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'[EE] Want to detect auto turn signal blinker lig'
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.
Denver, CO 720 222 1309
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Wouldn't be that difficult to get tapped to the turn signal circuit
itself, then use that to power an opto isolator. This could all be
hidden. The circuit should have wires under the instrument panel at the
steering column. Need to watch for 4 way flashers as a special case.
Michael Algernon wrote:
Carl Denk wrote:
> Wouldn't be that difficult to get tapped to the turn signal circuit
> itself, then use that to power an opto isolator. This could all be
> hidden. The circuit should have wires under the instrument panel at the
> steering column. Need to watch for 4 way flashers as a special case.
At least in theory, on some vehicles this information is also available on
the OBD port (I was just reading the standard that describes the message
A question for the OP: how do you envision this thing, from the user's POV
(unless it's a secret, of course)?
On Mar 7, 2009, at 11:05 PM, Vitaliy wrote:
> A question for the OP: how do you envision this thing, from the
> user's POV
> (unless it's a secret, of course)?
After 180 seconds of continuous blinker activity, it will play someone
yelling, "Hey dumbass! You don't know how to drive and are a danger
to others! Take public transportation next time!" from an ICD chip
through a well designed 7W or greater audio amp (the upgraded next
year's model will be called the "Wake the Dead, or at least Grandpa"
version) and a minimum size 5" speaker "inconspicuously" mounted in
the driver's headrest.
With options for male and female voices just for the "wow" factor.
Nate Duehr wrote:
> After 180 seconds of continuous blinker activity, it will play someone
> yelling, "Hey dumbass!
You have to keep in mind there are occasions where the blinker might be on
legitimately for more than a useful timeout. Imagine being stuck in traffic
in the right turn lane. If you're doing it right, you have the blinker on.
I can think of some intersections and times of day in the Boston area where
you could be sitting there for minutes. On the other hand waking up the
driver by telling him he is a dumbass might help break up the boredom.
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