Project Report

Alcohol Detecting System

EENG-491-w02

Advisor: Tao Zhang

Member: Haotian Kong, Rui Xue, And Ji Dai

May 13, 2013

Table of Contents

1. Introduction ………………………………………………… 3-4

1.1 Background ………………………………………………... 3

1.2 Motivation ………………………………………………………...… 3

1.3 Objective ……………………………………………………………… 3

2. Design Approach ………………………………………….…. 4-5

3. Key factors on the research ………………………….…………...5-9

3.1 Influence of alcohol on human ……………………..………….....5-6

3.2 Alcohol Concentration change in weight…………………………..6-8

3.3 The time after one drank ……………….………………….…….8

3.4 Law of different countries ………………………….…………………..9

4. Hardware ……………………………………………………...…9-14

4.1 MQ3-sensor ………..………………………….…………………….....9-11

4.2 Arduino Mega …………………………………………………….12-13

4.3 BlueSmirf Silver Module ………………………….…………………13-14

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5. Software……………………………….…………..……………15-18

5.1 Software part—Arduino software ……..……………….………………….15-16

5.2 Android Programming ……………………………..……………….…..16-18

6. Project Demonstration …………………………………………..19-20

7. Future Plan ………………………………………………...20-22

8. Cost …………………………………………………………22

9. Summary …………………………………………………....22

10.References and Attachments ………………………………….…23-29

1. INTRODUCTION

1.1 Background

Drunk driving is a very dangerous behavior. People will become slow in reacting and

can’t control their actions. Drunk drivers’ aren’t able to deal with the emergency

situations when they are driving. The investigation done by the World Health

Organization in 2008 shows that about 50%-60% of traffic accidents are related to

drunk driving. The drunk driving has been listed as the main reason for the fatal car

accident.

1.2 Motivation

These years, the cases of traffic accident caused by drunk driving have increased

rapidly. More and more people have realized that the drunk driving does great harm to

public security. It’s time to develop a kind of system which can stop the drunk driving

effectively. As this kind of system hasn’t been popularized, we try to develop this

system which is available on every car. This system won’t cost much, but it will bring

much for it concentrates on human’s safety. This system has a preventative effect

which can stop accidents from the beginning.

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1.3 Objective

We want to design a kind of system which can detect the alcohol concentration in the

cars to prevent the behavior of drunk driving. The system consists of these parts:

1. Sensor Part--used to detect the concentration of alcohol in the air and send the

concentration in the form of voltage signals to the following part.

2. Processing Part—used to receive the voltage signals and process the signal to

analog signals that can be standard for the concentration of alcohol.

3. Display Part—used to get the processed signal and show the data to users in the

form of diagrams.

The sensor will be fixed near the driver’s seat. The driver should breath to the system

before he (she) starting the car. If the concentration of alcohol detected is below the

allowable standard, the car can be started normally. If the concentration of alcohol is

above the allowable standard, the system will send alarm to the driver. The

concentration of the alcohol will be showed in diagrams which can be seen on the

driver’s cellphone.

The system should be safe, sensitive, accurate, convenient and cheap. This kind

of system can be fixed on every car to ensure the driver’s driving safety and can

protect the passengers’ walking safety.

2. DESIGN APPROACH

The following block diagram shows the sketch how we design the system.

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Figure 1.flow chart of Alcohol detecting system

The flow chart above shows the main structure of the alcohol detecting system. From

this chart we can briefly know the components we have used and how to connect

them. Here is the introduction of the usage of each component:

1. MQ-3 alcohol sensor: This sensor can detect the value of the alcohol

concentration in the air and transform this value to voltage signals. The sensor

should be powered and the pin on the sensor which is used to send out the voltage

signals should be connected with the analog-in pin on the Arduino board. 

2. Arduino board: We chooses the Arduino Mega ADK as the developing board for

it has more pins and has more advanced chip with more flash memory which can

reach almost all of our requirements in the research period. With the help of

Arduino board, we can transform the uncountable voltage signals to countable

analog signals which range from 0 to 1023. The operating voltage is 5V. So the

real voltage of the input voltage is:  (Output analog value/1024)*5V.  After the

Arduino board has completed the data processing part, it would send the signals to

the cellphone with the help of Bluetooth module. 

3. Bluetooth module: Bluetooth module can help the system reach wireless

connection. This means we needn't take pains to try to connect the cellphone with

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Arduino board by cockamamie wires. This design can let the system become more

humanized.

