| Nowadays,in the monitoring applications oriented to massive data transmission,based on the ability of receiving data of multiple channels at high speed in parallel,the multi-channel single-sink node improves the network throughput on a degree of oversensitivity.However,the deficiency in the multi-channel single-sink node,such as the limited memory resources of the main chip and the operation of the radio frequency module still restrict the work speed and processing capacity of large data.At the same time,in the application of wireless sensor networks,the requirement of sampling rate is uncertain for different application scenarios.In view of the above problems,the design of the software of the multi-channel single-sink node is presented,a double buffering mechanism of parallel and serial processing in the multi-channel single-sink node is proposed,and the method of dynamically configuring the sampling rate in the multi-channel wireless sensor network on this basis is designed.The main research contents and innovative work of this thesis are as follows:Firstly,based on the SI4463 wireless radio frequency module,the design of the software of the mult i-channel single-sink node is presented,a double buffering mechanism of parallel and serial processing in the multi-channel single-sink node is proposed,and the efficiency of network throughput of the multi-channel wireless sensor network which is constructed is improved.Secondly,based on the multi-channel wireless sensor network which is constructed by the multi-channel single-sink node,the method of dynamically configuring the sampling rate is designed which allows for wireless configuring online the wireless parameters such as sampling rate.Thirdly,combined with the software functions,the performance of multi-channel single-sink node is tested,and the function of the designed software of dynamically configuring the sampling rate in multi-channel network is verified experimentally. |
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