This week in robotics class, weve been learning about the ultrasonic sensor. Its actually a pretty cool sensor that works kind of like a bat. It sends a high pitched sound out and it tells how far away the object is by how long it takes for the sound to bounce off the object and return. We did two investigations. The first one was just the basics of the ultrasonic sensor and seeing if different objects affected the way the sensor detected them. We found that the readings are a little inaccurate with soft objects because the sound is absorbed. If the object is too thin, the sensor cant read it, and also if the object is round, it can have a little bit of an effect on the way the sound bounces back. In the second investigation, we found out what the field of view of the sensor is. In this experiment, we put a robot on the line and moved around a can and marked the outline of where the sensor detected the object. This was useful to know the information but we had no way to peel up the floor and keep it in our notebooks so we made a scale model which fit on a piece of paper. The scale for the model to the real life thing was 1:5. My results were a little bit different than the expected results probably because there was something wrong with my sensor. I have included pictures of what it sopossed to look like (Hyoungmin's results in real life) and my results on the scale model.
No comments:
Post a Comment