How to review ME's design from EE point of view?

[Boki]

Dear All,

Could you please advice

when ME engineer send the intension design to EE, how to review that
design from EE point of view?

size / width / height and ? Thank you very much!

BR/
Boki.

 

[Pooh Bear]

Dear All,

Could you please advice

when ME engineer send the intension design to EE, how to review that
design from EE point of view?

size / width / height and ? Thank you very much!

Mainly - is there enough space to fit the required parts and power
source - *and* dissipate the heat.

Graham

 

[Boki]

It seems that dissipate the heat is knowledge.

BR/
Boki.

 

[Pooh Bear]

It seems that dissipate the heat is knowledge.

Some people unwisely overlook this *important* point.

Graham

 

[Tim Shoppa]

It seems that dissipate the heat is knowledge.

Beauty is truth,
truth beauty,
and dissipate the heat is knowledge.

Tim.

 

[Mark Fergerson]

Boki wrote:

Mainly - is there enough space to fit the required parts and power
source - *and* dissipate the heat.

I most definitely concur.

However, you also have to know what you're _really_ tasked to do, not
just what you agreed to do. I'm talking about the marketing folks who'll
blow gaskets when told "The package will have to be bigger", "The vents
have to go here instead of where your artist put them", "You can't put
the buttons/lights/slots/power cord/etc there", and stuff like that.

Ask me how I know...


Mark L. Fergerson

 

[Tim Wescott]

It seems that dissipate the heat is knowledge.

BR/
Boki.

Well, knowledge is power, so presumably the smarter the board it the
more heat it has to dissipate, unless it's transmitting the knowledge
somewhere else, somehow (ethernet?).

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

Posting from Google? See http://cfaj.freeshell.org/google/

 

[Joerg]

Hello Mark,

However, you also have to know what you're _really_ tasked to do, not
just what you agreed to do. I'm talking about the marketing folks who'll
blow gaskets when told "The package will have to be bigger", "The vents
have to go here instead of where your artist put them", "You can't put
the buttons/lights/slots/power cord/etc there", and stuff like that.

And then they told us it absolutely has to be a plastic case. That was
ok but when they also told us they wanted it purple I cringed.

Got to be careful here, I am married to a marketeer.

Regards, Joerg

 

[Tim Williams]

Well, knowledge is power, so presumably the smarter the board it the
more heat it has to dissipate, unless it's transmitting the knowledge
somewhere else, somehow (ethernet?).

Is that like the less knowledgable computer users phoning the ISP if their
servers are on fire, because their computers are "recieving" the fire? ;-)

Honestly! Several such stories are found here:
http://www.rinkworks.com/stupid/

Tim

 

[JeffM]

Well, knowledge is power...

Tim Wescott

My que to trot out this old gem for those who haven't seen it:

Given:
Knowledge = Power
Time = Money
Power = Work/Time

Substituting Money into the Power equation:
Power = Work/Money

Substituting Knowledge into the Power equation:
Knowledge = Work/Money

Now solving for Money:
Money = Work/Knowledge

Which means the less you know,
the more you get paid for doing the same work.
This is Morse's Axiom
(also known as The Management Equation).

 

[Ken Smith]

Dear All,

Could you please advice

when ME engineer send the intension design to EE, how to review that
design from EE point of view?

size / width / height and ? Thank you very much!

The first time, you get out a big red crayon and draw a huge X on the page
and scribble "WRONG!" on it and send it back. MEs like it when you do
that.

But seriously:

First check that what needs to go inside will actually fit into the space.

Next check that it won't require that the PCB be stuffed while installed.

Next check that he didn't require that wires of to the chassis and the
cover such that you will have to train ants to do the last connection.

Next look at the issues of electrical safety and heat.

Next ask "what will happen when this gets dropped by the customer".
Note: anything that weights less than 6x10^24Kg will be dropped by the
customer.

Next, imagine you have to walk through the manuacturing shop every day and
they are all armed.

Next, go tell marketing, that it was a real struggle but their idea payed
off. Show it to them and say see we got it exactly like you wanted.

 

[Boki]

: )

Very interesting, thanks!

BR/
Boki.

 

[Boki]

Good ratiocination.

BR/
Boki.

 

[Richard Henry]

Dear All,

Could you please advice

when ME engineer send the intension design to EE, how to review that
design from EE point of view?

size / width / height and ? Thank you very much!

BR/
Boki.

I assume you have done at least a block-diagram design, and have idnetified
all the large components and connectors.

Is there enough space on the board?

Where are the mounting points? Do they interfere with a logical layout?

Is there space off the board for cables and their connecotrs, or will they
require space within the board envelope?

What provisions have been made for cooling?

 

[Paul Hovnanian P.E.]

I most definitely concur.

However, you also have to know what you're _really_ tasked to do, not
just what you agreed to do. I'm talking about the marketing folks who'll
blow gaskets when told "The package will have to be bigger", "The vents
have to go here instead of where your artist put them", "You can't put
the buttons/lights/slots/power cord/etc there", and stuff like that.

MEs and EEs get along pretty well on most issues. Its the architects
that cause the problems.

"What do you mean you can't fit something called '35 kV switchgear' into
a broom closet?"

 

[Ian]

Mark Fergerson wrote:

MEs and EEs get along pretty well on most issues. Its the architects
that cause the problems.

"What do you mean you can't fit something called '35 kV switchgear' into
a broom closet?"

Not at all, architects simply give the issue to the ME as a problem he's
probably
not going to be able to handle, and stand well back (and keep a straight
face).

Worked every time so far ;-)

Regards
Ian

 

[Rich Grise, but drunk]

Some people unwisely overlook this *important* point.

http://en.wikipedia.org/wiki/All_your_base_are_belong_to_us

;-P
Rich
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PE Y+ PGP- t 5+++)-; X- R- tv+ b+ DI++++>+ D-? G e+$ h+ r-- z+
------END GEEK CODE BLOCK------

 

[Rich Grise]

MEs and EEs get along pretty well on most issues. Its the architects
that cause the problems.

"What do you mean you can't fit something called '35 kV switchgear' into
a broom closet?"

--------------
A doctor, an architect, and a computer scientist were arguing about
whose profession was the oldest. In the course of their arguments,
they got all the way back to the Garden of Eden, whereupon the doctor
said, "The medical profession is clearly the oldest, because Eve was
made from Adam's rib, as the story goes, and that was a simply
incredible surgical feat."

The architect did not agree. He said, "But if you look at the Garden
itself, in the beginning there was chaos and void, and out of that, the
Garden and the world were created. So God must have been an architect."

The computer scientist, who had listened to all of this said, "Yes, but
where do you think the chaos came from?"

 

[Joseph2k]

--------------
A doctor, an architect, and a computer scientist were arguing about
whose profession was the oldest. In the course of their arguments,
they got all the way back to the Garden of Eden, whereupon the doctor
said, "The medical profession is clearly the oldest, because Eve was
made from Adam's rib, as the story goes, and that was a simply
incredible surgical feat."

The architect did not agree. He said, "But if you look at the Garden
itself, in the beginning there was chaos and void, and out of that, the
Garden and the world were created. So God must have been an architect."

The computer scientist, who had listened to all of this said, "Yes, but
where do you think the chaos came from?"
---------------
;-)

Cheers!
Rich

A bazillion poxes upon your family. we need less chaos rather than more