4. Android phone: Smart phone is a wide platform for developers to design

applications. We have designed an application that can let the value of alcohol

concentration showed in visual diagrams instead of analog signals. And because

the cellphone is a good medium that can contact with others by messages or the

Internet, the statistics can be shared easily.

3. KEY FACTORS ON THE RESEARCH

—Blood Alcohol Concentration

3.1 Influence of alcohol on human

Alcohol will influence human’s behavior. One drinks more, one would be dizzier.

Terrible traffic would occur because of drunk driving. From the chart blows, we can

see the influence of alcohol on human behavior in details.

0.02 — 0.03 BAC: No loss of coordination, slight euphoria and loss of shyness.

Depressant effects are not apparent. Mildly relaxed and maybe a little lightheaded.

0.04 — 0.06 BAC: Feeling of well-being, relaxation, lower inhibitions, sensation of

warmth. Euphoria. Some minor impairment of reasoning and memory, lowering of

caution. Your behavior may become exaggerated and emotions intensified (Good

emotions are better, bad emotions are worse)

0.07 — 0.09 BAC: Slight impairment of balance, speech, vision, reaction time, and

hearing. Euphoria. Judgment and self-control are reduced, and caution, reason and

memory are impaired (in some*states .08 is legally impaired and it is illegal to drive

at this level). You will probably believe that you are functioning better than you really

are. 

0.10 — 0.125 BAC: Significant impairment of motor coordination and loss of good

judgment. Speech may be slurred; balance, vision, reaction time and hearing will be

impaired. Euphoria. It is illegal to operate a motor vehicle at this level of intoxication

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in all states.

0.13 — 0.15 BAC: Gross motor impairment and lack of physical control. Blurred

vision and major loss of balance. Euphoria is reduced and dysphoria is beginning to

appear. Judgment and perception are severely impaired.

0.16 — 0.19 BAC: Dysphoria predominates, nausea may appear. The drinker has the

appearance of a "sloppy drunk."

0.20 BAC: Feeling dazed/confused or otherwise disoriented. May need help to

stand/walk. If you injure yourself you may not feel the pain. Some people have nausea

and vomiting at this level. The gag reflex is impaired and you can choke if you do

vomit. Blackouts are likely at this level so you may not remember what has happened.

0.25 BAC: All mental, physical and sensory functions are severely impaired.

Increasing risk of asphyxiation from choking on vomit will seriously injure you by

falling or other accidents.

0.30 BAC: STUPOR. You have little comprehension of where you are. You may pass

out suddenly and be difficult to awaken.

0.35 BAC: Coma is possible. This is the level of surgical anesthesia.

0.40 BAC and up: Onset of coma, and possible death due to respiratory arrest.

In sum, alcohol will negatively affect your behavior. The more you drink, you will be

more easy to be wild.

3.2 Alcohol Concentration change in weight

There are far variables involved to accurately estimate or predict a person’s BAC

simply based on gender. The data is so important for us to build a accurate project

design.

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Figure 17.Concentration of alcohol vs. consume number and weight-men

Figure 18.Concentration of alcohol vs. consume number and weight-women

The drink chart displayed above provides a rough estimate of a person's blood

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alcohol level (BAC). it is based on the number of drinks consumed and the person's

weight. The red number in men chart shows you cannot drive in such a concentration.

The purple number in women chart means you have out of control and driving skills

have been significantly affected. The bigger you are, the more difficult you will get

drunk. Our design is open to all people, so we consider the weight into account.

3.3 The time after one drank

As the following figure19, it’s also an important factor for calculating the

concentration of alcohol in one’s body. From the chart above we find the relationship

versus the weight and the consumed number. One will get lower concentration of

alcohol as time passes, which will affect the measurement of our system. Based on the

chart, we calculate the relationship between the concentrations of alcohol and the time

after you drank.

Figure 19. Hours to zero BAC for men and women

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3.4 Law of different countries

Figure 20. Different standard among different countries

The standard of legitimate centration of alcohol before driving is different among

different countries. If one is from the USA and one is from China, they will under

different limitation.so it’s also an important factor. After our calculation, we find, for

Chinese, if the display is larger than 75, our system will make an alarm.(for

USA:140,for Canada:104)

4. HARDWARE

4.1 MQ3-sensor

4.1.1 Introduction of MQ3

In this sensor, there’s a little white tube in the middle of sensor. Basically, this tube is

a heating system that is made of aluminum oxide and tin dioxide and inside of it there

are heater coils, which practically produce the heat. And you can also find 6 pins. 2

pins that I called Pin H are connected to the heater coils and the other ones are

connected to the tube.

