Movable Radiation Screen for Meteorological Temperature Correction

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing meteorological temperature measurement systems are disrupted by solar and thermal radiation, which cannot be fully corrected due to the enclosure heating up and radiative heat transfer, affecting the accuracy of temperature readings.

Innovation Solution

A movable radiation protection screen, driven by an electric motor, is used to shade the measuring system, allowing for controlled exposure to radiation, and data processing to correct temperature measurements by correlating radiation input with temperature changes using a linear regression model.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a fixed radiation protection screen is used to shade the measuring system, then the protection against solar and thermal radiation is improved, but the ability to adapt to varying radiation conditions deteriorates

Engineering Contradiction:

Improveradiation-induced heatingVSAvoidadaptation to varying radiation conditions

Core Design Contradiction:

Object-affected harmful factorsVSAdaptability or versatility

Solution Approach 1:

The radiation protection screen is made movable instead of fixed, allowing it to dynamically adjust its position according to varying radiation conditions. The screen can be moved between different positions (e.g., shaded and unshaded) to adapt to changing solar and thermal radiation environments, resolving the contradiction between providing protection and maintaining adaptability.

Inventive Principle:

Principle #15Dynamics

2Object-affected harmful factors

If the measuring system is continuously shaded to protect from radiation, then the protection against radiation-induced heating is improved, but the measurement precision deteriorates due to inability to capture true ambient temperature under various radiation conditions

Engineering Contradiction:

Improveradiation-induced heatingVSAvoidtemperature measurement accuracy

Core Design Contradiction:

Object-affected harmful factorsVSMeasurement precision

Solution Approach 1:

The radiation protection screen is moved periodically between shaded and unshaded positions during the measurement process. By alternating between these states and using data processing methods to analyze temperature changes, the system can differentiate between radiation-induced heating and true ambient temperature, thereby maintaining measurement precision while protecting from excessive radiation heating.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The system uses feedback from temperature measurements taken under different radiation conditions (shaded and unshaded) to calculate and correct for radiation influences. The data processing unit analyzes the temperature differences and applies correction algorithms to determine the true ambient temperature, resolving the contradiction between protection and measurement accuracy.

Inventive Principle:

Principle #23Feedback

3Adaptability or versatility

If a movable radiation protection screen is used to adapt to varying radiation conditions, then the adaptability is improved, but the device complexity increases

Engineering Contradiction:

Improveadaptation to varying radiation conditionsVSAvoidcomplexity of movable screen mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The radiation protection screen is divided into multiple independently controllable segments rather than using a single complex movable structure. Each segment can be positioned separately, allowing for simpler mechanical implementation while maintaining the ability to adapt to varying radiation conditions. This segmentation reduces the overall device complexity compared to a fully movable screen.

Inventive Principle:

Principle #1Segmentation

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

This method effectively corrects for the influence of solar and thermal radiation on temperature measurements, providing accurate and stable readings by accounting for inertia and varying radiation conditions, thereby improving the reliability of meteorological data.

Implementation Method 1

at least one movably arranged radiation protection screen (103), which is designed to shade the measuring system (102) completely or partially

Methodology Applied

Scientific EffectRadiation shielding: Absorption (EM radiation)

Implementation Method 2

measuring the temperature with maximum radiation input... measuring the temperature with minimized radiation input

Methodology Applied

Scientific EffectThermal radiation detection: Thermal Radiation

Data Source

PatentEP3959492B1Method, assembly and use of the assembly for correcting meteorological temperature measurements in respect of the influence of solar and thermal radiation

Publication Date: 2024.02.14 TECH UNIV ILMENAU

Figure 1~2
Figure 3

AI summary

The invention relates to a method, an assembly and the use thereof for taking into account the influence of solar and thermal radiation on the measured value of meteorological temperature measurements. With knowledge of the exact influence, it is made possible to correct the recorded measured values of the temperature in this respect. This is done by creating a defined shadow path. Thus, the general irradiation condition and, as a result, the power coupled in by the radiation is varied. The generated fluctuation of the temperature values allows local regression to a corrected temperature value at a minimized radiation level.