Surveillance is an important aspect of safety, especially in places such as banks, jewelers and the like. Today, even small hotels and bakeries use surveillance systems to protect their properties. There are currently two types of surveillance systems available.
• Passive surveillance system
• Active monitoring system
Now our goal is to build a passive surveillance system that detects traces of humans when the system is fired. Materials required for this purpose have been listed below.
• Controller board
Arduino is one of the leading platform control boards that provides a learning environment for electronics enthusiasts and students. There are a lot of versions of Arduino board available, but the common and most economical is Arduino UNO r3. It also provides an integrated development environment (IDE) to develop and apply our code.
• Pyroelectric infrared sensor
PIR sensors allow you to detect movement and are primarily used to detect whether a human moves within or outside the range of the sensor. These are small, inexpensive, low power, easy to use and do not wear out. They are commonly found in home appliances and gadgets used in homes or businesses. They are often referred to as PIR, "Passive Infrared", "Pyroelectric" or "Motion IR" sensor. Since it costs around 100 INR no one can afford.
• Servo motor
Two types of servo motors are naturally available. AC and DC servomotors. For all electronic and embedded applications DC servo motor is used because the AC can not be stored in the batteries. A servomotor is similar to the normal DC motor, but it also contains a feedback element and the electronic circuit. The feedback element detects the position of the shaft and allows movement in a particular way. PWM waves are implemented to drive the servomotor. Contains 3 pins. Vcc, GND and Pulse. Normally works in (5-12) V.
• LCD module
Liquid crystal display is most commonly used in electronics projects, since it can print all possible characters, including numerical digits, including special characters. In addition, it does not require any breakout board or drive. Everything is embedded in it so it is easy to use. Here we have used 16 × 2 LCD module.
• Light emitting diode
The most common and emerging electronic component of the 21st century is LED. Wherever you turn around, you can see an LED. It has a unique character, which is able to work in AC and DC. It is cheap, lightweight, portable and capable of being easily replaceable. Here we have used the LED for the purpose of the indication.
• Connections and Protoboards
These are typically prototype building components that are used for the interconnection of external peripherals.