Energy consumption optimization method for fixed priority periodic task in hybrid critical system

A technology for periodic tasks and key systems, applied in energy-saving computing, program startup/switching, resource allocation, etc., can solve problems such as high energy consumption, systems that cannot apply fixed-priority policy scheduling, etc., to reduce energy consumption, The effect of reducing production costs and reducing replacement cycles

Active Publication Date: 2018-12-11
HUAQIAO UNIVERSITY
View PDF7 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the research on hybrid critical systems mainly focuses on the feasibility analysis of the system. There are relatively few studies on the energy consumption of hybrid critical systems. ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Energy consumption optimization method for fixed priority periodic task in hybrid critical system
  • Energy consumption optimization method for fixed priority periodic task in hybrid critical system
  • Energy consumption optimization method for fixed priority periodic task in hybrid critical system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The technical solutions in the embodiments of the present invention will be described and discussed in detail below in conjunction with the drawings of the present invention. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0040] see figure 1 As shown, a method for optimizing energy consumption of a fixed-priority periodic task in a hybrid key system of the present invention comprises the following steps:

[0041] Step 101: Establish a mixed critical periodic task model including several mixed critical periodic tasks.

[0042] The mixed critical periodic task model is a set composed of n mixed critical periodic tasks Γ={τ 1 ,τ 2 ,…,τ n}, each mixed critical periodic task τ i (1≤i≤n, i is an integer) consists of four tuple {T i ,D i ,ξ i ,C i} composition, where T i is the mixed critical period task τ i cycle; D i is the mixed critical period task τ i T...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to an energy consumption optimization method for a fixed priority periodic task of a hybrid critical system, the method comprising the following steps: establishing a hybrid critical periodic task model comprising a plurality of hybrid critical periodic tasks; determining priority of hybrid critical periodic tasks by using the critical hierarchy partitioning method; calculating the lowest feasible speed S of hybrid critical period task scheduling; calculating an idle time ST generated by a task of a high critical level in a low mode, and determining an execution speed Siof the processor by using the idle time, wherein the low level critical tasks and high level critical tasks are always executed at speed Si in low mode, and the high critical level tasks are executedat maximum processor speed with extra load in high mode; using dynamic power management technology to reduce processor power consumption. The method of the invention effectively reduces the system energy consumption by utilizing the idle time generated by the high-critical-level tasks and the dynamic power consumption management technology.

Description

technical field [0001] The invention relates to low-energy real-time scheduling of a hybrid critical system, in particular to a method for optimizing energy consumption of a fixed-priority periodic task in a hybrid critical system. Background technique [0002] A hybrid critical system refers to an embedded real-time system that performs multiple functions on the same platform and meets the constraints of power consumption, cost, and volume. Mixed critical systems can perform functions at different critical levels. These functions can be broadly categorized into safety-critical functions and mission-critical functions. An example of a mixed-critical system is a drone, where trajectory calculation and flight control functions are considered safety-critical, while object tracking for surveillance purposes is considered mission-critical. Because the system is limited by weight and volume, and powered by batteries, coupled with the rapid development of processor technology, en...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F9/48G06F9/50G06F1/32
CPCG06F1/329G06F9/4843G06F9/505G06F2209/484Y02D10/00
Inventor 张忆文蒋文贤
Owner HUAQIAO UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap