Standing Wave Amplification for Ladle Slag Vibration Detection
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Solution Overview
Problem
Existing ladle slag vibration signal detection devices have a low true alarm rate due to the transmission of weak transverse or longitudinal waves, which are affected by external vibrations, leading to interference and reduced accuracy in controlling slag flow.
Innovation Solution
A standing wave amplification device that uses a sensing rod with two fixing support means to superimpose vibration waves from different points on the operating arm, forming a standing wave that resonates with the sensing rod, enhancing wave amplitude and reducing interference, and a vibration sensor to detect the amplified standing wave for improved alarm accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a telescopic pipe is used to transmit vibration signals from the shroud protective tube, then the vibration signal can be transmitted to the detection device, but the transmitted waves are weak transverse or longitudinal waves that are easily affected by external vibrations, resulting in low true alarm rate
Solution Approach 1:
The patent applies mechanical vibration principle by using a sensing rod to generate standing waves through resonance. The sensing rod is excited to vibrate at its natural frequency, creating standing waves with fixed nodes and antinodes. This resonance-based vibration approach amplifies the signal and makes it less susceptible to external interference compared to simple wave transmission through telescopic pipes.
Solution Approach 2:
The patent changes the physical state of signal transmission by transforming weak traveling waves into amplified standing waves. By adjusting the excitation frequency to match the natural frequency of the sensing rod, the system achieves resonance conditions that dramatically increase vibration amplitude. This parameter change from ordinary wave transmission to resonant standing wave generation resolves the contradiction between signal transmission and interference resistance.
2Measurement precision
If vibration waves are transmitted in one direction from the telescopic end to the vibration sensor, then the detection device can detect the signal, but the wave amplitude remains weak and the true alarm rate is affected
Solution Approach 1:
The sensing rod is excited to vibrate at its natural frequency, creating standing waves with fixed nodes and antinodes. This resonance-based vibration approach amplifies the signal and makes it less susceptible to external interference compared to simple wave transmission through telescopic pipes.
Solution Approach 2:
The patent changes the physical state of signal transmission by transforming weak traveling waves into amplified standing waves. By adjusting the excitation frequency to match the natural frequency of the sensing rod, the system achieves resonance conditions that dramatically increase vibration amplitude.
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 standing wave amplification device significantly improves the true alarm rate by amplifying vibration signals and filtering out interference, providing stronger and more reliable detection of ladle slag conditions, with adjustable fixing support means to accommodate varying frequencies in different production environments.
Implementation Method 1
the two fixing support means acquire vibration waves respectively from two different positions on the operating arm, and transmit the acquired vibration waves to the sensing rod, the vibration waves transmitted are superimposed on the sensing rod to form a standing wave
Implementation Method 2
forming a standing wave that resonates with the sensing rod, enhancing wave amplitude
Data Source
AI summary
A standing wave amplification device for vibration signal collection includes a sensing rod (11) acting as standing wave transmission medium. A standing wave formation device includes two fixing support devices (12) distributed along the axial direction and connecting the sensing rod (11) to an operating arm (14). The two fixing support devices (12) respectively collect vibration waves and transmit them to the sensing rod (11) from two different locations of the operating arm (14). The vibration waves are superimposed to form a standing wave on the sensing rod (11). A vibration sensor (13) is connected to the sensing rod (11) and the vibration sensor (13) is between the two fixing support devices (12). A wave detected by the vibration sensor (13) is the standing wave. Compared with transverse wave or longitudinal wave transmitted in the transmission medium of prior art, the standing wave has advantages of larger amplitude and more obvious vibration effect. A ladle slag vibration signal detection method based on the device also has said advantages. The sensing rod (11) can make physical resonance, by which the standing wave signal is amplified and real warning rate of ladle slag is improved effectively.