Application of infrared in smart home

    Since the British astronomer FW Herschel discovered infrared radiation, the development of infrared transmission technology has gone through more than two centuries. In recent decades, in addition to infrared transmission technology, emerging wireless transmission technologies such as RF, Wifi, Bluetooth, Zigbee, and Z-wave have emerged. Why does infrared transmission technology still have a place in the field of home control? First of all, from a technical perspective, we can analyze the reasons why infrared transmission technology has lasted for a long time. 

    Features of infrared transmission technology

　　Good stability:

　　It uses analog transmission, unlike Bluetooth, RF wireless radio frequency and other technologies that use digital signal transmission, so there is almost no similar signal to interfere with it.

　　Strong confidentiality:

　　Since infrared rays have a short wavelength and poor diffraction ability on obstacles, they are suitable for short-distance transmission.

　　Infrared transmission technology is a technology that uses infrared rays as a carrier to transmit data. In our daily lives, infrared transmission technology can be seen everywhere. The most typical example is that household appliances such as televisions and air conditioners are controlled by infrared remote controls. With the advancement of science and technology and the continuous improvement of people's living standards, people's requirements for smart homes are getting higher and higher. For example, lighting control, background music, security alarms and other aspects are gradually turning to smart control. Because of this, infrared transmission has a strong sense of privacy. For example, when we use infrared remote controls at home, the appliances in our neighbors' homes will not be affected by the control.

　　low cost:

　　Infrared transmission technology is already very mature, and the upstream and downstream industry supply chains are also extremely developed. Compared with wireless transmission technologies such as Bluetooth and Wifi, it has obvious cost advantages.

　　Although infrared transmission technology still has some defects, such as short transmission distance and small communication angle, the above advantages make it always competitive. Not only do home appliance manufacturers always stick to it, but infrared transmission has also been widely used in today's smart home field. In the figure below, we can see its application in smart home control systems.