How do the presence sensors work?

Updated: Nov 27, 2019




Residential automation is a rising trend. People want to facilitate and simplify their life, all without giving up security, and for this, use the best equipment on the market for such purposes as presence sensors.


The equipment can be found in homes, shops and in various environments, be they internal or external, in order to detect strange movements and thus trigger safety systems and keep the place always protected, but do you know exactly how they work?


If the answer is no, then the time has come to know, and if it is positive, it is always important to learn even more about it! Know the ways of working a presence sensor and see why it is simply indispensable when talking about residential automation.



How does a presence sensor work?


Generally, it occurs by means of two technologies, being the detection of movement or the change of temperature, that can appear of isolated way or joint in the apparatuses.

There are several types of equipment, such as capacitive, Doppler, inductive, magnetic, optical, radar, sonar, ultrasonic or fiber optic sensors, among others, but the most common are movement and temperature sensors. Learn more about these two types:


Motion Detection: The device emits microwaves, which can not be seen by our eyes. If it identifies some kind of different movement, which will cause a different reverberation of the waves, then it will be triggered.

Temperature change: Through sensors, usually infrared, they analyze the temperature of the environment. If someone enters the environment, it will make the place warm, even if it is a minimal variation, thanks to human heat, and this will be identified by the infrared, which results in the activation of the equipment.



What are the key benefits of a presence sensor?


The ones that stand out the most:


Power saving: one of the most common applications is to spend less electricity, since the lamps can be connected to the sensor. They are turned off, and as soon as some change is detected, whether it is temperature or movement, according to the type of sensor, then the lights are triggered temporarily, which is good for cutting costs with energy and also to help the environment .


Security: Another much desired application is for security purposes. It is possible, for example, to keep the sectors driven in places where there is usually no movement, such as in the stockroom or in closed rooms, and to know when there is any change through the sensors. They can also be installed throughout the environment and stay connected when the location is closed, so that any movement will result in your drive.


Enhancement of the environment: residential, commercial and other automation environments can increase your security and cut costs with energy, but also has the potential to enhance the site. The lease of a property, be it residential, commercial or industrial, can have a higher value if it is automated with sensors, which is advantageous for its owners and also for who will use it.



Invest in presence sensors for flawless residential automation


Among the automation equipment for homes, businesses and industries, the presence sensors are fundamental, since they increase the functionality of the place, make it more safe and efficient and, of break, do not interfere in its design, since there are very small models and discrete.



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