本文介绍了已有的节能方法和 Linux 电源管理的机制， 并且以 iPAQ 为例通过 Linux

的电源管理机制和上层应用软件，设计和实现了一个较完整和有效的电源管理方案，为众多基于 Linux 系统的嵌入式设备的电源管理提供了一个有用的参考。-This article describes the existing Linux power management energy saving methods and mechanisms, and the iPAQ as an example of the power management through the Linux system and the upper layer application software, design and implement a more complete and effective power management solution for many Linux-based systems power management of embedded devices provide a useful reference.