The core system is the cube. As you can see in this cross-sectional view, basically,

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it is an Alumina tube cover by SnO2, which is tin dioxide. And between them there is

an Aurum electrode, the black one. And also you can see how the wires are connected.

Basically, the alumina tube and the coils are the heating system, the yellow, brown

parts and the coils in the figure2

Figure 2. Inside the sensor

The MQ-3 is an alcohol gas sensor that is available for about $5 from sparkfun.

It’s easy to use and has sparked the imagination of anyone who has dreamed of

building their own Breathalyzer device for measuring the amount of alcohol in the

human body. We got five MQ-3 sensors a couple of months ago and have spent a lot

of time trying to figure out how to do this. After lots of “data gathering”, we found

that this task is not as easy as it sounds.

4.1.2 Circuit of sensor connection of MQ3

As shown in Figure3, The

other part of the circuit is

essentially a variable

resistor inside the sensor.

The resistance across an A

pins and a B pin varies

depending on how much

alcohol is in the air in the

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sensor. The more alcohol, the lower the resistance is. We measure alcohol in the

breath by measuring this resistance. Instead of measuring the resistance directly, we

measure the voltage level at the point between the sensor and a load resistor.

First, we use 5v. And as you can see one of H pins goes to the power and the

other one is connected to the ground. And the pin A is connected between the power

and the pin H and the pin B is goes to the microcontroller. Also between the ground

and the Arduino, you need the resistor. Before you connect the resistor if you use the

pot, you can tune the resistor for getting more accurate values. In the datasheet they

say you can used 100k om to 470k om. So we use 220k om in our circuit.

It will react that depending on the environment, it gives us little bit of different values.

But in our experiment, it gives me 200 as the lowest value and 700 as the highest

value. And when it detects the alcohol in the air, actually it is pretty sensitive, the

value gets higher very quickly but you have to wait for about 10 seconds to reset it. So

that means getting values is fast. And the sensitivity of this sensor is affected by time

span. When I used three different sensors, the range of value was a little smaller than

the new one's. But it doesn’t affect the whole experiment.

4.1.3 Reaction Theory of MQ3

SnO2 ceramics will become the semi - conductor, so there are more movable

electrons, which means that it is ready to make more current flow.

Then, when the alcohol molecules in the air meet the electrode that is between

alumina and tin dioxide, ethanol burns into acetic acid then more current is produced.

So the more alcohol molecules there are, the more current we will get. Because of this

current change, we get the different values from the sensor.

4.1.4 Detail of Sensor Connection

As the figure 4 shown, We put the H (left)

connect the 5.0V and H (right) to the ground

(GND). We can choose either A or B as one

of the analogin pin to connect the Arduino

board. And use another one, B or A, just

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opposite to the former one, we can only use 4 of 6 pins in the project.

4.2 Arduino Board

4.2.1 Introduction of Arduino mega

Arduino Mega2560 microcontroller board is an easy-to-use development board based

on the Atmel ATmega2560 MCU. The ATmega2560 has 256 KB of flash memory for

storing code (of which 8 KB is used for the bootloader), 8 KB of SRAM, and 4 KB of

EEPROM. The Arduino Mega2560 microcontroller board has 54 digital input/output

pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs

(hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack,

an ICSP header, and a reset button. The Arduino Mega2560 contains everything

needed to support the MCU. Simply connect it to a computer with a USB cable or

power it with a AC-to-DC adapter or battery to get started. This Arduino development

board is compatible with most shields designed for the Arduino Duemilanove or

Diecimila. The Arduino Mega2560 differs from all preceding boards in that it does

not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega8U2

programmed as a USB-to-serial converter. The Arduino MCU board includes a

number of facilities for communicating with a computer, another Arduino, or other

MCUs.

4.2.2 Sampling rate in the Design

Delay() is a key function to arrange the frequency of reading in the while loop.

Once the loop starts, the analogRead() function will sample the data from sensor and

by delay(100) function, delay 100ms, then next sample data comes in.

