Network monitoring and protocol analysis system of wireless sensor network
A wireless sensor network, network monitoring technology, applied in wireless communication, network topology, electrical components, etc., can solve the problems of unstable network, multi-hop network complexity, easy packet loss, etc., to increase the clock adjustment strategy, Guaranteed accuracy and improved accuracy
Active Publication Date: 2011-07-13
浙江科正电子信息产品检验有限公司
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Problems solved by technology
The wireless sensor network is a multi-hop ad hoc network composed of a large number of low-power nodes. The complexity and instability of the multi-hop network makes the network more prone to packet loss.
The event inference problem for wireless sensor networks is also more challenging than for single-hop wireless networks such as WLAN
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[0018] The technical solutions of the embodiments of the present invention will be described in further detail below with reference to the drawings and embodiments.
[0019] Such as figure 1 As shown, there are four types of node devices in the monitoring network: monitored nodes, monitoring nodes, monitoring workstations and summarizing workstations. The monitoring workstation is connected to the monitoring node through a serial port or a USB interface. The monitoring workstation sets the monitoring channel for the monitoring node, and the monitoring node forwards the monitored data packets to the monitoring workstation, and the monitoring workstation then processes the data frame through the specified protocol description file. Analyze and display the analysis results through various visualization tools. Since the sensor nodes may be distributed in a wide area, the monitoring range of a single monitoring node is limited. In order to monitor large-scale networks, multiple m...
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The invention relates to a network monitoring and protocol analysis system of a wireless sensor network. The traditional system mostly adopts offline merging manner and is suitable for small-scale monitoring of nodes. The system is characterized by comprising protocol analysis: analyzing original data frames according to the hierarchical structure and field format of a network protocol; record merging: merging the monitoring records of a plurality of monitoring nodes, providing time-ordered more complete monitoring records, and analyzing the whole network more completely; record reasoning: applying an FSM (finite-state machine) to a multi-hop network protocol for reasoning the number of data packets which are not monitored due to negligence and the packet receiving state; and data visualization: providing a configurable user interface and displaying data analysis results according to a plurality of visualization manners. According to the invention, a clock adjustment strategy is added, so that the accuracy of on-line merging is ensured; the FSM is applied to the data reasoning of the more complex multi-hop sensor network protocol, so that the data packet receiving state and the number of the data packets which are not monitored due to negligence can be reasoned in a route consisting of a multi-hop link in the network.
Description
technical field [0001] The invention belongs to the technical field of network monitoring of wireless sensor networks, and relates to a network monitoring and protocol analysis system of wireless sensor networks. Background technique [0002] Network monitoring and protocol analysis are crucial to the development and debugging of network protocols and the improvement of network operation efficiency. Wired networks have reliable transmission media and unified network protocol standards, and academia and industry have developed a large number of network monitoring tools. In wireless networks, channel conflicts and instability of link quality increase the difficulty of monitoring wireless networks. In wireless sensor networks, due to the lack of a unified network architecture and network protocol standards, and the limited resources of network nodes, it brings more challenges to the monitoring of wireless sensor networks. [0003] In wireless sensor networks, network monitori...
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Inventor 徐向华万健童超张伟黄杰裘炅
Owner 浙江科正电子信息产品检验有限公司