Issuu

International Research Journal of Engineering and Technology (IRJET) Volume: 11 Issue: 04 | Apr 2024

www.irjet.net

e-ISSN: 2395-0056 p-ISSN: 2395-0072

DESIGN AND ANALYSIS OF LDR BASED LASER SECURITY SYSTEM Ajit Kumar Patro1, Kanha Mirdha2, Subha Prasad Behera2 , Piyush Patel2 , Abhishek Tripathy2 1Associate Professor, ECE department, GIETU, Gunupur, Odisha 2UG Scholar, GIETU, Gunupur, Odisha

---------------------------------------------------------------------***--------------------------------------------------------------------

Abstract - The Laser Security Alarm System is an

an alarm or alerts security or an alarm notification in system. Personal, ensuring that any potential threat is addressed promptly. This system is widely used in a variety of applications, including residential properties, commercial establishments, industrial facilities, and perimeter protection security areas. Homes can have these laser systems installed by a professional person or by you on your own. Technology advancements have significantly reduced the cost of security systems. Making laser systems is therefore among the least expensive security system options. It is capable of operating continually. A receiver module (laser receiver) is used to to receive the laser beam. With features like adjustable sensitivity, dual-beam technology, and real-time monitoring [5]. The laser security alarm stands at the forefront of modern perimeter protection, providing a robust defense for residential, commercial, and industrial environments [6]. With precise It is advanced home security system which can be accessed wireless by network system [7]. Laser beam is an advanced security system which is helpful in every field of defensing [8].

innovative and highly effective technology designed to enhance security in various applications. This system utilizes laser beams to create a protective perimeter and detect unauthorized intrusions. The fundamental concept revolves around the interruption of the laser beam, triggering an alarm or alert when an intrusion is detected. This abstract provides the gist knowledge of the key components and working of the Laser Security Alarm System. The core components include a laser emitter, a laser receiver, LDR and an alarm unit. The emitter projects an invisible laser beam, typically across a defined area or boundary. The receiver is responsible for continuously monitoring the laser beam. When an intrusion, such as a person or object, obstructs the laser path, the receiver sends a signal to the alarm unit, which then activates an alert mechanism. This alert can take various forms, including audible alarms, notifications to security personnel, or integrated surveillance system activation.

Key Words: Laser Security Alarm, Photodector, Buzzer Alarm, Transistor, Resistor, Torch-LDR

1.2 LITERATURE REVIEW:

1. INTRODUCTION

A laser security system which is based on the principal voltage divider circuit and LDR. When laser beam falls on the LDR the voltage across it is low and resistance of LDR decreases. As soon as anyone interrupts the laser beam the alarm triggers in circuit [9]. Designed a laser light security which cover a large area. When any person or object cross the laser line the security alarm will ringing and focus light will “ON” [10]. Home automation security with laser lights that interfaces with web pages and mobile apps. Passive infrared sensors are installed at a selected area to be protected. LED lights used because it consumes less energy [11]. Eco-friendly laser alarm system using LDR.It consists of two main circuit, the laser unit and LDR sensory alarm unit with rechargeable battery powered by solar energy. LDR is controlled by using Arduino [12]. Working principle and advantages of laser security alarm system. LDR is used as a sensor. It can be used for the water leakage over the cities [13]. Home automation security alert system that interfaces with windows 10 mobile application. It consists of laser, lights, alarm and python programmed which is connected to mobile through applications with triggering messages [14]. Intelligent theft detection alarm system based on laser fence and

In an increasingly interconnected world, security has become a permanent concern for both individuals and businesses. To address this need, technological advancements have given rise to innovative security solutions, one of which is the Laser Security Alarm System [1]. For security systems, there are two essential components. Laser beam is a narrow beam that does not spread out like a lightbulb or flashlight does. Furthermore, laser light only has one colour. Laser light can be sent a long distance and still have enough energy in a limited area and can activate the photodetector security system because it does not spread out very much [2]. Due to its single wave length, the detector can be fitted with a blocking filter that allows laser light to pass through while keeping background light out of the detector. The path of the laser light is straight. This cutting-edge system combines the precision of laser technology with the effectiveness of alarms to create a robust and reliable security setup [3]. The Laser Security Alarm System is designed to detect unknown intrusions into a defined area by utilizing laser beams as a protective barrier [4]. When an intruder disrupts these laser beams, the system triggers

Impact Factor value: 8.226

ISO 9001:2008 Certified Journal

Page 884