In our project, we use the analogread() in the

arduino, the Arduino board contains a 16 channel

(8 channels on the Mini and Nano, 16 on the

Mega), 10-bit analog to digital converter. It will

map input voltages between 0 and 5 volts into

integer values between 0 and 1023. It gives us

readings of: 5 volts / 1024 units or, .0049 volts

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(4.9 mV) per unit. The input range and resolution can be changed using

analogReference().

It takes about 100 microseconds (0.0001 s) to read an analog input, so the

maximum reading rate is about 10,000 times a second. It returns int (0 to 1023).

4.3 Bluetooth Silver Module

The baud rate is quite important to be set in Arduino code part. At the first, we use the

blue tooth module to test, the baud rate we

set is 9600, that is suitable for the

connection. But when using Bluetooth silver

module, the baud rate should be 115200 .

Here’s the Connection the bluesmirf silver

Bluetooth, as shown in the figure 6. There’re

6 pins in the Bluetooth Silver Module, we use the middle of them, the sequence is

VCC, GND, TX and RX, TX and RX means the transmit port and receive port which

should be connect to the receive port and transmit port in the arduino board.

As the following figure 7 and figure 8, BlueSmirf Bluetooth Module should

have 115200 baud rate which should modify before we use it. When the BlueSmirf

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Bluetooth Module paired with your device, the green light is on. The picture Figure 7,

shows the baud rate in the arduino code, the figure 8, shows the reading board in the

computer.

5. Software part

5.1 setting of environment

5.1.1 Arduino software

It is the most complicated part of this experiment. We get the detailed tutorial from

http://arduino.cc/en/main/software. There’re four kinds of operating system for you to

choose. Basically, the software helps us input the code into the arduino board, which

shows the corresponding alcohol reading result of MQ3 (sensor).

As shown in figure 9, after placing the folder into the libraries folder, we should

be able to access all the amarino files through the arduino programming environment

and then open the code in arduino board.

Figure 9: SensorGraph code in Arduino

5.1.2 Installing Amarino

We download the following

applications on your mobile phone

1.  Amarino – Android Application- to

be installed on phone.

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2. Amarino Plug-in Bundle- to be installed on phone.

3. Amarino Library- To be kept in Java Project

5.1.3 Eclipse and ADT

It is the most complicated part of this experiment. The basic idea is to Install the

Eclipse first (follow the system requirements), then install the android SDK, then

install ADT plugin for Eclipse IDE. Codes still need to be changed to realize the

function and is shown in the end of the manual.

5.2 Android Part

5.2.1 Structure of Android programming

Android programming based on the Java SE platform, we design the project as seven

parts, Alarm, Amarino, AmarinoIntent, Country, GraphView, SensorGraph and

StartingPart.

Figure 11. The brief structure in Android programming

The Country.java and StartingPart.java, we set these activities to let the user

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choose the country they have to fit the different criteria the application has. As you

can see in the following picture:

When you want to arrange the sequences of your

activities (it’s the name of android interface), it should be

set in the AndroidManifest.xml, that’s the different

between Java and Android.

And In order to let the country.java become the first,

we should press the following code, let the <intent-

filter></intent-filter>inside the first activity we want to

show to the user.

Then the GraphView.java and SensorGraph.java shows the actual diagram can show

to the user,

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Finally, we set the criteria as 500 to alarm because it can show you the brief

change in each time. Once the reading touches 500, it will alarm at once.

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Then open the apk file and install the application “alcohol detection” into smart

phone. We use the Samsung S1 GT-I9100 android version is 4.2.2, processor is

ARmv7 Processor rev 1(v71).

5.2.2 Problems in software design

1. In the code part, in order to make the activity act like a window, not extend the

whole screen, we can set the androidManifest.xml as /theme.Dialog.

Figure 15. Theme.Dialog in xml file

2. When we use the application in virtual smart phone, it may show us the error

process, as shown in the figure 16.

3. We should check the androidManifest.xml to make sure that each activity has

settled already.

4. Layout is a very important part in

android design, the label and

arrangement of buttons and texts are all

depend on these file, when we set the

function in activity, we should set the

corresponding part in Layout, and then,

it will yield the ID in the “R.class” in

Gen fold. And during the programming,

R.class will disappear automatically,

then we found if you have unlogical

code in layout.xml, it can be done.

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6. PROJECT DEMONSTRATION

Figure 21. Alcohol detecting system

From the demonstration we can see that our alcohol detecting system has the

following advantages:

1. The materials are cheap and are easy to acquire. The cost of this system is one of

the important factors we are considering. Because if we want to popularize this

system, we should make it as cheap as possible so that every driver can afford of

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this useful system.

