Yeah sorry about that Eric, I typed about half of it in thinking he was asking about my last post, then realised he was specifically asking you something not asking me. So I thought "Bugger! It's almost answered now" and just typed a bit more and hit send.

 

Hi Roman,
Thats not a problem.

I was going to post a section of one of my old Z80 programs showing the technique.
I was in marine surveying equipment design/manufacture for years, which I believe you were.?
As you know surveying covers many aspects of measurement with respect to time.

__________________
Eric " Good enough is Perfect "
I will NOT answer PM's requesting technical help, please use the Forum
PIC tutorials: Nigel's www.winpicprog.co.uk/ Bill's: www.blueroomelectronics.com/

 

No I've never worked in marine surveying, that sounds like fun! I do have some innovative underwater ROV designs but given my current busy schedule and my level of lazyness they will probably never get built.

 

Out of curiosity, can you tell more about, Eric?

I went at sea for long time and in my early years I was involved in hydrographic surveys mostly in the Paraná river or Antarctica.

I still recall an echosounder used to profile the bottom. It was a quite expensieve piece of equipment!. But nothing replaces the fun of crossing the river alone, with the Zodiac full ahead after leaving the geologist team on the other margin Nobody disputed the use of the boat to me (because it had the bad habit to deinflate, increasing the tendency of the bow to enter the water abruptly at any moment)

After quiting vessels I had the chance to be in close contact with some of the "piercing waves" ferries crossing from Buenos Aires to Montevideo sailing at about 55 knots. LOT of electronics!

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Agustín Tomás
In theory, there is no difference between theory and practice. In practice, however, there is.

 

hi,
I ran my own small company for the last 25 years of my working life. E.S.P.(Electronics)Ltd. based in Portsmouth.
We designed and manufactured Laser Range finders, Laser profiler and bearing units, Data loggers, Depth digitisers, Digital Echosounders, Tide gauges, Chart Annotators and a host of other interfaces as well as surveying and plotting software.
In the UK we sold our products directly to clients and overseas thru agents

Client base was mainly harbour and river authorities, dredging and surveying companies.

Is this the information that you are asking for.?

__________________
Eric " Good enough is Perfect "
I will NOT answer PM's requesting technical help, please use the Forum
PIC tutorials: Nigel's www.winpicprog.co.uk/ Bill's: www.blueroomelectronics.com/

 

Hola Eric,

High tech stuff it seems to be. Good.

In my next life, if such a thing ex¡sts, I will be doing something like that.

I can imagine you enjoyed your job.

__________________
Agustín Tomás
In theory, there is no difference between theory and practice. In practice, however, there is.