Upper Air Simulation Chamber for Radio-Sonde Calibration
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Solution Overview
Problem
Conventional radio-sonde temperature and humidity calibration methods are inaccurate due to being performed under laboratory conditions that differ from upper air environments, leading to difficulties in maintaining metrological traceability and high accuracy, and are prone to interference and prolonged observation cycles.
Innovation Solution
An apparatus and method utilizing upper air simulation technology, including an isotemperature-isohumidity unit, sunlight generation, air supply, and vacuum pump, to simulate upper air conditions such as temperature, pressure, wind, and solar radiance, allowing for precise calibration of radio-sondes within an upper air simulation chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radio-sonde calibration is performed under conventional laboratory conditions, then the calibration process is simple and quick, but the calibration accuracy is low and metrological traceability is difficult to maintain
Solution Approach 1:
The patent creates a copy of the upper air environment within the calibration chamber by simulating key parameters (temperature, pressure, humidity, solar radiance) rather than performing calibration in the actual upper air environment. This allows accurate calibration without the complexities of field deployment while maintaining metrological traceability through controlled simulation conditions.
Solution Approach 2:
The calibration system dynamically adjusts multiple parameters (temperature, pressure, humidity, solar radiance) to match upper air conditions. By changing these physical parameters within the calibration chamber, the system achieves accurate simulation of upper air environment without requiring complex field equipment.
2Productivity
If conventional ground receiver is used for radio-sonde observation, then the observation setup is simple, but the observation cycle is prolonged to 2 hours and radio interference may occur
Solution Approach 1:
The patent performs calibration in advance under simulated upper air conditions before actual observation operations. This preliminary calibration ensures that the radio-sonde is optimized for upper air environment, enabling faster and more reliable observations without requiring complex real-time adjustments during the 2-hour observation cycle.
3Measurement precision
If radio-sonde calibration is performed under room pressure condition, then the calibration equipment is simple, but the calibration values have low accuracy and differ from upper air environment
Solution Approach 1:
The calibration chamber systematically changes pressure parameters from standard room pressure to simulated upper air pressure levels. This parameter adjustment, along with temperature and humidity control, creates an energy-intensive but highly accurate calibration environment that reproduces upper air conditions without requiring actual atmospheric deployment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate calibration of radio-sondes by simulating upper air conditions, improving measurement validation and allowing for shorter observation cycles, while maintaining metrological traceability and international standards compliance.
Implementation Method 1
a vacuum pump coupled to the isotemperature-isohumidity unit, allowing discharging air which passes through the isotemperature-isohumidity unit to the outside
Implementation Method 2
a sonic nozzle coupled to the air supply unit, allowing creating an air flow set at below a preset pressure
Implementation Method 3
a sunlight generating unit coupled to the isotemperature-isohumidity unit, allowing generating sunlight to be irradiated to the isotemperature-isohumidity unit
Data Source
AI summary
The present invention relates to an apparatus for calibrating temperature and humidity of a radio-sonde to be adapted to the upper air environment using an upper air simulation chamber including: an isotemperature-isohumidity unit calibrating temperature and humidity measured via the radio-sonde; a sunlight generation unit coupled to the isotemperature-isohumidity unit and generating sunlight to be irradiated to the isotemperature-isohumidity unit; an air supply unit coupled to the isotemperature-isohumidity unit and controlling the pressure and temperature of atmospheric air, allowing supplying air to the isotemperature-isohumidity unit; a sonic nozzle coupled to the isotemperature-isohumidity unit and creating an air flow set at below a set pressure; and a vacuum pump coupled to the isotemperature-isohumidity unit and discharging air which penetrates the isotemperature-isohumidity unit.