To provide an easy and fast means of identification of blood group using IR sensors

Identification of blood group plays a vital role in the medical field for any treatment. Miss-transfusion of blood will lead to many complications. This method provides an easy and fast means of identification of blood groups. The difference in the amount absorption by each blood group is exploited so as to categorize the blood groups. The light from the pulsating IR LED is passed through the blood sample and the transmitted light is then detected, conditioned and is converted into voltage signal. The variations in the intensity of the received signal due to the absorption of blood for different blood groups are translated into corresponding voltage changes, to classify the blood groups.