Publications

Abstract : Treadmill is an exercise machine which is used for walking or running while staying in the same place. The proposed system accords a method to control the treadmill speed automatically with respect to the person’s heart rate and Hemoglobin. A low hemoglobin count can leave tired, weak, dizzy and give an increased heart rate to the person. Normal range of Hemoglobin ranges from 14 to 18 for men and 12 to 16 for women, with any reading below 10 being cause for serious concern. Lower-impact exercising such as lifting light weights, aquatic exercise and walking can help keep you safe when you work out with a low hemoglobin count. Also the pulse rate of a person may vary while exercising, according to the medical condition of the person. Since the exercising of the body causes adverse effects on the heart rate, it is important to control the speed of the treadmill to maintain the heart rate in a balanced level. Hence in this proposed system speed of the treadmill is controlled according to the Heart rate when the person has hemoglobin level of normal range or more than normal range. A newly developed LED based sensor system is used to determine the Heart rate and Hemoglobin level noninvasively. The speed of the motor (treadmill) is set differently according to the input heart rate range and Hemoglobin level. Since PMDC motor has higher torque level than the DC motors during lower speeds, it is used for controlling the treadmill. Voltage given to the motor is regulated by a controller by generating PWM signal