Announcement

Collapse
No announcement yet.

accelerometers

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

  • accelerometers

    Some time ago I queried about very small accelerometers. In addition to the
    companies mentioned in the following list of responses, I have also dealt
    with AMP Sensors (610)666-3500, which makes a sensor that measures
    accelerations in the Y or Z axis or rotation about the Y axis. Thank you
    to everyone who responded to my request!

    Sincerely,
    Marlene Martinez

    Date: Tue, 28 Jun 1994 11:38:08 -0700
    From: sabelman@roses.Stanford.EDU (Eric Sabelman)
    Subject: accelerometers


    We at the Palo Alto VA Rehab R&D Center have been using accelerometers for human
    body motion analysis. We assemble 3-axis sensors from single axis surface-mount
    devices made by IC Sensors in Milpitas, which were the smallest low cost
    off-the-shelf packages we could find (model 3031, 0.3 inch square x 0.14 high =
    200 cu mm). The silicon chips themselves are about 3 mm on a side.

    Greg Kovacs at Stanford's Center for Integrated Systems is developing some
    multi-axis chips; you could ask him if any are available for trial
    (kovacs@glacier.stanford.edu).

    -Eric Sabelman, section chief, Human/Machine Integration Section, VA RR&D Center



    Via: uk.ac.swansea; Tue, 28 Jun 1994 19:35:00 +0100
    From: Pierre Hubsch
    Date: Tue, 28 Jun 94 19:40:01 BST
    Subject: Re: accelerometers


    Hi Marlene,
    Kulite has a range of miniature accelerometers in their program; they boast
    that they are the smalles devices available but I'm afreide they are still
    bigger than 5 cubic mm.
    Their address is: KULITE SEMICONDUCTOR PRODUCTS, INC
    One Willow Tree Road
    Leonia, New Jersey 07605
    tel.: 201 461-0900
    fax.: 201 461-0990
    So long,
    Pierre



    Date: Tue, 28 Jun 1994 22:36:38 -0400 (EDT)
    From: "Ben F. Willems"
    Subject: Re: accelerometers
    Content-type: TEXT/PLAIN; CHARSET=US-ASCII
    Content-transfer-encoding: 7BIT


    Dear Marlene:

    I will also check in my office tomorrow (I have quite some info on
    accelerometers there), I think PCB electronics maybe a good bet. Will let you
    know later. 5 cubic mm is very small, though! You do mean a cube with sides
    of 1.7 mm, right? Just checking. I will get back to you tomorrow.

    Ben F. Willems
    Hospital for Joint Diseases
    Occupational and Industrial Orthopaedic Center
    63 Downing Street
    New York, NY 10014
    U.S. of A.
    Phone: (212) 255 6690 ext. 120
    Fax: (212) 255 6754
    Bitnet bitnet%"willemsb@nyuacf"
    Internet in%"willemsb@acf.nyu.edu"
    Compuserve 72344,3551 or in%"72344.3551@compuserve.com"



    From: Rob Neal
    Date: Wed, 29 Jun 1994 09:01:52 EST5EDT
    Subject: Re: accelerometers
    Priority: normal
    X-mailer: WinPMail v0.99 (WRB2).

    Marlene,

    You wrote ...

    > Dear BIOMCH-Lers,
    >
    > Does anyone know where I can find triaxial accelerometers that are
    very
    > small (less than 5 cubic mm) and lightweight? I will gladly
    summarize
    > responses. Thank you!
    >
    >
    > Marlene Martinez
    > Dept. of Integrative Biology
    > Univ. of Calif. Berkeley
    > (510)643-9048
    > marlenem@garnet.berkeley.edu

    Kistler of course sell triaxial accelerometers and are available
    locally. Another company (in fact started by the guy who developed
    Kistler) sell a range of products including triaxial accelerometers. If
    you want details I will dig them up.

