Topology management method based on event-driven wireless sensor network

A wireless sensor and network topology technology, applied in network topology, power management, wireless communication, etc., can solve problems such as energy consumption and shorten network life.

Active Publication Date: 2020-10-27
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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This kind of method will cause unnecessary cluster communication overhead in most of the cluste...

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  • Topology management method based on event-driven wireless sensor network
  • Topology management method based on event-driven wireless sensor network
  • Topology management method based on event-driven wireless sensor network

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[0034] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0035] Embodiments of the present invention relate to an event-driven wireless sensor network topology management method, such as figure 1 shown, including the following steps:

[0036] Step 1: The nodes are randomly deployed to the monitoring area, communicate with the base station to record the hop count, and save it in the routing table. All then go to sleep, waiting for an event to occur. In this step, all sensor nodes a...

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Abstract

The invention relates to a topology management method based on an event-driven wireless sensor network. The method comprises the following steps that when sensing that an event occurs, a node enters apre-activated state from a dormant state, and conducts first-stage redundancy determination according to the position of a neighbor node and a sensing range, the node determined to be redundant returns to the dormant state, and other nodes compete for a cluster head, and completes a clustering operation; the cluster head sends an activation signal to a relay node on a path according to a routingtable, meanwhile, member nodes in the cluster, before sending the sensing data to the cluster head, carryes out second-stage redundancy determination, the node determined to be redundant maintains a pre-activation state, and the other member nodes in the cluster send the sensing data to the cluster head; the cluster head carries out fusion processing on the sensing data and then transmits the sensing data to a base station according to the path in the routing table; and when a target moves to a cluster edge, a prediction clustering mechanism is triggered. According to the method, the high real-time performance and reliability of data can be ensured, and the network energy consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of event-driven wireless sensor networks, in particular to an event-driven wireless sensor network topology management method. Background technique [0002] With the advancement of manufacturing technology combining sensing technology and wireless communication technology, tiny sensor nodes can be densely deployed in required areas to form a large-scale wireless sensor network. The event-driven wireless sensor network has outstanding advantages in detecting emergencies, and can be widely used in many fields such as fire, earthquake, urban traffic, animal whereabouts, and space exploration. [0003] Specifically, the advantages of the event-driven network are: first, the sensor nodes can track and sense the target, so that the data has better fidelity; It is sent to the base station at a time, which has a high degree of real-time performance; thirdly, the sensor network adopts a discontinuous sensing method,...

Claims

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Application Information

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IPC IPC(8): H04W40/22H04W40/24H04W52/02H04W84/18
CPCH04W40/22H04W40/246H04W52/0248H04W84/18Y02D30/70
Inventor 曲志毅王江郑斌祺金帅臣刘建坡向浩
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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