Military service personnel use robots to do tasks that might be dangerous to humans. One common example is working with explosives such as landmines. A robot is used to venture out into a potential minefield and locate a landmine, allowing the soldier to disarm or detonate it from a safe distance. Landmine detection is becoming increasingly important because, sadly, we live in a world where there have been many wars and thousands of landmines have been hidden. Many of these mines remain long after the war is over. In this project, your challenge is to build a sensor-controlled robot to locate a hidden “landmine” as represented by a small magnet.
In this project, you will design and build a mobile robot to replicate the behavior of a military device searching for landmines. You will use small disc magnets hidden under a cloth or large sheet of paper to represent the buried landmines. Your challenge is to locate and pinpoint the exact location of these “mines.” Your robot should be capable of searching a wide area, in the neighborhood of a 4" wide and 3' long strip, with a Vernier Magnetic Field Sensor. Once the sensor detects a magnet, the robot should stop with the tip of the sensor directly above the hidden magnet (the white dot on the sensor should be facing downward) and the robot should sound an auditory indicator. Your robot is only required to find one magnet at a time, and you can set the initial starting position. You can manually restart and reposition your robot to begin a search for additional magnets.
You are strongly encouraged to use the Engineering Design Method and your creative imagination when tackling this challenge. The Engineering Design Method will help you develop a successful working robot. A little planning will save you time and frustration, especially when working on more complicated projects.
Sensors and Equipment
This project features the following Vernier sensors and equipment.