Development of soft-core system for estimation of blood haemoglobin

Abstract

This paper is about designing of NIOS II soft-core processor system for blood Haemoglobin estimation. In today's world the Monitoring Haemoglobin is very important in hospitals to keep track of low haemoglobin count during operations, delivery, dialysis patient etc which are often done using invasive methods. We have designed soft-core processor by interfacing two LED's 660nm and 940nm with a single silicon photo-detector with inbuilt transimpedance amplifier on a finger probe to measure the concentration of oxyhaemoglobin and deoxy-haemoglobin at specific wavelengths. The designed system has various applications in Hospitals and in house monitoring system to monitor the total haemoglobin level. We have tested our system over 5 subjects and the results obtained were also verified with invasive method in pathology laboratory. It was found that the readings taken were close to the Invasive method.