Some people say that the history of human scientific progress is actually the history of human trying to be lazy. In order not to climb stairs, humans invented elevators; In order not to walk, bicycles, motorcycles and cars were invented; In order to cook without burning fire, gas stoves, electric cookers and induction cookers were invented ... Finally, human beings were too lazy to press the switch in the past, so they invented the remote control switch.

Although the above is just a joke, the general trend of modern science and technology development is simplification, automation and intelligence. With the improvement of life quality, the traditional manual switch can no longer meet people's pursuit of perfect living space, and digital wireless remote control technology came into being. As one of the products commonly used in modern families, remote control switch is familiar to many people. Whether it is an electrical remote control switch or a lighting remote control switch, people deeply feel the infinite convenience and fun brought by high technology to life. At the same time, I wonder if you have seriously studied the scientific principle behind the remote control switch?

Remote control switch consists of remote control and switch, namely transmitter and receiver. When we use the remote controller, that is, the transmitter, the transmitter can encode different control electrical signals, and then convert them into wireless signals after wireless modulation or infrared modulation and transmit them. At this time, the switch receives the wireless signal containing the control information, then decodes it to obtain the original electrical signal, and then amplifies the power of the electrical signal to drive the related components. Simply put, the remote controller is an encoder, which encodes electrical signals into wireless signals; The switch is a decoder, which decodes wireless signals into electrical signals. The whole remote control process is the process of converting electrical signals into wireless signals and then back to electrical signals.

The biggest advantage of remote control switch is non-contact remote control in time and accurately. Wireless remote control switch is a flexible control system besides replacing traditional manual switch. The advantages of the new wireless remote control switch are embodied in many aspects.

The traditional infrared remote control device is generally limited by direction and space, while the wireless remote control switch has the function of non-directional remote partition control. The remote control switch with radio frequency technology can generally achieve signal coverage at a distance of 20- 100 meters and can pass through two or three walls. At the same time, the switches adopt wireless digital identification technology, and each switch has its own independent address code, which will not interfere with each other. There are basically no duplicate codes in the same city, so you don't have to worry that your neighbor's remote control will control your own appliances. In addition, the wireless remote control switch also has the intelligent code learning function, which can realize the separate configuration of the remote control and the switch, making the control more flexible and convenient.