EG1003: Introduction to Engineering and Design Sensors.

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Presentation transcript:

EG1003: Introduction to Engineering and Design Sensors

Overview  Objective  Background  Materials  Procedure  Report / Presentation  Closing

Objective  Design sensor programs  Mindstorms: Use sensors to stop a motor when a red ball is detected  Apply sensors to Semester-Long Design Projects

Concept : Control Systems  Control system  System created to read and analyze data  Use analyzed data for appropriate action  Examples:  Thermal controls  Lighting systems  Alarm systems  Motion sensors

Concept: Sensors Sensors  Read data from test environment  Data converted to digital format for computer Some sensor types:  Light  Temperature  Ultrasonic  Touch Sensors connect to different control devices:  Lego sensors -> NXT/EV3  Thermocouple -> DAC -> PC

Materials Mindstorms sensor program  NXT/EV3  Test assembly  Computer with Mindstorms LabVIEW sensor program  Computer with LabVIEW + DAC  Thermocouple

Procedure: Rotation Sensor  Write a program that moves the robot forward for 3 seconds  Add a code that reads the number of rotations during the 3 seconds  Write a program that displaying the number of rotations, but stops robot after 3 rotations

Procedure: Ultrasonic Sensor  If the sensor detects a distance greater than 40 in, a happy face should appear, and for a distance of less than 40 in, a sad face should appear  If the sensors detect a distance less than 40 in but greater than 30 in, a caution sign should appear. But for a distance less than 40 in but greater than 30 in, a sad face should appear

Procedure: Touch Sensor  Write a program in which your robot would move when the touch sensor is pressed, and would stop when the touch sensor was released

Procedure: Light Sensor  Write a program for obtaining the light intensity and displaying it on the NXT's screen

Assignment: Report/Presentation  No report for this lab  No Presentation for this lab  Milestone due next recitation

Closing  Have all lab notes signed by TA  Each team member should have turn using software  Return all unused materials to TA