Burglar Alarm System- Securing Premises From the Evil Eye of Intruders

  • Wireless — Wi-Fi, Bluetooth, or any other radio technology is used as a mode of connection between appliances
  • Hybrid — it consists of a combination of wired and wireless equipment communicating with the main system

How burglar alarms work

Isn’t it interesting to see how automation has taken over manual security systems? We see the alarms going on in case of any intrusion. What we don’t see is the complex network of sensors and detectors integrated with the control panel that identify any kind of physical breach in the premises and alert the concerned people. This whole process is taken care of by computers and machines, easing the security-related steps on humans.

Step 1 — Detection

First and foremost of all, specific hardware needs to be installed on the premises that are capable of detecting any intrusion-related activity. This hardware greatly varies with needs, environment, and type of protection owner needs. So this step is taken care of by sensors which detect a change in the typical environment and informs the control panel about the same. Each sensor varies in its working and can be further customized according to the spaces.

Active Infrared Motion Sensor

An active infrared motion sensor emits infrared light from the end and the receiver on the other end receives the signal. If that electrical beam is cut off by any object between the emitter and the receiver, it triggers the alarms.

Passive Infrared Motion Sensor

Unlike the active sensor, a passive infrared sensor doesn’t emit any light of their own. Instead, it detects the infrared energy radiated by an individual. These are programmed to detect human temperatures.

Ultrasonic Motion Sensor

These sensors send out ultrasonic sound waves that are inaudible to the human ear. These sounds waves bounce back from the other end in a specific time. Any change in the timing of the sound waves received due to an obstacle in between sends out a signal about the same.

Tomographic Motion Sensor

These are usually used at wider and larger places. It consists of a network of nodes spread across an area, communicating with each other, and detects a motion when someone passes from those nodes.

Door and Window Sensor

When armed, door and window sensors detect and set the alarm whenever doors and windows are opened. These can be installed on the frame near the hinges that get activated when on the movement of the same.

Glass Break Sensor

Glass break sensor is capable of sensing loud noise and vibration of glass breaking. These are usually installed directly on the glass or can be installed at a place surrounded by glass for optimum utilization.

Step 2 — Verification

The control unit is the brain of the burglar alarm system. This contains the circuit board, power supply, batteries for the units, and keyboard to access it. Smart systems can be connected to the cloud and the main security management software via the internet for data safety, easy access, data analytics, and receive alerts remotely on any device. Multiple control units or alarm panels can be spread across large areas for easy access with the master unit being the most important. This is where signals from all the sensors are received, analyzed, and verified by the user.

Step 3 — Notification

Notification here refers to the alerts sent to the user, system, and the concerned authorities. Once the burglar alarm system verifies that the alerts are made to any crime or after multiple failed attempts to verify the alarm, the burglar alarm system contacts the local authorities or emergency response teams according to the programming.

Applications of Burglar alarm system

Burglar alarm systems can be used in a diverse range of applications, including:

  • Residential homes and garages
  • Commercial premises including shops, restaurants, and hotels
  • High-security areas such as banks, ATMs, lockers, etc.
  • Storage and warehouse facilities

Maintenance of burglar alarm system

No matter how good a machine is. It needs to be regularly checked to reduce issues and increase its working life. The system should be checked once or twice a year to keep it well-run and updated.



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