturized High-precision Program-controlled Resistance Device

更新时间：2026-08-29

- Design of Multi-channel Miniaturized High-precision Program-controlled Resistance Device
- Vol. 23, Issue 9, Pages: 87-91(2023)
- 作者机构：
  
  1. 中北大学信息与通信工程学院
  2. 山西江阳兴安民爆器材有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2023
- 稿件说明：
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Tong Xiuliang, Yu Lixia, Yang Xuejun, et al. Design of Multi-channel Miniaturized High-precision Program-controlled Resistance Device[J]. 2023, 23(9): 87-91.
DOI：

Tong Xiuliang, Yu Lixia, Yang Xuejun, et al. Design of Multi-channel Miniaturized High-precision Program-controlled Resistance Device[J]. 2023, 23(9): 87-91. DOI：

摘要

针对某航天项目需要在功率组件自动测试系统中连续输出多路大小阻值不等的电阻

提出了一种以STM32F103RCT6芯片为核心的低成本、易实现的24通道程控电阻输出解决方案。在I/O口资源有限条件下

利用74HC595移位缓冲器的优势控制继电器电阻网络的通断

实现多通道电阻输出。通过MAX232芯片以及Modbus协议通信能够快速准确地输出24路期望阻值。测试结果表明

开发的程控电阻装置可提供1666.65 kΩ以内的电阻输出

分辨率为10 Ω且精度可达0.1%以内

其体积小、方便携带

而且操作简便、显示直观。

Abstract

A low cost and easy to implement 24-channel program controlled resistance output solution based on STM32F103RCT6 chip is proposed in order to continuously output multichannel resistors with different resistance values in the automatic test system of power components in an aerospace project.With the advantage of 74HC595 shift buffer

the on-off of relay resistance network is controlled to realize multi-channel resistance output under the condition of limited I/O port resources.Through MAX232 chip and Modbus protocol communication

24 expected resistance values can be quickly and accurately output.The test results show that the developed program-controlled resistance device can provide resistance output within 1666.65 kΩ

with a resolution of 10 Ω and an accuracy of less than 0.1%.It is small in size

convenient to carry

easy to operate and intuitive to display.

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Related Institution

School of Information and Electrical Engineering,Shandong Jianzhu University

School of Mechanical and Electrical Engineering,Weifang Vocational College

中兴克拉科技(苏州)有限公司研发部

1 中国民航局第二研究所

2 Shanghai Institute of Spacecraft Equipment

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