Searching \ for '[EE] Want to detect auto turn signal blinker light' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/index.htm?key=want+detect+auto
Search entire site for: 'Want to detect auto turn signal blinker light'.

Exact match. Not showing close matches.
PICList Thread
'[EE] Want to detect auto turn signal blinker light'
2009\03\07@222544 by solarwind

picon face
On Sat, Mar 7, 2009 at 8:42 PM, Michael Algernon <spam_OUTpicTakeThisOuTspamnope9.com> wrote:
> I want to build a product that can be mounted looking at the
> instrument panel that will be capable of detecting the turn signal
> blinker lights even in bright sunlight.  I want to alert the driver if
> the signal has been on for 30 seconds or more.  One thought I had was
> to look at the instrument panel with opto sensors that filter RGB and
> look for the particular color of the blinkers plus detect the periodic
> nature of the blinkers.
> I am asking for suggestions about how to proceed.

Since this is a consumer product, I imagine that you want to make it
as simple as possible for the customer to mount and set up. How about
scanning for the noise that the turn signals make? You know... the
tick tock noise. They come on at specific intervals and always make
the same sound so it would be a lot easier to make? Also, the product
can be placed anywhere and doesn't need to be in the optical line of
sight.

Just a thought. I'm just a kid, hey what do I know, right?

2009\03\07@235932 by Vitaliy

flavicon
face
"solarwind" wrote:
> I'm just a kid,

If I only had a dime, for every single time...

2009\03\08@002303 by Bob Blick

face
flavicon
face
Vitaliy wrote:
> "solarwind" wrote:
>> I'm just a kid,
>
> If I only had a dime, for every single time...


This is blather and has no place in OT, much less EE.

You guys need to follow the rules.

You are not newbies and I am tired of cutting you slack.

Not only you two, to all chatty offenders. (Michael, don't pretend it
doesn't apply to you too)

Don't post in EE or PIC unless it is on topic. It ain't hard to figure out.

Consider this an admin warning.


Thank you.

-Bob

2009\03\08@013534 by Michael Algernon

flavicon
face
The tick-tock sound might work.   ( thanx to SW )  I am not sure every  
turn signal system goes tick-tock.
I definitely don't want to connect to any hard wires.
From the customer's POV , the unit is battery powered ( AAA, or AA or  
9V or similar ).
All the customer does is attach the unit somewhere using magnets,  
velcro, ???
Then they train it.  Which would be pushing a training button and  
turning on the signal blinkers.
Then they choose a delay.
Then they are done.
MA


On Sat, Mar 7, 2009 at 8:42 PM, Michael Algernon <.....picKILLspamspam@spam@nope9.com> wrote:
> I want to build a product that can be mounted looking at the
> instrument panel that will be capable of detecting the turn signal
> blinker lights even in bright sunlight.  I want to alert the driver if
> the signal has been on for 30 seconds or more.  One thought I had was
> to look at the instrument panel with opto sensors that filter RGB and
> look for the particular color of the blinkers plus detect the periodic
> nature of the blinkers.
> I am asking for suggestions about how to proceed.

2009\03\08@045815 by Tony Smith

flavicon
face
Doesn't seem to all that elegant, eg why batteries when a cigarette lighter
socket is available?  The tic-toc sound is a function of the flasher unit
being a relay, some units are electronic.  My bikes are.

Some cars used to do this, mainly French ones I think.  Motorcycles too, my
memory says Harley Davidson, but that's a bit too technologically advanced
for them.  On the other hand having to remember to turn the blinkers off
(should you in fact use them anyways) would distract from the main HD task
of looking cool/mean/mysterious/idiotic etc, so maybe it's true.  More
likely BMW.

Easiest way is to build it as a replacement flasher unit.  No need for funny
methods to monitor the blinkers (sound, light, current etc), nor battery
power.  Extra features can include lamp failure warning & hazard lights.

Bonus points if you can detect the car moving, the wheels turning and
straightening back up (indicating a corner), and starting the timer after
that (and/or distance travelled).  In that case there's no need to alert the
driver, just switch the blinkers off.  There's the case where someone pulls
over to the side of the road, there you want the blinkers to stay on and not
have a warning sound or cancellation after a few minutes.

I'm fairly sure this has been done before...

Yep, see US patent 5353007, and application US 2006/0164226 and a bunch of
others.  The first monitors the brakes (not bad), and starts the timer when
they are released.  I not sure about the combined brake/flasher lights he
talks about.  Note the flow chart on the second one, how novel is that?  

I like my idea better.

Tony






{Quote hidden}

2009\03\08@085038 by olin piclist

face picon face
Tony Smith wrote:
> Doesn't seem to all that elegant, eg why batteries when a cigarette
> lighter socket is available?  The tic-toc sound is a function of the
> flasher unit being a relay, some units are electronic.

