In ancient times, humans used natural light sources. The sun gave humans and all living things a chance to survive, but they were powerless 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, lighting switches on the market are also emerging in endlessly, 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, if you want the light to turn on, you need to cough loudly or stomp your feet. 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 sounds in nature (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.
Application scenarios
Human body induction switches are often used in many general public living places such as stairs, walkways, toilets, elevators, etc. When the human body enters the switch sensing range, the switch microcomputer system can sense the infrared heat release change of the human body movement, and at the same time automatically turn on the lighting lamps, until it senses that the person leaves and delays the preset time and then automatically turns off. "Light up" a lamp for you in the dark night:
1. Used in meeting rooms, office areas, toilets, and basements. It can make people turn on the lights and turn off the lights when they leave, which greatly avoids waste, saves energy for you, and saves you the pain of forgetting to turn off the lights.
2. Used in disinfection room. When a person comes, the disinfection equipment is automatically turned off, and when a person walks, the equipment is automatically turned on. To protect your health.
3. Used in hotels, guesthouses, etc. It replaces the existing card to get electricity, and can also monitor the dynamics of the room. When people come, the power is turned on automatically, and when people go, the main gate is automatically closed. Full of humanity.
4. Used in the bedroom. It can dim the light slowly and then turn it off, or it can dim the light slowly.
5. Used for air conditioning. When you fall asleep at night, or go out during the day, and forget to turn off the air conditioner, it will "monitor" all this and send a signal to your air conditioner that it is time to rest.
6. Used in school and community corridors and garages. It can achieve full light when people come and half light when people walk, and save energy greatly under the premise of ensuring safety.
Precautions
The inductive switch works by detecting the presence or absence of infrared rays on the human body, and is generally installed indoors. The false alarm rate of the human body sensor switch has a great relationship with the installation location and method. The following points should be paid attention to when installing the human body sensor switch:
1. Do not operate with power during installation, and power on after installation.
2. Do not use it beyond the power range.
3. The top-mounted human body induction switch should not be too high from the ground, preferably between 2.4-3.1 meters. The wall-mounted human body sensor switch can be installed in the original switch position and replaced directly.
4. When installing the human body sensor switch, it should be far away from the place where the air temperature changes sensitive such as heating, air conditioner, refrigerator, stove.
5. There shall be no screens, furniture, large bonsai or other partitions within the detection range of the sensor switch.
6. Do not switch the switch directly to the window, to prevent the disturbance of hot air outside the window and the movement of people from causing false alarms.
7. Do not install the switch in places with strong air currents, such as doorways and air ducts.