Photovoltaic Monitoring System Based On LoRa

Photovoltaic power generation can produce non-polluting,renewable clean energy.With the increasing awareness of environmental protection,countries are promoting the development of photovoltaic industry.However,the photovoltaic power generation changes with the varies weather,which adds a lot of uncertainty and intermittency to the power supply.In addition,the photovoltaic panel’s own factors also affect the photovoltaic power generation,so it is essential to monitor them.Because photovoltaic power plants are mostly built in remote areas and manual real-time monitoring is difficult,so wireless monitoring is applied to photovoltaic power generation,avoiding the impact of distance and geographical factors,saving human and material resources.This thesis applies LoRa on a long distance monitoring system of photovoltaic station and designs a photovoltaic monitoring system based on LoRa,the system gets environmental information and photovoltaic panels data through the LoRa terminal,and then uploads the data to Aliyun cloud platform by the gateway,staff can view the uploaded data through the Aliyun cloud platform in time.In this thesis,on the premise of meeting the requirements of photovoltaic monitoring and considering the low power consumption,STM32L151C8T6 microcontroller and SX1278 wireless transmission chip are selected for data collection points.Based on SX1278 chip and STM32L151C8T6,the circuit design of data collection points has completed.We design the software of data acquisition node about data acquisition through sensor modules,parameter configuration,data reception and transmission of SX1278 module.In addition,the development of Aliyun platform interface are completed.Finally,we test the photovoltaic monitoring system,including LoRa module transmission distance and packet loss rate,we also conduct the data error analysis.