The electronic units I've seen make a deliberate sound to help remind the
driver the blinkers are on.

Let's keep this in perspective too.  How often do you see a car driving down
the road that accidentally has its blinkers on?  It happens, but is really
quite rare.  Then of the few people that did this and then noticed it, how
many are going to be willing to install a gizmo so that it doesn't happen
again, when they figure is probably won't happen again for years anyway.
Sounds like yet another answer to a question nobody asked.


********************************************************************
Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products
(978) 742-9014.  Gold level PIC consultants since 2000.

2009\03\08@100007 by Carl Denk

flavicon
face
Probably depends on the part of the world you are driving in. It seems
fairly common around here, driver signals a lane change, and forgets to
turn off the blinker. I try to hold the turn signal lever far enough
travelto get the signal, but short of the detent (you can fairly easy do
that on the Fords). But once in a while I miss it for a mile or 2, and
feel bad about it. Locally we have an intersection that is notorious.
There is a sweeping right turn on a "Y" branch, 800' to a 4 way stop
intersection, where many people turn right, and from that new direction
road lots of people are turning left with a  few going straight.  From
the "Y", the turn isn't sharp enough to cancel the turn signal, at the
stop sign, the on coming from the right think you are going to turn, and
then they enter the intersection, you go straight, and there is a
frequent fender bender. The warning sign says "Check your turn signal",
but there are still benders. ~)

I would prefer brighter, better located indicator lights, but then again
how many drivers scan the instrument panel.

Olin Lathrop wrote:
{Quote hidden}

2009\03\08@100358 by Tony Smith

flavicon
face
> > Doesn't seem to all that elegant, eg why batteries when a cigarette
> > lighter socket is available?  The tic-toc sound is a function of the
> > flasher unit being a relay, some units are electronic.
>
> The electronic units I've seen make a deliberate sound to help remind the
> driver the blinkers are on.
>
> Let's keep this in perspective too.  How often do you see a car driving
down
> the road that accidentally has its blinkers on?  It happens, but is really
> quite rare.  Then of the few people that did this and then noticed it, how
> many are going to be willing to install a gizmo so that it doesn't happen
> again, when they figure is probably won't happen again for years anyway.
> Sounds like yet another answer to a question nobody asked.


I'm sure you could flog a few on late night telly.

"Hey you!"
"Yes you, dumbarse!"
"Turn your blinkers off, you moron!"
"Where'd ya get ya licence anyway, loser!"

Has this happened to you?  Have you ever felt embarrassed due to your
problem?  Well, relief is at hand!  Now with the new 'Dumbarse Be Gone'
automated blinker system, getting yelled at in traffic will be a thing of
the past!  Hold your head up high and cruise down our highways with pride,
confidently knowing your blinkers are off like they should be.

The first 10 callers will receive a second 'Dumbarse Be Gone' kit totally
free, the perfect gift for that special someone, you wouldn't want them to
be called a dumbarse too, would you?  Order now!

And every caller receives a set of bumper stickers with the slogan "My
blinkers ARE off, you dumbarse moron!".  Call now!

Tony

(I do believe I may have watched too much late night telly.)



2009\03\08@103306 by Rolf

face picon face
Olin Lathrop wrote:
[snip]
>
> Let's keep this in perspective too.  How often do you see a car driving down
> the road that accidentally has its blinkers on?  It happens, but is really
> quite rare.  Then of the few people that did this and then noticed it, how
> many are going to be willing to install a gizmo so that it doesn't happen
> again, when they figure is probably won't happen again for years anyway.
> Sounds like yet another answer to a question nobody asked.
>
>  
I was part of an amusing incident once ... driving down a freeway and
come accross a major 'snarl-up'. highway speed to about 40kph in no time.

Turns out there's a school bus (no kids on board) at the front,
travelling nearly highway speed with it's red lights flashing. People
were completely unsure about what to do... created mayhem.

People slowed right down until they realized that the bus driver was
oblivious, most people then passed, waved, gestured, hooted, etc. but
that bus driver just kept on going causing mayhem...

They could have used some device to say "Hey, idiot, turn off the damn
lights!".

