Technology: Radio Frequency Smart Home Technology – Smart Home – Smart Home Industry
HC intelligent home network Many people are envious of smart home life, but because of living in old houses, a lot of wiring has not, so I do not know how smart living. In fact, today we are talking about another kind of smart home Technology ?? Home wireless RF technology, should that have been fitting for pre-wiring of houses completed but not prepared.
Radio frequency technology Radio frequency technology is a short distance, low complexity, low power, low data rate, low-cost wireless Communicate Technology. This technique has the advantage of some products without re-wiring, using point to point radio frequency technology, to realize Home Appliances And lighting control, more convenient installation settings are mainly used to achieve certain electrical appliances or lights on the control of moderate cost. Function of such systems is relatively weak, relatively simple control method, and the vulnerability of wireless devices around the Environment In particular, and with the frequency interference and shielding obstructions; more applicable to the newly renovated family households and has been renovated.
This is our home network mentioned in the wired network and wireless network difference. Wireless network without wiring in the case can also be set up home LAN. The radio frequency technology that is through high frequency radio frequency (315 or 433.92MHz) point to point transmission, to achieve lighting, curtains, household appliances such as remote control. Such technology is finished remodeling is ideal for customers without pre-wiring, will not Damage The former home of the beautiful.
Radio frequency-based product, you can house all of the electrical strung together a network, we here call it smart home wireless network, in this network, we are free remote control, so that each cold appliances are take orders from us.
How to make household appliances take orders from us?
Many home appliances, lighting, refrigerators, air conditioners, computers, home theater … … Some belong to itself with remote control capability, such as air conditioning, TV Machine … … and some do not have remote control functions, such as water heaters, microwave ovens, rice cookers, refrigerators … … but with a different remote control devices has different Remote control , Each other can not common, so at home there is 45 light remote control. So how do you remote control does not have remote control devices? And how to make a remote control of multiple remote control functions? We know from the above description, based on radio frequency technology products can help us solve these problems, but how they achieve it?
Smart home wireless network includes a home gateway and the number of child nodes of wireless communications. In the home gateway has a wireless transmitter module, each child node are connected through a wireless receiver module, through the wireless network transceiver, the data in the gateway and the sub-transmission between nodes.
1. Home Gateway Intelligent Gateway is the family home, an intelligent control center, the operating system with embedded processors and Armlinux; with the TFT LCD touch screen (5 to 10 inches); has 14 inputs and 2 alarm points alarm control output, alarm occurs when the network or a telephone; through the gateway of the wireless RF modules and network nodes communicate with each child to achieve appliance control; built-in Webserver, achieved through the Web-remote control home appliances. Gateway also has pictures of the family at the same time, message, MP3 \ MP4 player features to facilitate the master for such a warm message.
2. Radio frequency wireless communication sub-node
In different control systems, wireless communication sub-nodes with different functions:
lighting control, wireless remote control switch on the light switch node to achieve the functions and dimming;
power control, wireless remote control socket on the electrical power to achieve remote control;
curtain control, a wireless controller for electric curtain curtain motor remote control;
appliance control, wireless infrared remote control relay module on the remote control of home appliances;
Relay output control to achieve power windows, gas valves and other I / O control.
Ordinary home or commercial receivers typically use infrared (IF), the signal transceiver requirements straight path, easily blocked by foreign objects. Using radio frequency technology, from foreign objects blocking the signal transceiver, where the system coverage, regardless of any position or angle, to receive both accurate and reliable. In addition, the signal according to the different use areas, by the 315 or 434MHz radio frequency transmission through the walls, and free from any foreign object blocking. System in an open environment, coverage up to 100 meters. With radio frequency low power consumption, wide coverage, both go to any corner of the control are the most convenient and reliable, the free enjoyable.
To a 200 square meters of housing, for example, about 30 meters indoors, 100 meters, therefore in order to calculate the coverage, the user no matter where each switch to receive remote control commands can be, always with your light pace. Each remote control switch or dimmer switches are equipped with radio frequency transmitters or receivers, so the remote control to issue commands directly to the switch to control the default lighting situations, without having to connect any wires. However, remote indoor 30m range radio frequency technology is already the biggest limit, and if more than this distance, wireless signal vulnerable to the same frequency interference, and the signal weakened, and this is one of the largest radio frequency technology deficiencies.
I am China Manufacturers writer, reports some information about used toshiba copiers , xerox docutech 135.
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