ECE ROBOTICS JOURNEY

Team #3: Rashied Bennett, Tom Bergen, Hugo Caceres, Joseph Chang

“The Group”

Team Members: Rashied, Tom, Hugo, Joe

Group Number: #3

Sensor Characterization A sensor is a technological device

that measures physical quantities and translates them into precise measurements, in the form of signals, which can be read and analyzed.

The linearity of a sensor is an expression of the extent to which the actual measured curve of a sensor differs from the ideal curve. Linearity shows the constant relationship between a measured physical quantity and the data output that is yielded by the sensor.

Sensor Results

0 2 4 6 8 10 12 140

50

100

150

200

250

300

350Sonar Data

Distance (in)

Sona

r Rea

ding

(mm

)

0 2 4 6 8 10 120

50

100

150

200

250Light Sensor Data

Distance (in)

Ligh

t Sen

sor R

eadi

ng

Sonar data and graph shows linearity.

Sonar is reliable because it is linear.

This means the distance is proportional to the sensor reading

Light sensor data and graph also show linearity.

Light reliable like sonar due to proportionality

Rangefinder was not linear

Robot Maze Navigation Robot must navigate through maze from

beginning to end.

Robot can be pre-programmed to go through left, left, right

Bonus Objectives:

• Make Robot Self Deciding

• Have robot correct itself using light sensors and black lines

Robot made it through the maze

Robot was self deciding

Failed to implement light sensor correction

○ Light sensor dominated optical rangefinders

Robot Results

Instrumentation Lab Objective: Use oscilloscope to

measure frequency, period, etc…

Make two graphs:○ Sinusoidal○ Triangle

Difference between AC/DC

Matlab program solving for variables

Elevator Project Objective: Make elevator able to move two floors

Bonus Objective: Make elevator able to move three floors.

Small elevator for maximum lift

Circuits Lab Multi-meter measures current of circuit

Learned about resistors in series/parallel

Learned about Diodes

Materials:○ Breadboard○ Resistors○ Diodes

PSpice Program that allows simulation of circuits

Can make complex circuits

Very useful tool to use

Knowledge good for future academic and professional careers

PSpice Results

Matlab HW Circuit resembles unbalanced Wheatstone bridge

Use Mesh Current Method

Kirchhoff’s Voltage Law : 300 I1 + 100 I2 + 150 I3 = 0 100 I1 + 650 I2 – 300 I3 = 0 150 I1 - 300 I2 + 450 I3 = 24

Matlab HW Results

2400

III

450300150300650100150100300

3

2

1

I1 = -0.0938

I2 = .0772

I3 = .1361

Conclusion Team work necessary skill

Hardware and Software are dependent on one another

Prevalence of sensors

Circuit Theory PSpice very good