| 基于新型通信方法的模拟量采集板卡的设计与实现 |
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| 引用本文： | 侯键,丁强,姜周曙.基于新型通信方法的模拟量采集板卡的设计与实现[J].机电工程,2011,28(3):360-364,373. |
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| 作者姓名： | 侯键 丁强 姜周曙 |
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| 作者单位： | 杭州电子科技大学自动化学院,浙江,杭州,310018 |
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| 摘 要： | 对于不同的模拟量输入信号,PLC控制系统需要扩展专用的采集模块;现有的多功能模拟量采集模块与PLC通讯通常采用MODBUS协议,并占用PLC有限的通讯接口.两种方案实现复杂,性价比差.为此,开发了一款不占用PLC现有通讯接口、仅利用2个PLC数字输入口进行通信的多功能模拟量采集板卡.研究结果表明,该板卡能够实时采集温度...
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| 关 键 词： | 模拟量采集 通信 可编程控制器 |
Design and implementation of analog acquisition card based on new communication method |
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| HOU Jian,DING Qiang,JIANG Zhou-shu.Design and implementation of analog acquisition card based on new communication method[J].Mechanical & Electrical Engineering Magazine,2011,28(3):360-364,373. |
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| Authors: | HOU Jian DING Qiang JIANG Zhou-shu |
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| Affiliation: | (School of Automation,Hangzhou Dianzi University,Hangzhou 310018,China) |
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| Abstract: | For different analog-signals,special acquisition modules are expanded in PLC control system.If current multi-signal-types analog acquisition module is used,PLC serial port（485/232） and communication protocol such as MODBUS are needed.The both methods are complex and of poor price performance ratio.In order to slove the problem,a multi-functional analog acquisition card was developed,in which only two PLC digital input-ports instead of PLC communication interface were used.The results indicate that the card can real-timely acquire temperature,standard current and voltage,also can communicate with any type PLC and meet corresponding requirements of EFT testament.This design is universal and has high price performance ratio.The card has been used in PLC control system reliably. |
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| Keywords: | analog acquisition communication programmable logic controller（PLC） |
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