ANALYSIS OF FLEX SENSOR OPERATION USING PROTEUS IN THE ARTHRITIS KNEE JOINT APPLICATION
Arthritis is a condition in which inflammation occurs in joints, but it is frequently happened in the knee. Knee arthritis will make it difficult to perform simple tasks like walking or ascending stairs. This study aims to detect the bending of the leg and provide movement for patients in need by creating a sensing machine such as a flex sensor. A flex sensor is a device that detects when something bends. Plastic and carbon are two components that can be used to create this sensor. The carbon surface is arranged on a plastic strip which when the strip is turned aside then the sensor's resistance is adjusted. To test the hypothesis that a flex sensor could detect the bending of the leg and provide movement for patients, the simulation of the flex sensor is created by Proteus. The theory from the simulation circuit is based on the resistance on the flex sensor and the recorded output voltage. The results showed higher the resistance recorded, the lower for output voltage. These results suggest that using the correct Arduino board types to solve the practical problem in doing simulation. Due to the LCD could not give the demand of output voltage.