How to choose the acceleration sensor

Acceleration sensors in the choice of the time is a certain range of choices , you need to choose through a variety of aspects , the following specific brief .
Analog output vs digital output : This is the first to be considered , depending on the system and the interface between the acceleration sensor . General analog voltage output proportional to acceleration , such as 2.5V corresponding to the acceleration 0g , 2.6V corresponding to the acceleration of 0.5g . General use of digital output pulse width modulation (PWM) signal.If you are only using microcontroller digital inputs, such as BASICStamp, then you can select the digital output of Camshaft Position Sensor  , but the problem is that you must take one additional clock unit for handling the PWM signal , while the processor is a no small burden .Number of measuring axis :For most projects, the two -axis acceleration sensor has been able to meet most applications it. For some special applications, such as UAV, ROV controlled , three-axis acceleration sensor may be right for that.Maximum measured value :Bandwidth:Here the bandwidth actually refers to the refresh rate. That second , the sensor will generate many times reading. For general applications as long as the measured angle , 50HZ bandwidth should be sufficient, but for the need for dynamic performance , such avibration, you will need a HZ bandwidth with  Crankshaft Positioning Sensor .Sensitivity:Generally , the more sensitive the better. The more sensitive the sensor within a certain range of the acceleration change is more sensitive to changes in the output voltage is greater , so that relatively easy to measure , to obtain more accurate measurements. Sensitivity is naturally the higher the better , but in fact the higher the sensitivity range to narrow : on the contrary , the sensitivity is low you can get a relatively wide range. So when the product selection is necessary from the sensor needs, blindly using precision sensors often means higher costs fatigue resistance is also an important factor piezoelectric accelerometer .