How to use RFID technology in smart home,Contactless Card

　　How to use RFID technology in smart home

　　At present, the intelligence of smart home life depends on the effectiveness and reliability of information transmission, which mainly include wired transmission and wireless transmission. Wired transmission has disadvantages such as complex wiring, poor scalability, inconsistent standards, and difficult construction, and it is difficult to obtain a large market space. RFID wireless radio frequency technology is a short-range, low-complexity, low-data rate, low-cost wireless communication technology, because it does not require rewiring, and uses point-to-point radio frequency technology to realize the control of home appliances, lights and other equipment, and installation comparisons It is convenient and simple to control, and has been widely used in smart homes in recent years. Therefore, information transmission based on radio frequency technology to realize intelligent life is the focus of current smart home research, which will provide people with an efficient, comfortable, safe and convenient living environment. The smart home system is an efficient, comfortable, safe, convenient and environmentally friendly home living environment that integrates automation, informatization, and intelligence by using computers, embedded systems and communication network technologies.

　　RFID wireless radio frequency technology is a wireless communication technology with short distance, low complexity, low power consumption, low data rate and low cost. The advantage of this technology is that some products do not need to be rewired, and the point-to-point radio frequency technology is used to realize the control of home appliances and lights, and the installation and settings are relatively convenient. This type of system has relatively weak functions, relatively simple control methods, and is susceptible to interference and anti-theft by the surrounding wireless equipment environment, especially the same frequency and obstacles; it is more suitable for newly renovated and renovated households.

　　Ordinary household or commercial receivers usually use infrared (IF), and signal transmission and reception requires a straight path, which is easily blocked by foreign objects. Using RFID wireless radio frequency technology, the signal transmission and reception is not blocked by foreign objects. If the system is within the coverage range, the system can cover a range of up to 100 meters in an open environment. In addition, RFID radio frequency has low power consumption, wide coverage and accurate and reliable reception regardless of any orientation or angle. Taking a 200-square-meter house as an example, the indoor length is about 30 meters, so based on the coverage of 100 meters, no matter where the user goes, each switch can receive the command of the remote control switch. Each remote switch, switch or dimmer switch is equipped with a radio frequency transmitter or receiver, so the remote control switch can send commands directly to each switch to control the preset lighting situation without connecting any wires.

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