System for monitoring wind and sand based on wireless sensor network

Abstract

The invention discloses a system for monitoring wind and sand based on a wireless sensor network. The system comprises a plurality of data collection nodes, a plurality of base stations, a plurality of communication nodes and a remote control center, wherein the data collection nodes are fixedly deployed in a monitored region and are used for collecting the motion monitoring data of wind and sand in the positions of the data collection nodes; the base stations are deployed in the monitored region, and uploaded data can be processed and reported by the base stations; the communication nodes are arranged in the monitored region, and can randomly move under the action of the wind and encounter with the data collection nodes or the base stations in an opportunistic network form, and the data are downloaded from the data collection nodes by the communication nodes, or the downloaded data are uploaded to the base stations by the communication nodes when the communication nodes are encountering with the data collection nodes or the base stations; the remote control center is used for recycling the data which are processed by the base stations and processing the data in real time. The system for monitoring wind and sand based on the wireless sensor network can overcome the defects in the prior art, such as small monitored region, low data collection precision, poor flexibility, high cost and the like so as to realize the advantages of large monitored region, high data collection precision, excellent flexibility and low cost.

Description

technical field [0001] The invention relates to the technical field of wind and sand monitoring systems, in particular to a wind and sand monitoring system based on a wireless sensor network. Background technique [0002] Sandstorms are a relatively common natural phenomenon caused by special geographical environment and meteorological conditions. They mainly occur in deserts and their adjacent arid and semi-arid regions. Sandstorm-prone areas in the world are located in Central Asia, North America, Central Africa and Australia. The process of dust storm is extremely destructive to the ecosystem. It can accelerate land desertification, cause serious pollution to the atmospheric environment, significantly reduce urban air quality, and have negative effects on human health, urban transportation, communication and power supply. Due to the frequency of its outbreaks and the severity of its hazards, the research on the trend prediction of sandstorms has become a hot spot and foc...

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Problems solved by technology

[0019] The atmospheric boundary layer turbulence monitoring system in the windy sand flow or sandstorm environment can realize the measurement of the three-dimensional structure of the high Reynolds number wall turbulent flow, the measurement of the flow field characteristics of the windy sand flow or sandstorm, and the synchronization of the turbulence measurement and the dust transport measurement. The accuracy is high; however, the wind speed fluctuations during sandstorms are very strong. At this time, there is extremely strong turbulent exchange in the boundary layer, and the amount of data to be transmitted is huge. The requirements for the transmission experimental equipment are particularly high, and the bracket is not flexible. In addition, the acquisition cost of meteorological towers and experimental equipment is expensive, which is not conducive to large-scale laying

[0020] The shortcomings of the current near-ground wind and sand monitoring methods are: (1) The location of the equipment needs to be manually selected and fixed, limited by time, site and natural environment, and the collected data has certain geographical limitations; (2) Since the instrument is placed in the wind and sand environment, It itself will cause local interference to the airflow and wind and sand movement, which will cause changes in the wind and sand flow conditions in this area, thereby affecting the accuracy of data collection

In addition, a large number of researchers are also simulating and studying the macroscopic or microscopic movement characteristics of wind and sand through wind tunnels. However, the research on the law of the airflow field in the wind tunnel and the similarity research are not perfect, which makes the experimental results have certain limitations.

[0021] To sum up, in the process of realizing the present invention, the inventor found that there are at least defects in the prior art such as small monitoring area, low data collection accuracy, poor flexibility and high cost

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