2. It doesn’t some large measuring instruments which mean it can be made small

enough and can be put into production without any challenging technological

problems.

3. We used the Bluetooth module. It can realize the wireless communication. It is a

significant design because we can use the smart phone to receive the signals and

do further designs.

4. Smart phone is a wide platform for us to design more humanized applications to

fulfill user’s requirements. In our system, we have transformed the abstract analog

signals to visual diagrams. And the smart phone will send alarm to users when the

alcohol concentration reaches a certain value.

5. We can also share the value of alcohol concentration from the drivers to their

relatives, friends or the police. Because the data can be showed on cellphones, we

can send the date by the Internet or message.

7. FUTURE PLAN

These are what we have done up to now. In the future, we will:

7.1 Try to reduce the cost of the system when it can be made as a product.

This is a system that can be used in everyday life for everyone. So users must be

concerned with the cost of the alcohol detection system. The cheaper it is, the more

chance it will be popularized. Because our system is in the period of experiment and

design, the cost may be higher than the modified products. We are using Arduino

Mega ADK as the developing board. It is expensive because it is appropriate for us to

learn how to use developing board and is convenient to connect the wires with the

sensor and the Bluetooth module. In future, we can design a printed circuit board to

simplify the circuit and use a small chip instead of the developing board. Based on the

technology of manufacture nowadays, the total cost of a finished product will be less

than $20. This price is low enough which almost every driver can afford of this

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system.

7.2 Make it small enough and more convenient to use.

The smaller and more convenient the

alcohol detection system is, the more likely

drivers will accept it. Up to now we have

come up with several options to place it on

the car:

1. The first option is that we can set it on

the keychain, the system is as small as a

key and the driver can blow it directly.

So the drivers won’t take pains to refit the car.

2. Another option is that we can put a cable near the driver’s seat and the cable is

connected with the ignition of the car. This means the alcohol detection system

can be another key to the car. The driver should blow to the system before he/she

start the car. If the value of the alcohol concentration is above a certain value, the

system will stop the car starting. So a drunk driver won’t be able to start the car

which will prevent the behavior of drunk driving. It is not only safe to the driver,

but can ensure the passengers won’t be hit because of the driver’s drunk driving.

Figure 22. Connect with car ignition

3. We can also design it as a plug-in unit. It can be plugged with a cellphone or on

the console of the car. This design can ensure a tiny size of the system. And the

system can be used as an USB stick that means the data can be stored in it and we

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can plug it with relevant terminal to do more calculations.

Figure 23. Plug the iphone

4. Fixing the alcohol detection system on the driver’s seat is also a wise choice.

Because the sensor near the seat can detect the driver’s breathe alcohol

concentration easily and the driver won’t take pains to blow to any system

intentionally.

Figure 24. Fix on the back

7.3 Improve its efficiency and accuracy to let it become more reliable.

Whether the system is accurate and sensitive can affect whether the users are satisfied

with it. Our system should tell the drivers the real alcohol concentration and whether

they can control their driving skill after they have drunk some wines. Our system

shouldn’t bring trouble to the users. Such as the system sends alarm continually and

can’t be stopped.

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7.4 Raise its popularity by advertisements so that it can be used on every car.

It is no doubt that if a product is wanted to be popularized, it should be advertised

well. Our system is focus on detecting the driver’s alcohol concentration which can be

used on everyday life. So we should tell drivers how dangerous the drunk driving will

be and how to avoid this by fixing a tiny, cheap and accurate system. We are always

thinking about how to construct a safe driving environment to drivers.

8. COST

Figure 25. Total cost for project

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9. SUMMARY

In this project, the most important thing is that the sensor can detect all the conditions

when driver has drunk already no matter how much they did. Secondly, connecting to

the car ignition is a proper way to force driver do so every time they want to drive.

Thirdly, user can get the data on their android phone in time when they do breathing

test every time.

We predict that alcohol detecting system can use in all cars to serve for the people

who need.

