Method and system for selecting power consumption mode based on embedded system, embedded system
An embedded system and mode selection technology, applied in the direction of multi-program device, program control design, climate sustainability, etc., can solve the problem of unbalanced balance between performance and power consumption, and achieve power saving and real-time balance Effect
Active Publication Date: 2018-10-16
TANGRAM MICROELECTRONICS TECH SHANGHAI CO LTD
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[0004] The purpose of the present invention is to solve the problem that the performance and power consumption balance can not be balanced, and proposes a selection method and system based on the power consumption mode of the embedded system. the purpose of saving
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[0036] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. The present invention divides the state of embedded system into one or more target states (according to the design of concrete heterogeneous multi-core SOC system and circuit board) according to clock and power supply, and every kind of target state corresponds to corresponding power consumption grade; When the system When in an idle state and allowed to sleep, the power management module determines several low-power modes that the system is currently allowed to enter according to the voting conditions of system resources such as each processor state, power supply, clock, memory, and bus. Each power consumption mode corresponds to the corresponding power consumption level (c1, c2, c3..); for the corresponding power consumption level, the time required to enter and exit various power consumption modes is measured experimen...
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The invention relates to a power consumption mode selection method and system based on an embedded system, and the embedded system; the selection method comprises the following steps: dividing the embedded system into a plurality of target states according to system resources; when the embedded system is in an idle state and allows sleeps, determining the accessible target states of the embedded system according to the present resource occupation conditions of the system, and each target state corresponds to the corresponding power consumption level; primarily determining sleep time according to a wake time point and the present time point, wherein the wake time point is determined by next scheduling time of the embedded system; comparing the sleep time with a time delay value of entering and exiting each target state, selecting to enter the corresponding power consumption mode according to the comparison result, and the power consumption mode matches the corresponding power consumption level. The power consumption mode selection method and system based on the embedded system can maximumly save power consumption while ensuring performance and instantaneity requirements of the whole system, thus realizing maximum balance between power consumption, performance and instantaneity.
Description
technical field [0001] The invention relates to the problem of power consumption of an embedded system, in particular to a selection method and system based on a power consumption mode of an embedded system, and an embedded system. Background technique [0002] The architecture of an embedded system based on a heterogeneous multi-core architecture is one that combines two or more different types of microprocessors or microcontrollers. Because of its ability to provide higher processor performance, more efficient power utilization, and occupy less physical space, it has recently been widely promoted in the embedded field, especially in high-performance processors that emphasize integrated functionality and connectivity. Embedded devices. [0003] At present, there are relatively few related documents and patents on the power consumption of embedded systems based on heterogeneous multi-core architectures, and there are almost none that discuss from the chip level and the oper...
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IPC IPC(8): G06F1/32G06F9/48
CPCG06F1/3206G06F1/329G06F9/4893Y02D10/00
Inventor 廖光荣
Owner TANGRAM MICROELECTRONICS TECH SHANGHAI CO LTD