Energy trading method in wireless rechargeable sensor network

A sensor network and wireless sensor technology, applied in the field of energy trading strategies, can solve the problems of energy problems restricting the survival time of wireless sensor networks, etc., to achieve the effect of improving energy utilization, improving energy transmission efficiency, and increasing life cycle

Inactive Publication Date: 2018-11-02
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Moreover, the network nodes are mostly deployed in unmaintained and harsh environments, and in most cases the sensor nodes are used only once, and the energy problem has become an important issue restricting the survival time of wireless sensor networks.

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  • Energy trading method in wireless rechargeable sensor network
  • Energy trading method in wireless rechargeable sensor network
  • Energy trading method in wireless rechargeable sensor network

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] Sleep scheduling is an efficient means to prolong the life of the network. This method allows some nodes to be in a sleep state to save energy consumption of nodes. However, sleep scheduling alone cannot solve the problem of node energy limitation, and energy harvesting is another alternative technical method.

[0032] Wireless energy harvesting is a viable solution for energy transfer from charging nodes to sensor nodes. However, the efficiency of energy transfer has always been one of the bottlenecks in wireless energy transfer. Therefore, energy harvesting by wireless means is not always efficient or feasible. Moreover, small sensor nodes only have limited energy storage capacity, so the ability to store energy is very limited. In addition, energy leakage is also a problem that cannot be ignored in low-power sensor nodes.

[0033] The sensor node starts t...

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Abstract

The invention discloses an energy trading strategy in a wireless rechargeable sensor network, which comprehensively considers the energy acquisition, energy consumption and residual energy factors ofa network node and efficiently determines the sleep activation state of the node, thereby reducing the energy consumption of the network and prolonging the service life of the network. Each charging point acquires renewable energy and simultaneously transmits the renewable energy to a sensor node that generates an energy request; each sensor node selects to enter an activation or sleep state according to actual energy acquisition and use condition, and activates the node to collect and upload data to a base station. The charging node is considered a buyer and the sensor node is considered a buyer. As a buyer, the wireless sensor nodes want to maximize the benefits of being able to consume less time in the wireless transmission energy harvesting process and using own energy and collected energy as efficiently as possible.

Description

technical field [0001] The invention relates to an energy transaction strategy in a wireless rechargeable sensor network, and belongs to the technical field of sleep scheduling energy transmission in a wireless sensor network. Background technique [0002] Wireless sensor networks (Wireless Sensor Networks, WSNs), due to its high degree of interdisciplinary and broad application prospects, has attracted great attention from academia and industry all over the world. [0003] At present, wireless sensor networks are widely used in many fields to process sensitive information. The application scenarios include military, industrial, family, medical, marine and other environmental monitoring and many other fields. The energy, processing power, and communication capabilities of WSNs nodes are very limited, and they are easy to die due to energy exhaustion. This requires WSNs to reduce the energy consumption of nodes as much as possible and improve the life cycle of the network und...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/02H04W84/18H02J50/00H02J7/00
CPCH02J7/025H04W52/0261H04W84/18H02J50/00
Inventor 米顿张清华吕运容刘雁丛广佩李伟明张泽宇
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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