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A method of energy relay in time-sharing wireless sensor network

A wireless sensor, time-sharing technology, applied in circuit devices, electrical components, etc., can solve the problems of low transmission efficiency and large energy loss, and achieve the effect of expanding transmission distance, improving instantaneous energy power, and overcoming large energy loss.

Active Publication Date: 2018-08-14
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the energy transmission process of electromagnetic waves, there are problems of large energy loss and low transmission efficiency.

Method used

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  • A method of energy relay in time-sharing wireless sensor network
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  • A method of energy relay in time-sharing wireless sensor network

Examples

Experimental program
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Effect test

Embodiment 1

[0028] As shown in Figure 1-6.

[0029] An energy relay method in a time-sharing wireless sensor network, comprising the following steps:

[0030] 1) The source node sends energy to the relay node; the source node continuously transmits energy to the relay node through microwave;

[0031] 2) The relay node stores the received energy in the battery of the relay node; when the power of the battery of the relay node is greater than or equal to the threshold P x When , the relay node starts to send energy to the destination node;

[0032] 3) The destination node receives the energy sent by the relay node and uses it for its own normal work. The destination node receives the energy sent by the relay node, and the instantaneous power of the energy meets the power required by the normal operation of the destination node, so as to maintain the destination node to work normally for a long time.

Embodiment 2

[0034] The energy relay method in the time-sharing wireless sensor network described in Embodiment 1 differs in that the source node transmits energy to the relay node, and the relay node transmits energy to the destination node in an amplification and forwarding manner.

Embodiment 3

[0036] The energy relay method in the time-sharing wireless sensor network as described in embodiment 1, its difference is that, the condition that the receiving power of relay node and the transmission power of relay node should satisfy is: (P r1 -P c )μT≥P t2 t, where P r1 is the received power of the relay node, P c is the power consumption of the relay node itself, μ is the conversion efficiency of the battery of the relay node, P t2 is the transmit power of the relay node, T is the power supply time of the source node for the relay node, and t is the working time of the destination node. Energy is lost during the process of relay node amplifying and forwarding energy.

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Abstract

The invention relates to an energy relaying method for a wireless sensor network with a time-sharing operation mode. According to the energy relaying method for the wireless sensor network adopting the time-sharing operation mode, energy power supply for a target node is improved by adopting an SF (store and forward) way; namely, the energy received from a source node is stored in a relaying node storage battery by a relaying node firstly; and then the stored energy is emitted to the target node at improved specific power. Therefore, the wireless power transfer distance is expanded, and instantaneous energy power obtained by the target node is improved, so that continuous and normal operation of the target node can be ensured.

Description

technical field [0001] The invention relates to an energy relay method in a time-sharing wireless sensor network, belonging to the technical fields of wireless energy transmission and wireless sensor networks. Background technique [0002] In the application of wireless sensor networks, the battery capacity of sensor nodes is a key factor restricting its development. In the application fields of wireless sensor networks (military field and environmental monitoring field, etc.), it is unrealistic to replace the wireless sensor nodes with exhausted battery energy one by one; although the wireless sensor nodes have tended to consume less and smaller , if only powered by its own power supply, its small and flexible advantages will be limited. [0003] Using Energy Harvesting (Energy Harvesting) technology can enable wireless sensor nodes to obtain energy from the environment and have the ability to replenish energy, so that wireless sensor nodes can continue to work. Sources o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J50/50
Inventor 陈涤赵森梁昊常银惠侯学辉范聪聪
Owner SHANDONG UNIV