A wireless sensor network charging method and device considering charging characteristics

A technology of wireless sensors and charging characteristics, applied in the direction of battery circuit devices, circuit devices, collectors, etc., can solve problems that have not been related to research, to maximize the number of rechargeable nodes, prolong life, and maximize the number of rechargeable nodes Effect

Active Publication Date: 2020-10-16
NANJING UNIV OF POSTS & TELECOMM
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  • A wireless sensor network charging method and device considering charging characteristics
  • A wireless sensor network charging method and device considering charging characteristics
  • A wireless sensor network charging method and device considering charging characteristics

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Embodiment Construction

[0034] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0035] In one embodiment, the network architecture model of the present invention is as figure 1 As shown, the wireless sensor network consists of a static base station (Base Station, BS), K mobile charging cars (Mobile Charger, MC) and N static sensor nodes (referred to as nodes), N nodes with the same capacity and life cycle Uniformly distributed in one dimension along the straight line, the base station provides charging power for the car. figure 2 Charging model graph for nodes. When the current energy En of node s1 is less than the threshold α, each car starts from the base station carrying energy to charge the node along the one-dimensional route. It is assumed here that all nodes initially have the same energy, including their working status, and their consumption is the same, so when the first node applies for charging, the rest wil...

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Abstract

The invention discloses a wireless sensor network (WSN) charging method and device considering charging characteristics. The method and device has the advantages that considerations to node charging characteristic factors during charging are initially proposed, and a corresponding charging model is established; when the energy of a sensor node is lower than 20%, the node is charged; when a charging mode is changed into a trickle mode (i.e., when the node energy reaches 80%), charging of the node is stopped, and a next node is charged; a large amount of charging time spent in the trickle mode is utilized for charging of other nodes, so that more nodes can be charged through mobile chargers within a cycle; and losses during the charging can be reduced through effective utilization of the charging characteristics, and the service lives of batteries can be prolonged through step charging, so that the life cycles of a WSN and the nodes can be maximized.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, and in particular relates to a wireless sensor network charging method. Background technique [0002] Wireless Sensor Networks (WSNs) is a new type of network composed of a large number of sensors deployed in the monitoring area in a self-organizing and multi-hop manner. It has the characteristics of low cost, low power consumption, and multiple functions. It is used in important fields such as environmental detection, military, smart home, and telemedicine. For example, a large number of nodes can be placed in remote areas for environmental prediction, etc., for example, to assist irrigation in agriculture, livestock breeding, etc. The power required for the work of sensor nodes all over the network is supplied by batteries, and the limited battery capacity becomes the main factor restricting the life cycle of the entire sensor network. In remote areas or areas that are not sui...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H04W84/18
CPCH02J7/0013H04W84/18Y02D30/70
Inventor 郭永安刘晓庆陈春玲朱洪波杨龙祥
Owner NANJING UNIV OF POSTS & TELECOMM
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