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Topic: ARDUINO + Ship automation (Read 16434 times) previous topic - next topic

wilfredmedlin

Not to mention intrinsic safety / flashproof-ness if the tank contents and or its fumes are dangerous.

Keep Calm and call 0118 999 88199 9119725...... 3

dave-in-nj

#16
Feb 09, 2018, 12:55 pm Last Edit: Feb 09, 2018, 12:59 pm by dave-in-nj
as you can see, a hobby device should never be used in a life-safety application. 
if you want to know a tank level,  simple.   the hard part is to get the appropriate sensor.    the EXACT same sensor as a Siemens PLC would use ?   

heat ?  we do it all the time.   we can even control to a higher resolution that a Siemens PLC,  IF we use better sensors.

pressure, same thing,  if we use better sensors, we can resolve higher accuracy, if we use the same sensors, maybe not.   we could use a 24bit ADC to their 16 bit....

alarm, we do all day long.  no problems there.  we can sound the same alarm as the Siemens.

as for the word 'ship' is that as in packaging ? or boat ?
for use on the high seas.  if your alarm fails in the middle of the pacific, you are not getting new parts till you reach the dock, don't care whose stuff you use.

[ I do not think the Edmund Fitzgerald used Arduinos ]

"CAN" it be used ?  I would not be surprised if you found a Siemens PLC that uses a Atmel328 chip, so the same model chip, but if you look at a LM317 'power supply' and your computer power supply, there are a LOT more bits in it.
the I/O cards on commercial stuff are one good step above hobby stuff.  look at any Honeywell alarm device.  but the Industrial stuff are 10 steps more robust, more secure, etc.

when you look at resistors, 100 for $1 and then others, similar resistors, 10 for $1 or $1 each,  you may wonder who buys that stuff ?   the guys who know that failure is not an option and design around it.

Yes, some do use hobby stuff for industrial applications,  there was a post on here about a guy using it for oil well drilling.  said the crew got pssed when it failed, lost hours each time it had to re-start the drill.  something about self tuning the drilling so it had to drill for a bit to get data to fine tune itself to drill faster....

if you want to piggy-back a data logger and send alerts out, that would be a good way to startt

wilfredmedlin

OP's not the one who brought up Siemens btw: that was soundfx in #1.

So comparison of Atmel to Siemens might by irrelevant.

Keep Calm and call 0118 999 88199 9119725...... 3

dave-in-nj

OP's not the one who brought up Siemens btw: that was soundfx in #1.

So comparison of Atmel to Siemens might by irrelevant.


yes and no.
the concept of a silicon chip as the heart, 
both can use the same basic part
final cost to customer, not the same.
the supporting circuitry is the key.
two resistors =  voltage reference for ADC by voltage dividers
precision voltage reference ?   not the same.
does it make any difference when watering your plants ?
as for the question if this thread jumped track onto legal protection when it might be for a coffee maker on a fishing trawler ?   dunno....

TomGeorge

Hi,

How big is the ship?
Fullscale, model? ? ? ? ?

Thanks.. Tom.. :)
Everything runs on smoke, let the smoke out, it stops running....

Robin2

So comparison of Atmel to Siemens might by irrelevant.
I believe the intended comparison was between a home-brew Arduino solution and a Siemens PLC - not between Atmel and Siemens.

And I have no doubt that other brands of PLC would be just as satisfactory as Siemens' products.

...R
Two or three hours spent thinking and reading documentation solves most programming problems.

wilfredmedlin

Nice photo, OP.... but why did you post it?

Do you want to replace that whole console with something run off an Arduino? (Looks like it says PCC- Pump Control Centre maybe?)

It's time you described exactly what you want to do. It's been fun kicking some thoughts around, but frankly it's just a waste of everyone's time.

Start by explaining exactly what this means:

Machine
Heat-Pressure-tank level.........
Alarm
Keep Calm and call 0118 999 88199 9119725...... 3

SteevyT

Why was Siemens the first PLC mentioned?

Why not Allen Bradley?
I might not know what I'm doing.

TomGeorge

#23
Feb 10, 2018, 07:35 am Last Edit: Feb 10, 2018, 07:42 am by TomGeorge
Why was Siemens the first PLC mentioned?

Why not Allen Bradley?
First comes to mind..... Siemens, Allen Bradley, Unitronics, IFM....
Allen Bradley same situation, high end safety oriented PLC systems.

Seimens used as an industrail PLC compared as example to Arduino, Pi, Banana, Propeller and others

Tom... :)
Everything runs on smoke, let the smoke out, it stops running....

Robin2

Maybe the OP is trying to make a simulator for playing at "skipper" while safely on dry land. An Arduino would be fine for that.

But it would be nice if he would take the trouble to tell us.

...R
Two or three hours spent thinking and reading documentation solves most programming problems.


Robin2

#26
Feb 11, 2018, 09:50 am Last Edit: Feb 11, 2018, 09:50 am by Robin2
@newguitar, you are just wasting everyone's time posting pictures without ever taking the trouble to respond to the many Replies you have received.

You have not even explained the purpose of the pictures.


...R
Two or three hours spent thinking and reading documentation solves most programming problems.

newguitar

#27
Feb 11, 2018, 10:12 am Last Edit: Feb 11, 2018, 10:25 am by newguitar
Heat-Pressure-The liquid level gives an alarm over the standard values.
The problem is checked on the screen.

Newguitar
Ship Machine Personnel
cnc micro control card programming specialist.
Autocad+Delph+C# software specialist.

wvmarle

If you have any questions, ask them.

If you want to showcase your projects, there's a separate section on this forum for that.
Quality of answers is related to the quality of questions. Good questions will get good answers. Useless answers are a sign of a poor question.

Robin2

#29
Feb 11, 2018, 10:47 am Last Edit: Feb 11, 2018, 01:43 pm by Robin2
Heat-Pressure-The liquid level gives an alarm over the standard values.
The problem is checked on the screen.

Newguitar
Ship Machine Personnel
cnc micro control card programming specialist.
Autocad+Delph+C# software specialist.
This is still meaningless.

I won't waste my time reading this Thread again.

...R
Two or three hours spent thinking and reading documentation solves most programming problems.

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