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Overlayer design based wireless sensor network energy-saving method

A wireless sensor, cross-layer design technology, applied in energy-saving ICT, instruments, energy consumption reduction and other directions, can solve the problems of insufficient consideration of energy consumption correlation and mutual influence, and the battery life cannot be prolonged, so as to reduce energy consumption and survive. The effect of prolonging time and prolonging life

Inactive Publication Date: 2008-02-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] However, it is still limited to energy-saving optimization on a single level of WSN, insufficient consideration is given to the energy consumption correlation and mutual influence between the components of the node, and the energy consumption optimization cannot be considered from the perspective of the overall node; in specific applications, in different Under the premise of affecting the function, the battery life is still not extended

Method used

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  • Overlayer design based wireless sensor network energy-saving method
  • Overlayer design based wireless sensor network energy-saving method
  • Overlayer design based wireless sensor network energy-saving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]A wireless sensor network energy-saving method based on cross-layer design, the wireless sensor network node includes a data acquisition unit DAU, a data processing unit DPU and a wireless data transmission / reception module WTRU, the analog-to-digital converter in the data acquisition unit DAU The ADC is set to the dormant ADC Sleep state when not collecting external environmental data tasks and the active ADCActive state when collecting external data; the processor MCU in the data processing unit DPU is set to the active MCU when the working state is at peak power consumption The active state and the dormant MCU Sleep state when the working state is at the lowest power consumption; the wireless data sending / receiving module WTRU is set to the dormant WTRU Sleep state when neither sending nor receiving data, and the sending WTRU Tx when sending data State and receiving WTRU Rx state when receiving data; the wireless data sending / receiving module WTRU or serial port UART t...

Embodiment 2

[0049] 1. Figure 1 is a working state transition diagram based on the wireless sensor network node TaraxNode.

[0050] In the figure: Signals 1-9 are shown in the table below:

[0051] note

signal 1

CC2420 triggers external interrupt: SFD detection or Rx_overflow

signal 2

MCU control command SRFF&SXOSCOFF

signal 3

MCU control command SXOSCON&STXON

signal 4

MCU control command SXOSCON&SRXON

signal 5

MCU control command STXON or (STXONCCA&CCA (channel no conflict))

signal 6

MCU control command SRFF&SXOSCOFF

signal 7

MCU control command - MCU decides the sampling time or active query according to the application, PWRDN is set high

signal 8

MCU control command - turn off the ADC after the sampling data is transmitted, and set PWRDN low

signal 9

UART serial port triggers external interrupt

[0052] In the figure: transformation 1-11 is shown in the table below:

[0053...

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Abstract

The present invention discloses a wireless sensor network energy conservation method which is designed basing on the cross-layer, a MCU Active mode and a MCU Sleep mode are arranged on the processor MCU in the wireless sensor network, an ADC Active mode and an ADC Sleep mode are arranged on an analog-to-digital converter ADC, a MTRU Sleep mode, a WTRU Tx mode and a WTRU Rx mode are arranged on a wireless date sending module / receiving module respectively, and sent from a surveillance center according to the control command designed by the primitive to control the accesses of the different modes after being sent by the processor MCU, so as to conduct a cross-layer energy conservation optimization from an application layer, a network layer, a link layer and a physical layer of the wireless sensor network. Under the premise of not influencing the application performance and function, the present invention reaches the effect of reducing the whole energy consumption of the nodes, and greatly prolongs the use life of the batteries used on the nodes and greatly lengthens the life span of the network.

Description

technical field [0001] The invention relates to the technical field of wireless sensor network energy saving, in particular to a wireless sensor network energy saving method based on cross-layer design. Background technique [0002] A general wireless sensor network node is mainly composed of four parts: power supply, data acquisition unit DAU, data processing unit DPU, and data sending and receiving unit DSRU, see Figure 10. Data Acquisition Unit (Data Acquisition Unit), DAU is mainly a sensing subsystem composed of a group of physical sensors and related transmission devices, which convert the physical phenomena of the surrounding environment into voltage or current signals, and the main power consumption comes from two types of devices The work of the sensor, the collection of the monitored physical quantity and the conversion and conditioning of the electrical signal, as well as the digital-to-analog conversion of the ADC device; the data processing unit (Data Processing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04B7/005G08C17/00
CPCY02B60/50Y02D30/70
Inventor 汪文勇向渝张骏李定
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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