10. REFERENCES AND ATTACHMENT

1. "Sensor Report - MQ3 Gas sensor", April 27, 2008

http://sensorworkshop.blogspot.com/2008/04/sensor-report-mq3-gas-sensor.html

2. "The Jacket That Tells You You’re Drunk", October 13th, 2011

http://arduino.cc/blog/category/sensors/mq-3-alcohol/

3. Blood/Breath Alcohol Concentration (BAC) calculator

http://www.dot.wisconsin.gov/safety/motorist/drunkdriving/calculator.htm#disclaimer

4. "Arduino Breathalyzer: Calibrating the MQ-3 AlcoholSensor"

http://nootropicdesign.com/projectlab/2010/09/17/arduino-breathalyzer/

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5. "Building an Breathalyzer with MQ-3 and Arduino", Mar 7, 2010

http://www.danielandrade.net/2010/03/07/building-an-breathalyzer-with-mq-3-and-arduino/

Manual of Alcohol Detecting System

Alcohol detecting systemIt’s a kind of system that detect the alcohol concentration in the cars to prevent the behavior of drunk driving.

a. android smart phone (samsung galaxy S1)b. OSX operating systemc. Arduino megad. Eclipse IDE for Java EE Developerse. Android SDKf. Amarino Tookitg. Bluetooth Medium- Bluesmirf Silver

We separate it as three parts: Laptop part, hardware part, software part

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Step 1 : Setting up connection between Arduino board and MQ3

Sensor (hardware part)

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Connect the Arduino borar and MQ3 in the following way:

H (left)–5.0V H (right)-GNDA (one of both A) — 5.0VB — GNDWe use 4 of 6 pins

Step 2 : Set up Arduino software (Laptop part)

It is the most complicated part of this experiment.You can get a detailed tutorial from http://arduino.cc/en/main/software There’re four kinds of operating system for you to chooseBasically, the software helps us input the code into the arduino board, which shows the corresponding alcohol reading result of MQ3 (sensor)

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Step 3 : Downloading Meet Arduino Library (Laptop part)

Download the MeetAndroid Library and place it into the libraries Folder Arduino.

After placing the folder into the libraries folder, you should be able to access all the amarino files through the arduino programming environment.

Or import the code (sensorgraph) that lists below

Step 4 : Setting up bluesmirf silver with arduino board (hardware

part)

Connect the bluesmirf silver Bluetooth adapter in the following way:

Tx–1 to Rx–0VCC — 5.0VGND — GNDTX — RX (digital pin 0 of arduino)RX — TX (digital pin 1 of arduino)

* very very important: Your BlueSmirf Bluetooth Module should have 115200 baud rate. When the BlueSmirf Bluetooth Module paired with your device, the green light is on.

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Step 5 : Installing Amarino (software part)

Go to http://www.amarino-toolkit.net/ and download the following applications on your mobile phone

a. Amarino – Android Application- to be installed on phone.

b. Amarino Plug-in Bundle- to be installed on phone.

c. Amarino Library- To be kept in Java Project

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Step 6 : Test the communication between Blue smirf module and

Arduino (laptop part)

Seek the open source at http://www.amarino-toolkit.net/index.php/getting-started.htmlNote: set the Serial Monitor Baud rate to 115200. Code lists in the below:

Step 7 : Set up Eclipse (software part)

It is the most complicated part of this experiment.You can get a detailed tutorial from http://developer.android.com/sdk/eclipse-adt.html#installingThe basic idea is to Install the Eclipse first(follow the system requirements), then install the android SDK, then install ADT plugin for Eclipse IDE.

Step 8 : Create new project in Eclipse (software part)

There is an open source of Sensor Graph, down load from http://code.google.com/p/amarino/downloads/detail?name=SensorGraph_02.zip&can=2&q=Codes still need to be changed to realize the function and is shown in the end of the manual.

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Step 9 : Set up the application on the phone (software part)

NOTE: you must have ADT-Plugin installed.

Go to http://developer.android.com/sdk/eclipse-adt.html

*make sure you have your “AmarinoLibrary_v0_55.jar ” file is included. Download it

step 10 : Install the application in your phone(software part)

Your phone should already be connected via usb to your computer, In your phone settings , and install from unknown sources checked.In Samsang S1, it was in settings>applications>USB debugging.

 Next, find alcohol detecting.apk that imports to your phone.

This will install the Alcohol detection app to your phone and run it.

TIPS: If your application is not installed on phone, then there is a possibility that your phone’s device driver is not installed on computer. Go to Device manager and install the driver for your phone. If you have internet connection, it searches itself for the driver. You can get more information from here:http://developer.android.com/guide/developing/device.html——————————————-

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