HansITAcademy

There are numerous physical security sensors that are located throughout the company to protect its resources.  Variety of sensors with different purposes are placed strategically in critical locations.  Let’s go over them.

First, we have proximity reader sensors.  Proximity readers continuously transmit a low-level fixed radio frequency signal.  These signals provide energy to the small coil inside a card.  When the small coil inside the card is powered up by the radio frequency signal, it powers up the card’s microchip which contains a unique identification code and it transmits the code to the reader. This is ultimately to authenticate a person for entry.

Then we have motion and noise detection sensors.  Infrared for example uses light to detect motion and is a motion sensor.  Infrared sensors are placed in areas where intruders would most likely enter and are turned on when necessary.  Photoelectric beam is another motion detection sensor that uses invisible IR light that can transmit up to 100 meters.  

Then we have microphone sensors that use electromagnetic spectrum and are based on audio spectrum.  These are usually placed near a door and are turned on as needed.

Then we have moisture detection sensors.  We’ve talked about fire detection sensors before here and how fire suppression systems work.  This is pretty much the same thing but for moisture and a lot simpler.  Moisture detection usually exists in a server room where it might have a significant impact.  These sensors are used to detect even small amounts of water from ceiling as well as on the floor.