In ancient times, humans made use of natural light sources. The sun gave humans and all living things a chance to survive, but was powerless for humans at night. Then smart humans discovered fire. Lighting with fire should be a milestone in the history of human lighting. In Chinese and foreign history, candles have played an important role, accompany mankind to spend thousands of years slowly, until 1879, the genius inventor Edison added a wonderful stroke to the history of lighting. Electric lights have undoubtedly become an indispensable commodity in modern life.
The traditional lighting system has simple structure, low price and easy installation and use. It has always been the protagonist of the lighting market. With the advancement of technology and the improvement of people's living standards, this kind of lamp has exposed many shortcomings: First, because it is a manual switch , People had to fumble for light switches in the darkness, which brought a lot of inconvenience to people’s lives. Second, there is a serious waste of electricity, especially in schools, factories and other collective living places. Lighting lamps often work during the day when there is sufficient light. This not only wastes electricity, but also causes the bulbs to often burn out. If they cannot be repaired in time, they will be damaged. Produce other inconveniences. Third, the rapid development of electronic technology, automatic control technology, and sensor technology has made people more and more inclined to the automatic control of lighting equipment. The development of modern electronic technology and the changes in people's needs for the quality of life have made traditional switches feel the threat of product upgrading. In response to the problem, the lighting switches on the market are also endless, mainly including sound and light control switches, touch delay switches, infrared induction switches, microwave induction switches, etc. The sound control switch in the corridor is a remote control device. Since the sensing components of the voice control itself are mechanical, they are susceptible to mechanical fatigue, and it is difficult to overcome the image of good sensitivity at the initial installation and low sensitivity in the later stage. Therefore, in the later stage of use, the sound and light control switch can only be triggered by artificial noise. For example, you need to cough loudly or stomp your feet to turn on the light. This obviously disturbs the quietness of others, especially at night, which often affects people who sleep. In addition, the sound and light control is easy to respond to all the loud noises in the natural world (such as thunder, car horns, engine sounds when cars pass by, electric drills in the decoration room, opening and closing of anti-theft doors, etc.), and there are many misoperations. In addition to being easily damaged and unsafe, the touch type has the disadvantages of infectious bacteria, which is difficult to apply in public relations places, especially in places with complicated personnel such as hospitals. However, infrared induction switches can overcome the shortcomings of the above two types of switches, so they shine in actual use. At present, the microwave induction switch has been well received by consumers due to the infrared induction switch of the human body.
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