Energy is nowadays conserved by using Presence Sensors in residential and industrial applications. These are slightly different from Motion Sensors in that, they detect human presence instead of motion. They form an integral component of automation systems in homes and use various protocols like KNX, Modbus and Lonworks. Vacker Saudi Arabia or KSA supplies various models of Presence Sensors such as ceiling mounted, wall-mounted, etc. in regions or areas such as Riyadh, Al Khobar, Dammam, Jeddah, etc.
The Operating Principle of Presence Detectors, Presence Sensors, Occupancy Sensors
Humans need to be present in the area for the Presence Sensors to operate. Another tem used synonymously with them is Occupancy Sensors which refers to the occupation of a room by someone. Vacker Saudi Arabia or KSA supplies Presence Sensors in indoor and outdoor models consisting of diverse levels of ingress protection to Dammam, Riyadh, Al Khobar, Jeddah, etc.
How does a Presence Sensor work?
A Presence Sensor can check for someone's presence in the area. It can detect presence even while the person remains idle. The working principle of a Presence Sensor is based on the temperature generated by the human body. It can detect the heat of the body while it is present in the area. So, the switching circuit remains on at this stage and turns off when not present.
PIR Sensor or Passive Infrared Sensor
PIR Sensor or Passive Infrared Sensor is one of the most common type of presence detector. They do not generate infrared rays and can detect heat generated in the body. They can also detect other living beings such as dogs, cats, birds, etc. but cannot distinguish between them. Sensing technologies like ultrasonic sensors are used together so that together they can detect both presence and motion.
Difference among Motion Sensors and Presence Sensors
A Motion Sensor can be used in corridors. It is activated if a person comes in and also its associated lights are switch on. If there is no motion of a person then the circuit is switched off since it no motion is detected. If there is a slight hand movement by the person then motion is sensed. If the same action was performed using a presence sensor instead of a motion sensor, then the circuit would not have turned off and it would have continued detecting the person with or without any motion.