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Partial charging method for passing time and space in wireless rechargeable sensor network

A sensor network and charging method technology, applied in network topology, wireless communication, electrical components, etc., can solve the problems of queue replenishment, no consideration of time, and low charging efficiency, achieving high throughput, no drop in charging efficiency, and small Mortality Effect

Active Publication Date: 2021-07-27
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

1) Many schemes only sort the charging requests according to the space priority, without considering the impact of time, resulting in the death of some nodes with a short remaining life because they cannot be charged in time
2) Most of the uncertain charging schemes do not replenish the queue well after discarding the nodes that cannot be charged in time in the current cycle, resulting in low charging efficiency in the current cycle

Method used

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  • Partial charging method for passing time and space in wireless rechargeable sensor network
  • Partial charging method for passing time and space in wireless rechargeable sensor network
  • Partial charging method for passing time and space in wireless rechargeable sensor network

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with accompanying drawing.

[0044] Partial charging method passing through space and time in wireless rechargeable sensor network, the process is as follows figure 1 Shown:

[0045] Step (1) Construct the wireless rechargeable sensor network WRSN charging model; including:

[0046] (1-1) If figure 2 , there is a set of sensor sets S={s in the sensor network 1 ,s 2 ...s N}, N identical sensors are randomly deployed in a two-dimensional plane area, a mobile charging car MC with limited energy, and a warehouse s that can replace batteries for MC 0 , a base station used to collect sensor information; the sensor network has a routing protocol for sensor data collection, the routing protocol transmits the sensor data from the sensor to the base station through the relay node; the sensor performs sensor data, transmission Energy is consumed both in data and in receiving it; since each sensor has a dif...

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Abstract

The invention discloses a partial charging method for passing time and space in a wireless rechargeable sensor network. According to an existing method, a sensor must be fully charged, and then a next node can be charged. According to the method, firstly, a wireless rechargeable sensor network charging model is constructed, invalid nodes in a charging path are deleted, and it is guaranteed that part of charging strategies can be smoothly executed in a charging queue; when the length of the charging queue is less than the specified length due to deletion of part of nodes, the queue length needs to be supplemented to ensure that the overall charging efficiency cannot be reduced; and finally, a partial charging strategy is execcuted to plan arrival time, residence time and a charging sequence for the mobile charging vehicle. The queue supplementing strategy considering time and space factors provided by the invention can ensure that the charging efficiency of the charging period is not reduced. According to the method, a partial charging mode is used for ensuring high throughput and low death rate of the system.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, and in particular relates to a charging method for passing time and space in a wireless rechargeable sensor network. Background technique [0002] Due to the breakthrough of wireless power transmission technology, wireless rechargeable sensor networks (Rechargeable WirelessSensor Networks, WRSN) have great application prospects in extending the life of the network. WRSN can operate for a long period of time without interruption or malfunction, enabling its widespread deployment in different civilian and military applications. In WRSN, the mobile charger (Mobile Charger, MC) is responsible for replenishing energy for all rechargeable sensors, and the sensors need to be charged in time before the power is exhausted, otherwise they cannot continue to operate. Therefore, the charging scheduling of MC becomes a prominent problem in WRSN. Currently, there are two scheduling methods i...

Claims

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Application Information

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IPC IPC(8): H04Q9/00H04W84/18H04W4/38
CPCH04Q9/00H04W84/18H04W4/38H04Q2209/88
Inventor 徐向华刘永攀王然
Owner HANGZHOU DIANZI UNIV