Accelerometer selection for vibration analysis

[Ankur Shanker]

Posted on May 05, 2018 at 08:01

Hello, we are building an application for condition monitoring of machines. For this, I am trying to figure out the appropriate accelerometer with the following specs: (1) a frequency response of 1.5 to 2 kHz, (2) a high ODR, higher the better, (3) an analog anti-aliasing filter, and (4) a resolution of at least 14 bits. After looking at different accelerometers, I have zeroed-in on LSM303AH and ISM330DLC (we'll be utilizing only the acc sensor). Can you please suggest which among the two should be preferred over the other (for this particular application)? Or, if these are not the appropriate ones, could you please suggest other options.

Regards,

Ankur

#accelerometer #vibration

[Miroslav BATEK]

Posted on May 06, 2018 at 14:22

I would suggest to use ISM330DLC because it has 4kB and works from 1.71V to 3.6V.

The LSM303AH has only 256-lvele FIFO and works only at 1.8V.

[Ankur Shanker]

Posted on May 07, 2018 at 16:48

Thanks Miroslav for your suggestion. Is it also possible for you to find

out what kind of anti-aliasing filter is implemented in ISM330DLC?

Best regards,

Ankur

On Sun, May 6, 2018 at 5:53 PM, Miroslav B <st-microelectronics@jiveon.com>

[Miroslav BATEK]

Posted on May 09, 2018 at 08:31

Unfortunately, this kid of information cannot be shared on the forum.

[Ankur Shanker]

Posted on May 09, 2018 at 22:30

Sure Miroslav, I understand. Also, I was going through the data sheets of

ISM330DLC and LSM6DSL and they both seem to have mostly the exact same

specifications. Any idea what is the big/important difference(s) between

these two? Just want to ensure that we select the appropriate sensor for

our application.

Best regards,

Ankur

On Wed, May 9, 2018 at 12:02 PM, Miroslav B <st-microelectronics@jiveon.com>

[Miroslav BATEK]

Posted on May 10, 2018 at 09:49

The ISM330DLC and LSM6DSL are very similar.

The ISM330DLC is intended for industrial applications, it doesn't have Pedometer and Wrist tilt functionality. Several parameter are also guaranteed by min and max value. The ISM330DLC is part of the

http://www.st.com/content/st_com/en/support/resources/product-longevity.html

program.I think for your project the ISM330DLC is good choice.

[Ankur Shanker]

Posted on May 10, 2018 at 10:10

Thank you Miroslav!

On Thu, May 10, 2018 at 1:19 PM, Miroslav B <st-microelectronics@jiveon.com>