×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

how to generate random accelerometer signal in SIMULINK?

how to generate random accelerometer signal in SIMULINK?

how to generate random accelerometer signal in SIMULINK?

(OP)
Hello,

This is Julia and I am new to SIMULINK.

Can I ask if anyone know how to generate random accelerometer signal in SIMULINK?

I need to use the generated signal for human movement recognition algorithm test purpose.

Thanks in advance!

RE: how to generate random accelerometer signal in SIMULINK?

Is there anything special about the accelerometer signal? Or is random, random? If so, just look in the Sources library: White Noise, Random Number, Signal Generator can all give you a random signal, for various definitions of random.

If by "random", you don't mean mathematically random and instead mean an arbitrary human movement acceleration signal, then there might be a bit more work to do. In that case, the Band-Limited White Noise might still do the trick, or you might even plug the Random Number into an Integrator or two to get a smoothed random signal.

If even that is too unrealistic, perhaps a number of Signal Generators set to sine function into a Sum block might do the trick?

Anything there close to the mark?

RE: how to generate random accelerometer signal in SIMULINK?

(OP)
Dear "LiteYear",

Thank you very much for the reply! And my "random" means an arbitary human movement acceleration signal (x, y, z axes).
My project is to develop a software system which detect elderly fall and distinguish normal activities (walking, stand up, sit down, fall).

I need to implement by simulation: Get activity acceleration signals in xyz axes and use those signals in the fall detection algorithm. As there is no hardware included, I guess I need to generate my own random acceleration signal.
According to your suggested ways, I guess I will try to get 3 siganl generators (sine wave function) and sum them together to create my acceleration signal.
Regarding Band-Limited White Noise, I will look into it too!

I don't know whether I ask too much, regarding human movement model (walking, standing up, sitting down, falling), any idea how can I get the equations of the model? Any references that can reconmmend to me?

Thanks!

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close