20-03-2012, 03:55 PM
Audotarium power saving using IR
audotarium power saving using IR.docx (Size: 921.12 KB / Downloads: 54)
Abstract:-
This is first and most popular application of multichannel IR remote control where micro controller 89C51 is used to switch ON/OFF four different home appliances (like tubelight, bulb, night lamp etc.). One can connect any device which has ON/OFF operation and which works on available domestic supply.
PURPOSE:
This research proposed an eyeglass-type infrared-based home appliance control system for spinal cord injured (SCI) with tetraplegia.and also for power saving
METHOD:
This system is composed of four major components: A headset, an infrared transmitting module, an infrared receiving/signal-processing module, and a main controller, the Intel-8951 microprocessor. This design concept was based on the use of an infrared remote module fastened to the eyeglasses that could allow the convenient control of the input motion on the keys of a remote controller of a home appliance which are all modified with infrared receiving/signal-processing modules. For system evaluation, 12 subjects (4 male, 8 female, 26- 47-years-old were recruited. Six persons without disabilities were in the control group and 6 with SCI with tetraplegia formed the experimental group.
INTRODUCTION
An embedded system is a combination of software and hardware to perform a dedicated task.
Some of the main devices used in embedded products are Microprocessors and Microcontrollers.
Microprocessors are commonly referred to as general purpose processors as they simply accept the inputs, process it and give the output.
In contrast, a microcontroller not only accepts the data as inputs but also manipulates it, interfaces the data with various devices, controls the data and thus finally gives the result.
IR Transmitter:
Infrared (IR) radiation is electromagnetic radiation of a wavelength longer than that of visible light, but shorter than that of microwaves. The name means "below red" (from the Latin infra, "below"), red being the color of visible light with the longest wavelength. Infrared radiation has wavelengths between about 750 nm and 1 mm, spanning five orders of magnitude. A longer wavelength means it has a lower frequency than red, hence "below". Objects generally emit infrared radiation across a spectrum of wavelengths, but only a specific region of the spectrum is of interest because sensors are usually designed only to collect radiation within a specific bandwidth.