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MOSQUITO REPELLENT USING FREQUENCY GENERATOR
Acknowledgement
First and foremost, I would like to acknowledge my heartedly
thanks to respected Mr.N.B. HULLE, HOD(E&TC dept) for being a
source of perpectual inspiration and providing us such nice environment
for training nicely.
I would also like to express my most sincere gratitude to
our guide Mr.S.G.ITKALKAR for there valuable help during
development of this project. Without his priceless suggestion and timely
help, we would not have been able to complete this project.
Last but not the least I would express my regards for
Electronics And Telecommunication Department of our institute.
Page 1
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
INDEX
1. INTRODUCTION......................................5
2. LITERATURE SURVEY..........................7
3. ABSTRACT................................................8
4. SYSTEM MODEL
4.1 Block diagram of System........................9
4.2 List of Components…………………....10
5. HARDWARE DESCRIPTION
5.1 Circuit Diagram.......................................11
5.2 Pin description…………………….........12
6. PCB Layout ...............................................13
6.1 Simulation of the project………………14
6.1.1 PCB Designing……………………...14
6.1.2 Simulation………………………………..14
7. Advantages and Disadvantages…….…....15
Page 2
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
8. Application of Project...............................16
9. References..................................................17
10. Cost of Project ……………..…………... .18
11. Conclusion……………………………......19
1.INTRODUCTION
It is possible that pests like insects, ants, rats, mice etc. are repelled by
ultrasonic frequency in the range of 30 kHz to 50 kHz. Human beings
can’t hear these high-frequency sounds. Our product repels pests by
emitting pulse ultrasonic waves. Using ultrasonic waves creates a noisy
and hostile environment which repels pests, whilst remaining absolutely
safe for humans and household animals. Unfortunately, all pests do not
react at the same ultrasonic frequency.
While some pests get repelled at 25 kHz, some others get repelled at
30KHz to 40 kHz or even higher frequencies.
Thus to increase the effectiveness, frequency of ultrasonic oscillator has
to be continuously varied between certain limits. Frequency of emission
of ultrasonic sound is continuously varied by our product in different
patterns to repel different insects.
Electronic Pest Repellent is the name given to the use of any of the
several types of electrically powered devices designed to repel or
eliminate pests such as rodents, Mosquito’s, etc.
Page 3
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
There are usually two types of electronic mosquito repellent devices
widely used & available, these are Ultrasonic & Electromagnetic.
Ultrasonic devices operate by emitting short wavelength, high frequency
sound waves too high in pitch to be heard by the human ear (all
frequencies greater than 20,000 Hz). This is due to limitations in human
hearing. Humans cannot hear ultrasound because the eardrum
does not vibrate fast enough, but some animals such as dogs, bats and
rodents can hear
well into the ultrasonic range. Some insects, such as grasshoppers and
locusts can detect
frequencies from 50,000 Hz to 100,000 Hz, and moths and lacewings
can detect ultrasound
as high as 240,000 Hz produced by insect-hunting bats.
Insects detect sound by special hairs or sensilla located on the antennae
(mosquitoes) or genitalia (cockroaches), or by more complicated
tympanal organs (grasshoppers, locusts,
moths and butterflies).
"Ultrasound and Arthropod Pest Control" an extensive Kansas State
University study confirmed that ultrasonic sound devices do have both a
repellent effect as well as a reduction in mating and reproduction of
various insects. However, the results were mixed and ultrasonic sound
had little or no effect on some pests. Various ultrasonic devices where
highly effective on crickets while the same devices had little or no
repellent effect on cockroaches.
Additionally the results where mixed with some devices being effective
while others having no effect depending on the test subject.
The study also concluded there was no effect on ants or spiders in any of
the tests. They concluded, based on the mixed results, that more research
is needed to improve these devices.
Page 4
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
2. Literature Survey
1. A test conducted in canada proved that DEET(N,N-
diethyl-3-methyalbenzamide) proved to provide max
protection against mosquito than Avon skin lotion &
special mixture chemicals.
2.But the drawbacks of it were, it was limited to particular
time, chemicals proved harmful for small children & some
lotions caused skin irritations to some people.
3.Mosquito Repeller using Frequency Generator overcomes
all this drawbacks & provide hazzle free protection from
mosquito’s.