Rolf

2009\03\08@105044 by Tamas Rudnai

face picon face
On Sun, Mar 8, 2009 at 2:32 PM, Rolf <.....learrKILLspamspam.....rogers.com> wrote:

> They could have used some device to say "Hey, idiot, turn off the damn
> lights!".
>

Dont know that school bus but on my car for the same reason the indicator
makes a noise. Hazard lights also blinks in a huge triangle so the driver
has to be blind and depth to not noticing what's going on. Here in Dublin in
every type of buses I can hear the similar noise - sometimes that's how I
realise I am on a wrong bus as the driver indicates to turning off the road.
In this case after a little panic some negotiation is needed with the driver
to be able to get off while the bus is still waiting for the lights ;-)

Tamas
--
Rudonix DoubleSaver
http://www.rudonix.com

2009\03\08@110848 by Rolf

face picon face
Tamas Rudnai wrote:
> On Sun, Mar 8, 2009 at 2:32 PM, Rolf <EraseMElearrspam_OUTspamTakeThisOuTrogers.com> wrote:
>
>  
>> They could have used some device to say "Hey, idiot, turn off the damn
>> lights!".
>>
>>    
>
> Dont know that school bus but on my car for the same reason the indicator
> makes a noise. Hazard lights also blinks in a huge triangle so the driver
> has to be blind and depth to not noticing what's going on. Here in Dublin in
> every type of buses I can hear the similar noise - sometimes that's how I
> realise I am on a wrong bus as the driver indicates to turning off the road.
> In this case after a little panic some negotiation is needed with the driver
> to be able to get off while the bus is still waiting for the lights ;-)
>
> Tamas
>  
Tamas, in Canada and USA the busses are fitted with Red lights at the
back and front. Rules of the road require that when the lights are
flashing, all vehicles (travelling in any direction) are required to
stop in order for the bus to load or unload kids. The assumption is that
the kids can then safely cross the road if they need to get to the other
side.

http://www.youtube.com/watch?v=YFyv4uzSGto&NR=1

Rolf

2009\03\08@135232 by Bob Blick

face
flavicon
face
Tony(and others),

I am starting to crack down on off-topic stuff in EE and PIC.

Don't post idle chit-chat like this in EE or PIC.

Thanks,

Bob


Tony Smith wrote:
{Quote hidden}

2009\03\08@143614 by Michael Algernon

flavicon
face
I find my blinker is left on too long about once every two days.  So  
for me it would be grand.

I think I cannot depend on the blinker making a sound.  So I will have  
to go with optical means.
I agree that car manufacturers do a poor job of making the  
annunciators on a car obvious.
I don't want to use a cigarette lighter due to cords drooping in odd  
places.
Lots of cars don't have ODB.
I do not want the installer to have to be able to find anything other  
than the instrument panel.  That leaves out plugging in a flasher  
socket.  Who knows how many different types there are anyway ?

So I invite suggestions on how to detect blinking lights in bright  
sunlight.  I have got some ideas, would like to hear yours.

Ultimately, I would like to figure out how to use a wide angle camera  
( $10 at sparkfun.com )  and maybe a Linux wall-wart    ( http://www.marvell.com/products/embedded_processors/developer/kirkwood/sheevaplug.jsp
 )  to perform machine vision object recognition.
Then I can look for blinking lights, position of gauges, monitor the  
speedometer, etc.  Plus the wall-wart can look ahead and behind the  
car and calculate time to impact based on relative motion.  And it can  
listen for emergency vehicles and determine where they are.  And it  
can thank drivers for letting me change lanes.
MA

{Quote hidden}

2009\03\08@154014 by Tony Smith

flavicon
face
> I find my blinker is left on too long about once every two days.  So
> for me it would be grand.
>
> I think I cannot depend on the blinker making a sound.  So I will have
> to go with optical means.
> I agree that car manufacturers do a poor job of making the
> annunciators on a car obvious.
> I don't want to use a cigarette lighter due to cords drooping in odd
> places.
> Lots of cars don't have ODB.
> I do not want the installer to have to be able to find anything other
> than the instrument panel.  That leaves out plugging in a flasher
> socket.  Who knows how many different types there are anyway ?
>
> So I invite suggestions on how to detect blinking lights in bright
> sunlight.  I have got some ideas, would like to hear yours.
>
> Ultimately, I would like to figure out how to use a wide angle camera
> ( $10 at sparkfun.com )  and maybe a Linux wall-wart    (
>
www.marvell.com/products/embedded_processors/developer/kirkwood/sheev
aplu
> g.jsp
>   )  to perform machine vision object recognition.
> Then I can look for blinking lights, position of gauges, monitor the
> speedometer, etc.  Plus the wall-wart can look ahead and behind the
> car and calculate time to impact based on relative motion.  And it can
> listen for emergency vehicles and determine where they are.  And it
> can thank drivers for letting me change lanes.
> MA


There's 2 main types, 2-pin or 3-pin.  The 2-pin is the old type, they are a
straight thermal switch, a bimetal switch that works the same as Xmas tree
lights.  Current flows, lights light up, switch heats up & opens, light go
out, switch cools & closes, repeat.  Tic toc tic toc.  Relies on wattage to
work properly, which is why replacing your bulbs with LEDs doesn't quite
work.

The 3-pin is exactly the same, the third pin for the dash indicators.  Any
variations are either wattages ratings or shape.

No doubt the Model-T and a few other exotics have a different setup.

