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

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45 After interfacing the data transfer and LABVIEW was done, the next process is to read the data transfer. From the figure 3.24, decimal string to number is needed for converting the numeris characters in string thats starting at offset to a decimal interger and return it in number. Once the string number from visa has been changed, the output number needs to convert back into the original of voltage value. The converter process is shown in Figure 3.25. As mentioned before, Arduino will read the data in the 10-bit data only. Therefore, to convert the value in the original voltage is by the equation in 3.7. Figure 3.25: Converter Process The next step in LABVIEW process is to show the LED indicators for user monitoring. The range will conduct the voltage value according to the threshold value that has been set before. Finally, the last step is to monitor the concentration value of the gas. In this step, the concentration value is calculate based on the graph analysis as mentioned before. Therefore, to calculate the gas concentration for LPG and alcohol gas are using the equation 3.8 and 3.9 as below.
46 The last stage in the data monitoring system is interface the system with internet server. There are very easy step in this project because LABVIEW software already provide built-in function process. To start turning data into internet server, first at all find the web publishing tool at at menu tools as show in Figure 3.26. Figure 3.26: Web Publishing Tools LABVIEW
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WIRELESS GAS MONITORING SYSTEM OF G
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“I hereby declare that I have rea
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ii I declare that this thesis entit
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iv ACKNOWLEDGEMENT In preparing thi
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vi ABSTRAK Tujuan projek ini adalah
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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 and 28: 8 (which is 300ppm), the actuator c
Page 29 and 30: 10 2.2 The hazardous gases Based on
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: 44 Figure 3.23: VISA Interfacing Bl
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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