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Summary of Contents for SMART Breathalyzer 1.0
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Page 2: Table Of Contents
TABLE OF CONTENTS This device is intended to measure alcohol in human breath. Measurements obtained by this device are used in the diagnosis of alcohol intoxication. User Manual Introduction............2 Dose-specific Effects of Alcohol......3 Specifications............4 Components Diagram..........5 Operation..............6 Verification and Calibration........7 Precautions..............8 Technical Note Description of Design Components……………………….9... -
Page 3: Introduction
INTRODUCTION The Smart Breathalyzer 1.0 is an advanced version of alcohol screening device, used for the detection of alcohol in the breath and to get analytical reports. The Smart breathalyzer 1.0 provides a digital result, displaying an estimate of the subject’s BAC (Blood Alcohol Content). -
Page 4: Dose-Specific Effects Of Alcohol
Dose-specific Effects of Alcohol BAC (% by Behavior Impairment vol.) Average individual appears Subtle effects that can be detected with 0.001–0.029 normal special tests Mild euphoria Relaxation Joyousness Concentration 0.030–0.059 Talkativeness Decreased inhibition ... -
Page 5: Specifications
Specifications Dimensions 5.5 x 4.0 x 2.5 inches Weight 200g Sensor Technology MQ3 Alcohol sensor Detection Range 0.00 – 0.09 B.A.C Warm Up Time 60-80 seconds Operating Temperature 25-34 °C Maximum Operating Time 30 minutes P a g e... -
Page 6: Components Diagram
Components Diagram Push button Display Switches Keypad Mouth piece plug-in P a g e... -
Page 7: Operation
Operation STEP 1 : To on the device switch on both the switches. STEP 2 : There are two menus called calibrate and start breathalyzer. You can change options using F2 and F3 buttons in the keypad respectively. Calibration menu is for company use only. You cannot change it. -
Page 8: Verification And Calibration
Calibration The Smart Breathalyzer 1.0 is calibrated during manufacture using test results and mathematical formulas. Known alcohol concentrations are passed through the sensor to set baseline values for testing. During testing, the unit compares users’ breath samples to these baseline values. -
Page 9: Precautions
Precautions 1. Do not blow smoke, food, or liquids into the Smart Breathalyzer 1.0 as this will damage the sensor. 2. Do not test in areas with strong winds, smoke, or in an area where a large amount of alcohol is being consumed. -
Page 10: Description Of Design Components
Description of Design Components MQ3 Gas Sensor The MQ3 gas sensor is alcohol sensor which is used to detect the alcohol concentration on your breath. This sensor provides an analog resistive output based on alcohol concentration. When the alcohol gas exist, the sensor’s conductivity gets higher along with the gas concentration rising. - Page 11 Technical Overview As shown in Figure 4 Temperature and humidity can affect gas sensor reading considerably. Therefore we’re going to use Temperature-Humidity Sensor for the calibration of the device to be used in any environmental condition. 10 | P a g e...
- Page 12 GSM Module GSM module is used to transfer data from Smart Breathalyzer to the remote server via GPRS. The model we are using is SIM808 GSM module. SIM808 module is a GSM and GPS two-in-one function module. It is based on the latest GSM/GPS module SIM808 from SIMCOM, supports GSM/GPRS Quad-Band network and combines GPS technology for satellite navigation.
- Page 13 ATMEGA 2560 The Arduino Mega 2560 is a microcontroller board based on the ATmega2560. It has 54 digital input/output pins (of which 15 can be used as PWM outputs), 16 analo g inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button.
- Page 14 KEYPAD A 4X4 keypad is used to enter Vehicle number, Driver license ID to be sent to the remote database. This keypad is embedded to the device and it is used to controlling the Breathalyzer too. Hardware Overview Connecting Keypad to LCD display Connect the ground and V pins of the LCD to the Arduino, then connect the LCD’s SDA and SCL pins to 20, 21 respectively on Arduino mega.
- Page 15 Design of Smart Breathalyzer Following diagrams are the design images of the device. Device was printed using a 3D Printer and top and bottom was sealed with two Perspex sheets. Figure - Design by Solid Works Figure – Actual Device After Printing...
- Page 16 Web and Network Application Design A GSM module connected at each end is used to communicate between the device and the remote server. GPRS is used to transfer data packets from the end node to the remote server via the Internet. TCP is used as Transport Layer protocols and IP is used as Network Layer Protocol.
- Page 17 Test results obtained from MQ3 alcohol sensor Weight(kg) Percentage(%) Amount of Time after Rs/R0 alcohol(ml) ingestion(min) percentage(%) 1.44 0.05 1.44 0.05 1.16 0.04 4.27 0.01 0.09 0.09 1.06 0.08 1.15 0.07 1.28 0.06 2.04 0.03 2.68 0.02 0.00 Callibaration of MQ3 gas sensor using test results Figure –...
- Page 18 VARIATION OF BAC WITH Rs/Ro (Sensor Value) Rs/R0 BAC percentage(%) 1.44 0.05 1.44 0.05 1.16 0.04 4.27 0.01 0.09 0.09 1.06 0.08 1.15 0.07 1.28 0.06 2.04 0.03 2.68 0.02 BAC percentage(%) -1.435 y = 0.0811x 0.09 0.08 0.07 0.06 0.05 0.04 0.03...
- Page 19 VARIATION OF log(BAC) WITH log(Rs/Ro) Rs/R0 ln(Rs/R0) BAC percentage(%) ln(BAC) 1.44 0.364643 0.05 -2.99573 1.44 0.364643 0.05 -2.99573 1.16 0.14842 0.04 -3.21888 4.27 1.451614 0.01 -4.60517 0.09 -2.40795 0.09 -2.40795 1.06 0.058269 0.08 -2.52573 1.15 0.139762 0.07 -2.65926 1.28 0.24686 0.06 -2.81341 2.04...
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Page 20: Testing
Testing of server 19 | P a g e... - Page 21 20 | P a g e...
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