On 18/04/11 16:33, Jason Stahls wrote:
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>>>> I came from a consumer background and am new to the industrial world.
>>>> We're building a web enabled wireless control/monitoring unit based on
>>>> ts7800. To me, GPRS/3G is the only viable way of doing this. However,
>>>> it's a bit of challenge to keep the link stable.
>>>> I'd like to ask you if there re any other options at all in an
>>>> industrial environment?
>>> There's _tons_ of industrial RF products out there. What exactly are
>>> you doing?
>>>
>>> Unless you're in a remote area that you can't do a point-to-point link
>>> with 3G is probably not the best idea. The cell network is basically
>>> like using UDP/IP for everything, there's no guarantee anything will go
>>> anywhere, nor when it will get there if it does go.
>>>
>> Thanks for the reply. I'm building a box that'll allow the user to
>> remotely control a water quality analyser, through a web interface. Most
>> of our application would have wired LAN access but there are cases where
>> the machine is in a remote area. So basically the device will have to
>> have TCP/IP wirelessly ( or I'm on a completely wrong direction ). Again
>> I'm not used to industrial standard, etc. So if there is a remote
>> wireless TCP/IP solution, I'm all ears.
> If it's a short hop (1-2km) I'd just use 802.11. You could go as cheap
> as a couple consumer routers that support WDS or allow for the wireless
> to work in client mode to industrial grade stuff by people like Westermo
> and Pheonix.
>
> Another approach would be to still use a wireless router/access point
> but to add wireless to the TS product you're using. You can open up the
> USB wifi dongle, cut it's antenna, and solder on a pigtail for a
> external antenna.
>
> If you go the 802.11 route you'll want to use external directional
> antenna, be it yagi or dish (depending on the gain you need).
>
Can 802.11 go as far as 1-2km? How many routers is needed for that or
does one have to buy an expensive industrial grade router?
We're also looking at bluetooth/zigbee for connection between the
machine and TS7800 and keep TS7800 on a wired connection. Anybody done
this before?
> - --
> Jason Stahls
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