Page 5
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
3. ABSTACT
The purpose of the project is to design an ultrasonic pest
repellent. Such a device can be very useful to counter the
various problems caused by ants, insects, pests, rodents, etc.
The device is compact, cheap, and it does not cause any
pollution unlike the other chemical repellents.
We have used a RC oscillator circuit to generate a frequency of
ultrasonic range to keep the mosquito’s away.
The circuit has been experimentally tested on ants, bugs, and
small insects, and it has been successful in repelling them
through the generation of ultrasonic frequency sound.
Page 6
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
4. SYSTEM MODEL
4.1 Block Diagram of system:-

Page 7
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
4.2 List of Components:
1. Astable Timer IC- IC555
2. Diode 1N4007
3. Resistors: R1-68K ohms
R2-100 ohms
4. Capacitors: C1- 470 micro farad
C2- 0.2 pico farad
C3- 0.01 micro farad
5. Piezo-buzzer
6. 1 on/off switch
7. Battery supply – 12 Volts
8. 1 Red LED
Page 8
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
5. HARDWARE DESCRIPTION
5.1 Circuit Diagram of Project:-
Fig 5.1 Circuit Diagram
Page 9
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
5.2 Pin diagram
Fig 5.2.1 1Pin diagram
Page
10
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
6. PCB Layout of main circuit
Page
11
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
Fig 7. PCB Layout of main circuit
6.1 Simulation of the project
6.1.1 PCB designing:
Page
12
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
There are many software’s for the design of the PCB viz. express PCB,
Eagle PCB, Proteus, Circuit Wizard, Diptress, Protel, Ultiboard . Out of these
we have used Circuit Wizard for designing of our project’s PCB.
We have tested and checked our circuit and program using circuit
wizard software. It is very easy to use and understand the design of project
7. Advantages and Disadvantages:-
7.1 Advantages
1. Non Harmful to humans as frequency used is ultrasonic
Page
13
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
2. No ill odour generated
3. Simple construction
4. Handling is easy
5. Low Cost device
6. No need of AC mains supply
7. Battery can be replaced by solar charger
7.2 Disadvantage
1. Cannot be used for wide range
8. APPLICATION OF PROJECT:
Page
14
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
1.Mostly used in household applications
2.Can be used in Hospitals
3.Can be used in tents during trekking
4. In rooms with no electricity
9. References
1. Circuit garage
Page
15
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
2. Electronics for you
3. Datasheet of IC 555
4. Electronics magazine
5. Mosquito Repellent Effectiveness: A placebo controlled trial
comparing 95% DEET, Avon skin so soft, & a special mixture –
Richard Beever, MD.
6. International journal of Pharmaceutical, Biological &
chemical sciences
10. Cost of project
SR.NO COMPONENTS QUANTITY PRICE(Rs.)
Page
16
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
1
2
3
4
5
6
7
8
9
10
PCB Layout
IC1 7555 Timer
Diode 1N4007(Rectifier Diode)
Resistor1(R1=65k ohms)
Resistor2(R2=100 ohms)
Capacitor1(C1=470 micro F)Electro
Capacitor2(C2=0.2 pico F) Ceramic
Capacitor3(C3=0.01 micro F) Ceramic
Battery supply(12V)
Switch
1
1
1
1
1
1
1
1
1
80
10
1
1
1
1
1
1
40
5
11. Conclusion:-
Thus we have seen that the Resistors R1,R2 &
Capacitor C1 generates the desired frequency i.e., above 30K ohms
which is the suitable range for our project. Thus mosquito repellent
works efficiently as a frequency generator.
