Recent content by Facelook

Thanks. By the way, given the continuous changing accelerations in the 3 axes at sea, does that mean many accelerometer applications may not work well at sea on a vessel? For example, detecting free fall or counting steps.

I tried to do that by using Fourier Transform to look at the frequency domain. Unfortunately, no significant signals are found above 1Hz (typical vessel engine is around 100rpm), most signals are found under 1Hz. It looks to me the accelerometer was unable to pick up the engine vibration.

Thanks. I suppose when the ship/vessel is moving at sea, it must accelerate and decelerate slightly and continually. I am trying to spot the difference between moving and stationary. Compare to a car moving on land, I can tell it is moving simply looking x, y and z accelerations going...

Hi, Does anyone has experience using accelerometer on a ship/vessel to detect whether the vessel is moving or stationary? The difficult part is that I took some samples at 6Hz and found that all X/Y/Z axes have accelerations going positive and negative. The pattern is exactly the same...

Hello, any idea how does it work at sea on a vessel? On land, it is relatively easy. But at sea, I found that all 3 axes (x, y and z) show positive and negative accelerations when the vessel is moving and even stationary at terminal.