Title of Activity : Design the hardware
Objective :
1) To find & select a suitable components.
2) To design the project hardware.
3) To complete the project objective.
Content / Procedure :
1) Make research about the component that suitable for the project.
2) Research about how to design the project.
3) Build the ' smart phototherapy ' hardware by using the component listed.
4) Tested the hardware.
Result and Analysis :
1) Design assumption hardware that compatible to this project.
2) There are consisted of 2 compartments :
- The heat element is located at the below compartment.
- The above compartment is the area to measure the temperature which is the temperature sensor is located at this part.
3) Specification component in hardware :
a) LM35 heat sensor
b) Cooler fan 12V for air circulation.
c) Bulb 100W as heat element.
a) LM35 DZ heat sensor
- A precision integrated-circuit temperature sensor,where the output voltage is linearly proportional to the (oC) temperature.
b) Cooler fan 12V.
- Cooler fan has been used to absorb the heat produced at below compartment.
- At the center of compartment, there is one divider where located 12V cooler fan and air circulation hole.
c) Bulb 100W as heat element.
- Normal cap cool day light bulb and has standard wattage 100W.
- This bulb produce heat till (80 oC) in a few seconds.
- Produces a soft and gentle ambient light. Plus, has an ability to produce and diffuse more heat through its light.
Conclusion :
1) This project involved 2 major section : hardware & software.
2) In the hardware part, a prototype of ' smart phototherapy ' is built with a temperature sensor, controller board and pulse width modulation (PWM) circuit.
PICTURE & DIAGRAM
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