| 摘要: |
| 以一种高可靠性数据传输系统为例，详细阐述了采用LVDS输出电平标准的交叉备份方案的设计，比较了LVDS端交叉和TTL端交叉各自的优缺点。对TTL端交叉备份方式进行了分析，重点讨论了TTL几端交叉备份方式解决主备故障隔离的几种方法，并分析了各种方法在实际应用中存在的不足。最后给出了该高可靠性数据系统中所采用的跨接电阻方案。该方案具有设计简单、可靠性高的优点。 |
| 关键词: 遥感卫星系统 数据传输系统 LVDS 交叉备份 |
| DOI：10.3969/j.issn.1001-893X. |
| 修订日期：2007-03-30 |
| 基金项目: |
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| Cross-backup Method for LVDS Interface on High-reliability Data Transmission System |
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| Abstract: |
| In this paper,a cross-backup method for LVDS interface on high-reliability data transmission system is described in detail.The differences between the cross-backup of LVDS and the one of TTL end are compared.The method of cross-backup way in TTL level port is discussed with focus on a few typical methods,which can isolate the failure between the host and the backup instruments.Subsequently,a method named resistance-linking is adopted in the data transmission system,which is featured by simplicity and reliability. |
| Key words: remote sensing satellite system,data transmission system,LVDS,cross-backup |
《电讯技术》编辑部 