| 一种基于ARM处理器的多通道高精度数据采集模块的实现方法 |
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| 引用本文： | 肖方旭,陈昊. 一种基于ARM处理器的多通道高精度数据采集模块的实现方法[J]. 电子工程师, 2007, 33(9): 77-80 |
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| 作者姓名： | 肖方旭 陈昊 |
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| 作者单位： | 1. 东南大学集成电路学院,江苏省南京市,210096
2. 东南大学ASIC工程中心,江苏省南京市,210096 |
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| 摘 要： | 介绍了一种基于ARM7TDMI处理器的数据采集模块的实现方法。该模块可以对电压、电流、热电阻、热电偶、开关量等多种物理量进行测量。ARM处理器与数据采集模块之间采用模拟SPI协议进行数据传输。为了实现高精度,采用了24位A/D转换器。经过对电路的多次改进,该模块目前已能测准到万分之一的精度,优于现在的工业标准。
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| 关 键 词： | ARM处理器 多通道 数据采集 |
| 修稿时间： | 2007-04-19 |
An Implementation Method of High Precision Data Acquisition Module Based on ARM |
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| XIAO Fangxu,CHEN Hao. An Implementation Method of High Precision Data Acquisition Module Based on ARM[J]. Electronic Engineer, 2007, 33(9): 77-80 |
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| Authors: | XIAO Fangxu CHEN Hao |
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| Affiliation: | 1. IC College of Southeast University, Nanjing 210096, China; 2. ASIC Center of Southeast University, Nanjing 210096, China |
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| Abstract: | A design method of multichannel high precision data acquisition unit based on ARM processor is introduced in this article.Physical quantities such as voltage,current,thermo resistance,thermocouple and switching value can be measured by this unit.Data is transferred through simulative SPI protocol between ARM and data acquisition module.To achieve high precision,a 24 bit A/D converter is used.Now one out of ten thousand precision can be achieved after several times of improvements of the circuit and the precision is better than present industry standard. |
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| Keywords: | ARM processor multichannel data acquisition |
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