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From: exujet@exu.ericsson.se (Jerry Ethridge)
Subject: Re: Info on Inertial sensors
Message-ID: <1994Oct10.190045.17215@exu.ericsson.se>
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References: <37b0su$5qh@alpha.cisi.unige.it>
Date: Mon, 10 Oct 1994 19:00:45 GMT
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In article 5qh@alpha.cisi.unige.it, nautilus@iuno.lira.dist.unige.it (Capurro - Panerai) writes:
>
>G'day,
>
>	could anyone help me in finding references to inertial sensors
>	for mobile robots (e.g. gyroscopes, gyrometers, linear accelerometers) ?
>	I will be very gratefull for info
>	such as names and fax of companies producing these sensors.
>	
>
>I will put all the information gathered available if it will be
>of large interest.
>
>Thank you 
>


Here is some info on accelerometers...

Jerry

------------------------ Include -------------------------------------

Analog Devices ADXL50 accelerometer.

Power Supply........................... +5V (+/- 5%)
Measurement Range...................... +/- 50g
Pre-Amp Zero-g output level............ +1.8V
Pre-Amp output span.................... +1.8V (+/-1.2V) at +/-50g
Uncommitted amp output range........... +0.25V to +4.75V
Overall Accuracy....................... 5% of Full Scale
Linearity.............................. 0.5% of Full Scale
Bandwidth.............................. DC to 1kHz
Voltage Noise (p-p)
    at BW = 0.3kHz..................... +/-0.24% of Full Scale
    at BW = 1.0kHz..................... +/-0.48% of Full Scale
Transverse Sensitivity................. 2%
Unpowered Shock Survival............... 2000g

I've found several Distributors:

Newark Electronics..................... 1-800-281-4320
Hamilton-Hallmark...................... 1-800-332-8638
Active Electronics..................... 1-800-677-8899

*******************************

Silicon Designs, Inc.

       - Capacitive Accelerometers

Model 1010, Digital output:

    Produces Digital pulse train in which the density of pulses
(number of pulses a second) is proprtional to applied acceleration.
It operates with a single +5 volt power supply and requires a clock
of 100kHz - 1MHz. The output is ratiometric to the clock frequency
and independent of the power supply voltage. Two forms of digital
signals are provided for direct interfacing to a microprocessor or
counter.

This devices comes in a PLCC package that is smaller than a penny.

Model 1210, Analog output:

    Privides two analog outputs, 1-4 volts, or 4-1 volt, with O g's
at 2.5 volts. The outputs can be used either differentially or single
ended referenced to 2.5 volts. Two reference voltages--+5.0 and +2.5
volts (nominal)-- are required; the output scale factor is ratiometric
to the +5 volt reference voltage.

Address:

Silicon Designs, Inc.
1445-NW Mall Street
Issaquah, WA. 98027-5344
Tel: (206) 391-8329
Fax: (206) 391-0446

Prices start at about $100 and they offer a digital accelerometer
evaluation board for $200.

***********************************

Silicon Microstructures, Inc.

Model 7170 series and 7130 series capacitive accelerometers.

These are relatively large devices with built in ASIC signal
processing.They have very good accuracy specs and are pre-calibrated.
I have not contacted them personally but they will send you some
brochures on all of their devices. They also make pressure sensors.

Address:

Silicon Micostructures, Inc.
46725 Fremont Boulevard
Fremont CA. 94538
Tel: (510) 490-5010
Fax: (510) 490-1119



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Jerry Ethridge		     Richardson, Tx.                 |
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