Help: Accelerometers for Car Navigation and Anomalous Detection

[Johnson L]

I need to pick up accelerometers for the following applications:

1) For car navigation together with GPS;

2) To detect the anomalous status of the vehicle movement. For example,
sudden slip toward one side.

Could anybody recommend some accelerometers? How is the performance of
3-axis MEMS accelerometers from Analog Device?

[Eric Jacobsen]

On Tue, 7 Apr 2009 21:40:29 -0600, "Johnson L" <[email protected]>
wrote:

>I need to pick up accelerometers for the following applications:
>
>1) For car navigation together with GPS;
>
>2) To detect the anomalous status of the vehicle movement. For example,
>sudden slip toward one side.
>
>Could anybody recommend some accelerometers? How is the performance of
>3-axis MEMS accelerometers from Analog Device?

They're everywhere. The accelerometers in the iTouch and iPhone are
good enough to give reasonably accurate estimation of hp by putting
one on the dashboard of a car.

Eric Jacobsen
Minister of Algorithms
Abineau Communications
http://www.ericjacobsen.org

Blog: http://www.dsprelated.com/blogs-1/hf/Eric_Jacobsen.php

[Vladimir Vassilevsky]

"Johnson L" <[email protected]> wrote in message
news:[email protected]...
> I need to pick up accelerometers for the following applications:
>
> 1) For car navigation together with GPS;

MEMS won't work. For navigation, the accuracy should be better by several
orders.

> 2) To detect the anomalous status of the vehicle movement. For example,
> sudden slip toward one side.

This is much simpler. Any sensor would do; check ADI, ST, FreeScale, VTI,
Honeywell.

> Could anybody recommend some accelerometers? How is the performance of
> 3-axis MEMS accelerometers from Analog Device?

MEMS from AD suck. The most accurate MEMS accelerometers are made by VTI
Hamlin.

Vladimir Vassilevsky
DSP and Mixed Signal Consultant
www.abvolt.com