A device to detect human presence in the collapsed building due to an earthquake has been designed using the Passive Infrared (PIR) HC-SR501 sensor. The system works on the principle of sensing infrared radiation emitted by objects. Infrared radiation sensed by the PIR HC-SR501 sensor is converted into an electrical signal. The signal is then processed by the microcontroller in the Arduino Uno R3 module with the Arduino IDE programming language. The result is the activation of the buzzer as an alarm and a warning in the form of “Infrared Detected Any Human” on the Liquid Crystal Display (LCD) when a human is detected. A tool in the form of a stick that will be inserted into the cracks of the collapsed building to determine the position of the victim in the rubble. This can reduce the risk of victims dying from the evacuation of victims by means of heavy equipment. Based on testing of the tools that have been carried out, it can be concluded that the tool can detect moving victims with a human distance from the sensor ranging from 1 m to 7 m. A motionless human detector can only be as far as 30 cm, the angle of detection is 60 °, the minimum gap width that can be detected is 1.5 cm. The sensor also cannot detect humans if there is material blocking the sensor, this is influenced by the thickness and type of barrier. In addition, the sensors can also detect objects other than humans but within a shorter range. Keywords: PIR, earthquake, evacuation of victims, human detectors, ruins
Rima, Suhartinah (2019) RANCANG BANGUN SISTEM BERBASIS SENSOR INFRARED UNTUK MENDETEKSI MANUSIA YANG TERKUBUR DI BAWAH RERUNTUHAN PASCA GEMPABUMI. Diploma thesis, Universitas Andalas.