Design a smart insect repeller using ultrasonic sensor

Design a smart insect repeller using ultrasonic sensor

Design a smart insect repeller circuit using ultrasonic sensor is a project that using an ultrasonic sensor as it’s based on generate frequency which can repel insects in small places. It is design to be a low cost ultrasonic insect repeller. Human beings can’t hear these high-frequency sounds. Unfo...

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Bibliographic Details
Main Author: Nur Najiah, Mohd Nasir
Format: Undergraduates Project Papers
Language:English
Published: 2012
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://umpir.ump.edu.my/id/eprint/4646/
http://umpir.ump.edu.my/id/eprint/4646/
http://umpir.ump.edu.my/id/eprint/4646/1/cd6716_111.pdf
id ump-4646
recordtype eprints
spelling ump-46462015-03-03T09:20:14Z http://umpir.ump.edu.my/id/eprint/4646/ Design a smart insect repeller using ultrasonic sensor Nur Najiah, Mohd Nasir TK Electrical engineering. Electronics Nuclear engineering Design a smart insect repeller circuit using ultrasonic sensor is a project that using an ultrasonic sensor as it’s based on generate frequency which can repel insects in small places. It is design to be a low cost ultrasonic insect repeller. Human beings can’t hear these high-frequency sounds. Unfortunately, all insects do not react at the same ultrasonic frequency. While some insects get repelled at 35 kHz, some others get repelled at 38 to 40 kHz. Thus to increase the effectiveness, frequency of ultrasonic oscillator has to be continuously varied between certain limits. By using this circuit design, frequency of emission of ultrasonic sound is continuously varied step-by-step automatically. For each clock pulse output from op-amp IC1 CA3130 (which is wired here as a low-frequency square wave oscillator), the logic 1 output of IC2 CD4017 (which is a well-known decade counter) shifts from Q0 to Q4. Five presets VR2 through VR6 (one each connected at Q0 to Q4 output pins) are set for different values and connected to pin 7 of IC3 (NE555) electronically. VR1 is used to change clock pulse rate. IC3 is wired as an astable multivibrator operating at a frequency of nearly 80 kHz. Its output is not symmetrical. IC4 is CD4013, a D-type flip-flop which delivers symmetrical 40kHz signals at its Q and Q outputs which are amplified in push-pull mode by transistors T1, T2, T3 and T4 to drive a low-cost, high-frequency piezo tweeter. 2012-06 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/4646/1/cd6716_111.pdf Nur Najiah, Mohd Nasir (2012) Design a smart insect repeller using ultrasonic sensor. Faculty of Electrical & Electronic Engineering, Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:73782&theme=UMP2
repository_type Digital Repository
institution_category Local University
institution Universiti Malaysia Pahang
building UMP Institutional Repository
collection Online Access
language English
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Nur Najiah, Mohd Nasir
Design a smart insect repeller using ultrasonic sensor
description Design a smart insect repeller circuit using ultrasonic sensor is a project that using an ultrasonic sensor as it’s based on generate frequency which can repel insects in small places. It is design to be a low cost ultrasonic insect repeller. Human beings can’t hear these high-frequency sounds. Unfortunately, all insects do not react at the same ultrasonic frequency. While some insects get repelled at 35 kHz, some others get repelled at 38 to 40 kHz. Thus to increase the effectiveness, frequency of ultrasonic oscillator has to be continuously varied between certain limits. By using this circuit design, frequency of emission of ultrasonic sound is continuously varied step-by-step automatically. For each clock pulse output from op-amp IC1 CA3130 (which is wired here as a low-frequency square wave oscillator), the logic 1 output of IC2 CD4017 (which is a well-known decade counter) shifts from Q0 to Q4. Five presets VR2 through VR6 (one each connected at Q0 to Q4 output pins) are set for different values and connected to pin 7 of IC3 (NE555) electronically. VR1 is used to change clock pulse rate. IC3 is wired as an astable multivibrator operating at a frequency of nearly 80 kHz. Its output is not symmetrical. IC4 is CD4013, a D-type flip-flop which delivers symmetrical 40kHz signals at its Q and Q outputs which are amplified in push-pull mode by transistors T1, T2, T3 and T4 to drive a low-cost, high-frequency piezo tweeter.
format Undergraduates Project Papers
author Nur Najiah, Mohd Nasir
author_facet Nur Najiah, Mohd Nasir
author_sort Nur Najiah, Mohd Nasir
title Design a smart insect repeller using ultrasonic sensor
title_short Design a smart insect repeller using ultrasonic sensor
title_full Design a smart insect repeller using ultrasonic sensor
title_fullStr Design a smart insect repeller using ultrasonic sensor
title_full_unstemmed Design a smart insect repeller using ultrasonic sensor
title_sort design a smart insect repeller using ultrasonic sensor
publishDate 2012
url http://umpir.ump.edu.my/id/eprint/4646/
http://umpir.ump.edu.my/id/eprint/4646/
http://umpir.ump.edu.my/id/eprint/4646/1/cd6716_111.pdf
first_indexed 2023-09-18T21:59:25Z
last_indexed 2023-09-18T21:59:25Z
_version_ 1777414298335707136

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