Fusion Brain and Window Contorls - Page 3

h3rk · 07-19-2008, 10:00 AM

nope, they are all not the same, mine, for instance uses an encoder for the automatic function, some use limit switches, some detect other parameters. look up the install manual for the DEI-530T, it's set up for what you are describing, but I think even that manual acknowledges differences.
And I can't figure out your ascii art.

A lot of cars use a DPDT switch setup. And most vehicles these days have more than a single switch for each window.

2k1Toaster · 07-19-2008, 10:07 AM

Quote: Originally Posted by BrownieMan

Wouldn't it just be easier to put the relays on a timer?

Pros: You don't have to buy a current sensor

Cons: You have to time how long it takes for the window to close

Concerns: Will the other method of using a current sensor cut power sooner than just timing how long it takes the window to roll up? I'm imagining that the timer wouldn't be active more than a second or two than it needs to be; this is also probably how long the average person holds the button longer than need be held to close/open the window.

Negative Feedback is the key. Blindly driving things is not a good idea.

BrownieMan · 07-19-2008, 10:17 AM

Okay, you guys have convinced me. Does anyone have a guide of sorts on how to wire your windows or is it pretty much "look at your car's wiring diagram and figure it out"?

Also, any recommendations on current sensors?

h3rk · 07-19-2008, 10:31 AM

hey 2K1, do you get what I mean about sensing the voltage change right prior to the motor terminal, I think it will be as good as sensing current, and cheaper.

and BrownieMan, I can probably help more if you tell me what vehicle your doing this with. I'd hate to set u up with a generic guide, that may not work for your specific application. There's a chance I can't but...

Also, the DEI-530T window module install manual, and it can be found with google. It is such a guide, but it's for a module that provides proprietary functionality. You're going to have to fill in some blanks there too.

BrownieMan · 07-19-2008, 10:56 AM

Well, I havn't even bought my car yet, could be a couple months maybe, but it's going to be a Toyota Yaris.

Civic Modz · 07-20-2008, 01:27 AM

For those that are interested, this is how you control a motor to spin and reverse. I recommend using a relay across your factory switches if it has the ability to automatically stop, it just makes everthing easier. If not then this circuit will work.

The fuse is just protection for a short.
The shunt has to be powerfull enough to take the current watts = (I squared R) or IxIxR.
The shunt cant have a too high resistance as the motor wont spin.
The shunt cant be too low else it would be hard to measure the voltage.

*note, the initial current peak in the graph is due to the motor starting up.

I have seen some other circuits that use a magnetic pick-up on the motor and the amount of pulses are counted to determine when to stop. This way is allot more fun as you can determine if the window was stopped half way up, and possibly give a warning or error.
With this pick-up system you can also tell if you motor is dying or needs lube buy timing how long it takes to reach the top and how many pulses have been counted. You will notice that the motor will be slower when the car is off.