Design And Realization Of Transmission System For Dust Monitoring Data

In recent years,It had repeatedly appeared a number of moderate or severe haze weather with long duration and large area coverage in Xi'an,which has seriously affected the residents'daily life,work and health,and in the national air quality rankings,Xi'an has repeatedly ranked in the post.In order to solve the problems of the dust monitoring system,it has designed a kind of dust monitoring data wireless transmission system for Xi'an Chanba Ecological District in this paper,which can make the monitoring data of each monitoring point transferred to the corresponding gateway system in real time,and finally summarized to the remote monitoring points.This system is based on the WIFI mode of frequency reduction wireless transmission system,which consists of two parts,the embedded network processing module and the RF frequency conversion processing module.The embedded network processing module adopts the Qualcomm Atheros QCA9531 processor as the main CPU,and the RF processing module adopts the PCIe interface.This system mainly completes the data processing and the cable network of radio frequency conversion module,the main function of 2.4GHz driving frequency conversion to the 400MHz operating system.The operating system adopts by using OpenWRT,which is a Linux system running on embedded device.The wireless transmission system adopts the network port as the data port,the advantage of this method is that the testing data of dust monitoring equipment only needs to connect to the network,then it can use the wireless transmission channel of data transmission to the remote gateway in mobile,where the mobile signal is not good as a complement to other transmission equipment.In addition,the cost of the hardware is low and the configuration is simple,for which the system can be applied in each construction project of the construction site.The purpose of this thesis is mainly to design and realize the whole wireless transmission system.The corresponding instruments are used to test the system and the actual test results show that the system meets the actual needs.