SMArt home appliance PCB controller solution
With smart home appliance PCB controller, users can control the running state of home appliances anytime and anywhere through SMS; The running status of household appliances can also be echoed to users in real time, so that users can send the next instruction; The program can also realize the time switching function of home appliances through smart's internal preset PCB controller This smart home appliance controller is not only applICable to ordinary residential communities, but also can further expand the smart home appliance control system applied to high-end villas, which is of great significance for improving people's quality of life
2 Overall structure and function of smart home appliances PCB control system
The smart home appliance control system includes smart home appliance controller, remote communication control system and PCB wireless remote sensing control system. The core module is the smart home appliance controller, which is connected to the remote communication control system, and then controls various home appliances through the wired or wireless remote sensing control system. The functions to be realized by the smart home appliance control system are basically realized by the smart home appliance PCB controller.
The main functions of the smart home appliance control system are:
Family safety: In the smart home appliance control system, various PCB sensors are connected, including infrared detection sensors, smoke detection heads, magnetic door alarms, gas detection heads, etc. These sensors can collect information in real time and then transmit it to the smart appliance controller. The smart home appliance controller analyzes the transmitted information according to the preset program to achieve anti-theft and fire prevention functions, and has the vehicle owner identification function. Once strangers break in illegally, it will automatically call the police.
Circuit board

Household appliance control: no matter where users are, they can control the opening or closing of household appliances by sending SMS. For example, users can preheat the air conditioner and turn on the lighting system in advance through the smart home appliance control system on the way home from work.
Information service: Through the smart home appliance control system, users can also enjoy various online services more conveniently, such as online ticket booking, online shopping, remote education, etc.
All these functions can be realized through the smart home appliance control system, but this paper only discusses the core module of the smart home appliance control system, namely the smart home appliance controller.
3 PCB design of smart home appliance controller
3.1 Workflow of household appliance controller
Smart home appliance controller includes SIM card. With this SIM card, you can verify the user's permission according to the received mobile phone control information. After the authentication is completed, if the operation permission is not met, the smart appliance controller will give back a prompt message to the user. If the operation permission is met, the smart home appliance controller will control the home appliance according to the user's control command, and at the same time echo the running state of the home appliance to the user.
3.2 Principle block diagram of home appliance controller
The hardware circuit constituting the smart home appliance controller is shown in Figure 1.
Keyboard control module. Through the keyboard control module, the preset settings of household appliances can be realized, such as controlling the timing switch of the TV, opening or closing the stepping motor regularly, and opening and closing the curtains regularly.
Wireless receiving module. When the user controls the home appliance through SMS, the smart home appliance controller receives the user's control command through the wireless receiving module.
Zigbee communication module. After receiving the user's control command, the smart home appliance controller controls the home appliance through the Zigbee communication module.
Information collection module. After the smart home appliance controller controls the home appliances according to the user's control command, it uses the information collection module to collect the running status of each home appliance and feed back the collected information to the user. For example, after the air conditioner is turned on for a period of time according to the instructions of the user, the indoor temperature will be echoed to the user.
3.3 Software design of smart home appliance controller
Software design mainly includes: miniGUI programming of control interface, wireless communication programming, home appliance operation control programming, and embedded Linux operating system transplantation. The programming of the control interface is based on the graphical interface programming of miniGUI version 1.3.3, which is very conducive to human-computer dialogue. The porting of embedded Linux operating system requires the porting of vivi code, the tailoring and porting of kernel, and the generation of file system. Since the Linux source code is open source, we can customize the kernel according to the needs of hardware design, and run the operating system with a graphical interface on a small storage space.
Four key technologies in the design of smart home control system
PCB interface and standard
Domestic household PCB appliances have different interface standards according to different manufacturers, which brings difficulties to the centralized control of equipment. When designing a smart home appliance controller, each home appliance is equipped with a terminal controller. The terminal controller can be connected with the main controller to form a piconet, which is equivalent to unifying the interface standards of various household appliances to achieve intelligent control