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1.Overview
The Tongjiuzhou smart home system adopts the most advanced and commonly used radio frequency communication technology on the market, and adopts the international standard Zigbee system. The Zigbee system forms a self-organizing wireless network, through the air waves, penetrating obstacles such as walls, to achieve remote control, so as to achieve remote control of electric lights, electrical appliances, curtains, security and other electrical equipment, and can monitor the status of electrical appliances through the control center, and control The center can send the status of electrical appliances to the monitoring center, mobile phones and other terminals, so that no matter where you are, you can monitor the situation at home and control the electrical equipment at home.
The Tongjiuzhou Smart Home System eliminates the trouble of centralized wiring, makes installation and maintenance more convenient, and greatly saves engineering costs. And because Zigbee can form a self-organizing network, you can add or reduce electrical appliances or equipment that need to be controlled at will without adding additional control costs.
2.System composition
The system integrates wireless communication technology, automation control technology, sensor technology, WSN networking technology, software technology, and database technology. The system mainly includes three parts (as shown in Figure 1):
control center
Remote monitoring terminal
Terminal control
2.1 Control Center:
The control center can be a remote control, a PDA, or a scene control panel, etc.; the control center sends out various control commands through the control software, which can realize the overall control of the terminal, single lamp control, scene control, timing control, and visualization parameter settings.
The control center can also send information to the remote monitoring terminal through GPRS or 3G, etc., so that no matter where the user is, he can monitor the home situation and control the electrical equipment in the home arbitrarily.
2.2 Remote control terminal
The remote control terminal can be a PC, mobile phone or other equipment; it can remotely receive data information from the control center to achieve the purpose of real-time monitoring; and can send control commands to the control center, and the control center controls the terminal equipment.
In this way, you can turn on the air conditioner and rice cooker at home with your mobile phone before you get home from get off work.
2.3 Terminal control
The terminal controller receives commands from the control center, performs operations such as turning on, off, and dimming lights or controls other equipment, and can also transmit parameters such as voltage, current, temperature and humidity back to the control center.
The remote control button of the control center can be bound to the terminal node that needs to be controlled to realize functions such as scene setting.
3. The advantages of Zigbee smart home compared to traditional 433M smart home system
(1) Standardization: As long as it meets the zigbee standard, all products and modules from different manufacturers can be added to the network
(2) Zigbee is the current technology development trend. More and more companies and products will use the Zigbee standard, which will also make the product application range larger and lower costs, ensuring your investment and sustainable development.
(3) The WSN wireless self-organizing network is automatically maintained and repaired. Each node can be used as a router. It can accommodate up to 65,535 nodes, which makes the Zigbee network cover a large area.
(4) Easy to deploy and expand, nodes can be added or reduced at will without affecting the normal use of the system.
(5) It is easy to integrate the existing Internet network and realize the Internet of Things, so that you can monitor the information you need in real time at any place and at any time.
(6) Convenient operation, visual parameter setting, such as photosensitive control parameters and timing time, etc.; two-way control and signal feedback
(7) Low power consumption: receiving current ≤27mA, transmitting current ≤40mA.
(8) Strong anti-interference ability: 16 channels are provided, and reliable channel communication is automatically selected according to the environment.
(9) Remote control command response time <3 seconds
(10) Remote control accuracy rate ≥ 99.99%
(11) Alarm response time <3 seconds
4.Overall structure
(1) Smart switch, smart panel, and zigbee dongle, these three products have built-in zigbee modules. After they are turned on, they automatically form a zigbee network. The actual test capacity of the network is more than 1000 nodes.
(2) The smart switch and the smart panel can learn from each other. For example, you can learn the “scene 1” of the smart panel as the number 1 of the smart switch, and “scene 2” can be learned as the light 1 and 2 of the smart switch. After learning , Press the “Scene 1” of the smart panel, and the No. 1 light of the smart switch will be on; press the “Scene 2” of the smart panel, the No. 1 and No. 2 lights of the smart switch will be on.
(3) The smart switch can also be used as an ordinary switch.
(4) The zigbee dongle is connected to the PC through the USB hardware, and the serial port is simulated via the USB. The PC can control the zigbee dongle through a simple serial program (such as HyperTerminal) to achieve the purpose of PC monitoring and lighting control.
Please contact the author for the detailed plan.
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