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Electronics => Electronics => Topic started by: Keppnertj on February 16, 2009, 09:32:31 PM

Title: distance kill switch
Post by: Keppnertj on February 16, 2009, 09:32:31 PM

Hello to all,

First of I have really no idea what I am doing in regards to sensors.

I am trying to create an eight sensor kill switch of sorts

the poor excuse for an idea: :-\
What I would like to do, is that when one sensor detects a wall/object a 3v cut off switch for that motion activates.
For example: the arm is about to hit a glass vase the sensor detects it, sends the signel to a display monitor (showing a fairly accurate distance). then sends 3v to a relay to turn of that movement.

My problem is i have no idea how to put this to gether and make a prototype, nore what i will need to acomplish this.
Any help would be great.

Thank you for your time

Keppner

Title: Re: distance kill switch
Post by: SmAsH on February 16, 2009, 11:24:38 PM

well do you want it to avoid only expensive things like vases? if so this would be quite a hard feat to achieve

Title: Re: distance kill switch
Post by: Keppnertj on February 16, 2009, 11:50:19 PM

walls, vases, people, mounds of dirt, anything

Title: Re: distance kill switch
Post by: Keppnertj on February 17, 2009, 01:24:31 PM

after doing some reading, an IR sensor is not the best way to go for my outdoor use. Ultra sonic seems to be my other option.

My range that i am trying to cover is 3" to 15" give or take, mainly outdoor use in all weather situations. Also posibly in a very noisy enviroment

any recomendations?

Title: Re: distance kill switch
Post by: SmAsH on February 17, 2009, 01:33:04 PM

hey i was just thinking if you have a killswitch activate everytime it gets close to something wouldnt that get reaaaaly anoying?

Title: Re: distance kill switch
Post by: Keppnertj on February 17, 2009, 02:32:02 PM

Quote from: SmAsH on February 17, 2009, 01:33:04 PM

hey i was just thinking if you have a killswitch activate everytime it gets close to something wouldnt that get reaaaaly anoying?

not for my project.
i am trying to avoid damage to object and itself. i am building somthing kinda big

Title: Re: distance kill switch
Post by: HyperNerd on February 22, 2009, 03:15:27 AM

Are you using a microcontroller? If so, you could whip up something quick in code to poll a sonar sensor and stop movement if the distance is below a set threshold.

 -HyperNerd