Enhancing competencies in instrumentation and measurement through project-based learning: A case study of an automated car reversing system

Necessary in today’s engineering programs. The present study provides an example of how project-based learning (PBL) was implemented in the Instrumentation and Measurement course, MECH 2241, by developing an Automated Car Reversing System with Emergency Brake. In developing this project, students demonstrated their ability to utilize all the course outcomes related to sensors, actuators, signal conditioning, and performance evaluation of a system through the integration of sensing, signal conditioning, embedded programming, and control logic. Students utilized an Arduino Mega, an HC-SR04 ultrasonic sensor, a buzzer, a motor driver, and a DC motor to build a prototype that provided an audible warning and ultimately stopped the motor if an obstruction was found, within 20 centimeters. Experimental research demonstrated that the prototype, after calibration according to the 97.25% average accuracy (y = 0.0172x + 0.8377), achieved the course outcomes stated above. Additionally, a results-based questionnaire was administered to assess the students’ opinion of the PBL project, with 91.1% of the 45 respondents agreeing or strongly agreeing that they gained a better appreciation for the relationship between measurement theory and engineering practice through this hands-on projected. PBL has positively impacted the students’ technical knowledge of instrumentation and measurement and has increased their engagement in and relationship with higher education institutions.