【 Weak current College 】 secrets of smart home – radio frequency technology (how to allow me to listen to our household appliances)

Many people are very envious of smart home life, but live in an old House, many wiring is not taken into account, so I do not know how to do this kind of intelligent life. In fact, we're going to talk about another kind of smart home technology-home wireless RF technology is designed for completion has been renovated but not advance wiring housing. A first look at wireless RF technology we take a look to the Crown. Wireless RF technology is a short-range, low complexity, low power, low data rate, low-cost wireless communication technologies. The advantages of this technology is part of the product without rewiring, use point-to-point radio frequency technology to home appliances and lighting control, installation settings are relatively easy, mainly used in the implementation of certain electrical equipment or lighting control, cost is moderate.　　This type of system function is relatively weak, compared to a single control mode and vulnerable around wireless device environment particularly in the frequency and obstructions interference and shielding; more applicable to the newly renovated and has been renovated. This is our family network in wired networks and wireless networks. Wireless network technology without wiring situations can also be set up family LAN. While wireless RF technology also is through high-frequency wireless frequency (315 or 433.92 MHz) point-to-point transmission, lights, curtains, household appliances, such as remote control function. Such technology has been decorated by the user is ideal, without wiring, no damage to the original home of beautiful.
Using radio frequency technology products, you can be home all electric strings into a single network, we here call it smart home wireless network, this network, we can remote control so that each cold appliances are dictated by us. How to make household appliance orders from us?
Home electrical appliances, lights, fridge, air conditioning, computer, home theater ... Some are native to the remote control capabilities, such as air conditioning, TV ... There is no remote control functionality, such as water heaters, microwave ovens, electric cooker, refrigerator ... While different remote control device and the remote control with a different, mutually and cannot be generic, so home light remote control has four or five. So how to remote control does not have a remote control device?, and how to make a remote control multiple remote control functions? from the above described as we know, based on the wireless radio frequency technology products are able to help us solve these problems, but how did they achieve?
Smart home wireless network including a home gateway, as well as a number of child nodes in wireless communications. In home gateway has a wireless transmitter module, each of the child nodes are attached to a wireless network receiver module, a wireless network transceiver modules, data at the gateway and transmitted between a child node.
1. the home gateway
Home intelligent gateway is the home of an intelligent control center with embedded processor and Arm Linux operating system; with touch of TFT LCD screen (5 ~ 10 inch), to a 14-channel alarm input and 2-way alarm control output, when network events or telephone alarm; through the gateway wireless RF module and all child nodes in the network to communicate, to achieve appliance control; built-in Web server, through the Web for remote control of home appliances. While home gateway also has a photo and message, MP3\MP4 player functionality, you can easily host for the warm comments, etc. 2. wireless RF wireless communications child nodes
In a different control systems, wireless communication child nodes have different functions:
● Lighting control, wireless remote control switch node implementation to light switch and dimming function;
● Power control, wireless remote control socket implementation on electrical power for remote control;
• Curtain control via wireless curtain controller on electric curtains motor to remote control;
● Electric appliance control, through wireless infrared Repeater module on the infrared remote control remote control home appliances;
• Relay output of control for electric Windows and doors, gas valves, and other I/O control.
Ordinary household or commercial sink, typically using infrared (IF), signal transceiver requirements straight path, vulnerable to outside of Eclipse. Using radio frequency technology, signal transceiver is not affected by foreign objects blocking, where system coverage, regardless of any position or angle, receive both accurate and reliable. In addition, the signal according to the use of different areas, from 315 or 434MHz radio frequency transmission, through wall, the wall without any outside of Eclipse. System in an open environment, coverage of up to 100 meters. Coupled with the low power consumption wireless RF coverage, go to any corner of the control is the most convenient and reliable, free and enjoyable.
With a 200-square-meter house, for example, in the room of about 30 m, to 100-meter range calculation, users wherever, various switches can receive remote commands, lighting can always match your pace. Each remote control, switch or dimmer switch is equipped with a wireless RF transmitter or receiver, so you can direct the remote control to switch on command, control, preset lighting situations, without any wires connected. But the distance of r/c indoor 30 m is a wireless radio frequency technology for maximum limits, if more than this distance, wireless signal vulnerable to co-channel interference and signal attenuation, this is a wireless radio frequency technology and largest of the defect. Wireless radio frequency control programmes 1. Lighting control
Wireless RF lighting control system consists of smart panel switches and dimmers, dimmer to send and receive command signal command through radio transmission, rather than through a family of power line transmission. Each panel switches are equipped with a different remote identification code. This code uses 19-recognition technology so that the receiver can accurately distinguish each directive. Even the neighbours at the same time, it will not interfere with their remote control and transmission errors occur.
