A radiosonde using a humidity sensor array with a platinum resistance heater and multi-sensor data fusion.

Area of Science:

• Atmospheric Science
• Meteorological Instrumentation
• Sensor Technology

Background:

• High-altitude environments pose challenges for meteorological sensors, particularly humidity sensors prone to condensation.
• Accurate measurement of atmospheric temperature, humidity, and pressure is crucial for weather forecasting and climate monitoring.

Purpose of the Study:

• To design and implement an advanced radiosonde system capable of reliable atmospheric data acquisition.
• To address and overcome the issue of humidity sensor condensation in low-temperature, high-altitude conditions.

Main Methods:

• Development of a capacitive humidity sensor array with a platinum resistance heater using micro-electro-mechanical-system (MEMS) technology.
• Utilization of a high-purity platinum resistance wire for precise meteorological temperature measurement.
• Application of multi-sensor data fusion techniques for processing atmospheric data.

Main Results:

• The integrated platinum resistance heater effectively prevented humidity sensor condensation, reduced response times, and enhanced sensitivity.
• The humidity sensor array improved measurement accuracy and provided reliable initial humidity data.
• Multi-sensor data fusion successfully eliminated measurement uncertainties, leading to accurate meteorological change reflection.

Conclusions:

• The developed radiosonde system offers a robust solution for high-altitude atmospheric measurements.
• The innovative humidity sensor design and data fusion techniques significantly enhance the reliability and accuracy of meteorological data collection.