After reading this post the reader will learn about the IR sensor, working of the IR sensors and the simulation of the IR sensor in Proteus. This post is oriented around the IR sensor, its working and the simulation in Proteus. In the previous posts I have discussed the simulation of the other important sensors in Proteus. Viewed 36k times.In this post I will discuss about the IR sensor and its simulation in Proteus. The best answers are voted up and rise to the top. If its noisy, hang a cap to ground on the base of the transistor to act as a noise filter 0. With the sensor the OP stated they have, now the digital signal to the micro will be high when metal is detected, low when not. If its a short connection and not too noisy an environment, just use a small signal NPN transistor with a base resistor 10K should work nicely and a pullup to 5V on the collector and run the collector to your micro input. Those drawings are correct but they sure are confusing! And why the optocoupler? I don't see the need for that here. Consequently they show the load for the NPN between power and the black wire since the black wire goes to ground when the sensor is active and they show the load between the black wire and ground for the PNP sensor because it connects the load to power when active. Below is something I would expect to find for your sensor but there seems to be contradictions as to what the three wires do. Your drawing in your question is debatable too. I would also suggest that if it is an NPN output it will produce a "contact" closure to the most negative wire.
Brown appears to be positive supply voltage with black as ground although, on another document it had blue and black reversed. I did a quick Google and I think you have the colours of your wires wrong. I configured the Arduino with a pull-up on the input port. The 12V supply that powers the proximity detectors does not need to share a ground and probably should not share a ground with the microcontroller. You can get such optoisolators 4 to a package, so only two would be required. Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.
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