PAPER TITLE :DEVELOPMENT OF A LOW COST MICROCONTROLLER - BASED HAEMOGLOBIN METER

FUTA JOURNAL OF ENGINEERING AND ENGINEERING TECHNOLOGY | VOLUME 12 NUMBER 1 2018

Paper Details

  • Author(s) : Adedayo K.D., Ewetumo T. And Konwea I.
  • Abstract:

This work looked at the determination of haemoglobin level in the blood using haemoglobin meter; an instrument for
determining the absorbance value of haemoglobin in a sample of blood in g/dl.The haemoglobin meter was developed
using light emitting diode (LEDs), a phototransistor, operational amplifiers, microcontroller (arduino board), liquid
crystal display and a dark compartment. Samples of blood were smeared on a slide that was fixed between the LED
and, phototransistor in the dark compartment. The LED emits radiation of visible light that pass through the blood
sample which is detected by the phototransistor and is sent to the amplifier that amplifies the signal to a magnitude that
can be picked up by the analog to digital converter (ADC) on the arduino board. The digital signal is then programmed
by the microcontroller unit and the value is displayed on the liquid crystal display. The meter was calibrated against a
standard (SH 120-1) and was examined for the accuracy of haemoglobin level. The developed system performed
favourably well with the standard with a correlation value of0.98 at a percentage of 0.01% and the resolution is 0.001 g/dl.