September 1, 2015

Vibration Meter (v1.6) manual

Hello. I'm chief developer of Smart tools co.,

Vibration Meter is in the 4th set of Smart Tools collection. It is using your acceleration sensor to measure vibrations or Earthquakes, and shows a reference.
The result is related to Modified Mercalli Intensity scale (MMI). The acceleration sensors are very unstable. Just use it as an auxiliary tool.

※ Introduction video

 Examples of MMI earthquake scale
  I : Instrumental. Felt by animals
  II : Weak. Felt indoors by a few people
  III : Slight. Felt indoors by several people
  IV : Moderate. Hanging objects swing
  V : Rather Strong. Some dishes broken
  VI : Strong. Heavy furniture moved
  VII : Very Strong. Difficult to stand
  VIII : Destructive. Fall of walls
  IX : Violent. Noticeable cracks in ground
  X : Intense. Almost destroyed
  XI : Extreme. Rails bent greatly
  XII : Cataclysmic. Total destruction

 ① Alarm sound on / off : you can specify the level at the settings
 ② Reset : otherwise you can tap the paper for sound effect reduction
 ③ Line-chart / Reference toggle

 ④ Brightness toggle : to save battery, make the screen dim.
 ⑤ Play / Pause


 How to calibrate

This app uses the acceleration sensor. But it is very unstable and weakened easily, so that calibration is required.

① Go calibrate menu.

② Shake your device as possible as you can. Increase / decrease its sensitivity so that max value reaches about 10-11.
③ Check your unnecessary values when there is no movement.
④ Click [Cut Baseline] button and select an number.

⑤ Repeat ②-④ several times.

Q. Can the app alert Earthquake?
A. Theoretically possible. Can you open the app all the time. Maybe, within 2-3 days, your device will be heated and the sensor will be damaged.

Q. Though my phone did not move, the app showed 2-3.
A. Most sensors show meaningless data. Please calibrate and cut off unnecessary value.

Q. How to save the data?
A. It is a free version. Get pro version. It can export CSV file for MS-Excel.

Q. What is the unit of vibration?
A. It has no unit, just the scale for reference.

 Pro version added features
 1) Sound meter is integrated
 2) Screen capture
 3) Statistic menu (chart saving, CSV exporting)
 4) No ads
 Get it on Google Play

 What's New?
 - v1.6 : Line-chart, Sound effect add
 - v1.5.9 : Galaxy Note8 support
 - v1.5.6 : Galaxy S8 support
 - v1.5.4 : Alarm on/off icon on appbar
 - v1.5.0 : Sound effect
 - v1.5 : Material design
 - v1.4 : Actionbar, alarm level added
 - v1.3 : 12+ languages support
 - v1.1 : Calibrate menu with cut baseline
 - v1.0 : Vibration Meter released (Nov, 2010)

If you have any idea to improve it, feel free to contact me.
Thank you.