Fault restoration method and system based on multipath routing protocol of wireless sensor network

Abstract

The invention discloses a fault restoration method and system based on a multipath routing protocol of a wireless sensor network. The method comprises the steps that an aggregation node calculates theoptimal path F and multiple redundant paths f for the connection with each wireless node, an equipment state information table is established, and state information of the successfully connected wireless nodes is inserted into the equipment state information table; and wireless sensing signals of each wireless node are received in real time, and when it is discovered that a certain wireless nodeon the optimal path F does not receive the wireless signals, the emerging fault is inserted into the wireless sensor equipment state information table. According to the invention, the real-time reception of wireless sensing signals is set, and the multiple redundant paths f can be started to perform the data sending and transmitting operation when it is discovered that a certain wireless node on the optimal path F does not receive the wireless signals, so that the fault of wireless sensors can be monitored in time, the wireless sensor network can be timely restored, the network delay caused bythe wireless sensors is avoided, and the security and reliability of the system are improved.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, in particular to a fault recovery method and system based on a wireless sensor network multipath routing protocol. Background technique [0002] Wireless Sensor Networks (WSN) is a distributed sensor network whose ends are sensors that can perceive and inspect the outside world. The sensors in the WSN communicate wirelessly, so the network setting is flexible, the location of the device can be changed at any time, and it can also be connected to the Internet in a wired or wireless manner. A multi-hop self-organizing network formed by wireless communication. The sensor network realizes three functions of data collection, processing and transmission. Together with communication technology and computer technology, it constitutes the three pillars of information technology. A wireless sensor network (WirelessSensor Network, WSN) is a wireless network composed of a large number of stationary...

AI Technical Summary

Problems solved by technology

[0003] However, in the existing wireless sensor network, when a certain wireless sensor fails, the server of the wireless network cannot detect the location of the failure in time, so that the wireless sensor network cannot be repaired in time. For example, in the security system, when the door The wireless sensor in the magnetic area fails, and the server cannot repair the wireless sensor in time, so that thieves or others can enter the room through the doors and windows to steal, resulting in the loss of the owner's property and reducing the security system. safety and reliability

Moreover, when a wireless sensor fails, the sensed information cannot be fed back in time, resulting in a certain network delay, which is not conducive to the server's timely monitoring of the environment around the sensor, and then making necessary alarms and repair operations in time, further reducing system security. safety and reliability

Images