Powerpoint Templates Page 1 Powerpoint Templates Android Multi-Meter (AMM) Senior Design I Final Presentation

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Android Multi-Meter (AMM)

Senior Design I

Final Presentation


Page 2

AMM Team Members

Team LeaderElectrical Engineer

• Design• Hardware• Analog Readings

Computer Engineer

• Website• App Programming• PIC Programming

Adviser: Dr. Sherif Abdelwahed

Chris Parker

Daniel Hosler

Justin Taylor

Computer Engineer

• Website• App Programming• PIC Programming


Page 3

Outline

• Problem• Solution•System Overview• Constraints

• Technical• Practical

• Prototype• Evaluation• Future Work•Questions


Page 4

Section 1

Problemand

Solution


Page 5

Problem

Most multimeters do not give you the ability of remote viewing. None of these multimeters enable Android devices as the screen.

Our market is users with Android devices with a job or hobby that involves electronics.


Page 6

Solution

The AMM will allow users to take electrical readings from a distance that may either be more convenient or safer.

The AMM will take readings in several ranges of:

- Voltage - Capacitance

- Resistance

- Current


Page 7

What is the AMM?

• The user will use leads to take a reading of the electrical system of interest

• The reading will be read into the microprocessor and sent to the wireless module

• The wireless module will then send the information to the Android application which displays the result on the phone

AMM


Page 8

System Overview

Power Supply

BluetoothRN-41

Leads

Pic24

AndroidApplication

Max134


Page 9

Section 2

Technical and PracticalConstraints


Page 10

Technical Constraints

Name Description

Measurement

AC Voltage, AC Current, DC Voltage, DC Current, Resistance, Diode Check, Capacitance with ±2% of Range and ± 2 Counts

Wireless Comm. 20’ minimum range

Battery Life 10 hours

Data LoggingMaximum Sample Rate: 20 Hz On Board Memory: 32kB Flash

DisplayDisplay data with needed prefix and decimal places


Page 11

Practical Constraints

The AMM application software will be regularly updated

• Compatible for future devices

• Longevity of usefulness

• Fix bugs

• Add functionality

Sustainability and Maintenance


Page 12

Practical Constraints

Economic and Cost

The AMM will use cheaper hardware components than competitors.

• The AMM will rely on the users personal display and not provide its own

• The AMM will use an Android application that is less expensive for development


Page 13

Prototype


Page 14

Prototype

MAX134 DMM Chip


Page 15

Prototype

RMS to DCConverter


Page 16

Prototype

PIC24HJ128GP502μController


Page 17

Prototype

RN-41 Blue-Tooth Module


Page 18

Prototype

Capacitance Test Circuit


Page 19

Evaluation


Page 20

Evaluation

Software


Page 21

Coding

Writing to the MAX registers


Page 22

Coding

Reading to the MAX registers


Page 23

Testing

Reading from the MAX 134


Page 24

Testing

Transmitting MAX 134 Data


Page 25

Testing

Debugging with RealTerm


Page 26

Software

Android Application


Page 27

Software

Android Application


Page 28

Testing

Sending a Command


Page 29

Evaluation

Hardware


Page 30

DC Voltage

DC Voltage Test Circuit


Page 31

DC Voltage

DC Voltage Test Data

Range Error0.4000V 100.5 mV 100.1 mV -0.4%0.4000V -115.5 mV -114.5 mV -0.9%4.000V 1.000 V 0.994 V -0.6%4.000V -1.000 V -1.013 V 1.3%40.00V 10.03 V 10.11 V 0.8%40.00V -10.03 V -9.98 V -0.5%300.0V 124.3 V 126.1 V 1.4%300.0V -124.3 V -124.1 V -0.2%

Expected Value Measured Value


Page 32

DC Current

DC Current Test Circuit


Page 33

DC Current

DC Current Test Data

Range Error1.000A 204.7 mA 204.3 mA -0.20%



Page 34

AC Voltage

AC Voltage Test Circuit


Page 35

AC Voltage

AC Voltage Test Data

Range Error0.4000V 211.6 mV 86.7 mV -59.0%4.000V 2.824 V 2.58 V -8.6%40.00V 20.25 V 20.4 V 0.7%300.0V 149.6 V 149.9 V 0.2%



Page 36

AC Current

AC Current Test Circuit


Page 37

AC Current

AC Current Test Data

Range Error1.000A 190.1 mA 182 mA -4.26%



Page 38

Resistance

Resistance Test Circuit


Page 39

Resistance

Resistance Test Data

Range Error400.0Ω 100.0 Ω 101.1 Ω 1.10%4.000kΩ 0.997 kΩ 0.988 kΩ -0.90%40.00kΩ 10.03 kΩ 9.88 kΩ -1.50%400.0kΩ 100.6 kΩ 100.8 kΩ 0.20%4.000MΩ 1.019 MΩ 1.015 MΩ -0.39%



Page 40

Capacitance

Capacitance Test Circuit


Page 41

Capacitance

Capacitance Test Data

Error

47.7 µF 47.6 µF -0.21%



Page 42

Range

Sustained Connection Range

60 Feet


Page 43

Battery

Battery Life

Normal Operation - 15 Hours

Idle Conditions - 35 Hours


Page 44

Future Work

• Correct AC measurement errors

• Improve capacitance resolution

• Implement auto range features

• Final PCB Design

• Packaging


Page 45

Android Multi-Meter (AMM)

Questions?

• Senior Design I• Final Presentation

Documents

Powerpoint Templates Page 1 Powerpoint Templates Android Multi-Meter (AMM) Senior Design I Final Presentation