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Wireless sensor network MAC transmission method applied to bridge monitoring

A wireless sensor and transmission method technology, applied in network topology, wireless communication, advanced technology, etc., can solve problems such as incompatibility, and achieve the effect of saving energy, high throughput, and reducing delay

Active Publication Date: 2014-07-16
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

None of these protocols are suitable for wireless sensor networks for bridge monitoring

Method used

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  • Wireless sensor network MAC transmission method applied to bridge monitoring
  • Wireless sensor network MAC transmission method applied to bridge monitoring
  • Wireless sensor network MAC transmission method applied to bridge monitoring

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings. The entrances and exits of bridges are areas where traffic accidents frequently occur, and are characterized by ups and downs, requiring speed and weight limits for passing cars. Due to the complex road conditions, the risk of traffic accidents increases. The wireless sensor nodes are arranged at the entrance and exit of the bridge for real-time sensing to form a real-time monitoring wireless sensor network. Nodes can carry a variety of sensors, such as pressure sensors, laser speed sensors and temperature sensors, while collecting the weight, speed and road temperature of passing vehicles.

[0037]The invention designs a priority algorithm combining the data type received by the node and the frequency of information sent by the node. The algorithm uses an hour as a classification cycle to deduce the data type in the node by identifying the sensor type installed in the...

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Abstract

The invention relates to a wireless sensor network MAC transmission method applied to bridge monitoring. An MPMC-MAC protocol is combined with the type of data received by nodes and information sending frequency of the nodes to distribute priorities to the nodes, and channel distribution is carried out on the nodes according to the priorities and channel conditions so that it can be guaranteed that a node with a high priority sends the data preferentially. When information needs to be transmitted again due to the fact that channel collision occurs or node communication is interfered, a channel redistribution technique is adopted. According to the technique, channels are distributed to the nodes again according to the priority of the nodes, remaining energy of the nodes and retransmission times, and fairness of channel distribution is guaranteed. Additionally, according to the method, the active cycle of the nodes and the duration of a sleep cycle are adjusted dynamically so that energy can be saved, and time delay of transmission is reduced.

Description

technical field [0001] The invention relates to a wireless sensor network MAC transmission method applied to bridge monitoring, and belongs to the technical field of wireless sensor networks. Background technique [0002] Today, with the rapid development of cities, there are various bridges all over the city. The slopes and turns of the upper bridge and the lower bridge are places where traffic accidents frequently occur. Therefore, this paper will monitor the key areas of the bridge to avoid accidents. As a tool that can perceive real-time information around, wireless sensor network plays an important role in bridge monitoring. The MAC protocol is the basic protocol that affects the overall performance of wireless sensor networks, so it is of practical significance to design a MAC protocol for wireless sensor networks suitable for bridge monitoring. [0003] At present, the wireless sensor network MAC protocol is divided into three categories according to the channel sch...

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Application Information

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IPC IPC(8): H04W52/02H04W72/04H04W84/18
CPCY02D30/70
Inventor 任秀丽郗远浩
Owner LIAONING UNIVERSITY