Thanks! Yeah the problem is im a chemical engineer doing research with very basic electronic engineering knowledge. I need a kick in the right direction. There is alot of stuff out there, i just need to figure out the right path. Current help and more is very much appreciated! Cheers! -- ---------------------------------------------- Posted with NewsLeecher v3.0 Final * Binary Usenet Leeching Made Easy * http://www.newsleecher.com/?usenet ----------------------------------------------
Re: ADC implementation on fpga? Information and procudures wanted.
Started by ●October 17, 2005
Reply by ●October 17, 20052005-10-17
On 17 Oct 2005 14:18:54 GMT, kd (pingboypulsar<spamoff>@hotmail.com) wrote:>Yeah the problem is im a chemical engineer doing research with very >basic electronic engineering knowledge. > >I need a kick in the right direction. There is alot of stuff out >there, i just need to figure out the right path. Current help and >more is very much appreciated!ouch... I have a nasty feeling that this is a bit the same as me asking you "please explain how I can build a plant to manufacture 10 tons of ammonia per week" - it's very well-established technology, very easy when you know how, but not something that you should try unless you have a clear idea of what you are doing :-) When I said "almost trivial", I meant "almost trivial for a reasonably well trained digital designer". I don't think it's a very productive use of your or our time to provide you with all the necessary background via Usenet. Get yourself a competent design contractor, watch what he/she does very closely, take their results and modify it as needed to suit your next project... it'll be a few thousand dollars well spent. If you're building industrial instrumentation, or planning to build it, then you have *some* budget surely? This post sounds a bit negative. Apologies... but I strongly suspect that you are a bit too far away from success just yet for Usenet to be your rescue. Please forgive me if I've misjudged. -- Jonathan Bromley, Consultant < oh, and speaking of competent contractors... > DOULOS - Developing Design Know-how VHDL, Verilog, SystemC, Perl, Tcl/Tk, Verification, Project Services Doulos Ltd. Church Hatch, 22 Market Place, Ringwood, BH24 1AW, UK Tel: +44 (0)1425 471223 mail:jonathan.bromley@doulos.com Fax: +44 (0)1425 471573 Web: http://www.doulos.com The contents of this message may contain personal views which are not the views of Doulos Ltd., unless specifically stated.
Reply by ●October 17, 20052005-10-17
> Get yourself a competent design contractor, watch what > he/she does very closely, take their results and modify > it as needed to suit your next project... it'll be a > few thousand dollars well spent. If you're building > industrial instrumentation, or planning to build it, > then you have *some* budget surely?If you are building industrial instrumentation, you might want to spend the money the next time as well. Electronic design (not just the FPGAs) has lots of ways to produce less than ideal results. Ground loops, proper power bypassing, signal integrity, and a list of other issues can give you a circuit that doesn't work, or even worse works most of the time.>< oh, and speaking of competent contractors... >Can I do that here as well? -- Phil Hays to reply solve: phil_hays at not(coldmail) dot com If not cold then hot
Reply by ●October 17, 20052005-10-17
On 17 Oct 2005 14:18:54 GMT, kd (pingboypulsar<spamoff>@hotmail.com) wrote:>Thanks! > >Yeah the problem is im a chemical engineer doing research with very >basic electronic engineering knowledge.You brought your question to the FPGA news group, and sure enough everyone is trying to help you on the issue of connecting ADCs to FPGAs. Let me try kicking you in a different direction, just in case it makes more sense :-)>I need a kick in the right direction. There is alot of stuff out >there, i just need to figure out the right path. Current help and >more is very much appreciated!Ok, here goes: Why are you trying to do this with an FPGA ??? In my experience, when people in other engineering/science fields of endeavor want to do data acq (ADC/DAC) it is usually part of some sort of experiment or process control. It is not the development of a new custom instrument. What you typically want to do is gather data from your sensors, and then process it to get to some result (maybe process control info, or maybe a graph in a powerpoint presentation, or maybe an Excel spread sheet). Your wrote:>Basically its for industrial sensors, like thermocouples, >0-10v, -5v-5v, 0-5v, 0-20ma, 4-20ma sensors.which screams out that this is where you are headed (but I could be wrong :-) If you are trying to build a custom, self contained ACQ system, then going out and buying chips (ADC, DAC, FPGA) may be the way you have to go. But, if the collected data is to processed on a "standard" PC, then you can save a huge amount of pain and suffering by just going out and buying a data acq board that plugs into your computer, or that connects to the computer over ethernet, or serial (rs232), or USB. Look at products from: National Instruments: http://www.ni.com/ Data Translation: http://www.datatranslation.com/ IO Tech: http://www.iotech.com/index.html Omega: http://www.omega.com/prodinfo/dataacquisition.html Measurement Computing: http://www.measurementcomputing.com/ Dataq Instruments: http://www.dataq.com Get started at $25 http://www.dataq.com/194.htm>Cheers!All the best, Philip Freidin Philip Freidin Fliptronics
Reply by ●October 21, 20052005-10-21
On Mon, 17 Oct 2005 22:37:09 GMT, Philip Freidin <philip@fliptronics.com> wrote:>Ok, here goes: Why are you trying to do this with an FPGA ???A very good question.>Look at products from: > >National Instruments: http://www.ni.com/ >Data Translation: http://www.datatranslation.com/ >IO Tech: http://www.iotech.com/index.html >Omega: http://www.omega.com/prodinfo/dataacquisition.html >Measurement Computing: http://www.measurementcomputing.com/ >Dataq Instruments: http://www.dataq.com > >Get started at $25 http://www.dataq.com/194.htmExcellent advice, probably the most important kick-start the OP received - unless he's doing something really unusual. Most of the usual industrial plant-control applications are well covered by standard hardware these days. -- Jonathan Bromley, Consultant DOULOS - Developing Design Know-how VHDL, Verilog, SystemC, Perl, Tcl/Tk, Verification, Project Services Doulos Ltd. Church Hatch, 22 Market Place, Ringwood, BH24 1AW, UK Tel: +44 (0)1425 471223 mail:jonathan.bromley@doulos.com Fax: +44 (0)1425 471573 Web: http://www.doulos.com The contents of this message may contain personal views which are not the views of Doulos Ltd., unless specifically stated.
