Automatic Room Power Control / Nailah Amirudin

Amirudin, Nailah (2005) Automatic Room Power Control / Nailah Amirudin. [Student Project] (Unpublished)

Abstract

Have you ever thought is there a person in your room? Occasionally, people build a circuit for 'Automatic Room Power Control’ only got one light sensor. This when the person get into the room the lights will become ‘on’ and when the person leave the room the light becomes ‘off. But what happen if two persons get into the room at the same time. This is certainly will remains the lights ‘off all the time. So, to overcome this problem we have made a circuit that will ‘on’ and ‘off the lights according to it desired fashion. This is where it used two light diode resistors (LDR) This placed one after another so that it will separately sense a person getting into the room or coming out of the room. This circuit has a small memory which enables it to automatically switch ‘on’ and switch ‘off the lights to it desired fashion. Output of two LED , after it has been processes, are used with bi-colour LED so that when a person getting into a room it emits green light and when the person coming out of the room it emits red light. It is then applied to two decade counter. This is where when persons getting into a room, one of the counters will count upwards. While the other counter will count downwards. The next stage comprises two logic ICs which combine the outputs of the two decade counters and determine if there are still persons left the room or not. This circuit has a maximum number of persons that are limited to four since it reset on the fifth clock pulse using the counters. It used up to +9V power supply. -

Metadata

Item Type: Student Project
Creators:
Creators
Email / ID Num.
Amirudin, Nailah
99078938
Contributors:
Contribution
Name
Email / ID Num.
Advisor
Ismail, Jamilah
UNSPECIFIED
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Apparatus and materials
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Apparatus and materials > Antennas
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Apparatus and materials > Semiconductors
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Apparatus and materials > Detectors. Sensors. Sensor networks
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Microelectromechanical systems
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Applications of electronics
T Technology > TK Electrical engineering. Electronics. Nuclear engineering > Electronics > Information display systems
Divisions: Universiti Teknologi MARA, Pulau Pinang > Permatang Pauh Campus > Faculty of Electrical Engineering
Programme: Diploma in Electrical Engineering
Keywords: light sensor, light diode resistors, circuit
Date: 2005
URI: https://ir.uitm.edu.my/id/eprint/54110
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