基于Linux系统的动态电源管理的设计和实现

Design and realization of dynamic power management based on Linux system

为了提高便携式手持设备的计算性能及使用时间,加强对这些设备的电源管理已经成为研究的重点。目前针对系统的低功耗要求,嵌入式系统广泛采用高级电源管理技术。完整地给出了嵌入式Linux系统的电源管理解决方案,并通过调整CPU工作频率的方法为电源管理加入动态特性支持,满足用户对系统功耗低、响应快的双重要求,对类似的生产开发具有较好的参考价值。

In order to increase computing performance and the utilization time of portable handheld devices, it has become the study focus to strengthen the power management for these devices. Currently, focus on the low power consumption requirement for the system, the embedded system widely adopts advanced power management techniques. An integrated solution to power management based on embedded Linux was presented, dynamic support was added into power management by adjusting CPU operation frequency, satisfying user double requirements for lower power consumption and faster response speed. The experience and schemes has better reference values for similar manufacture and development.