Page
17
MOSQUITO REPELLENT USING FREQUENCY GENERATOR
Page
18

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Mini project

  • 1. MOSQUITO REPELLENT USING FREQUENCY GENERATOR Acknowledgement First and foremost, I would like to acknowledge my heartedly thanks to respected Mr.N.B. HULLE, HOD(E&TC dept) for being a source of perpectual inspiration and providing us such nice environment for training nicely. I would also like to express my most sincere gratitude to our guide Mr.S.G.ITKALKAR for there valuable help during development of this project. Without his priceless suggestion and timely help, we would not have been able to complete this project. Last but not the least I would express my regards for Electronics And Telecommunication Department of our institute. Page 1
  • 2. MOSQUITO REPELLENT USING FREQUENCY GENERATOR INDEX 1. INTRODUCTION......................................5 2. LITERATURE SURVEY..........................7 3. ABSTRACT................................................8 4. SYSTEM MODEL 4.1 Block diagram of System........................9 4.2 List of Components…………………....10 5. HARDWARE DESCRIPTION 5.1 Circuit Diagram.......................................11 5.2 Pin description…………………….........12 6. PCB Layout ...............................................13 6.1 Simulation of the project………………14 6.1.1 PCB Designing……………………...14 6.1.2 Simulation………………………………..14 7. Advantages and Disadvantages…….…....15 Page 2
  • 3. MOSQUITO REPELLENT USING FREQUENCY GENERATOR 8. Application of Project...............................16 9. References..................................................17 10. Cost of Project ……………..…………... .18 11. Conclusion……………………………......19 1.INTRODUCTION It is possible that pests like insects, ants, rats, mice etc. are repelled by ultrasonic frequency in the range of 30 kHz to 50 kHz. Human beings can’t hear these high-frequency sounds. Our product repels pests by emitting pulse ultrasonic waves. Using ultrasonic waves creates a noisy and hostile environment which repels pests, whilst remaining absolutely safe for humans and household animals. Unfortunately, all pests do not react at the same ultrasonic frequency. While some pests get repelled at 25 kHz, some others get repelled at 30KHz to 40 kHz or even higher frequencies. Thus to increase the effectiveness, frequency of ultrasonic oscillator has to be continuously varied between certain limits. Frequency of emission of ultrasonic sound is continuously varied by our product in different patterns to repel different insects. Electronic Pest Repellent is the name given to the use of any of the several types of electrically powered devices designed to repel or eliminate pests such as rodents, Mosquito’s, etc. Page 3
  • 4. MOSQUITO REPELLENT USING FREQUENCY GENERATOR There are usually two types of electronic mosquito repellent devices widely used & available, these are Ultrasonic & Electromagnetic. Ultrasonic devices operate by emitting short wavelength, high frequency sound waves too high in pitch to be heard by the human ear (all frequencies greater than 20,000 Hz). This is due to limitations in human hearing. Humans cannot hear ultrasound because the eardrum does not vibrate fast enough, but some animals such as dogs, bats and rodents can hear well into the ultrasonic range. Some insects, such as grasshoppers and locusts can detect frequencies from 50,000 Hz to 100,000 Hz, and moths and lacewings can detect ultrasound as high as 240,000 Hz produced by insect-hunting bats. Insects detect sound by special hairs or sensilla located on the antennae (mosquitoes) or genitalia (cockroaches), or by more complicated tympanal organs (grasshoppers, locusts, moths and butterflies). "Ultrasound and Arthropod Pest Control" an extensive Kansas State University study confirmed that ultrasonic sound devices do have both a repellent effect as well as a reduction in mating and reproduction of various insects. However, the results were mixed and ultrasonic sound had little or no effect on some pests. Various ultrasonic devices where highly effective on crickets while the same devices had little or no repellent effect on cockroaches. Additionally the results where mixed with some devices being effective while others having no effect depending on the test subject. The study also concluded there was no effect on ants or spiders in any of the tests. They concluded, based on the mixed results, that more research is needed to improve these devices. Page 4
