Are you interested in vehicle communication technology?
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PassionFords Creator
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From: Blackpool, UK Destination: Rev limiter
Are you interested in vehicle communication technology?
If so, my article on CanBus has now been released to my website.
http://www.motorsport-developments.c...AF279_tech.pdf
Hope you enjoy it.
Want to read 38 more? Click me:
http://www.motorsport-developments.c...AF279_tech.pdf
Hope you enjoy it.
Want to read 38 more? Click me:
Last edited by Stu @ M Developments; Oct 7, 2009 at 04:04 PM.
Been used on equipment for a long time .. Total Fly-By-wire .. No mechanical conection to the controls ..
EDIT: ^^^^ Slightly off-topic .. Forgive me.
Testing the future
Joined: Jul 2003
Posts: 17,597
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From: W. Sussex
I'm sure that will be a good read to many who are not familiar with it 
It is slightly confusing though as at the beginning you talk about ECUs asking for or requesting data which doesn't happen on CANbus. As you say later in the article, the data is just transmitted anyway (in priority order) and each ECU only takes what it needs.
Although you touched on it, I think that you also could have covered more with it like how the indicators are no longer flashed with timer relays but via timing from the ECU which allows nice touches like flashing 3 times for lane changes at the touch of the indicator stalk etc. I don't think many people comprehend just what possiblities there are now.
It is slightly confusing though as at the beginning you talk about ECUs asking for or requesting data which doesn't happen on CANbus. As you say later in the article, the data is just transmitted anyway (in priority order) and each ECU only takes what it needs.
Although you touched on it, I think that you also could have covered more with it like how the indicators are no longer flashed with timer relays but via timing from the ECU which allows nice touches like flashing 3 times for lane changes at the touch of the indicator stalk etc. I don't think many people comprehend just what possiblities there are now.
I'm sure that will be a good read to many who are not familiar with it
It is slightly confusing though as at the beginning you talk about ECUs asking for or requesting data which doesn't happen on CANbus. As you say later in the article, the data is just transmitted anyway (in priority order) and each ECU only takes what it needs.
Although you touched on it, I think that you also could have covered more with it like how the indicators are no longer flashed with timer relays but via timing from the ECU which allows nice touches like flashing 3 times for lane changes at the touch of the indicator stalk etc. I don't think many people comprehend just what possiblities there are now.
It is slightly confusing though as at the beginning you talk about ECUs asking for or requesting data which doesn't happen on CANbus. As you say later in the article, the data is just transmitted anyway (in priority order) and each ECU only takes what it needs.
Although you touched on it, I think that you also could have covered more with it like how the indicators are no longer flashed with timer relays but via timing from the ECU which allows nice touches like flashing 3 times for lane changes at the touch of the indicator stalk etc. I don't think many people comprehend just what possiblities there are now.
I like the hazard lights flashing under heavy braking too
could all this be retro fitted in to an old banger like a cossie at all?
Testing the future
Joined: Jul 2003
Posts: 17,597
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From: W. Sussex
not possible to fit to an old car without a hell of a lot of work with some very sophisticated tools
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having been dealing with CAN and other network controllers on within the motor industry for as long as i can remember i take it for granted that you can just make a car do such functions people have never even heard of
though it is rare to find people interested in such comms networks really in day to day life, then when you tell a customer how the systms on their vehicle works, and what gives/receives signal under address words they sort of look at you as if to say 'yeh ok' and theyre not sure if your just talkin crap.
it is a major development though for motor vehicles, we have been using can in the mainstream for circa 25years (automotive) yet only in the last 5-10 has it become really interesting
though it is rare to find people interested in such comms networks really in day to day life, then when you tell a customer how the systms on their vehicle works, and what gives/receives signal under address words they sort of look at you as if to say 'yeh ok' and theyre not sure if your just talkin crap.
it is a major development though for motor vehicles, we have been using can in the mainstream for circa 25years (automotive) yet only in the last 5-10 has it become really interesting
that is good. i saw one the other day where the brake lights came on and also flashed when they really had to throw the anchor out. all easy to do when the brightness of the lights is controlled by PWM from the ecu
not possible to fit to an old car without a hell of a lot of work with some very sophisticated tools
not possible to fit to an old car without a hell of a lot of work with some very sophisticated tools
.. Altho New to alot of people ..My experience is from the heavy equipment side of things .. Simmilar in everyway but different.
Might find this funny but the limmits are not there with equipment .. The automotive industry laggs behind big time when it comes to fully ECU control of all Vital input function from the driver/Operator. Total Electronic control .. No mechanical connection .. Unlike cars that will never go to fully Fly-By-Wire steering and braking ..
Too many posts.. I need a life!!
Joined: May 2003
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From: Dunedin, New Zealand
Heavy equipment has the advantage of 24volts which allows for less current going through the control units hence they can cram more functions in to one.
CanBus is pretty interesting though yes, a lot of day to day stuff in my job now involves scoping CanBus signals etc.
CanBus is pretty interesting though yes, a lot of day to day stuff in my job now involves scoping CanBus signals etc.
Too many posts.. I need a life!!
Joined: May 2003
Posts: 921
Likes: 1
From: Dunedin, New Zealand
Depends what it is in relation to, but I scope most things now, CanBus or not just to understand what a signal should look like in event of a failure.
Scoping CanBus is only really any good to ensure it is up and running correctly though I suppose.
Scoping CanBus is only really any good to ensure it is up and running correctly though I suppose.
Heavy equipment has the advantage of 24volts which allows for less current going through the control units hence they can cram more functions in to one.
CanBus is pretty interesting though yes, a lot of day to day stuff in my job now involves scoping CanBus signals etc.
CanBus is pretty interesting though yes, a lot of day to day stuff in my job now involves scoping CanBus signals etc.
The ECM is also Fuel cooled .. Ever seen anything like that on a Motor?
Sure it's will be the same as the AUTO industry.
1' Receive 3 types of input?
2' ECM has 3 types of Outputs?
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