Perancangan Alat Pengaman Ruangan Menggunakan Sensor Pir (Passive Infrared) Berbasis Mikrokontroller Atmega328

Abstract

To maintain the security of a building that has plenty of room, the room needed a security system installed in each room. The purpose of this research is to create a security system HCR501 room with PIR sensor as an infrared detector emitted a human body. When the sensor detects the presence of a person entering the room, the microcontroller will activate a warning sound address that has been stored in the IC microcontroller ATMEGA328 and warning voice will be heard through the speakers or called buzzer. HCR501 PIR sensor output voltage is 12 V when the sensor detects objects and 0 V when not detect objects. , The signals received by the sensor comes from infrared radiation the human body. The maximum distance range sensor detects objects as far as 3 meters with a maximum angle range of 60º. Range of the sensor is not affected by temperature, humidity and light intensity of the room.