Simple and effective
I’ve used this for several years to collect vibration signals from vehicles and trickier s for research purposes. It’s easy to use and I recommend to my students.
Vibration
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Description
Vibration is a true vibration spectrum analyzer using the built in accelerometers and gyroscope inside the iPod Touch and the iPhone and starting with version 3.x it can sample the built in microphone and the Digiducer professional quality external USB accelerometer. It acquires and displays time series data, optionally removes DC bias, applies a Hamming window and performs an FFT on each channel to produce frequency spectra. The 3-channel accelerometer has a sensitivity of approximately 0.02g and a range of ±2g making the iPhone and iPod Touch sensitive enough to analyze the vibration of most moving machinery.
In many applications Vibration can be an excellent portable alternative to a commercial spectrum analyzer. In predictive maintenance applications Vibration can help identify bearing defects, shaft misalignment, imbalance, and structural resonant frequencies. Vibration is also useful for monitoring the acceleration of part and material handling equipment.
The software is flexible and easy to use. It was written to emulate the familiar oscilloscope based spectrum analyzer. Sample rate and sample delay are easily adjustable and the user can select the length of the data acquisition and the vertical scale used for the display. Once the settings are configured simply press the sample button on the device or on your Apple Watch. When a test is complete the resulting data can be emailed to your desktop computer for documentation purposes.
Features:
• Sample the built in accelerometer or gyroscope, the internal Microphone or the professional Digiducer USB products including the 333D01, 333D04, 633A01 and 435B39. Additional Digiducer accelerometer features can be enabled via in-app purchase.
• Adjustable sample rate from 10Hz to 100Hz for the internal sensors and 1 kHz to 48 kHz for the internal microphone and the Digiducer accelerometer (with in-app purchase)
• Trigger sampling and review settings using the Apple Watch companion app.
• Auto repeat and auto save allow data to be taken over extremely long periods of time.
• Selectable data length from 256 to 4096 samples
• Variable start delay from 0 to 20 seconds
• Adjustable vertical scale for time series data
• DC Remove option to get rid of the gravity vector
• Switchable Hamming window for frequency analysis
• Frequency data plotted as Linear-Linear, Log-Log, Log-Linear and Linear-Log
• Computes rms and peak levels for each channel and for all three channels combined
• Document your results by taking screen snapshots and syncing them to your computer or sending a CSV formatted email with the time and frequency data to your computer or saving data locally and downloading the data with iTunes
• Turn on and off individual frequency plots
• Calibrate the internal accelerometers and examine and edit the calibration data
• Optional sounds to mark the start and stop of data acquisition
• Data inspectors and zoom
• Triggering off one or more accelerometer channels or microphone input.
• Frequency data averaging and peak hold.
Further development and additional features are planned. Please use the email links in the program to request new features and report any problems.
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In many applications Vibration can be an excellent portable alternative to a commercial spectrum analyzer. In predictive maintenance applications Vibration can help identify bearing defects, shaft misalignment, imbalance, and structural resonant frequencies. Vibration is also useful for monitoring the acceleration of part and material handling equipment.
The software is flexible and easy to use. It was written to emulate the familiar oscilloscope based spectrum analyzer. Sample rate and sample delay are easily adjustable and the user can select the length of the data acquisition and the vertical scale used for the display. Once the settings are configured simply press the sample button on the device or on your Apple Watch. When a test is complete the resulting data can be emailed to your desktop computer for documentation purposes.
Features:
• Sample the built in accelerometer or gyroscope, the internal Microphone or the professional Digiducer USB products including the 333D01, 333D04, 633A01 and 435B39. Additional Digiducer accelerometer features can be enabled via in-app purchase.
• Adjustable sample rate from 10Hz to 100Hz for the internal sensors and 1 kHz to 48 kHz for the internal microphone and the Digiducer accelerometer (with in-app purchase)
• Trigger sampling and review settings using the Apple Watch companion app.
• Auto repeat and auto save allow data to be taken over extremely long periods of time.
• Selectable data length from 256 to 4096 samples
• Variable start delay from 0 to 20 seconds
• Adjustable vertical scale for time series data
• DC Remove option to get rid of the gravity vector
• Switchable Hamming window for frequency analysis
• Frequency data plotted as Linear-Linear, Log-Log, Log-Linear and Linear-Log
• Computes rms and peak levels for each channel and for all three channels combined
• Document your results by taking screen snapshots and syncing them to your computer or sending a CSV formatted email with the time and frequency data to your computer or saving data locally and downloading the data with iTunes
• Turn on and off individual frequency plots
• Calibrate the internal accelerometers and examine and edit the calibration data
• Optional sounds to mark the start and stop of data acquisition
• Data inspectors and zoom
• Triggering off one or more accelerometer channels or microphone input.
• Frequency data averaging and peak hold.
Further development and additional features are planned. Please use the email links in the program to request new features and report any problems.
In-Apps
- Enable full Digiducer functionality
- £14.99
Screenshots
User Rating
4.67 out of 5
3 ratings in United Kingdom
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Ratings History
Reviews
slightly disappointed by the update
Whilst it is 'technically accurate' I found the claim that "It is now possible to select an external microphone as a data source" rather misleading. In fact, it appears that the in-App purchase [at a cost of £14.99] serves to only "Enable full Digiducer functionality". The Digiducer itself is an excellent, but not inexpensive device, and I would have been MUCH happier if the option was available to use ANY external USB microphone for qualitative work. That said; the App remains excellent !! . . Note: I have already twice attempted to submit this review, but neither has appeared ... Perhaps that was because I included links to the Digiducer website. [?]
Needs longer sample size
I want to use this to measure vibration of car suspension. Current samples way too short. Please extend.
Stealthworkx
Yes a very good app to balance quadcopter motors and props. Even motors straight out of the box won't be balanced as good as you can get if you use this app.
Excellent
Have used this app to assist with vibration dampening on a RC Quadcopter carrying video equipment. Prior to testing the individual arms of the model I was getting a fair amount of vibration with the video footage. Using the Iphone and this app I have been able to balance the motors very precisely resulting in exceptionally smooth video. The money I have spent on camera gimbals etc has been a fortune, this App would have saved a fortune as it as highlighted some major imbalances in the motors which no gimble could have dampened. Wish I had discovered this earlier, now have two multicopter platforms producing very smooth raw footage. Actually works am very pleased with results
Outstanding
As a software engineer myself for some 30 year I can apreciate a well designed app and the amount of work required to produce something as outstanding as this! If you have a requirement for this app it is worth more then 10 times it's asking price. Well done, nice to see an app that transforms the iPhone in to an engineering tool.
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App Info
- Category
- Utilities
- Publisher
- Bruce Truax
- Languages
- English
- Recent version
- 4.11 (7 months ago )
- Released on
- Jan 12, 2009 (15 years ago )
- Also available in
- United States, Australia, Canada, United Kingdom, Germany, France, Sweden, Brazil, Switzerland, Italy, China, Thailand, Greece, Spain, Russia, New Zealand, Japan, South Korea, Netherlands, Mexico, South Africa, Czechia, Colombia, Peru, Nigeria, Vietnam, Norway, Ukraine, Taiwan, Turkey, India, Philippines, Pakistan, Poland, Portugal, Singapore, Saudi Arabia, Romania, Egypt, Argentina, Austria, Azerbaijan, Belgium, Belarus, Chile, Denmark, Dominican Republic, Algeria, Ecuador, Malaysia, Finland, Hong Kong, Hungary, Indonesia, Ireland, Israel, United Arab Emirates, Kuwait, Kazakhstan, Lebanon
- Last updated
- 1 month ago