With the development of science and technology and the improvement of people's living standards, people are paying more and more attention to the comfort, safety and convenience of their living environment. The smart home system that has emerged in recent years has met the needs of people. It effectively sets up a family information network in the home environment, combines various home appliances into one organic whole, and intelligently controls the home appliances in a centralized or off-site manner. Manage and communicate with the outside world. 　　
Due to the excessive wiring and complicated methods of wired communication, there are many hidden dangers in the line, and the comprehensiveness and intelligence are not high. Therefore, wireless communication is the focus of research in various communication industries in recent years. Now the wireless transmission technology of smart home systems mainly has ZigBee, Wi-Fi, Bluetooth and Z-Wave.
Due to the popularity of Bluetooth, the Bluetooth-controlled smart home system has inherent advantages over other technologies, and its low power consumption, fast transmission, and long distance are more important for the application of Bluetooth technology in smart homes. With the further development of wireless Bluetooth technology, the scale of products is expanding, the technology is becoming more mature and the price is falling. Bluetooth technology is gradually applied to the industrial field and the family. The speciality and advantages of the wireless Bluetooth communication medium make it flexible and flexible for use in smart home information networks.
Bluetooth in smart home security applications
The security system can be divided into three parts: defense alarm system, video surveillance system and access control system. Real-time detection can be realized by using Bluetooth control defense alarm to meet the user's remote monitoring requirements and reduce the false alarm rate.
The video surveillance system as a smart home includes three main parts - monitoring center, host control, and data processing. Using the internet and the cell network link, wireless transmission of USB captured images is realized through Bluetooth, and motion detection of images is performed, and SMS alarm is realized by using GPRS.
The access control system mainly includes two main functions of automatic identification and safety management. Through the detection of the passage passage object, the access control security control, real-time monitoring and post-mortem inspection are integrated, and the personnel entry and exit situation is identified and recorded. Bluetooth technology can be used to control access control through the password of the mobile client.
Bluetooth in the application of smart home appliances
The home appliance system in smart home is generally composed of five parts: smart wear, lighting control, audio and video entertainment, smart switch, and smart home appliance.
Smart wearable devices refer to stand-alone wearable electronic products such as smart watches and smart phones. Use low-power Bluetooth communication technology to detect environmental temperature, humidity, lighting and other data, and use wireless transmission technology for security alarms. The Bluetooth lighting control system uses mobile phones, PDAs, etc. as the control terminal to realize the light switch control, color control, brightness control, and 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 wireless connection of audio-visual entertainment. The smart switch receiver receives light control implemented by commands transmitted via Bluetooth.
The receiver is connected between the smart power facility and the lamp appliance to replace the traditional manual switch mode, and the lamp, the light source, the brightness, and the like are freely switched. Smart home appliances include small and medium-sized home appliances such as refrigerators, washing machines, microwave ovens, and televisions. They are connected to the main station through Bluetooth wireless communication technology, and obtain information on the use of home appliances through the internet network.
Conclusion
With the popularization of network technology and automation technology, scattered and single-function home appliances will be phased out, and smart home networks and smart homes will become the mainstream of China's future development. From the initial Bluetooth transmission of data, Bluetooth technology is widely used on mobile phones, and then the popularity of Bluetooth headsets and Bluetooth wireless mice, and nowadays the most popular Bluetooth smart home system, Bluetooth's convenience for people's lives is self-evident, The adoption of Bluetooth in future smart homes will undoubtedly bring great convenience to users.
After all, with its high configuration ratio in electronic products, people's acceptance of new Bluetooth products will be higher than ZigBee, NFC and other products. Electronic curtains, vacuum cleaners, range hoods, smart wearables, and low-power Bluetooth 4.0 will have a larger application market.
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