wireless monitoring system of gas detector - Faculty of Electrical ...

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9 Figure 2.3: Result of the gas concentration based on the sensor replacement [5] Figure 2.3 above shows the result of the system operation. The concentrations of CO are depending on the time of sensor senses the gasses. Between 1300 and 1400, kitchen room gave the highest reading of CO concentration from the analysis of the graph. Meanwhile, bedroom with door closed mostly detect zero percent of CO gas. The third paper that is related to this project is “Toxic Gas Release Alarm System Using PIC Microcontroller” by Zarith Sofia Suraya Bt Hj Bakeri from Universiti Teknologi Malaysia[6]. This project was created to detect carbon monoxide using TGS 2442 gas sensor and generate an alarm signal when the detected gas reaches its hazardous level. Powered by Microchip‟s PIC18F2550, this project alarmed when the carbon monoxide gas reach a hazardous level and be aware of the gas concentration level displayed on the LCD system.
10 2.2 The hazardous gases Based on Occupational Safety and Health Administration (OSHA), the definition of hazardous gas is defined as those chemical present in the workplace which are capable of causing harm. From the definition of the hazardous gas, the chemical term refer to dust, mixtures and common materials such as paints, fuels and solvents. According to the limitation of the LPG gas, OSHA mentioned that exposes over 1000ppm of LPG gas will cause hazard to the human respiration system[7]. Therefore, this value is used as the threshold value for the project. Meanwhile, the alcohol gas threshold value was chosen to be half value from the graph of the gas sensor 2.3 Sensors and Instrumentation The initial data receiver came from the gas sensor. Study on the working principle of gas sensor needs to be done in order to understand where the voltage output came from. Besides that, zigbee will also be an important component that needs to be analyzed for data transferring by wireless. Therefore, the following subsection explained the gas sensor and zigbee working principle working.
Page 1 and 2: WIRELESS GAS MONITORING SYSTEM OF G
Page 3 and 4: “I hereby declare that I have rea
Page 5 and 6: ii I declare that this thesis entit
Page 7 and 8: iv ACKNOWLEDGEMENT In preparing thi
Page 9 and 10: vi ABSTRAK Tujuan projek ini adalah
Page 11 and 12: viii 2.1 Introduction 6 2.2 The Haz
Page 13 and 14: x LIST OF TABLES TABLE NO. TITLE PA
Page 15 and 16: xii 3.1 Methodology of the Project
Page 17 and 18: xiv LIST OF SYMBOLS CO - Carbon Mon
Page 19 and 20: xvi LIST OF APPENDICES APPENDIX TIT
Page 21 and 22: 2 min, and death within 30 min. Ver
Page 23 and 24: 4 iv. Zigbee Arduino Uno is a devic
Page 25 and 26: 6 CHAPTER 2 LITERATURE REVIEW 2.1 I
Page 27: 8 (which is 300ppm), the actuator c
Page 31 and 32: 12 From Ohms Law in equation 2.1, v
Page 33 and 34: 14 advanced analysis and data visua
Page 35 and 36: 16 2.5.1 Buzzer Figure 2.10: Buzzer
Page 37 and 38: 18 2.5.3 Exhaust Fan Exhaust fan as
Page 39 and 40: 20 Start Writing programming and co
Page 41 and 42: 22 Figure 3.3: Experiment Diagram o
Page 43 and 44: 24 Figure 3.6: Gas Sensor Circuit D
Page 45 and 46: 26 Table 3.1: Threshold Value for G
Page 47 and 48: 28 Last but not least, the output c
Page 49 and 50: 30 As mention in chapter 2, Arduino
Page 51 and 52: 32 iii. Step 3: (200, 2) (1000, 1)
Page 53 and 54: 34 iv. Step 4: Since Arduino only r
Page 55 and 56: 36 start read the output voltage by
Page 57 and 58: 38 void setup() { Serial.begin(9600
Page 59 and 60: 3.3V RX TX 5V GND 40 digitalWrite(l
Page 61 and 62: 42 The set up for the Zigbe data tr
Page 63 and 64: 44 Figure 3.23: VISA Interfacing Bl
Page 65 and 66: 46 The last stage in the data monit
Page 67 and 68: 48 Figure 3.28: Step 2 Then, the fi
Page 69 and 70: 50 CHAPTER 4 RESULT AND DISCUSSION
Page 71 and 72: 52 The overall project set up shown
Page 73 and 74: 54 After that, the system of gas mo
Page 75 and 76: 56 CHAPTER 5 CONCLUSION AND RECOMME
Page 77 and 78: 58 REFERENCES [1] Incorporated, C.
Page 79 and 80:
60 APPENDIX 1. Block diagram for MQ
Page 81 and 82:
3. Arduino programming for MQ3 62
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