Mechatronics - Building a Robot Work Cell Safety Logic Circuit PBL Project

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Jim Burnham (View Original)

Mechatronics - Building a Robot Work Cell Safety Logic Circuit PBL Project

Digital logic is integral to all computer and control systems. This project is designed to introduce students to Binary (base 2) number system, Digital and Analog, and Digital Logic, culminating in a lab and project where they build a robot work cell safety logic circuit. They will know how to count, convert, Add and Multiply in Binary. Students will be able to explain the difference between Analog and Digital logic. They will be able to discuss Analog and Digital systems and be able to identify examples of each. Students will learn about Digital Logic - AND, OR, INV, XOR, NAND, NOR. Finally, Students will be able to explain the need for a safe robot work cell, and explain how the different safety circuits work. They will understand the logic circuit and how different safety inputs are ranked in a safety lock out circuit. They will be able to explain this circuit signal priority, and why it is important to, for example, have an Emergency Stop signal immediately stop a robot Lesson #1: Students will understand the Binary (Base 2) Number system. They will know how to count in Binary. How to convert from Decimal 2 Binary. How to convert from Binary 2 Decimal. How to Add and Multiply in Binary. This lesson is the 1 of 4 in the Digital Logic Project and leads to Building a Digital Logic System. Lesson #2: Students will understand difference between Digital and Analog systems. As part of the lesson, students will have an opportunity to do some independent researcher on Analog and Digital systems. Lesson #3: Students learn about Digital Logic. AND, OR, INV, XOR, NAND, NOR. This lesson includes lecture and hands on activities to practice reading logical equations, mapping logic gate functions, and reading and writing truth tables. Then building circuits. Lesson #4: Students will learn what is included in a Robot work cell and explores the safety Logic circuit to keep a worker safe. Students will learn about is about the different safety switches and signals. Students will build a model and simulation of the Logic Tree to implement a robot work cell safety circuit. Students Will Know & Be Able To Do: Design a Logic Diagram to simulate and model the Emergency Stop, Gate open, and other features to keep Humans safe as they interact with a Robot in a Robot work cell. This project is brought to you by Jim Burnham (CTE) with support from the CTE Online curriculum leadership team and detailed coordination provided by the Course Team Lead Joshua Bradley.
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