Following are some of the basic questions I am facing while designing a tilt measurement unit.
Answers to these shall be highly appreciated.
Q1: What is the relation between various sensitivity units?
I have come across many units for defining accelerometer sensitivity.
Till now the best unit I can cope up with is mg/LSB as I can see the fixed minimum constant acceleration the chip can distinguish across any of its sensing axis.
Q2: Which Analog chip will be much suitable for following specifications?
- Angular measurement range:
Option 1: +/- 180 deg
Option 2: +/- 90 deg
- No. of axes: 2
- Angle measurement accuracy: 0.01 deg
- Output type: Digital (preferably)
- Operating voltage range: Not finalised yet
- Operating temperature range 0 degC to 80 degC
Q3. What is the correlation between accelerometer accuracy & sensitivity?
Suppose certain accelerometer is offering 0.1 mg/LSB sensitivity over +/- 2 g in every axis.
How to improve the measurement angle range for an accuracy of 0.01 deg?