RANCANG BANGUN SISTEM APLIKASI PEMBERHENTIAN MOTOR DC SECARA OTOMATIS MENGGUNAKAN SENSOR JARAK ULTRASONIK BERBASIS MIKROKONTROLER AVR ATMega8535

Abstract

The Planning and realization of application system to stop motor DC automatically using ultrasonic range censor based on microcontroller AVR ATMega8535 has been done. System consist of hardware and software. Hardware consists of ultrasonic range censor, ATMega8535 microcontroller, LCD ( Liquid Crystal Display), relay and DC motor. Ultrasonic transmitter sends a signal with frequency of 40KHz. In the moment of this delivery will activate the internal timer of microcontroller, and will desist when bound signal accepted by receiver. This data is then processed by microcontroller become distance and presented by LCD. When appearance at the LCD shows scale of 30 cm, relay will open so that motor DC desist. The realization of the system has been done and can measure distance with mistake tolerance of 2% and can give command to stop DC motor.