Development of a blood pressure alarm detector based on seven-segment light emitting diode display.

Abstract

This paper introduces the development of a blood pressure alarm detector, meant to be incorporated into an electronic blood pressure tracking unit, from which it detects signals for the measured blood pressure (BP), that is, the systolic blood pressure (SBP) and diastolic blood pressure (DBP). It simultaneously displays the measured blood pressure reading with the beeping of alarm, if the BP reading is below or above normal blood pressure range, and also displays the messages ‘bnor\' (for below normal), ‘nor\' (for normal) and ‘anor\' (for above normal). This is achieved by an internal timing unit, which determines the generation of an alarm, using the 8051 microprocessor. The seven-segment light emitting diode (LED) display is used to display the measured BP readings and the messages for below, normal, and above BP range. The mains or battery can either power this detector.

Keywords: blood pressure, blood pressure range, detector, microprocessor, seven-segment LED display, alarm.

Journal of Biomedical Investigation Vol. 3 (1) 2005: pp. 15-19