Week 6 : Air circulation and make power supply 240V , transformer 9V/0.2A.

Week No : 6                                                                                            Date : 1/3/2012

Title of Activity : Air circulation and make power supply 240V , transformer 9V/0.2A.

Objective :

1) To make the air circulation is at the maximum.

2) To design the power supply for 240V.

3) To convert the power supply from 240V to 9V dc.

Content / Procedure :

1) Searching the information from the internet.

2) Getting the information about the air circulation.

3) Know the air circulation function.

4) Design the power supply using socket outlet 13A.

5) Convert the voltage using transformer 9V/0.2A.

Result and Analysis :

1) The air circulation can be occurred as a result of a heat air movement in a different air pressure are going to up and move down.

2) The air movement occurs because the atmosphere heating is not distributed evenly.

3) The air moves from the relatives chilled & high pressured area to the relative warm & low pressured area.

a) Socket outlet 13A.

- Shall be of 3 rectangular pin, has life,neutral and earth prongs. 

- The plug has a fuse inside that required to protect the cord of wires.

b) Transformer 9V/0.2A.

- Step down the voltage 240V to 9V/0.2A.

- A power supply is a device that supplies electrical energy to one or more electric loads.

- The terms is commonly applied to devices that converted to one form of electrical energy to another, through it may also refer to devices that convert another energy form to electrical energy.

Conclusions :

1) To circulate the air effectively, absorb fan should be used. The type of absorb fan is depending on the quantity of circulated air and the speed to circulate air.

2) Every power supply must be obtained the energy it supplies to its load as well as any energy it consumes while performing that task from an energy sources.

PICTURES & DIAGRAM.

 

a) Figure shows the socket outlet 13 Ampere.

b) Figure shows the transformer 9V/0.2A.

c) Figure shows the power supply for socket outlet 13A, transformer 9V/0.2A and adapter.

Week 5 : Temperature Sensor ( LM 35 )

Week No : 5                                                                                                        Date : 23/2/2012

Title of Activity : Temperature Sensor ( LM 35 )

Objective :
1) To make sure low and high temperature detected.
2) To know how the sensor function.

Content / Procedure :
1) Research on website about sensor LM35.
2) Search on how to connect the LM35 with the project circuit.

Result / Analysis :
1) LM35 DZ is a precision IC temperature sensor.
2) The output voltage is linearly proportional to the ( ^oC ) temperature.
3) The LM35 DZ has an advantage over linear temperature sensor calibrated in ( Kelvin ), as the user is not required to subtract a large constant voltage from its output to obtain convenient centigrade sealing.

Conclusion :
1) This type of sensor can calibrated directly in ( ^oC ) and the linear is ( +10.0 mV/ ^oC ) scale factor.
2) The rated for full scale is ( -55 ^oC ) to ( +150 ^oC ) range.
3) This sensor can operates from ( 4V to 30 V ).
4) It has low self heating ( 0.08 ^oC ) in still air.

PICTURE DIAGRAM OF LM 35DZ

 

a) Example of heat sensor LM35 DZ













b) Schematic diagram of heat sensor LM35 DZ

Week 4 : Pulse Width Modulator ( PWM ) circuit and Triac BT 139.

Week No : 4                                                                                                    Date : 16/2/2012

Title of Activity : Pulse Width Modulator ( PWM ) circuit and Triac BT 139.

Objective :
1) To understand how the PWM works.
2) To research and design the function of Triac BT 139.

Content / Procedure :
1) Make research on website about the PWM circuit & how to use it.
2) Design how to connect the PWM circuit with the micro-controller.
3) The function of Triac BT139 for using in the circuit.

Result and Analysis :
1) Pulse Width Modulator (PWM) circuit will receive decoded signal from PIC to control the heat, whereas the PWM is more like switch for heater.
2) The main component in this circuit is MOC3041M, whereas this device consist of infrared emitting diode optically coupled to a monolithic silicon detector performing the function of a zero voltage crossing bilateral triac drives.
3) BT139 are using in this circuit, whereas its glass passivited triacs in a plastic envelope,intended for use in application requiring high bidirectional.
4) Blocking voltage capability and high thermal cycle performance.
5) Typical used include motor control,industrial and domestic lighting, heating and static switching.
6) The maximum voltage triac can be supported is 500V and maximum current can support is 16A.

Conclusion :
By using PWM circuit, the heat control for the project will be efficiency & the process of project will run well.

PICTURE & DIAGRAM OF TRIAC BT139 & MOC3041M

a) Pin configuration of Triac BT139

 b) Symbol Triac BT139

c) Schematic diagram for MOC3041M

d) Figure shows about the zero voltage crossing

Week 3 : Micro-C circuit

Week No : 3                                                                                              Date : 9/2/2012

Title of Activity : Micro-C circuit

Objective :
1) To identify what kind of circuit or micro-controller that will be used.
2) To ensure the circuit that can be used.

Content / Procedure :
1) Researching about the micro-controller that have been selected to support the project.

Result / Procedure :
1) After make a research , the type of IC that would be used is PIC 16F877A.
2) This IC have many port & ADC port compare than PIC 16F84A that have less port.
3) This IC is needed a power supply where the F305 regulated power supply used to supply 5V.

Conclusion :
1) Based on the research from the internet, the PIC 16F877A is selected. This IC is compatible because it have an ADC port that can support the input signal and have many port to use from port A,B,C & D. This IC also needed a voltage regulated circuit to use as power supply to the PIC.

Week 2 : Block Diagram & Flow Chart

Week No : 2                                                                                                  Date : 2/2/2012


Title of Activity : Block Diagram & Flow Chart

Objective :
1) To make this project is easy to understand and look reliable.
2) To test write the program in the proper way.

Content / Procedure :
1) Making the block diagram from input processor & output.
2) To make a flow in the proper way to write the program.
3) Understand how the project is running.

Result and Analysis :
1) By using a block diagram to understand this project more easier.
2) The flowchart is made to start the program writing.
3) Understanding how the project operate by referring to the flowchart & block diagram.

Conclusion :
1) By using block diagram & flowchart, it can give more understanding about the flow of the program to finish up this project well.
2) Thus, the flowchart is really important in this project. So that, the progress will be going smoothly without any disturbances.

BLOCK DIAGRAM

Week 1: Progress activities for the Degree Semester 2 Final Year Project

Week No : 1                                                                                                     Date : 26/1/2012


Title of Activity : Progress activities for the Degree Semester 2 Final Year Project

Objective :

1) To get guidance and some advice from the advisor to proceed for the next level of project's progress.
2) To get the information and new-updated news about the FYP S1/2012.

Content / Procedure:

1) Having a short briefing about the updated news of final year project for Degree Semester 2.
2) The advisor explained to create a blog and make all the updated progresses of project inside the blog.
3) Log book is replaced with the blog. All the marks will be given based on the contents of blog.

Result and Analysis :

1) So, after met with Madam Siti Afifah Binti Mohshim, she had given all the useful tips for the progress project.
2) She had also explained more about what should do/don't during the progress of project.


Conclusion :
The project can be proceed with the guidance from  the advisor and the updated of progress will be noted on the blog.