  • 5. MOSQUITO REPELLENT USING FREQUENCY GENERATOR 2. Literature Survey 1. A test conducted in canada proved that DEET(N,N- diethyl-3-methyalbenzamide) proved to provide max protection against mosquito than Avon skin lotion & special mixture chemicals. 2.But the drawbacks of it were, it was limited to particular time, chemicals proved harmful for small children & some lotions caused skin irritations to some people. 3.Mosquito Repeller using Frequency Generator overcomes all this drawbacks & provide hazzle free protection from mosquito’s. Page 5
  • 6. MOSQUITO REPELLENT USING FREQUENCY GENERATOR 3. ABSTACT The purpose of the project is to design an ultrasonic pest repellent. Such a device can be very useful to counter the various problems caused by ants, insects, pests, rodents, etc. The device is compact, cheap, and it does not cause any pollution unlike the other chemical repellents. We have used a RC oscillator circuit to generate a frequency of ultrasonic range to keep the mosquito’s away. The circuit has been experimentally tested on ants, bugs, and small insects, and it has been successful in repelling them through the generation of ultrasonic frequency sound. Page 6
  • 7. MOSQUITO REPELLENT USING FREQUENCY GENERATOR 4. SYSTEM MODEL 4.1 Block Diagram of system:-  Page 7
  • 8. MOSQUITO REPELLENT USING FREQUENCY GENERATOR 4.2 List of Components: 1. Astable Timer IC- IC555 2. Diode 1N4007 3. Resistors: R1-68K ohms R2-100 ohms 4. Capacitors: C1- 470 micro farad C2- 0.2 pico farad C3- 0.01 micro farad 5. Piezo-buzzer 6. 1 on/off switch 7. Battery supply – 12 Volts 8. 1 Red LED Page 8
  • 9. MOSQUITO REPELLENT USING FREQUENCY GENERATOR 5. HARDWARE DESCRIPTION 5.1 Circuit Diagram of Project:- Fig 5.1 Circuit Diagram Page 9
  • 10. MOSQUITO REPELLENT USING FREQUENCY GENERATOR 5.2 Pin diagram Fig 5.2.1 1Pin diagram Page 10
  • 11. MOSQUITO REPELLENT USING FREQUENCY GENERATOR 6. PCB Layout of main circuit Page 11
  • 12. MOSQUITO REPELLENT USING FREQUENCY GENERATOR Fig 7. PCB Layout of main circuit 6.1 Simulation of the project 6.1.1 PCB designing: Page 12
  • 13. MOSQUITO REPELLENT USING FREQUENCY GENERATOR There are many software’s for the design of the PCB viz. express PCB, Eagle PCB, Proteus, Circuit Wizard, Diptress, Protel, Ultiboard . Out of these we have used Circuit Wizard for designing of our project’s PCB. We have tested and checked our circuit and program using circuit wizard software. It is very easy to use and understand the design of project 7. Advantages and Disadvantages:- 7.1 Advantages 1. Non Harmful to humans as frequency used is ultrasonic Page 13
  • 14. MOSQUITO REPELLENT USING FREQUENCY GENERATOR 2. No ill odour generated 3. Simple construction 4. Handling is easy 5. Low Cost device 6. No need of AC mains supply 7. Battery can be replaced by solar charger 7.2 Disadvantage 1. Cannot be used for wide range 8. APPLICATION OF PROJECT: Page 14
  • 15. MOSQUITO REPELLENT USING FREQUENCY GENERATOR 1.Mostly used in household applications 2.Can be used in Hospitals 3.Can be used in tents during trekking 4. In rooms with no electricity 9. References 1. Circuit garage Page 15
  • 16. MOSQUITO REPELLENT USING FREQUENCY GENERATOR 2. Electronics for you 3. Datasheet of IC 555 4. Electronics magazine 5. Mosquito Repellent Effectiveness: A placebo controlled trial comparing 95% DEET, Avon skin so soft, & a special mixture – Richard Beever, MD. 6. International journal of Pharmaceutical, Biological & chemical sciences 10. Cost of project SR.NO COMPONENTS QUANTITY PRICE(Rs.) Page 16
  • 17. MOSQUITO REPELLENT USING FREQUENCY GENERATOR 1 2 3 4 5 6 7 8 9 10 PCB Layout IC1 7555 Timer Diode 1N4007(Rectifier Diode) Resistor1(R1=65k ohms) Resistor2(R2=100 ohms) Capacitor1(C1=470 micro F)Electro Capacitor2(C2=0.2 pico F) Ceramic Capacitor3(C3=0.01 micro F) Ceramic Battery supply(12V) Switch 1 1 1 1 1 1 1 1 1 80 10 1 1 1 1 1 1 40 5 11. Conclusion:- Thus we have seen that the Resistors R1,R2 & Capacitor C1 generates the desired frequency i.e., above 30K ohms which is the suitable range for our project. Thus mosquito repellent works efficiently as a frequency generator. Page 17
  • 18. MOSQUITO REPELLENT USING FREQUENCY GENERATOR Page 18