| 有源应答器C1接口硬件电路设计 |
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| 引用本文： | 赵亮,陈永刚.有源应答器C1接口硬件电路设计[J].铁路计算机应用,2009,18(12):34-36. |
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| 作者姓名： | 赵亮 陈永刚 |
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| 作者单位： | 兰州交通大学,自动化与电气工程学院,兰州,730070 |
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| 摘 要： | 针对RS-485链路和有源应答器C1接口采用不同的电平,提供一种标准转换方案,采用MAX485与FPGA芯片搭配的方式,在硬件上实现电平标准转换.在对MAX485芯片分析的基础上,设计出相应的外围硬件电路,采用TLP521芯片实现光耦隔离,避免电磁干扰或雷击损坏设备.
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| 关 键 词： | 应答器 MAX485芯片 电平转换 TLP521芯片 设计 |
| 收稿时间： | 2009-12-15 |
Design on hardware electric circuit in C1 interface of balise |
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| ZHAO Liang,CHEN Yong-gang.Design on hardware electric circuit in C1 interface of balise[J].Railway Computer Application,2009,18(12):34-36. |
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| Authors: | ZHAO Liang CHEN Yong-gang |
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| Institution: | (School of Automation ＆ Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China) |
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| Abstract: | For RS-485 link and the interface C1 of active balise using different level,it was provided a program of standard conversion.System used a MAX485 chip and the FPGA with the manner,at the hardware level,it was implemented the standard conversion.On the basis analysis of the MAX485 chip,it was designed the corresponding peripherals hardware.It was implemented isolation used TLP521 optocoupler chip,avoided electromagnetic interference and that thunder damaged equipment. |
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| Keywords: | balise MAX485 chip level conversion TLP521 chip design |
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