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Wireless embedded system energy consumption management method based on control theory

An embedded system, energy management technology, applied in program control design, hardware monitoring, energy-saving computing and other directions, can solve the problem of not considering system energy consumption and so on

Pending Publication Date: 2020-01-24
EAST CHINA JIAOTONG UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing work only guarantees the real-time performance of the system and does not consider the energy consumption of the system

Method used

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  • Wireless embedded system energy consumption management method based on control theory
  • Wireless embedded system energy consumption management method based on control theory
  • Wireless embedded system energy consumption management method based on control theory

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Embodiment Construction

[0046] Below in conjunction with embodiment the present invention is described in further detail.

[0047] Wireless embedded systems based on control theory, such as figure 1 As shown, it includes a base station, an actuator, and multiple sensors 2 wirelessly connected to the base station. The sensor 2 samples periodic signals and sends them to the base station. The CPU in the base station processes the corresponding data, and then stimulates the actuators to take corresponding actions.

[0048] The workload of the base station changes with the amount of data received. In order to avoid data congestion, the base station is provided with at least one data buffer 11 for storing data acquired from the sensor 2 but not in time to process. After the data of one sampling period, the cached data of the data buffer 11 are successively taken out according to the sequence of the cached time.

[0049] The base station also includes an operation mode allocation controller 12 and a monito...

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Abstract

The invention discloses a wireless embedded system energy consumption management method based on a control theory, and the method comprises the following specific steps: 1, a controller estimating theload capacity of a task according to the information of a task monitor in a current sampling period; 2, in order to meet the real-time requirement, calculating the optimal working frequency, and selecting the most suitable operation mode, so that it is guaranteed that all sub-tasks can be completed; and 3, recording and reporting the obtained most suitable operation mode and related information to an operation mode distribution controller for task scheduling and operation mode distribution of the CPU in the next sampling period. The operation mode of the CPU is generated by the last round ofiterative selection, and the controller obtains a new service rate and a new operation mode according to the requirements of the load capacity and the utilization rate. After each sampling period is finished, the CPU sets the new operation mode, adjusts the workload service rate, records the current utilization rate and the current service rate and transmits the current utilization rate and the current service rate to the operation mode control distributor for the next round of operation mode selection.

Description

technical field [0001] The invention relates to energy management of a wireless embedded system, in particular to a method for managing energy consumption of a wireless embedded system based on cybernetics. Background technique [0002] In recent years, thanks to the rapid development of computer technology and communication technology, wireless embedded systems have been widely used in traffic monitoring, environmental monitoring, and home security. However, this type of system usually has quite strict requirements on its service quality. For example, a wireless distributed video surveillance system needs to identify targets by analyzing continuous video images in a very short time, but the processing time of the images decreases with the collected The image content, background, size and other factors change and become an uncertain value. In addition, as a wireless embedded system, the commonly used wireless connection characteristics require the use of battery power, and ...

Claims

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Application Information

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IPC IPC(8): G06F9/50G06F11/30
CPCG06F9/505G06F11/3024G06F11/3051Y02D10/00
Inventor 袁朝晖曹庆萍邵冰洁
Owner EAST CHINA JIAOTONG UNIVERSITY
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