Article View: comp.robotics
Article #457Re: Electronic Spirit Level
From: John Nagle
Date: Thu, 20 Aug 1992 00:27
Date: Thu, 20 Aug 1992 00:27
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rwmurphr@uokmax.ecn.uoknor.edu (Robert W Murphree) writes:
> The heart of the SMARTLEVEL, produced by Wedge Innovations
>in San Jose, California, is a device called a liquid-filled
>inclinometer. A sealed capsule contains two parallel conducting
>discs with a space, partially filled with iquid between them.
Available at Orchard Supply Hardware.
This is not a new idea; ETAK has built two-axis versions of
such devices, packaged with a rate gyro, for their vehicle navigation
system. These were supposed to be cheap (I paid about $125 a few years
ago) and of modest accuracy, but I doubt they still make them.
But the technology is cheap, although there are tricks to getting it to
work well during violent motion.
John Nagle
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Newsgroups: comp.robotics Path: arc1-ca.pugleaf.net!sparky!uunet!charon.amdahl.com!pacbell.com!mips!sdd.hp.com!decwrl!csus.edu!netcom.com!nagle From: nagle@netcom.com (John Nagle) Subject: Re: Electronic Spirit Level Message-ID: <89!n!aq.nagle@netcom.com> Date: Thu, 20 Aug 92 00:27:26 GMT Organization: Netcom - Online Communication Services (408 241-9760 guest) Keywords: inclination, balance, mobile robots References: <1992Aug19.210513.27247@constellation.ecn.uoknor.edu> Lines: 16