With the development of science and technology and the improvement of people’s living standards, people pay more and more attention to the comfort, safety and convenience of their living environment. In recent years, the rise of smart home system meets people’s needs. It effectively establishes a home information network in the home environment, combines various household appliances into an organic whole, carries out centralized or remote intelligent control and management of household appliances, and can exchange information with the outside world.
Due to too many wired communication connections, complex modes, many hidden dangers in the line, and low comprehensiveness and intelligence, wireless communication is the focus of research in various communication industries in recent years. At present, the wireless transmission technologies of smart home system mainly include ZigBee, Wi Fi, LANYA and Z-Wave.
Due to the popularity of Bluetooth, the smart home system controlled by Bluetooth has inherent advantages over other technologies, and its characteristics of low power consumption, fast transmission and long distance add points and color to the application of Bluetooth technology in smart home. With the further development of wireless Bluetooth technology, the continuous expansion of product scale, the increasing maturity of technology and the decline of price, Bluetooth technology is gradually applied to industrial fields and families. Due to the particularity and advantages of wireless Bluetooth communication media, it can be flexibly applied to smart home information network.
Application of Bluetooth in smart home security
The security system can be divided into three parts: defense alarm system, video monitoring system and access control system. Using Bluetooth to control the defense alarm can realize real-time detection, meet the needs of users’ remote monitoring and reduce the false alarm rate.
As a smart home, the video monitoring system includes three main parts – monitoring center, host control and data processing. Using Internet and community network link, the wireless transmission of USB image acquisition is realized through Bluetooth, the image motion is detected, and the short message alarm is realized by GPRS.
The access control system mainly includes two main functions: automatic identification and security management. Through the detection of passage objects, it realizes the security control of access, real-time monitoring and post inspection, and identifies and records the access of personnel. Bluetooth technology can be used to control access control through the password of mobile client.
Application of Bluetooth in smart home appliances
The home appliance system in smart home is generally composed of five parts: smart wear, light control, video and entertainment, smart switch and smart home appliance.
Smart wearable devices refer to independent wearable electronic products such as smart watches and smart phones. The low-power Bluetooth communication technology is used to detect the temperature, humidity, light and other data of the environment, and the wireless transmission technology is used for security alarm. Bluetooth light control system takes mobile phone and PDA as the control end to realize the light switch control, color control and brightness control, and cooperate with the timing function to control the light action.
The audio-visual entertainment system is based on the wireless Bluetooth audio-visual stereo wall. It integrates TV, Internet network, wireless Bluetooth and stereo equipment to realize the wireless connection of audio-visual entertainment. The intelligent switch receiver receives the command transmitted through Bluetooth to realize the light control.
Connect the receiver between intelligent power facilities and lamp tube appliances to replace the traditional manual switching mode and freely switch lamps, light sources, brightness, etc. Smart home appliances include refrigerators, washing machines, microwave ovens, televisions and other large and small home appliances. They are connected with the master station through Bluetooth wireless communication technology and obtain the use information of home appliances through Internet network.