No announcement yet.

request for advice about LABVIEW

This topic is closed.
  • Filter
  • Time
  • Show
Clear All
new posts

  • request for advice about LABVIEW

    We are looking for help from people who have used Labview to control
    experiments and collect data involving human (or other!) motion. Labview
    looks attractive, but we are unsure whether it can really handle our
    current or future real-time control and acquisition needs.

    Specifically, we are considering buying Labview to replace "in house"
    software for data acquisition and real-time control of experiments running
    off PCs (Intel Pentium processor). We collect up to 32 channels of analog
    signals collecting up to 1,000 Hz. We currently give subjects on-line
    feedback (via monitor) about the x-y coordinates of the center of pressure,
    computed from 2 force plates (12 channels) and sometimes concurrent
    feedback based on another analog source. Calculations involve multiplying
    several channels to a calibration matrix or taking the integral or
    derivative of several channels. Additionally, in the future we would like
    to do real-time control of external devices like torque motors,
    microprocessor, and relays based on several variables, again calculated
    from multiple input analog signals (e.g., PID control).


    1. If you use Labview to display visual COP feedback from 1 or 2 force
    plates, do you know the time delay (in ms) involved, especially that due to

    2. What kinds of real-time control of torque motors, etc have you used
    Labview for? With how many simultaneous A/D channel acquisition? what kind
    of on-line feedback? What if any limitations did you encounter, and with
    what version of Labview?

    3. Any comments, pro and con, would be very useful, as would suggestions
    for alternatives (we've looked at Tempo and Amlab; Labview has the lowest
    up-front cost, biggest company w/longest history, open architecture).

    We would like to make a decision soon and will especially appreciate rapid
    responses. As usual, we will post a summary.


    Fang Gao
    Programs in Physical Therapy
    Northwestern University Medical School
    645 N. Michigan Ave. Suite 1100
    Chicago, IL 60611
    Tel: (312) 908-6759
    Fax: (312) 908-0741