软开关机在高可靠性分布式电法仪器中的设计  

The design of soft power-off in distributed electrical prospecting instruments

作　　者：淳少恒[1] 陈儒军[1] 李昂 成沁宇 何馨[1] 向毕文 

机构地区：[1]中南大学地球科学与信息物理学院,长沙410083 [2]中国石油大学(华东)地球科学与技术学院,青岛266580

出　　处：《地球物理学进展》2015年第2期928-933,共6页Progress in Geophysics

基　　金：中央地勘基金(12120113095200);中南大学中央高校基本科研业务费专项资金资助(2014zzts255)联合资助

摘　　要：嵌入式系统因具有功耗低,功能强大,灵活性好等优点而被广泛用于电法仪器中.由于处理器架构的不同和使用硬件环境的复杂性,嵌入式系统对电源管理并没有一个统一的规范.随着分布式观测系统等"大数据"方法的发展,各个采集站工作时往往需要不停地保存大量的数据.为防止各类突发事件而导致采集站的数据文件被损坏,一个安全的开关机机制就显得尤为重要.为解决这一问题,本文设计了一种基于CPLD的软开关机系统.该系统在工作时,需要电流为30 mA,功耗为0.36 W.实际应用表明,该系统不仅功耗低,消耗资源少,而且安全性好,能有效地应对各类突发事件对数据产生的影响,增强了系统的稳定性.同时该系统具有很强的通用性.Because of the characteristic of low power, multifunction and flexibility, the embedded system is widely used in electrical prospecting instruments. But with the variety of the processor architecture and the complexity of hardware environment, embedded system does not obey a unified management standard for power. As the ＂big data＂ time for electrical prospecting is coming, such as the distributed acquisition system, generally the collection station need to save a large amount of data during works. To prevent the data file being damaged caused by any emergency, a security mechanism of power-off is of great importance. To solve that problem, this paper designs a soft power-off system based on CPLD. When the system works, the value of the input current is just to 30 mA, and the power consumption is 0. 36 W. Practical application shows that the system not only has low power and low resource consumption, but also with high security. The system can effectively prevent all kinds of emergency from damaging the data file, and so the stability of the collection station can be enhanced. In addition, the system would be transplanted to any other design easily.

关 键 词：分布式电法仪器 软开关机 CPLD 数据保护 低功耗 

分 类 号：P631[天文地球—地质矿产勘探]