Perancangan Alat Hitung Pengunjung Perpustakaan Menggunakan Sensor Pir Dan Bluetooth Berbasis Arduino Uno

Abstract

PIR sensor utilization in a room or a company can be used as a visitor counters that have been entering the room , making it easier to know the number of visitors without having to calculate the level number of visitors every day . Sensor PIR (Passive Infra Red ) is an infrared -based sensor . However , unlike most of the infrared sensor consisting of LED and phototransistor . This sensor only responds to the energy of a passive infrared rays possessed by each object detected by it . Objects that can be detected by these sensors usually is the human body . By using the PIR sensor can design a prototype system for recording visitors on ruagan using sensor pir (passive infra red) menjadei easier to use technology that smartphone as a display designation .