Glucometer or Blood Glucose Monitor is a device for measuring levels of glucose concentration in the blood. This device is usually portable and is used at home for monitoring diabetic-patients. Diabetes is one of the most common diseases today. It is essential to produce glucometers whose one of many advantages is to empower diabetics to take care of themselves without the need to visit doctors. Glucometers help to detect and confirm hypoglycemia and infections. High blood sugar may also be a sign of infection or illness that needs to be treated. Medical Electronics combinational devices target this new market and not only is power consumption a target, but bringing a better solution for disease control.

Glucometry is a technique that obtains the value of glucose concentration in peripheral or central blood. These values expressed either in mgr/dl or mmol are important clinical values for metabolic disorders such as diabetes mellitus, denutrition, and other consequences like hyperosmolar coma, malabsorption syndrome, and most critical hypoglycemia. A glucometer and proper pharmaceutical treatment is fundamental for glycemic control of diabetic patients. At home, some glucometers include different kinds of strips to monitor other variables such as ketones which are produced when a patient is experiencing hyperglycemia.

Electronics Design of Glucometer – Blood Glucose Monitor System

Design of Glucometer - Blood Glucose Monitor

Block Diagram of Glucometer - Blood Glucose Monitor

Figure shows a general diagram of a blood pressure monitor. It shows different peripherals for communication between the user and the device. The most important part is the test strip, this is the glucose sensor to collocate the blood and get a determined measurement with the analog-to-digital converter (ADC) of the microcontroller unit (MCU). The other peripherals are LCD display, and Bluetooth wireless interface.

Design of Glucometer is explained in detail in an application note offered by Freescale Semconductor. This document describes a combinational medical device designed to integrate both a low-end glucometer and a blood pressure monitor. Link to this design document is: http://www.freescale.com.cn/files/microcontrollers/doc/app_note/AN4025.pdf