🚀 go-pugleaf

     I am starting a project that requires me to locate and
     track a device in 3-space.

     I am looking at using a 3-SPACE digitizer from Polhemus
     (also called ISOTRACK, Kaiser Aerospace) and am looking
     for any information on this system or perhaps similar
     systems from competing companies.

     This system has been used to monitor head position in a 
     virtual reality environment, and has been widely used to
     monitor hand/finger positioning in kinesiologic studies.

     The Polhemus system is made up a SOURCE and a SENSOR.
     The SOURCE is three orthogonal coils, energized to
     create a low frequency field. The SENSOR is also three
     orthogonal coils, and when placed within the field the
     electronics unit (80186-based) reports the position of
     the SENSOR with accuracy to about 2mm or so (as long as
     you remain within 30 inches of the source). The system
     is capable of reading at a rate of 60Hz.

     Has anyone any experience with this? Somethign similar?
     A better way to locate and track something in 3 dimen-
     sions? This system will run me over $10,000, so any and
     all responses greatly appreciated.

     					-=john

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john f andrews                SYSOP           The Biomedical Engineering BBS
    24 hrs             300/1200/2400/4800               (201) 596-5679
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INTERNET jfa0522@hertz.njit.edu                                CIS 73710,2600
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