Counting LEDS

[Damien129]

Hey Guys,

I am trying to find help with vision builder, what are the steps i need to do the following any suggestions helpful. I want to check that

1) at 50V one LED is on the other 3 are off

2) at 120V two LEDs are on the other 2 are off

3)at 200V 3 LEDS are on the fourth LED is off etc.

Thanks guys still finding my way with this.

Damien

[AdnanZ]

What images are you looking at; is it possible for you to post them? Will these images be on a conveyor system or stationary in one place? Also, what have you implemeneted so far?

[Damien129]

The images are on a conveyor system,firstly i want to identify the image then decide which test to perform, by applying 230 volts etc I want an LED to light up.So far i have implemented character recognition,and symbol recognition in vision builder. I was thinking perhaps of using the pixel percentage to convert to a voltage value? I have only started using vision bulder this week so any advice greatly appreciated. At the moment when the LEDs light up the value is given in the display.But i am unsure how to use that value in my program. I instead want to apply step voltages and check that the particular LEDs are on and the others are off.

Damien

[toto69]

Hi,

Define some ROI around each LEDs (they can be relative to a previously found feature), then use an intensity or color measurement to define if each LED is on or not.

Then you should be able with logical function to know what voltage it is.

Hope this helps

[Damien129]

Hey thanks for the reply, I implemented the detects objects tool as it counts the number of objects found by the pixel count. So i can pick up the LEDs which is one part, with the logic aspect I assume thats with the calculator tool, however it would be good to get a voltage reading from the numberof  LEDs lighting but its the inverse I am looking for is it possible to apply the voltage and expect to find say 2 LEDS on and  the others off thats what I am aiming toward?? Is that possible in vision builder? thanks

Damien