    Rob

    Robert Neal, PhD
    Department of Human Movement Studies
    The University of Queensland
    QLD, AUSTRALIA

    ph 61 7 365 6240
    FAX 61 7 365 6877
    EMAIL NEAL@HMS01.HMS.UQ.OZ.AU



    Date: 29 Jun 94 16:04:12 EDT
    From: Bob Redd
    To: "INTERNET:marlenem@GARNET.BERKELEY.EDU"
    Subject: accelerometers


    Dear Marlene:

    Unfortunately, a 5mm cubic sensor would be approximately 1.25mm x 1.25mm x
    1.25mm. This is extremely small. We do however make a sensor which is one
    (1) cubic centimeter (10mm x 10mm x 10mm). The 3-axis sensor is our model
    #8694.

    If you need information on it, let me know.

    Regards,

    Bob Redd
    Biomechanics Product Manager
    Kistler Instrument Corporation
    1-800-7745-7484



    From: carlijn@wfw.wtb.tue.nl
    Subject: accelerometers
    To: marlenem@garnet.berkeley.edu
    Date: Thu, 30 Jun 94 9:46:11 MDT
    Cc: carlijn@wfw.wtb.tue.nl (Carlijn Bouten)
    X-Mailer: ELM [version 2.3 PL11]
    Status: RO
    X-Status:



    Dear Marlene,

    We use uniaxial piezoresistive accelerometers from ICSensors (Type
    3031-010, size: 4x4x3 mm, weight: 0.3 gram, frequency response: 0-
    600 Hz, range 10 g) for the measurement of accelerations during
    human movement. We placed three uniaxial sensors at right angles
    in a lightweight cube (7x7x7 mm) to obtain a triaxial accelero-
    meter. The price of a uniaxial accelerometer is about $60,-.


    Carlijn Bouten
    Eindhoven University of Technology
    Faculty of Mechanical Engineering
    The Netherlands
    e-mail:carlijn@wfw.wtb.tue.nl





    Date: Thu, 30 Jun 1994 14:59:53 -0400 (EDT)
    From: "Ben F. Willems"
    Subject: Re: accelerometers
    Content-type: TEXT/PLAIN; CHARSET=US-ASCII
    Content-transfer-encoding: 7BIT


    Hi Marlene:

    My memory chips got messed up. It was not PC, but ENDEVCO. I'll give you both
    addresses:

    Endevco Corporation
    30700 Rancho Viejo Road
    San Juan Capistrano, CA 92675
    (714) 493 8181

    They have model 23, that has a side length of 6 mm and is a triaxial
    accelerometer.

    PCB Piezotronix, Inc.
    3425 Walden Avenue
    Depew, NY 14043-2495
    (716 684 0001

    They have subminiature accelerometers of about 5 mm, but they need to
    be mounted on a triaxial connecter element.

    Another company is Entran Devices, Inc
    10 Washington Ave.
    Fairfield, N.J. 07004 USA
    1 800 635 0650

    They have some small accelerometers, that are quite low profile, but a
    bit larger in width.

    Please let me know if you are able to find anything below 5 mm, will you?

    Thanks in advance, talk to you later!

    Ben F. Willems
    Hospital for Joint Diseases
    Occupational and Industrial Orthopaedic Center
    63 Downing Street
    New York, NY 10014
    U.S. of A.
    Phone: (212) 255 6690 ext. 120
    Fax: (212) 255 6754
    Bitnet bitnet%"willemsb@nyuacf"
    Internet in%"willemsb@acf.nyu.edu"
    Compuserve 72344,3551 or in%"72344.3551@compuserve.com"




    Date: Fri, 01 Jul 94 10:38:22 TUR
    From: Ozan Akkus
    Subject: Re: accelerometers


    The smallest triaxial accelerometer that I have seen exists in the
    products catalogue of Bruel & Kjaer company (in Denmark).The one that may
    be suitable for your purpose has the following specification.
    B&K 4326 (Miniature Triaxial Accelerometer)
    Charge: 0.3pc/m/s2
    Sensitivity :
    Voltage: 0.3mV/m/s2
    Frequency Range: 0.1-13000 Hz
    Mounted Resonance: 40KHz
    Weight : 10gr

    The only other available accelerometer is gigantic for your application;
    it is 55gr.
    I hope this may help you in the issue.
Working...
X