Computer how does the car know... - Civinfo
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post #1 of 41 (permalink) Old 14th May 2007, 16:48 Thread Starter
 
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how does the car know...

that a passenger is sat in the seat? its quite clever how as soon as someone sits in the seat and it will show if they have their seatbelt in or not.
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post #2 of 41 (permalink) Old 14th May 2007, 16:59
 
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presumably a switch or sensor in the seat
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post #3 of 41 (permalink) Old 14th May 2007, 17:01
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Pressure pad of some sort I presume?
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post #4 of 41 (permalink) Old 14th May 2007, 17:18
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The way I see it, is that if the passenger door is opened it creates a trigger, and then senses if the seatbelt is in or not. The same applies to the back doors/belts and drivers.
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post #5 of 41 (permalink) Old 14th May 2007, 17:19
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I think a sensor that has to do with weight... If you put something lite on the chair, nothing beeps....
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post #6 of 41 (permalink) Old 14th May 2007, 18:35
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Quote:
Originally Posted by CrazyHawk View Post
The way I see it, is that if the passenger door is opened it creates a trigger, and then senses if the seatbelt is in or not. The same applies to the back doors/belts and drivers.
That cant be right as on the 3 doors it still knows if someone is sat on the back seats or not so they must have some sort of pressure pads or switches in the seats
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post #7 of 41 (permalink) Old 14th May 2007, 18:51
 
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Quote:
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The way I see it, is that if the passenger door is opened it creates a trigger, and then senses if the seatbelt is in or not. The same applies to the back doors/belts and drivers.

No, therer is a pressure switch in the seat. I tried it!

If you lift your weight off the passenger seat, you can see the warning light go out, when you sit down it comes on again.

If it were to do with the door, we'd all be in trouble. I often open the passenger door to put my fleece/coat/CDs before I get in the pilot's seat.
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post #8 of 41 (permalink) Old 14th May 2007, 18:56
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The seats are fitted with 'occupancy' sensors. I don't know how Honda's work, but the ones I've been told about are capacitive proximity sensors.
This way you just have to be over the seat area, not necessarily pressing hard in the right spot. Also, people are sufficiently full of water to make a big difference.

I'm not going to take the seats apart to find out though
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post #9 of 41 (permalink) Old 14th May 2007, 18:59
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I get the seatbelt warning on if i open the passenger doors before moving off.
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post #10 of 41 (permalink) Old 14th May 2007, 19:32
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It is definately pressure related as it stops if you lift you weight off the seat as Bungle says.
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post #11 of 41 (permalink) Old 14th May 2007, 19:59
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Only on the front seats though, nothing on the rear.
The rear just have a seat belt plugged in notification.
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post #12 of 41 (permalink) Old 14th May 2007, 21:06
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Only on the front seats though, nothing on the rear.
The rear just have a seat belt plugged in notification.

So how does it know when people are in the back? When my kids get in the seatbelt signs come up!!
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post #13 of 41 (permalink) Old 14th May 2007, 22:28
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It is definately pressure related as it stops if you lift you weight off the seat as Bungle says.
I heard of women who's handbags set them off.
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post #14 of 41 (permalink) Old 15th May 2007, 13:27
 
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So how does it know when people are in the back? When my kids get in the seatbelt signs come up!!
It doesn't. It just shows if the seatbelts are plugged in or not at the back. Try plugging the seatbelts in without the kids in the back and it will show that the seatbelts are plugged in on the screen.
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post #15 of 41 (permalink) Old 15th May 2007, 13:39
 
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It doesn't. It just shows if the seatbelts are plugged in or not at the back. Try plugging the seatbelts in without the kids in the back and it will show that the seatbelts are plugged in on the screen.
Surely it bleeps if the passenger in the back doesn't fit their belt?

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post #16 of 41 (permalink) Old 15th May 2007, 13:44
 
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Surely it bleeps if the passenger in the back doesn't fit their belt?

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Nope. I have 2 chilld seats in the back and unless I plug in the seatbelts the screen shows them as unplugged. No beeping to tell me to plug them in. Same if I remove the seats and use real passengers!!
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post #17 of 41 (permalink) Old 15th May 2007, 13:47
 
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I'll troll around a bit today looking for a hitch Hiker to bung in the back for testing.

Will report back.

"The only difference between a dead lawyer lying in the road and a dead dog, is that you will find skid marks near the dog!"

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post #18 of 41 (permalink) Old 15th May 2007, 14:08
 
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So how does it know when people are in the back? When my kids get in the seatbelt signs come up!!
On the EX (at least), whnever you open the rear doors, the central display then switches to the seat belt image, but there are NO sensors in the rear seats.
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post #19 of 41 (permalink) Old 15th May 2007, 16:22
 
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Its definately a pressure thing, but surely with the people in the back you just know where they are and can tell them to belt up?
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post #20 of 41 (permalink) Old 15th May 2007, 17:38
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My mate sat in the passengers seat in my "old" 06 SE leather. She's a small lass, started driving, the seat belt reminder didn't come on

She had to push down on the seat with her hands for it go off.

The manual does say that if a small child under 12 may not trigger the sensor.

Shes 19 lol

Last edited by Harps; 15th May 2007 at 17:43.
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