Design and Development of Heart Rate per Minutes Based on Atmega16 Microcontroller with Alarm Warning

Abstract

Sport is an activity to train one's body, not only physically but also spiritually, which is useful for maintaining and improving the quality of one's health. The simplest and most cost-effective exercise is jogging, which is usually done in the morning or evening. Sports activities will stimulate the heart to work extra in pumping blood and will facilitate blood in the body. In order to achieve the maximum benefits, it is really advisable to do sports activities in a regular and well-structured way, because if you exercise excessively, it will be very dangerous if the heart works beyond its normal limits. In this study, a heart rate meter was made which has the principle of controlling and monitoring heart rate per minute, with the hope to make it easier to calculate the heart rate while exercising and provide safety because this tool can inform the normal heart rate when exercising for users. This system is made by using the atmega16 microcontroller as the main module. This monitoring process is carried out by connecting the pulse sensor on the finger whose output is a numeric character on the LCD and the sound of a warning on the buzzer if the heart rate exceeds the normal limit. Based on the results of testing of 20 respondents, the device has been able to calculate heart rate per minute and the buzzer can sound as a warning alarm when detecting heart rate if the heart rate exceeds the normal limit. In addition, the tool designed has a percentage error of 0.72%.