Dimmer switch also built-in RF wireless RF transmitter to be independent of the remote control or move switch, control floor lamp or table lamp switch or adjust the brightness of light. Dimmer switch in the back also comes with a clip, you can freely in wires or other conspicuous, not easily lost, flexible and comfortable. Reduce interference to transmit or receive instruction moreAnd accurate.
2. wireless smart socket
Wireless Smart socket series mainly through radio frequency technology for non-remote control appliances (such as water heaters, fans, etc.), power remote control, not only for these appliances increased wireless remote control functionality, but also maximum energy savings, protection and safety.
3. sight remote control mode
Scene mode is available through advance settings, and you can restore a specific lighting environment. It does this by locking a light switch and light intensity level to achieve a particular lighting environment. For example: leave or sleep light full-closed, urinate, environment, entertainment, environment, etc. Sight remote control can not only be a separate control switches and Sockets can also be on their entire scene control lighting environment.
4. the information appliance control
Information appliance control is an integrated infrared control and wireless control of multifunctional remote control system. It can control up to five infrared devices (such as: TV, air conditioning, DVD, amp, curtains, etc.) and switches, outlets, and other wireless devices. Information appliance control system is mainly composed of information appliance controllers and smart remote control switch.
Information appliance controllers can turn ordinary infrared electrical remote encoding through learning way dump down to replace the original appliance remote control. At the same time it themselves or wireless remote control, you can launch 433.92MHz frequency control signals, so it can control the frequency bands of smart switch, intelligent Sockets as well as wireless infrared Repeater, and so on.
Information appliance controller how air conditioning remote control?
Air conditioning infrared codes and other home appliances of infrared codes is very different from, the air conditioning every key on the remote control to the infrared codes is not fixed. For example, pressing temperature increase or reduce the keystrokes, it does not simply send a fixed temperature increase or decrease the infrared code, but to send a current of air conditioning working status code (the code contained conditioner what currently is the cooling or heating?? wind? what's the point of view of wind?). Therefore, information appliance remote control cannot simply learning air conditioning remote control on a few keys to implement complete control for air conditioning. Users can only be achieved through learning air conditioning more commonly work status to achieve control of air conditioning.
5. telephone remote control
Telephone remote control system is implemented through a call to control their infrared electrical appliances (air conditioning) and wireless switches, outlets. You can pick up the phone the phone directly on the controller, you can also enter the settings on the phone; by telephone controller can control the living room, study room and the bedroom, the room lights, outlets, and air conditioning.
Next, we passed a practical case to look at the complete some smart programme needs what wireless RF products.
1. floor plans
Triple room: the master bedroom, bedroom, study room, living room, dining room.
2. the implementation of the function
Home intelligent household appliances, lighting systems; remote smart control appliance system (telephone, Internet); the home security system; Visual intercom system.
3. system chart
Figure in the leftmost two vertical dashed line infrared remote control signals; and other RF remote control signal dashed; arrowhead real black line for security signal; the direction of the arrow direction for signal transfer. In this diagram, we focus on the family part, part for the whole community community project implementation to use.
4. use of the product
● Intelligent gateway
A family safety features
Provides 14 Wired zone access, 2-channel output; wireless; defense, emergency and other functions; telephone and network deployment, with linkage control function.
B Visual intercom (optional)
Through the connection with the door machine, user and guest video intercom, unlock.
C telephone remote control
Smart Gateway embed telephony module, implemented through the user phone line; telephone alarm function through the gateway telephony module for remote deployment, security operations; household electrical appliance, lighting systems for remote phone control.
D network remote control
Through the network to the home of home appliances, lighting, sockets, detectors for remote network control within the security system; home
Commission for remote cloth disarmed, eliminating police, alarm, etc.
E family voice
Record a voice message.
F-mail service
E-mail function.
● Information appliance controllers
Realization of the family all local and remote control operation, and intelligent Sockets, switches, DVD remote control, TV remote control, curtain controller, etc. directly on code implementation and control. Is a real multifunctional remote control.
● Other remote control
Including scene scenes of remote control, mini remote control and enhanced sight remote control can be realized on light, single control and different combination control.
● Intelligent switches, outlets,
And remote control combined with intelligent control lighting effects.