Rotating Screen Storm Detection Device Signal Processing
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Solution Overview
Problem
Existing storm detection devices face challenges with complex signal processing and external disturbances such as rain, hail, and dust, which complicate the measurement of atmospheric electrostatic fields.
Innovation Solution
A storm detection device featuring a rotating screen with a disc having slots that uncover electrodes to subject them to the electrostatic field, producing a sinusoidal signal, and a protective cylinder to minimize external interference, along with a central unit for signal processing to determine storm risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a rotating screen with multiple discs is used to alternate exposure of electrodes to the electrostatic field, then the measurement function is achieved, but the signal shape becomes complex and processing is complicated
Solution Approach 1:
The rotating screen is divided into multiple discs (at least two), each with specific geometric characteristics. The segments between discs create distinct exposure periods for the electrodes, generating a multi-harmonic signal that is easier to process than the complex signal from single-disc designs
Solution Approach 2:
The geometric parameters of the rotating screen (number of discs, disc area ratios, segment configurations) are optimized to produce signals with specific frequency characteristics. This allows the signal to have predictable harmonic content that simplifies processing through frequency-domain analysis
2Measurement precision
If electrodes are exposed to the atmospheric electrostatic field, then storm detection is enabled, but external disturbances such as rain, hail, snow or dust affect the measurement
Solution Approach 1:
The rotating screen periodically exposes and shields the electrodes in a cyclic manner. During rotation, the screen provides shielding from external disturbances like rain and dust, while during exposure periods, the electrodes measure the electrostatic field. This periodic action separates measurement from disturbance exposure
Solution Approach 2:
The rotating screen extracts and isolates the measurement function from the harmful environmental factors. By physically separating the electrode exposure time from environmental contamination time through rotation, the measurement is taken out from continuous exposure to disturbances
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
The device provides a robust and simplified signal processing capability, effectively detecting changes in the atmospheric electrostatic field and minimizing external disturbances, enabling accurate storm detection.
Implementation Method 1
measuring the atmospheric electrostatic field
Implementation Method 2
subjecting a first pair of measurement electrodes to the atmospheric electrostatic field
Data Source
Figure 1~7
Figure 2~4
Figure 5
AI summary
Storm detection device (1) comprising at least one pair of electrodes for measuring the atmospheric electrostatic field, a rotating screen (5), capable of simultaneously subjecting each electrode of said at least one pair of electrodes to the atmospheric electrostatic field and then of simultaneously isolating each electrode of said at least one pair of electrodes from the atmospheric electrostatic field, and a central processing unit capable of processing signals coming from said electrodes in order to determine a possible risk of a storm, characterized in that said rotating screen comprises a disc having slots capable of exposing said electrodes during a portion of a revolution of said rotating screen in order to subject them to the atmospheric electrostatic field.