Sunday, 20 May 2012

week 14

Title of the project : Presentation during Engineering day

      After day after day, week after week, month after month, after two semesters working for this final year project, this week is the last week before the project is presented at Gemilang Hall UNIKL BMI. The assessors for my project is Sir Tan and Miss Hafizah. 

some picture during presentation day
 
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week 13

Title of the project : Preparing the poster for presentation of Engineering day

        Before the Engineering day, the poster of presentation need to be prepared to give more easier to presenter to explain the project The poster should consist project description, objective, block diagram, methodology, result, and conclusion. During the presentation, student will have to explain all about the project by referring at the poster that already made. That is the use of the poster. Figure below shows my poster that will be used during the Engineering day. 


Poster of the presentation during engineering day
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week 12

Title of the activity : Finishing the project

   The overall circuit that was constructed before this need to compile with the casing to finish the project works. Figure below shows the overall view of the project.








             The cover of the casing can be opened easily to shows the transmitter circuit below the cover. Even the transmitter coil and  the receiver coil was divided with the cover, the voltage still can be induced through the cover.
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week 11

Title of the activity : Designing the casing of the project.

    To design the container as a holder for the circuit, the hard plastic called " prospect" was used. The criteria of using this prospect is because it easy to design,cheap, and light. Figure below shows the miniature of the casing.

The casing of the project





     The casing above was attached with the fan to give a cool to the circuit. Some of the circuit include the coil of the transmitter will become heat when the project is turn on for a long period. That's why the fan is needed.
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week 10

Title of activity: PCB board etching for power supply circuit 



   For this week, the circuit board for power supply was designed. The methods of etching is similar compare to before this. Figure below shows the PCB board of power supply with the components.





Power supply circuit
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week 9

Title of the activity : Designing the PCB layout for power supply     


   Before this, to supply the power to the prototype of the project, the dc power supply from the lab was used to do the experiment. So, I want to make my own power supply that can be attached to the prototype. Figure below is the circuit schematic by using Diptrace software. 

PCB layout of the power supply

Schematic diagram of the power supply
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week 8

Title of the activity: Etching the circuit for the project      


           After the schematic diagram of the circuit was designed by using Diptrace software, the etching of the PCB board can be proceeded. The method that chosen to do the etching by using the iron. After the track of the circuit was printed on transparent plastic, the track of the circuit need to transfer to the PCB board. Hence, the plastic need to be ironed together with the PCB board. Then, for four more minutes, slowly move the iron around making sure to put a lot of pressure on the plastic, but not allowing the plastic to slide on the board. When done, let the board fully cool before moved it at all. This will allow the toner to adhere to the copper and prevent you from being burned.
          In a well-ventilated area with a fan, add 2-cups hydrogen peroxide to a plastic container. Gently pour in 1-cup Muriatic acid, to create the etching solution. Always wear goggles, gloves, and do not inhale the fumes. Do not use any metal containers, measuring cups, stainless steel sinks, or tools with this mixture as this mixture will aggressively etch metal. Acid safety, think “triple A”, for Always Add the Acid, it’s whatever is in the container that will end up splashing. This etching solution, while made with common chemicals, should command respect. It is dangerous to yourself and surroundings, treat it with respect. Ferric chloride is another common etching solution, it is not a safer solution to use, both are equally dangerous.

The receiver circuit

The oscillator circuit

The transmitter circuit


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Wednesday, 16 May 2012

week 7

Title of the activity : Designing the PCB layout for the transmitter and the receiver circuit        





          Before this,the circuit of the project are constructed on breadboard. To proceed the project, the circuit need to soldered together on PCB board. The design of PCB layout was designed by using the Diptrace software. Figures below shows the layout of PCB for the transmitter and the receiver.

Transmitter part circuit layout.
The layout of the transmitter circuit for etching work.

         For the receiver part, the circuit of rectifier and regulator circuit  was added to produce the DC voltage. The circuit regulator is used to maintain 5V of the rectifier output. Figure below shows the layout of the circuit.

Transmitter part circuit layout.
The layout of the receiver circuit for etching work.


















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week 6

  Title of the activity : Tabulating the result in the table  





     After do the experiments in lab, the results from the lab was recorded and tabulated in table. The input voltage,the output voltage,the input current and the output current was recorded to proceed the analysis.To get the input power and the formula of power was used.

Power,P=VI

Table below shows the data from the experiment..


Distance (cm)
Input Voltage (Vdc)
Output Voltage (Vac)
Output Voltage (Vdc)
Input Current (A)
Input Power (W)
Output Current (A)
Output power (W)
1
11.5
11.26
7.01
1.02
11.73
0.32
3.68
1.5
11.5
11.18
6.96
1.00
11.5
0.27
3.12
2
11.5
11.11
6.92
0.94
10.81
0.26
2.99
2.5
11.5
11.03
6.87
0.91
10.47
0.24
2.76
3
11.5
10.98
6.83
0.84
9.66
0.21
2.42
3.5
11.5
10.71
6.66
0.75
8.63
0.20
2.30
4
11.5
10.57
6.59
0.64
7.36
0.20
2.30
4.5
11.5
9.87
6.14
0.55
6.33
0.18
2.07
5
11.5
8.15
5.05
0.49
5.64
0.14
1.61
5.5
11.5
8.03
4.97
0.45
5.18
0.10
1.15
6
11.5
7.75
4.79
0.43
4.95
0.09
1.04
6.5
11.5
6.69
4.11
0.40
4.60
0.07
0.81
7
11.5
6.13
3.76
0.36
4.14
0.06
0.69
7.5
11.5
5.51
3.36
0.34
3.91
0.05
0.58
8
11.5
5.03
3.05
0.33
3.80
0.02
0.23
8.5
11.5
4.64
2.81
0.33
3.80
0.00
0.00
9
11.5
3.67
2.19
0.31
3.57
0.00
0.00
9.5
11.5
3.06
1.80
0.30
3.45
0.00
0.00
10
11.5
2.53
1.46
0.29
3.34
0.00
0.00
10.5
11.5
2.34
1.34
0.29
3.34
0.00
0.00
11
11.5
2.18
1.24
0.28
3.22
0.00
0.00
11.5
11.5
2.06
1.16
0.28
3.22
0.00
0.00
12
11.5
1.73
0.95
0.27
3.11
0.00
0.00
12.5
11.5
1.55
0.84
0.26
2.99
0.00
0.00
13
11.5
1.43
0.76
0.26
2.99
0.00
0.00
13.5
11.5
1.35
0.71
0.26
2.99
0.00
0.00
14
11.5
1.24
0.64
0.26
2.99
0.00
0.00
14.5
11.5
1.20
0.62
0.26
2.99
0.00
0.00
15
11.5
1.16
0.59
0.25
2.88
0.00
0.00
15.5
11.5
1.10
0.56
0.25
2.88
0.00
0.00
16
11.5
0.97
0.47
0.25
2.88
0.00
0.00
16.5
11.5
0.89
0.43
0.24
2.76
0.00
0.00
17
11.5
0.71
0.31
0.24
2.76
0.00
0.00
17.5
11.5
0.64
0.27
0.23
2.65
0.00
0.00
18
11.5
0.43
0.15
0.23
2.65
0.00
0.00
18.5
11.5
0.34
0.10
0.23
2.65
0.00
0.00
19
11.5
0.14
0.02
0.23
2.65
0.00
0.00
19.5
11.5
0.06
0.00
0.22
2.53
0.00
0.00
20
11.5
0.00
0.00
0.22
2.53
0.00
0.00



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