MODELING THE DISTRIBUTION OF BODY TEMPERATURE IN MOUNTAIN CLIMBING

• Main Author: Arif Hidayah, Nurul
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/77614
• Institution: Institut Teknologi Bandung

Mountain climbing is a sporting activity that is currently favored by young people with its activities carried out in nature. In mountaineering activities, the human body must face significant challenges, namely extreme temperature changes. Therefore, a study was conducted using Stolwijk and Hardy's body heat distribution model approach. The body is divided into three parts, namely the head, torso, and extremities. Each part is divided into three layers, namely the core layer, muscle layer, and skin layer. The Stolwijk and Hardy body heat distribution model is a system of linear differential equations. The model is viewed from two conditions, namely when the body is at rest and exercising. Each condition is analyzed to see the effect of body temperature evaporation rate, body metabolic rate, and changes in ambient temperature. By varying the values of body metabolic rate and body temperature evaporation rate, it was found that when the body is at rest, the equilibrium temperature of each body part rises if the metabolic rate is increased while the equilibrium temperature of each body part falls if the body temperature evaporation rate is increased. For the model when the body is exercising, results with the same characteristics as the results of the model when the body is resting are obtained. However, the equilibrium temperature of each part when the body is exercising is higher than when the body is resting. By lowering the ambient temperature value, it is found that the equilibrium temperature of each part of the body will decrease, both when the body is at rest and exercise. In this model, pole placement and full-order state observer scenarios are used to control the temperature evaporation rate under the condition that the initial body temperature increases by 10% and 15% and the body metabolism rate under the condition that the initial body temperature decreases by 10% and 15%. With the control signal of the body evaporation rate, it is found that the equilibrium temperature of each body part is reached faster if the initial body temperature rises by 10% while for the control signal of the body metabolism rate, it is found that the equilibrium temperature of each body part is reached faster if the initial body temperature drops by 10%.