Mid-Semester Update - (11th - 15th April 2022)

 بِسْــــــــــــــــــمِ اللهِ الرَّحْمَنِ الرَّحِيْمِ

السلام عليكم ورحمة الله وبركاته

A  motivated post by Izzati Amin

    During mid semester break, I spent my days at UniKL BMI hostel. I guessed this is the right time for me to move my gear at full speed for this Final Year Project since I had more time to spare on this mosquito trap project.

ACTIVITIES

Monday (11/4/2022)

I decided to remove Ultrasonic sensor as one of the hardware for my project. Ultrasonic sensor is an instrument that measures the distance of an object using ultrasonic sound waves regardless of shape, colour and surface texture. It is also a transducer that send and receive ultrasonic pulses that relay back information on proximity (movement) of an object (mosquitoes as in my project).

Previously, in a clear project view of this sensor on my project, I choose HC SR04-5V model of ultrasonic sensor as it have the ability to measure an approaching/receding mosquitoes by  producing 40kHz of frequency. To my knowledge of research on mosquitoes characteristics, 40kHz of frequency would put so much weight and pressure on their hair/sensilla, which will jammed/blocked the mosquitoes's own ultrasonic recurrence and lead the to LEAVE the territory. 

This project is to capture mosquitoes, not to asking them leaving the territory.  The results of project need the number of mosquitoes being sucked into the trap, therefore, eliminating ultrasonic sensor is a must. 

For future recommendation of project, maybe next engineer can use ultrasonic sensor as an option for this project if their aim is just to chase the mosquitoes from the territory, as they maybe did not need the number of mosquitoes captured by trapping devices. On an easy terms' a 'repellent devices".

Ultrasonic sensor added = Mosquitoes Repellent Devices

Ultrasonic sensor removed =  Mosquitoes Trapping Devices. 

Tuesday (12/4/2022)

Activity - Dis-ambling of mosquito swatter

 

Figure : Mosquito fly swatter before dis-amble process

1. DESCRIPTION

• Product name: electric mosquito swatter
• Weight: 225 grams
• Input interface: USB
• Size: Length: 43cm, Width: 18cm
• Battery capacity: 450mAH
• Input voltage: 5V
• Output voltage: 2700v
• Charging time: 4 hours
• Use time: in the case of full power, up to 20 days of normal use time

2.FEATURE

a. Mosquito trap emits purple light

Ultraviolet rays are used to attract mosquitoes, and the waves are safe and harmless to the human body

b. Mosquito killer

Night light function, convenient to get up at night without worrying about the darkness

c. Long battery life

4500mAH large capacity

Charging time: 4 hours of charging

Intelligent mosquito killer: use time 20 days

Manually kill mosquitoes: use time for 20 days

d. Three layers of protection

Figure : Electric net after dis-ambling process. 

• There are 5 protection layers to be exact. The 1st, 3rd and 5th layer are the electric net being separated by plastic divider (2nd and 4th layer).
• The 1st and the 5th net, the outermost layer, acts as positively charged net.
• The 3rd net, middle net, is the negatively-charged net.
• The plastic layer is important to prevent the positively and negatively-charged from 'touching' in order to prevent electric short. 
• The system will work when both of the mosquitoes wing will touch the 1st and 3rd layer, or vice versa, the 5th and the 3rd layer. This phenomenon will complete a 1 cycle electric circuit, thus causing the mosquitoes to be electrocuted. this is a very strong voltage and mosquitoes can be killed immediately