Wireless security systems can be easily controllable through a wireless remote or a touch tone phone from any place. Here main components of the laser security system are infrared motion sensors and a basic alarm unit. It works based on heat detection from a person’s body in case of any security fault. Based on this alarm unit is triggered. The system alerts the security monitoring person and the local law enforcement body if required. At the same time a high pitched sound also sirens. There are two types of laser beams are available, green and infrared modules. System via an infrared module will be not visible. Another beam like green would be visible to the naked eye and serve as a deterrent purpose.
Laser Security System Locks Working Along With Circuit Diagram
Laser door alarm is based on the interruption of Laser beam. The laser pointer is used as the source of light beam. If somebody tries to break the laser path, then an alarm will be generated in a few seconds. Normally laser door alarm circuit will have two sections. First one, laser transmitter is a laser pointer readily available. This is powered with 3 volt DC supply and fixed on one side of the door frame. The receiver will have a Photo transistor at the front end. We use L14F1 NPN Darlington photo transistor as a laser sensor. Here IC1 is used as a voltage comparator with its inverting input tied to a potential divider R2-R3. We use the inverting input to keep at half supply voltage.
Working Of Laser Security System Lock Along With Circuit Diagram
Non inverting input receives a variable voltage based on the conduction of T1. At the opposite door frame receiver should be fixed and should be properly aligned to the laser beam. The laser beam illuminates the face of photo transistor and starts conducting the voltage. So, this keeps the voltage at pin 3 lower than pin 2 of the IC.
The word LASER stands for Light Amplification by Stimulated Emission of Radiation. These are available in different types like semiconductor, infrared, GaAs laser diode. This has an energy wavelength of approximately 900 nanometers with a beam divergence of 3 million radians i.e. equal to a beam width small beam width.
Laser technology products will calculate distance by measuring the time of flight of very short pulses of infrared light. It is different from the traditional surveying instrument method of measuring phase shifts by comparing the incoming wavelength with the phase of the outgoing light pulse.
Solid objects will reflect back a certain percentage of the emitted light energy. It only needs to be a small percentage for our sensitive detector to pick it. We can measure the time it takes for a laser pulse to travel to the target and back with a reflection. By knowing the constant speed of light we can calculate the distance traveled.
To get increased accuracy our laser process as many as sixty pulses in a single measurement period. Target acquisition times range will be half second. Sophisticated accuracy validation algorithms are in place to ensure a reliable reading.
LTI lasers are completely eye safe and meets FDA Class 1. The radiated light power of our lasers is on the order of 50 micro watts. i.e. approximately one twentieth the light power of a typical TV remote control.
The Laser security systems are high tech innovations that have gained popularity in home and office security systems. These are used to be expensive solutions for security needs. Depending on cost and fast technological advancements laser security systems becoming more adoptable. The features and specifications of the laser security system can be had in detail from the security system dealers who provide high end solutions based on requirement.
Advantages of a Laser Security System
These are easy to install and work at both within as well as outside houses. These are very effective perimeter alarm systems around properties. In indoor systems can utilize the normal power outlets and jacks making them inconspicuous. At outside these can be easily be hidden behind the bushes or plants without causing any damage. They Consume less power when compared to the laser system as the whole, which is expensive.
These laser systems can be installed in homes either by self or by hiring a technical person. By technological innovations cost of the security systems has been cut to a large extent. So, making laser systems one among affordable security system options can be very safe.
It can be designed as a simple electronic project for demonstration in science exhibitions. It can also be made as a mini or major project for electrical or electronic students. When making this laser security system one can know all about laser beams and their installation. While preparing a laser security system, we need to concentrate on the microcontroller program and installed with the laser beam device. When using traditional photo resistors for preparing security systems one has to consider the natural light phenomena. Laser are strong in beam width and can be focused on the perfect target. By using laser security system one can be safe in the case of harmful effects to the body. As the beam width used in the laser security systems are not strong beam widths. Which are used in the cutting devices.
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