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Re: well the discussion has been a bit overwhelming!!!!

From:
Date: Sun, 3 Oct 1999 20:50:20 -0400

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I know of a particular installation that used bare bones wearables (low speed
cpu, os in rom, hmd, wireless network) for each mechanic and then used local
(3-500 feet away) nt servers running citrix connected to a wireless network
node.  a cd-rom farm was hooked up to the nt servers and the manual information
was sent over the wireless network.  in addition to the manuals, the nt server
allowed access to expert diagnostic systems as well as allowed communicatiosn
with other mechanics (for instance, to ask the expert working in the other
wing).  despite the fact that the manuals were highly graphical, it worked fine
from a bandwidth point of view.  it meant that the wearables could be cheap,
light and long lasting, each mechanic could access tons of info and even
collaborate using workflow tools, and the total cost was quite low because all
of the heavy duty hardware was in the low cost nt boxes.

if you like unix, an x-windows version works even better because it was meant
for this type of thing.

since the mechanics all tend to work in only a few geographic areas, all you
need is a wireless network node in each hangar.  real roi.

ASK

Shajee Rafi <>
10/01/99 01:43 PM GMT

To:   Wearables UK <>, Wearables Hardware
      <>
cc:    (bcc: Allan S. Kyle)
Subject:  well the discussion has been a bit overwhelming!!!!

well thanks a lot chaps, i just got interested in wearables a wee bit back and i
dare say i learnt more in two days i have been a subscriber to this list, than i
did in the last two weeks.

i am not a computer wizzard as i do think lot of you chaps are, i do know a
little of my electronics and computers but what i do know is that i want a
wearable. well i am an aircraft maintenance engineer and work with an
international airline in the united arab emirates. we have loads and loads of
manuals for aircraft fault isolation and trouble shooting and incidently when
you start talking about three or four different types of aircrafts then the
reference and fault isolation procedures and data starts to run in thousands and
thousands of pages. so while talking with a boeing representative at a
conference i came to know that they were using wearables for aircraft avionics
wiring harness installations. now if i could carry all that data along with me
on a wearable, nothing flashy something that carries the books for me, so to
speak, i could do my job better and repetitive case sensitive revision of
material on a daily basis would enhance my system understanding as most of the
data is a couple of clicks away.

now the problem is that i hear you chaps talk about how foul windows smells and
unix is the wings with which you fly to the proverbial wearable heaven, but all
the aircraft manuals at my disposal run in a windows environment. it is about 3
cdroms for one aircraft for basic manuals, and we have three types so i need
storage space for 8 or 9 cdroms. now as incorporation of a cdrom drive would
complicate matters so it has to be on a hard disk inside my wearable. i could
put two of them if the need arose.

so now, i am looking for a wearable to build but i have a couple of questions,
and i thought i might as well pitch them to the pros. i have assembled a couple
of desktops and i know how they work. now a desktop has a motherboard and it had
card slots for different busses, PCI and ISA for common systems. now when you
come to a pc104 or a pc104+ type of a system you have a couple of cards that fit
together to make a system. now i suppose a cpu pc104 card would have all you
need to get a processor talking, now you would need an I/O card to talk to that
processor and hear it talk, that makes two cards. now when i say I/O card that i
suppose would mean a card with serial and parallel ports, maybe USB ports, now
to drive a display output i am interested in a HMD, i would need a SVGA display
adapter card, now as i understand it, some HMD need an NTSC signal to operate so
SVGA to NTSC and vice versa conversion is required as well, would that be a
seperate card? then comes the HDD issue, toshiba makes a 2.5 in. footprint
drive, 3 GB is it? so put two of them in a master slave config and i'm in the
green. but to hook it up i need another card which has IDE connection capability
or would the CPU card have it? now as i want to be able to read text and view
schematics and diagrams those are the capabilities i desire in the HMD, besides
being light in weight and easy to carry around. and the input to the wearable
would be as i understand, through a twiddler. well voice recognition is a
wonderful alternative but i would have to write a program to interface with the
manuals and my work environs being a high noise area does add to the complexity
of the system. noise cancelling microphone and other such gadgetry. voice input
is a good future project once i have a working system. i work in 12 hour shifts
so i would require some sort of a power pack that runs my wearable for atleast 9
hours.

now you chaps, do know what i intend to build and for which purposes, it would
be a great help if you could explain how a wearable should be put together, what
would a normal pc104 based system have in terms of cards, power supply and HMD
or just point me in the right direction. would anyone have an idea how much such
a system would cost?

well i do know that i might get flamed for asking such basic questions but we
all need to start some where, might as well among people who know which way is
north!!!!!

shajee out.

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