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What is the principle of wireless remote control? The principle of wireless remote control is introduced

2022-08-29 17:03

Nowadays, our wireless remote controls abound in our lives, and every household is using them. For example, our TVs, air conditioners and other home appliances are extremely common, so what are the functions of wireless remote controls based on? Well, let me introduce it to you in detail.​​


The wireless remote control brings great convenience to our daily life. It is unknown who the inventor of the remote control is. Our remote control today is a configuration that uses a remote control to control the machine. Its structure is composed of integrated circuit boards. and buttons that send out different messages.

With the advancement of technology, the types of our wireless remote controls have also increased. There are usually two types, one is infrared remote control, which is mostly used by our household appliances, and the other is the radio rocker control mode. Each has different characteristics, and the scope of use is also different.​​


Infrared remote control:

It is a remote control device that sends out control messages according to the infrared rays in the 0.76-1.5μm. Generally, its system is divided into two types: receiving and transmitting. The receiving is mainly realized by infrared receiving diodes. There are two types: square and round. When using, add reverse bias to the infrared receiving diode, and it can work normally, that is to say, when we use the infrared receiving diode, the infrared receiving diode is used in the circuit in reverse, so as to achieve higher sensitivity.

However, the transmit power of infrared receiving diodes is usually very weak, so in recent years, we usually use finished infrared receiving heads to enhance the weak signals received by the infrared receiving diodes and the amplification circuit.​​


The emitting part is mainly infrared light-emitting diode, and its internal material is different from that of ordinary light-emitting diodes, so when we apply an appropriate voltage to its two ends, it will emit infrared light instead of visible light, which is a very special diode.​​


The advantages of infrared remote control:

It will not affect the surrounding environment, and will not interfere with other electrical devices. We can use the same remote control for household appliances in different houses, because the infrared remote control cannot penetrate the wall, so there will be no interference. It is easy to debug the circuit, usually we can use it without any debugging, as long as the connection is correct according to the specified circuit. The codec is simple, and multi-channel remote control is also possible. Therefore, infrared remote control is widely used in our household appliances.

Radio remote control:

The control of various institutions in the distance is realized by the use of radio signals. When the equipment receives these messages, it can be other corresponding machinery and equipment to complete the corresponding work. This kind of remote control is also divided into two types: transmitting and receiving. part.