[1]李小文,严卫林.检测系统PT100 铂热电阻的数字仿真设计[J].控制与信息技术(原大功率变流技术),2018,(03):48-51.[doi:10.13889/j.issn.2096-5427.2018.03.010]
 LI Xiaowen,YAN Weilin.Simulation Design of PT100 Platinum Thermistor Test System[J].High Power Converter Technology,2018,(03):48-51.[doi:10.13889/j.issn.2096-5427.2018.03.010]
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检测系统PT100 铂热电阻的数字仿真设计()
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《控制与信息技术》(原《大功率变流技术》)[ISSN:2095-3631/CN:43-1486/U]

卷:
期数:
2018年03期
页码:
48-51
栏目:
信息技术与系统
出版日期:
2018-06-05

文章信息/Info

Title:
Simulation Design of PT100 Platinum Thermistor Test System
文章编号:
2096-5427(2018)03-0048-04
作者:
李小文严卫林
(株洲中车时代电气股份有限公司,湖南株洲 412001)
Author(s):
LI Xiaowen YAN Weilin
( Zhuzhou CRRC Times Electric Co., Ltd., Zhuzhou, Hunan 412001, China)
关键词:
PT100 铂热电阻模拟电阻阻值检测FPGADAC
Keywords:
PT100 platinum thermistor analog resistance resistance measurement FPGA DAC
分类号:
TN79+2
DOI:
10.13889/j.issn.2096-5427.2018.03.010
文献标志码:
A
摘要:
传统DAC 数字仿真式模拟电阻存在无法跟踪测试电流变化的缺陷。文章基于目前轨道交通行业中 PT100 铂热电阻阻值的典型测试系统,提出了一种利用模拟电压来实现对PT100 电阻模拟的方法,其采取FPGA 控制DAC 的模拟电压输出,通过特定模拟电路完成数阻转换,并将模拟电阻值的误差控制在±0.2 Ω 以内,能满足 PT100 阻值检测系统对模拟可变电阻的高精度、多通道、快速更新阻值的需求。
Abstract:
To overcome the disability of traditional DAC digital simulation resistor which cannot change with test current, based on the current typical detection system of PT100 in rail transportation industry, it presented a simulation design of PT100 in which analog output voltage of DAC can be controlled by FPGA. With special analog circuit design, the conversion from digital signal to channel resistor is achieved in error within plus or minus 0.2 Ω. With high precision and quick speed of value refreshment, the design can meet the requirements of multiple channel PT100 detected system.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-12-27
 作者简介:李小文(1978-),男,工程师,现从事测试设备开发工作。
更新日期/Last Update: 2018-06-26