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Sleep scheduling method for wireless sensor network

A technology of wireless sensors and scheduling methods, applied in data exchange networks, transmission systems, digital transmission systems, etc., can solve problems such as data loss, data transmission insecurity, waste of resources, etc., achieve good versatility, ensure safety, and save power Effect

Inactive Publication Date: 2009-05-06
吉林市曼博科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

In this method, the cluster head cannot stop working first, and the life of the cluster head directly affects the use of the entire network; moreover, all data must be forwarded by the cluster head, which makes the cluster head need to receive a large amount of data, and the load is relatively large. Large, it is easy to cause data loss, making data transmission in an unsafe state; and the cluster head has to monitor the common nodes all the time, waiting for the normal nodes to wake up, which wastes a lot of resources

Method used

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  • Sleep scheduling method for wireless sensor network
  • Sleep scheduling method for wireless sensor network
  • Sleep scheduling method for wireless sensor network

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Embodiment

[0033] A typical wireless sensor network structure diagram provided by the present invention can be found in Figure 4 shown.

[0034] Such as figure 1 as shown, figure 1 It is a schematic diagram of the structure of a general node of a wireless sensor network. The node at least includes a sensor interface unit 10, a microprocessor unit 11, a radio frequency transceiver unit 12, a USB interface unit 14, a level conversion and buffer unit 15, a storage unit 16, and a power management unit 17; The serial interface SPI and the radio frequency transceiver unit 12 receive and send data; the microprocessor unit 11 communicates with the PC through BSL and UART; the sensor interface unit 10 mainly provides an interface for external sensors.

[0035] Such as figure 2 as shown, figure 2 The dormancy scheduling flowchart provided by the present invention. In an established network, each device adopts a unified dormancy strategy. In this strategy, the working time of the device i...

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Abstract

The invention relates to a wireless sensor network application technology field, discloses a dormant scheduling method for wireless sensor network comprising: timing dormancy, timing wake-up, working clock control, collected data storing, delayed retransmission. The inventive method employs clock module and data memory module on hardware node, integrates dormancy and working of node of wireless sensor network based on time synchronization; node dormancy time is longer than working time to achieve aim of electricity-saving; during node dormancy, communication chip of node is closed, and any activity of node except data collection stops; when node is waken up, communication chip is reopened for communication. The data storage and delayed retransmission ensures reliability of communication. Dormancy-awaking scheduling of node is implemented, energy consumption of node is reduced, which satisfies application demand of wireless sensor network node.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, in particular to sleep scheduling technology. Background technique [0002] Wireless Sensor Network (WSN for short) is considered to be one of the most important technologies in the 21st century. It is a network in which many sensors communicate with each other, process and transmit information through wireless communication. The network integrates sensor technology, embedded computing technology, distributed information processing technology and communication technology. to the desired user. Wireless sensor networks have a wide range of uses in military, industry, transportation, security, medical, detection, and home and office environments. Their research, development, and application are related to various major aspects such as national security and economic development. In recent years, It has attracted extensive attention and investment internationally. [0003] The wireless senso...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L12/28
CPCY02B60/50
Inventor 王瑞曹英晖李瑛琪李永权滕远坤
Owner 吉林市曼博科技有限公司
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