Design And Implementation Of Package Loss Monitoring System For Wireless Sensir Network Equipment Based On LoRa

In recent years,wireless sensor network technology has been continuously developed and applied widely,involving almost all fields of social and economic activities.Especially the emergence of Internet of Things wireless transmission technology represented by LoRa,this will be a new technological revolution.The development of test tools for LoRa devices is of great significance for the research and development of wireless sensor networks.Aiming at the WSN network based on LoRa equipment,this paper proposes a method of acquiring data in terminal equipment based on DMA communication and a packet loss detection method based on detection attribute,and designs a communication structure supporting code instrumentation and an improved multi-link HashMap data structure,as well as a packet matching algorithm based on the multi-link HashMap.We Designed and implemented a monitoring system for WSN equipment,which can perform real-time monitoring of packet loss by comparing the data packets of the terminal and the base station,and helps the hardware developer to analyze and manage the hardware device.LoRa devices have the characteristics of low power consumption,low transmission rate,and long-distance transmission,which results in limited processing capabilities of LoRa devices,the additional cost introduced by the traditional transmission data acquisition method will lead to system performance degradation.Therefore,this paper:(1)proposes the data acquisition method of the terminal device based on DMA communication,and designs a capable communication structure that supporting code instrumentation,and realizes the customization of monitoring attributes and the low cost of obtaining related attributes.(2)Based on this,the paper designs and implements PC monitoring software,and proposes an improved multi-link HashMap data structure and a packet matching algorithm based on the multi-link HashMap.At the end of the paper,the test of the monitoring system shows that the monitoring system can correctly obtain some attributes and data packet contents in the wireless transmission process of the LoRa terminal and the base station in this design.The data of the terminal and the base station are matched and calculated,and the packet loss rate of the system performance test is obtained,which provides an important way for the analysis and improvement of the Lora device.