Hydrometeor Detection Device Atmospheric Pressure Correction
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Solution Overview
Problem
Existing hydrometeor detection systems, particularly those measuring precipitation, experience inaccuracies due to variations in altitude above sea level, leading to errors in measurement parameters.
Innovation Solution
The method and apparatus account for atmospheric pressure to adjust hydrometeor size estimation, with higher pressure resulting in larger hydrometeor size at the same speed, and integrate pressure measurement to improve accuracy, especially at different altitudes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If precipitation is measured using mechanical impulses from hydrometeors striking a detector surface, then precipitation amount and intensity can be detected, but measurement accuracy deteriorates at higher altitudes above sea level
Solution Approach 1:
The patent applies parameter changes by adjusting the detection threshold and calibration parameters based on atmospheric pressure variations. The system modifies its measurement parameters dynamically according to the prevailing atmospheric conditions, specifically adjusting for pressure changes that occur with altitude variations, thereby maintaining measurement accuracy across different elevations.
Solution Approach 2:
The patent implements feedback mechanisms by continuously monitoring atmospheric pressure and using this information to correct precipitation measurements. The system incorporates pressure data into its measurement algorithm, providing real-time corrections that compensate for altitude-related measurement errors and improve overall measurement precision.
2Measurement precision
If atmospheric pressure is measured and used to correct hydrometeor size estimation, then measurement accuracy improves, but device complexity increases
Solution Approach 1:
The patent applies universality by integrating the pressure measurement function into the existing precipitation sensor system. The same detection device serves dual purposes: measuring precipitation and simultaneously measuring atmospheric pressure for correction purposes. This multi-functionality approach improves measurement accuracy without proportionally increasing device complexity.
Solution Approach 2:
The patent uses atmospheric pressure as an intermediary parameter to mediate between altitude variations and precipitation measurements. Instead of directly measuring altitude and creating complex correction models, the system uses pressure as an intermediate variable that naturally correlates with both altitude and precipitation characteristics, simplifying the correction algorithm.
3Measurement precision
If pressure measurement is permanently integrated in the measurement device, then measurement accuracy improves regardless of location, but manufacturing complexity increases
Solution Approach 1:
The patent applies merging by combining the pressure sensing element with the precipitation detection housing and electronics. The pressure sensor is integrated into the same physical device structure that houses the precipitation detector, allowing both measurements to be taken simultaneously without requiring separate external equipment. This integration improves measurement accuracy while keeping manufacturing complexity manageable through shared structural components.
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 approach enhances measurement accuracy, particularly in mountainous areas, by correcting for altitude variations and providing precise measurements regardless of location, through a suitable algorithm that considers atmospheric pressure changes.
Implementation Method 1
sensors measuring precipitation in its various forms (particularly water, snow, and hail), which are based on detecting the mechanical impulses created when hydrometeors strike a detector surface
Implementation Method 2
the higher the measurement takes place, the smaller a hydrometeor with the same velocity will be estimated to be. According to a preferred embodiment of the invention, the atmospheric pressure is measured at least substantially simultaneously with the precipitation measurement
Data Source
AI summary
A method and apparatus in connection with a hydrometeor measuring device. According to the method, the amount of precipitation is determined with the aid of the number and size of the hydrometeors. The determining of the size of the hydrometeors is altered as a function of the prevailing atmospheric pressure, in such a way that, the higher the atmospheric pressure, the larger a hydrometeor with the same speed will be estimated to be.