IoT: Theft detection of the mosque charity box through Arduino R3 with HC-SR501 sensor and MC-38 sensor

Abstract

The purpose of this research is to detect and store data on theft of mosque charity boxes using the Internet of Things (IoT) by activating short message notifications on smartphones and database servers through a web framework. The focus of this research is the use of Arduino R3 as a microcontroller that regulates the detection of theft of a mosque’s charity box with a passive infrared sensor HC-SR501, a magnetic switch sensor MC-38, and sending short message notifications and storing detection results to a database server. Arduino R3 is used as a microcontroller with a program that can be recycled using the Arduino IDE, while the HC-SR501 passive infrared sensor is used to detect human movement with changes in body heat, through infrared rays emitted by a Fresnel lens, then identified by the pyroelectric sensor made from gallium nitride (GaN), cesium nitrate (CsNO3) and lithium tantalate (LiTaO3), a change in heat temperature then activates the buzzer when a hot object is detected. Whereas the MC-38 magnetic switch sensor functions to turn on the buzzer when the mosque charity box is forcibly opened by a thief with a normally closed and normally open angle. The results obtained from this study are testing the MC-38 magnetic sensor has two working modes, namely normally close when the two beam blades fuse within a distance of < 3 cm, above a distance of > 3 cm, normally open, meaning that the conditions are not safe. While the test results of the HC-SR501 PIR sensor have the ability to detect body movements with a minimum reading distance of 30 cm and a maximum of 10 m, with LOW results if not detected and High if detected by human objects.