Introduction To Robot Sensors Introduction to Sensors What

Introduction To Robot Sensors

Introduction to Sensors What sensor would I use as an emergency stop? What sensor would I use to sort red and blue balls? What sensor would I use move a specific distance? What sensor is used to measure the distance from an object? ©Carnegie Mellon University

What Sensor/s Do I Use? Smart Motor Bumper Switch Distance Sensor Gyro Sensor Color Sensor ©Carnegie Mellon University

What Sensor/s Do I Use? Smart Motor Bumper Switch Distance Sensor Gyro Sensor Color Sensor ©Carnegie Mellon University

Relational Operators Common Relational Operators equal to not equal greater less than to than or or equal to to == != > < >= <= What do relational operators do? ©Carnegie Mellon University

Decision Making and Cutoff Values What is a cutoff value? 68° A cutoff value is a predetermined value where a decision is made. If it’s over 68° I like to wear shorts! Can you think of other examples where cutoff values are used? ©Carnegie Mellon University

How do Robots Make Decisions? Robots make decisions by comparing values and deciding if they are true or false What is being compared here? What is the relational operator? What is the cutoff value? When would the robot react to this statement? ©Carnegie Mellon University

How do Robots Make Decisions? Robots make decisions by comparing values and deciding if they are true or false Using the answers to the questions below can we rewrite the statement in RED to make it more accurate? What is being compared here? What is the relational operator? What is the cutoff value? When would the robot act on this statement? ©Carnegie Mellon University

Conditional Statements Conditional statements compare a sensor’s actual sensor reading to a cutoff value using a relational operator. What value is the actual sensor reading? What value is the cutoff value? What is the relational operator? When will this robot react to this statement? ©Carnegie Mellon University

TRUE or FALSE ©Carnegie Mellon University

What Value/s Make the Condition TRUE? Sketch the number lines on a piece of paper to identify what values are TRUE ©Carnegie Mellon University

Your Job Describe how robots make decisions. In your description: • Describe what a Boolean expression is, • What relational operators are, • What sensors are, • And, what a cutoff value is. Provide at least one example of a how a robot used feedback from sensors to complete a multi-step task. Use the Robot Decision Making Self-Assessment Guide to evaluate your work. ©Carnegie Mellon University

Robot Decision Making Self Assessment Guide Read the project requirements on the left side and then rate how well you met the project requirements by answering the questions using true, almost true, and not true. Project Requirements Did you describe what a Boolean expression is? 2 True 1 0 Almost Not True Did you describe what a relational operator is? True Almost Not True Did you describe what a cutoff value is? True Almost Not True Did you describe how sensors work? True Almost Not True Did you provide at least one example of how a robot can use True Almost Not True feedback from sensors to solve a multi-step problem True Did your description use full sentences? True Almost Not True Your description does not contain any spelling errors? True Almost Not True Your description was well thought out and easy to read True Almost Not True Add all of the points in points column to calculate total points 15 -16 A 13 -14 B 12 -11 C 10 D Points ©Carnegie Mellon University