Smart Home Appliances do not refer to a single home appliance, but should be a technical system. Among them, wireless communication technology has become the cornerstone of intelligent home appliances. Smart appliances on the market use more wireless technologies, basically adopting ZigBee, infrared, Bluetooth, Wi. The five wireless communication technologies, -Fi and RF, are the authors to popularize these five wireless technologies today. 1, Zigbee In general, smart home appliance control systems using Zigbee technology include Zigbee Coordinator, ZigBee Infrared Control Terminal, and Home Gateway. There are two functional modules in the Zigbee network, one is the Zigbee coordinator, which establishes and manages the Zigbee network; the other is the Zigbee terminal node, which mainly completes the Zigbee network and controls the learning infrared remote control module. Zigbee's coordinator can interact with the home gateway through the RS232 serial port to realize the connection between the wireless control network and the control host. 2, infrared External red transmission, for traditional home appliances, basically use infrared transmission, with the development of intelligent home appliances, large to the refrigerator, small to the socket, all the appliances seem to be labeled with intelligent tags. Infrared is also a way to achieve intelligent upgrade of home appliances, mainly relying on wireless infrared transponders to complete. The wireless infrared transponder is a built-in infrared and transceiver module. It has the function of learning and remembering infrared signals, and can learn and memorize the intelligent products of multiple infrared devices. It can connect the transceiver module, ZigBee wireless signal and infrared wireless signal, and control any household equipment using infrared remote control through the mobile intelligent terminal. Through the wireless infrared transponder, the user can use the smart home application APP on any mobile phone. The electrical equipment is remotely controlled to realize the functions of a plurality of infrared remote controllers. 3, Bluetooth Bluetooth enables terminals to actively publish, retrieve and process information. With the development of Bluetooth, all Bluetooth information appliances can be controlled by a remote control, and even useful information can be shared among these Bluetooth information appliances. The Bluetooth module is a module for wireless transmission using Bluetooth technology. The Bluetooth module communicates with the network environment externally, and the internal communication system plays a very important role in the smart home appliance system. The development process is also highly concerned by the industry. The demand for smart home appliances is growing, and the demand for Bluetooth modules is growing rapidly. 4, Wi-Fi Most of the smart home products currently on the market are based on Wi-Fi wireless IoT technology to achieve intelligent control of home appliances. The main working principle is as follows: the program instruction is issued by the user's own mobile phone, and the system module in the home receives the information and performs appropriate processing on the information, and then the processing result is transmitted to the single chip through Wi-Fi, so that the single chip can do according to the information. The corresponding control command is executed to complete the control command issued by the user, and the final processing result is also fed back to the client. The function that the client needs to complete is mainly the intelligent control of the home appliance, that is, the client sends control information to the server through the Wi-Fi network, and then the server returns the information to the client. 5, RF The radio frequency includes the RFID radio frequency tag, which is a non-contact automatic identification technology. The target object is identified by the radio frequency signal and the relevant data is obtained, and the identification work does not require manual intervention. As a wireless version of the barcode, the RFID technology has waterproofness not possessed by the barcode. , anti-magnetic, high temperature resistance, long service life, large reading distance, data on the label can be encrypted, storage data capacity is larger, storage information is freely changed. RFID radio tags are believed to be widely used in smart refrigerators, eventually replacing the bar codes that need to be used today. Each RFID tag represents a unique number for each product, rather than a bar code tracking product as a whole. The processing data can be connected via a network via an RFID reader to determine the product name, manufacturer, expiration date and all other relevant project information. SHENZHEN CHONDEKUAI TECHNOLOGY CO.LTD , https://www.szsiheyi.com