Question

Issue:-

1. I am developing a application which
   needs a new acceleration datum every 5
   millisecond.

My Approach:-

1. I have created a remote service
   which only reads the acceleration
   data from SensorManager.
2. I had also set the read rate to
   “DELAY FASTEST” while initialize the
   SensorManager.
3. Then i use IPC to communicate too my
   main application to get these
   reading.

Problem:-

1. If i put a log inside
   onSensorChange() event i receive a
   new sensor data every 20 ms time. But i need data every 5 ms.

Question ?

1. Is there any better method to read
   the senor data faster.

2. Is there any way i can poll the
   senor data rather that waiting for
   the event handler to trigger the
   event?

Please help me to find a better solution to read the data in 5 ms time or poll the acceleration data.

Answer 1

As I understand it, the accelerometer is very noisy and not suitable for fast operations. See the GoogleTech talk on sensor fusion at http://www.youtube.com/watch?v=C7JQ7Rpwn2k for a more authorative explanation and what you can do about it. Short explanation: Use the gyro for high speed events and the acceleromenter to correct the drift.