Vibration analysis 对比 Sonic Tools SVM 的使用情况和统计数据
The application analyzes the data from the phone's accelerometer and builds a vibration spectrum. This allows the evaluation of not only the strength and frequency of the vibration, but also the speed of rotation of various mechanisms: fans, motors, various rotating components; since the vibration frequency often (but not always) coincides with the frequency of rotation. The application will be useful in determining the quality of fans and motors, in determining whether their actual parameters coincide with the ones declared by the manufacturer, it will find its uses in monitoring of malfunctions (e.g. in bearings) or while testing the quality of assembly and balancing of the homemade mechanisms with rotating parts.
Do not expose your iPhone to an excessive vibration, as it may break. If the analyzed vibration is too strong, use a foam material pad, or put your iPhone at a distance where the force of the vibration is not dangerous to your device. In addition to decreasing vibration for the iPhone, a foam pad improves contact between the iPhone and the vibrating part, which makes the transmission of vibration more accurate and produces better results.
BE SURE TO READ THE EXAMPLES OF THE VIBRATION SPECTRUM ANALYSIS AT THE APPLICATION WEB SITE (usefulmobileapps.com).
Features of the full version of the application:
• The choice of units of measurement. X-axis: Hz or RPM. Y-axis: g, m/s², ft/s², mm/s, in/s (ips), mm, mil, dB(A), dB(V).
• FFT size (for built-in accelerometer): 64, 128, 256, 512, 1024, 2048, 4096 (data collection time from 0.64 sec. to 40 sec.). For an accelerometer connected to the headphone jack FFT size from 2048 to 131072. For Bluetooth-accelerometer FFT size from 512 to 32768.
• Linear and logarithmic frequency scale.
• Linear frequency scale with maximum details (there is a choice for the displayed frequency range).
• Peak frequency detection.
• Values of any point (for frequency scale and sound wave (at maximum detail)).
• Selecting which axis of the accelerometer is to collect data.
• Octave bands (1/1,1/3,1/6,1/12).
• Window functions (Blackman, Hamming, Hann (Hanning), Blackman–Nuttall, Gaussian, Flat top).
• Peak hold.
• Exponential spectrum averaging.
• Taking a screenshot by lightly touching the screen.
• Root mean square (RMS, for vibration) or average value (AVG, for absolute values) for vibration wave. Values are calculated only for data displayed on the screen.
• Calibration of the built-in accelerometer. Need EXCLUSIVELY for measuring absolute acceleration values (gravitational acceleration). To activate the settings, turn on the "Vibration wave" mode and turn off the "Only fluctuations" mode. The parameters of the accelerometer depend on the temperature and voltage of the battery, and may change over time. To obtain stable values, the accelerometer should work for several minutes.
• Saving the measurement results in the application. Files with saved data (SavedData_[date]_[time].txt) can be copied to a desktop/laptop computer or transferred to another iPhone using iTunes.
• Export data to a text ("Y=[y1 y2... yn]", "y1;y2;... yn", "x1;y1\nx2;y2;...") or WAV file. Number of points is adjusted via "FFT size". To export octaves, use "x1;y1\nx2;y2;...".
• Accelerometer connects to the headphone jack (measurement range from 5 Hz to 24000 Hz).
• A stroboscope for an external accelerometer (the feature was proposed by Todd French from Los Angeles, California).
• Bluetooth accelerometer.
When converting acceleration into speed or displacement, at 0-5 Hz frequencies noise starts prevailing over vibration peaks, which is why such frequencies are disregarded when doing the conversion. Should vibration frequency exceed 50 Hz, the peak will be recorded at an incorrect frequency, and hence speed or displacement will not be calculated correctly. Unrealistically high speed or large displacement may be a sign of this kind of false frequency.
- Apple 应用商店
- 免费
- 公共事业
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This is an analyzer for sound, vibration and magnetic field.
As the source code of this is widely published as an open source software on GitHub, you can make custom version of this.
We welcome the users who want us to make customized version of this app.
* Sound (Analyzer [FFT / RTA / Spectrogram], Scope, RMS, Signal Generator)
* Vibration (Analyzer [FFT], Scope, RMS)
* Magnetic field (Scope, RMS)
You can pinch (zoom) and pan (scroll) on measurement screens other than RTA and spectrogram, and pan (band selection) on RTA. You can pause by tapping the measurement screen. Since the measurement time is displayed at the time of pause, it is suitable for leaving as evidence. Please take a screenshot of the screen in the system standard way.
[Application example]
· Record the present situation as quantitative evidence, such as by using recording and use it for the improvement of obstacles.
· Use it for science education.
· Use it along with the sweep generator to improve the acoustic characteristics of the listening room.
Note:
This application has an audio signal oscillation function, and depending on the operation it may generate sound that is harmful to the human body, so please refrain from using things like headphones or headsets. We are not responsible for damage caused by using that equipment.
The resolution of the spectrum analysis of speech is about 11 Hz inherent, however, the actual resolution is in the maximum of 3 Hz by interpolation processing. It is not the accuracy that can be used to tune an instrument. Please use the instrument tuning application for that purpose.
If you can not find the current point by zooming in or scrolling, you can return to the default state that you can see the whole picture by pressing and holding the measurement screen long.
For a good result with Octave RTA, we recommend using Window Function and Fast Latency Mode.
The adjustable range of the FFT/Scope/RMS gain is from -20 dB to 20 dB.
The adjustable range of the SP gain is from 0 dB to 80 dB.
The noise reduction threshold is from -80 dB to 0 dB.
Allows you to output the data of Sound Spectrum, Sound Spectrogram, and every RMS'.
You can use the data files by Files.app on iOS or iTunes File Sharing on Mac.
Please note that the output file of Spectrogram is not small not like other data files.
- Apple 应用商店
- 免费
- 公共事业
商店排名
- -
Vibration analysis与Sonic Tools SVM排名比较
对比 Vibration analysis 与 Sonic Tools SVM 在过去 28 天内的排名趋势
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Vibration analysis 对比 Sonic Tools SVM 的排名,按国家/地区比较
对比 Vibration analysis 与 Sonic Tools SVM 在过去 28 天内的排名趋势
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Vibration analysis VS.
Sonic Tools SVM
十二月 15, 2024