Designing and Packaging a Distance-Sensing Product
An example of a Sunfounder ultrasonic device that may be used in a variety of programming applications.
Students begin by following instructions to connect a Sunfounder Ultrasonic Sensor and an Arduino Microcontroller. Once they have them set up, students calibrate the sensor and practice using it. Students are then given an engineering design problem: to build a product that will use the ultrasonic sensors for a purpose that they all specify. Students will have to work together to design and test their product, and ultimately present it to their classmates.
Civil engineers need to have strategies for measuring distances that do not require the use of hand measurement, such as long tape measures. Instead of solid tools, they use sensing systems to determine distance. One of these sensing systems uses light (through a beam or laser) or sound (high frequency radio waves) to measure distance. Electrical and computer engineers work to make improvements in the use of sound energy to assist in more efficient and accurate surveying tools for civil engineers. A type of testing called “nondestructive evaluation testing” uses distance sensors to help identify depths at which electrical lines are buried underground. They also use distance sensors to identify the location and depth of defects in materials. One such laboratory has created sensing systems that detect defects and obstructions at certain distances within materials. The use of ultrasonic devices also provide opportunities to support product sustainability.
After this activity, students should be able to:
- Apply knowledge about ultrasonic sensors to find a need/use for measuring distances between 20 cm and 700 cm accurately and efficiently.
- Design a package that will house the sensor and microcontroller safely while allowing access to connections.
- Present and communicate ideas and demonstrate use of product to their peers.