Arduino Uno R3 Based Automatic Station Announcement Using HC-SR04 Ultrasonic Sensor

Abstract

The development of railway transport in Indonesia has progressed rapidly in the last decade, supported by the application of modern technology in railway facilities and infrastructure. This research aims to design and develop an automatic device to provide information to passengers to get ready and be careful when the train approaches the station. The system is designed using HC-SR04 ultrasonic sensors to detect the presence of trains at a distance of about 1 KM from the station, while DFPlayer Mini and speakers are used to deliver the announcement automatically. The system functions without manual control, replacing conventional arrival waiting tones, thus improving the efficiency and accuracy of information delivery. Implementation results show that the system is capable of automatically detecting train arrivals and providing clear information to passengers. This innovation is expected to improve the safety and comfort of railway transport users in Indonesia.