Greetings,
I am currently working on an application which is aimed at measuring and storing maximum rotation speeds of the device attached to an object (in rotation).
Unfortunately I think I have finally come across a problem - my software recalculates gyro values (angular velocity) into rotational speed (in cycles per minute) - unfortunately my Samsung Note II reaches only 167-168 rot/min.
Can somebody advise where I can find the max value of measurements that such "budget" gyro is able to reach?
Do you know of any method to extend that value?
Kind regards,
Mariusz.
I have seen specs on them at 30rad/s, or 286rev/min. I don't know how much they differ, but that seems like far more than you normally need for a phone. Even though you're getting less than this spec, I wouldn't necessarily expect more than that. Make sure you're not limiting the value somewhere else in your code.
If you're only measuring rotation on a single axis, one trick you could use would be to attach a gear system between the object and tablet so that rotations are reduced by a certain ratio. See here for details: http://en.wikipedia.org/wiki/Gear_ratio
Then if your reduction ratio was 1:2, you could max out at 334-336 rotations per minute by multiplying the tablet output by 2. A ratio of 1:5 would be a max of 835-840 rpm. Using the tablet's fastest sampling rate (typically
I finally manager to sum up the system we have created for measuring the rotational speed of an object. Some initial assumptions:
1. The system must be mobile - in order to achieve this we combined our proprietary sensor with a smartphone.
2. The application is used for recording and evaluating received values of the rotational speed.
3. The application selects the maximum value form 2 second time window which is used for data aggregation.
Unfortunately we have not been able to produce proper results on built-in android sensors. We needed to develop a dedicated sensor solution which have than been integrated through Bluetooth with a smartphone.
I will attach some dev specs to show how.