Networking method and system for wireless sensor network based on multiple sink nodes
A wireless sensor and multi-convergence node technology, applied in wireless communication, star/tree network, advanced technology, etc., can solve problems such as long path, limited application range, success rate of network life data collection and delay impact, etc.
Active Publication Date: 2015-04-01
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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However, when the network scale is large, the number of hops from the sensor node to the sink node will increase sharply, and the path will become very long. In addition to the instability of the wireless link itself and the hot spot problem of the sink node, the collected transmission The transmission of sensory data to the aggregation node will experience a large delay, the probability of successful transmission will also be reduced, and the energy consumption caused by a single sensory data transmission will also become very large. Therefore, the life of the network and the success of data collection The rate and delay will be seriously affected
[0004] At present, there are few networking methods based on multi-sink nodes, which can also be divided into two sub-categories: one category is a networking method that can only be applied to belt-shaped monitoring objects such as rivers, and this method has a wide range of applications. limitations
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[0081] The method and system of the present invention will be further described below in conjunction with the accompanying drawings.
[0082] The invention proposes a networking method for a large-scale sensor network. The design of common nodes is characterized by:
[0083] (1) Ordinary nodes are divided into synchronous working state and asynchronous working state. Ordinary nodes go through an initialization phase, in which a routing path is established for the first time, and if the route is successfully established, it will enter the synchronous working state; otherwise, it will enter the asynchronous working state.
[0084] (2) In the synchronous working state, ordinary nodes work in a low duty cycle mode for several rounds and then go through a routing update process, and so on.
[0085] (3) The node shuts down the microprocessor module, the sensing module and the wireless communication module in each cycle of the dormant state. The microprocessor module is responsibl...
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The invention relates to a networking method for a wireless sensor network based on multiple sink nodes. The method is characterized by comprising the following steps of: 101, sending a control command for acquiring sensor data to the network by a control server according to demand; 102, acquiring the sensor data and sending to the sink nodes by ordinary nodes; 103, collecting the acquired sensor data, sending commands for acquiring the sensor data to the ordinary nodes and simultaneously sending the acquired sensor data to a wireless base station by the sink nodes; 104, performing time synchronization of each of the sink nodes by a time server; 105, sending the sensor data received by the wireless base station to a data server through the network, simultaneously sending the commands for acquiring the sensor data to the sink nodes, and configuring a long-distance wireless communication module for the wireless base station; and 106, storing the acquired sensor data by the data server.
Description
technical field [0001] The present invention relates to the technical field of wireless sensor networks, in particular to a networking method and system for multi-sinking node wireless sensor networks. Background technique [0002] Wireless sensor network is a technology that integrates wireless communication, sensor technology, embedded technology and distributed computing. Through the collaborative work between sensor nodes, it can monitor and perceive various environments in real time. The connection between the computing world and the ternary world of human society is therefore also known as the "Internet of Things". Sensor networks have important application value, such as intelligent transportation, environmental monitoring, precision agriculture, national defense and military, smart home, security monitoring, emergency rescue and disaster relief and many other important fields have broad application prospects. At present, the promotion and application of this technol...
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IPC IPC(8): H04L12/44H04W40/00H04W52/02H04W56/00
CPCY02D30/70
Inventor 张招亮张乐黄庭培李栋崔莉
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI