Design of a Radiosonde Based on the WSN Technology

Abstract

In light of high power consumption, lofty communication cost, low data accuracy and other problems with existing radiosondes, a high-altitude data acquisition system was designed based on the WSM technology. For circuit design, the system utilized the STM32 chips as the control core and a low power sensor module to fulfill environmental data acquisition and geological location monitoring; the LoRa technology was employed to transmit data to the upper monitoring layer, whereby the upper computer administrator performed online monitoring of high-altitude meteorological data. For software design, the TDMA slot allocation protocol was improved to increase data transmission reliability and a dynamically weighted average fusion algorithm was applied to conduct a fusion experiment on data. The connectivity, reliability and operability of the system were validated in the experiment, which is of a positive significance for space weather data acquisition in China.