Good luck on the rest of the, uh, stuff.

Tony

2009\03\08@170435 by Steve Smith

flavicon
face
The most obvious place to connect this little widget is in the trailer
socket..... Bluetooth it back to the telephone / radio and there's your
solution.... Direct connection to the car and wireless audio to the operator


Just an idea...
Steve

{Original Message removed}

2009\03\08@173537 by olin piclist

face picon face
Steve Smith wrote:
> The most obvious place to connect this little widget is in the trailer
> socket..... Bluetooth it back to the telephone / radio and there's
> your solution.... Direct connection to the car and wireless audio to
> the operator

How about run a small wire from near the blinker with the other end wrapped
around the radio antenna.  You'll hear a annoying pop in the radio every
time the light blinks.


********************************************************************
Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products
(978) 742-9014.  Gold level PIC consultants since 2000.

2009\03\08@175126 by solarwind

picon face
Ok, how about this, since the lights generate a changing magnetic
field when they turn on and off, a detector can be placed near a
light. I don't know if that will work, but it's an idea.

2009\03\08@175327 by Peter

picon face
Most cars have a blinkenlight in the dashboard blinking in sync with the turn
light. Interfacing to it optically or electrically should not be a problem.

Peter

2009\03\08@183011 by olin piclist

face picon face
solarwind wrote:
> Ok, how about this, since the lights generate a changing magnetic
> field when they turn on and off, a detector can be placed near a
> light. I don't know if that will work, but it's an idea.

It would be a relatively small magnetic field.  There is very little area
enclosed by any loop of current.


********************************************************************
Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products
(978) 742-9014.  Gold level PIC consultants since 2000.

2009\03\08@185600 by cdb

flavicon
face
Probably outside the realms of what the OP was thinking, how about a
heads up type display?

A cheap Opto or camera (Optodetector ought to do the job) and then
project it via LEDS onto the windscreen.

One drawback (I used to have a Nissan Syliva that had heads up for the
speedometer - very useful too) would be the need to place some form of
see through optically reflective material on the windscreen. The other
drawback would be where to legally place it - I assume this is one
reason Nissan put it at the bottom right hand corner of the screen
(right hand drive cars). But wherever on the drivers side the display
is, it is quite noticeable.

Colin
--
cdb, @spam@colinKILLspamspambtech-online.co.uk on 9/03/2009

Web presence: http://www.btech-online.co.uk  

Hosted by:  http://www.1and1.co.uk/?k_id=7988359







2009\03\08@185813 by Michael Algernon

flavicon
face
It's worth testing.  One cannot be sure that the switch to LEDs as  
blinkers won't make it impossible.
MA
> On Mar 8, 2009, at 3:51 PM, solarwind wrote:
>
> Ok, how about this, since the lights generate a changing magnetic
> field when they turn on and off, a detector can be placed near a
> light. I don't know if that will work, but it's an idea.

2009\03\09@010953 by Tony Smith

flavicon
face
> Steve Smith wrote:
> > The most obvious place to connect this little widget is in the trailer
> > socket..... Bluetooth it back to the telephone / radio and there's
> > your solution.... Direct connection to the car and wireless audio to
> > the operator
>
> How about run a small wire from near the blinker with the other end
wrapped
> around the radio antenna.  You'll hear a annoying pop in the radio every
> time the light blinks.


Wrap the wire around your leg and run high voltage thru it instead.  That
should work as a handy reminder.  

Or move to London and make use of the CCTV system.  Simply add licence plate
recognition (if it isn't already there) and detecting a blinker will be a
doddle after that.  The system can match plates to owner and ring them to
tell them they are a moron.  Perhaps facial recognition too, to stop the
system ringing the wrong moron.

Tony

2009\03\09@050851 by Alan B. Pearce

face picon face
>The electronic units I've seen make a deliberate sound to
>help remind the driver the blinkers are on.

IIRC the sound is a legal requirement, which 'just happened to be available
with the original mechanical blinker units, and has to be added to the
electronic units.

2009\03\09@072648 by olin piclist

face picon face
Michael Algernon wrote:
> It's worth testing.  One cannot be sure that the switch to LEDs as
> blinkers won't make it impossible.

I don't see why LEDs would have significantly different magnetic fields
around them than ordinary LEBs (light emitting bulbs).  Either way the
magnetic field will be quite small.

I still don't understand what the OP is trying to get to.  Is this a one off
because he leaves the blinker on regularly?  If so, there are many jury
rigged schemes that could work.  As a product, the whole concept sounds
silly, so I don't see the point worrying about different types of blinker
modules, issues with wiring into the harness, etc.


********************************************************************
Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products
(978) 742-9014.  Gold level PIC consultants since 2000.

More... (looser matching)
- Last day of these posts
- In 2009 , 2010 only
- Today
- New search...