Linux embedded system-based dynamic power management method

A dynamic power management and embedded system technology, applied in the direction of data processing power supply, multi-program device, etc., can solve the problems of limited battery power supply time, poor heat dissipation conditions, battery weight and size restrictions, etc., and achieve good energy-saving effect

Inactive Publication Date: 2010-04-21
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

The problem of energy consumption is a difficulty and hot spot that people generally pay attention to in the design of embedded systems in recent years, which seriously restricts the application and development of embedded systems
A large number of mobile systems are emerging, they are powered

Method used

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  • Linux embedded system-based dynamic power management method
  • Linux embedded system-based dynamic power management method
  • Linux embedded system-based dynamic power management method

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Experimental program
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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings.

[0044] figure 1 It is a DPM frame diagram of the present invention. The layered thinking of software design is adopted. Therefore, it is easy to expand the module to add power management for different devices. The whole framework includes a script layer, a virtual file interface layer, a device DPM strategy layer, and a device driver layer.

[0045]In addition to realizing a loadable DPM framework in the Linux embedded environment, the present invention also proposes and implements a new strategy based on exponential average adaptive algorithm for the deficiency of the power management strategy Ondemand of the Cpufreq kernel subsystem of Linux , and for the shortage of hard disk power management of discrete-time and continuous-time Markov decision process algorithms, a semi-Markov-based hard disk power management optimization algorithm is proposed.

[0046] In a co...

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Abstract

The invention provides a Linux embedded system-based dynamic power management method, which is implemented by a dynamic power management frame. The dynamic power management frame comprises a script layer, a virtual document interface layer, an equipment dynamic power management strategy layer and an equipment driving layer, wherein the script layer provides a script for controlling the dynamic power management frame; dynamic power management on specific equipment can be enabled/disabled through the script provided by the script layer; or the script layer acquires the relevant information about the equipment power management; the virtual document interface layer provides interfaces corresponding to script commands, and the interfaces are called by the script and comprise a virtual document interface of the whole dynamic power management frame and document interfaces of each power management equipment; the equipment dynamic power management strategy layer provides strategy interfaces of each power management equipment for the virtual document interface layer to call; and the equipment driving layer provides drive related to the dynamic power management of each power management equipment.

Description

technical field [0001] The invention belongs to the dynamic power management technology of an embedded system, in particular to a dynamic power management method based on a Linux embedded system. Background technique [0002] With the rapid development of semiconductor technology and the improvement of system integration and computing speed, the contradiction between high performance and low power consumption has become increasingly prominent. On the one hand, the rapid development of embedded technology and the widespread application of embedded devices have exposed some defects and deficiencies while providing convenience for people in communication and entertainment. The problem of energy consumption is a difficult point and a hot spot that people generally pay attention to in the design of embedded systems in recent years, and it seriously restricts the application and development of embedded systems. A large number of mobile systems are emerging, which are powered by b...

Claims

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Application Information

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IPC IPC(8): G06F1/32G06F9/46
Inventor 刘发贵曹立正吴泽祥
Owner SOUTH CHINA UNIV OF TECH
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