Seats wet from rain, now passenger seatbelt alarm

[Tcoat]

Originally Posted by Ultramaroon

More options...

[humfrz]

Originally Posted by Tcoat

There are options

Now THAT gives me an idea. Hook the back up sensor to a model of a girl with a big stop sign, that would pop up in front of my face ........

The last picture gives me some ideas too .....


humfrz

[humfrz]

Originally Posted by Ultramaroon

More options...

Well, that gives me another idea ....... what about a permanent reverse lockout ......


humfrz

[Ultramaroon]

Originally Posted by Tcoat

.

Even better.

[PetrolioBenzina]

Just FYI at this point, there is an easy way to dry the interior of a car. No need to buy rice or a real desicant, it's built in to the car. It's called "AC" on the dash, and part of what it does is remove moisture from the interior of the car.

[Tcoat]

Originally Posted by PetrolioBenzina

Just FYI at this point, there is an easy way to dry the interior of a car. No need to buy rice or a real desicant, it's built in to the car. It's called "AC" on the dash, and part of what it does is remove moisture from the interior of the car.

[Spuds]

Originally Posted by Tcoat

The sensors are not weight activated switches but simply detectors that read electrical conductivity. It should be common knowledge that liquids conduct electricity so if you get the seat wet it thinks there is somebody there.

Because I'm bored...

You are wrong #1. Liquids are not good conductors because they are liquid. Distilled water, vegetable oil, and many other liquids are poor conductors. Water is usually thought of as conductive because it suspends other molecules (metals etc.) In solution, thus allowing the transfer of ions. Also look up fishtank computer, they are really cool. Pun intended.

You are wrong#2. The sensors do not measure conductivity. I'm pretty sure Subaru/Toyota isn't sticking electrodes in my butt every time I sit down so they can send current through said butt to determine my conductivity. What they are doing is measuring the sum capacitance of the seat and anything on it against a known baseline. The seat uses the same principals as a touchscreen does to determine if something is touching it.

[Spuds]

PS.

Originally Posted by Tcoat

[humfrz]

Originally Posted by Spuds

Because I'm bored...

You are wrong #1. Liquids are not good conductors because they are liquid. Distilled water, vegetable oil, and many other liquids are poor conductors. Water is usually thought of as conductive because it suspends other molecules (metals etc.) In solution, thus allowing the transfer of ions. Also look up fishtank computer, they are really cool. Pun intended.

You are wrong#2. The sensors do not measure conductivity. I'm pretty sure Subaru/Toyota isn't sticking electrodes in my butt every time I sit down so they can send current through said butt to determine my conductivity. What they are doing is measuring the sum capacitance of the seat and anything on it against a known baseline. The seat uses the same principals as a touchscreen does to determine if something is touching it.

Well now, ol Spuds learnt me two things today .......

* deionized (DI) water is slightly electrically conductive. The sight conductivity is due to water's ability to self-ionize, forming H3O+ and OH- ions.

* how electrostatic capacitance sensors ODS work.





humfrz

[PetrolioBenzina]

Originally Posted by Spuds

Because I'm bored...

You are wrong #1. Liquids are not good conductors because they are liquid. Distilled water, vegetable oil, and many other liquids are poor conductors. Water is usually thought of as conductive because it suspends other molecules (metals etc.) In solution, thus allowing the transfer of ions. Also look up fishtank computer, they are really cool. Pun intended.

You are wrong#2. The sensors do not measure conductivity. I'm pretty sure Subaru/Toyota isn't sticking electrodes in my butt every time I sit down so they can send current through said butt to determine my conductivity. What they are doing is measuring the sum capacitance of the seat and anything on it against a known baseline. The seat uses the same principals as a touchscreen does to determine if something is touching it.

How does a cellphone in a case trigger the seatbelt warning? Is that capacitance as well?

[Ultramaroon]

Originally Posted by PetrolioBenzina

How does a cellphone in a case trigger the seatbelt warning? Is that capacitance as well?

That's the circuit being wigged out by the transmitter in the phone. Same reason the airlines ask you to turn them off in the plane.

[humfrz]

Originally Posted by PetrolioBenzina

How does a cellphone in a case trigger the seatbelt warning? Is that capacitance as well?

You may find this an interesting read ......

http://www.stanleysubaru.com/blog/20...-my-subaru.htm


humfrz

[humfrz]

Originally Posted by Ultramaroon

That's the circuit being wigged out by the transmitter in the phone. Same reason the airlines ask you to turn them off in the plane.

So, is that what wigged out your GPS when you made those wrong turns .. or was ol @Tcoat 's Depend® wet ...



I'm off to beddie bye ....... big week of day long day care coming up for all three granddaughters .......


humfrz

[Tcoat]

Originally Posted by Spuds

Because I'm bored...

You are wrong #1. Liquids are not good conductors because they are liquid. Distilled water, vegetable oil, and many other liquids are poor conductors. Water is usually thought of as conductive because it suspends other molecules (metals etc.) In solution, thus allowing the transfer of ions. Also look up fishtank computer, they are really cool. Pun intended.

You are wrong#2. The sensors do not measure conductivity. I'm pretty sure Subaru/Toyota isn't sticking electrodes in my butt every time I sit down so they can send current through said butt to determine my conductivity. What they are doing is measuring the sum capacitance of the seat and anything on it against a known baseline. The seat uses the same principals as a touchscreen does to determine if something is touching it.

You are correct. I over simplified and used common but inaccurate terms in that simplification. Seemed like the only way to get the message across at the time.