Wireless connection and lighting solutions for equ

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Wireless connection and lighting solutions for equipment in intelligent buildings

the revolution of intelligent buildings is in progress, providing better comfort and convenience for residential buildings, reducing operating costs, and improving the productivity of employees in the commercial sector. By 2022, the global market will be worth nearly $78billion

wireless control lighting is a key factor in this revolution. It allows a variety of operation modes, which helps to avoid waste of energy and the turbulence and cost of large-scale rewiring projects. Installing wireless controllers can save up to 70% of the cost of rewiring existing houses, or 15% of the wiring cost of new projects

although some new houses, such as high-end real estate, may be designed wisely from the beginning, existing houses may be upgraded in stages. Owners can prioritize heating or lighting systems as the first step in intelligent technology, and then use other intelligent functions to expand the system, such as device controllers, louvers or door locks. All types of intelligent building equipment seem to have a bright future, from simple light switches, wall plugs or radiator caps to complex central controllers. This provides an opportunity for new brands to win market share by providing products that are technologically advanced or more fashionable than those provided by more mature competitors

interoperability and coexistence will become the key issues for successful developers. Customers tend to gradually introduce smart functions to their buildings, such as plastic bags, milk bottles, clothes and so on

candidate connection standards

various connection standards for control equipment (such as lamps, radiator valves, windows) have proposed openers and electrical appliances in intelligent buildings. At present, the popular standards of certified products in the market include enocean, KNX, ZigBee and Z-Wave

enocean and Z-Wave work in the sub GHz radio band. In Europe, this is 868 MHz. Z-Wave is based on the shape network topology and supports 232 nodes at most. The protocol provides application level interoperability, and can use many Z-Wave system on chip devices, such as sigma designs zm5202. The Z-Wave stack resides on the chip and is accessed through the API also provided, which allows developers to simply load applications into the device's integrated program memory, as shown in Figure 1, ellenturner said. SOC supports single-chip solution and has all hardware functions, such as sensor ADC, 128 bit secure encryption and three terminal bidirectional thyristor dimmer controller integrated in the device

Figure 1: access the Z-Wave protocol through the provided API

Based on the extremely light radio protocol, enocean technology can realize the harvesting system of battery free modules operating from solar cells or other energy sources, such as power converters or Peltier elements, for transmitting short telegrams containing sensor data. This is a powerful proposition for items such as light switches, which can be placed anywhere in the room to communicate with line powered lighting actuators (Figure 2) built using system modules such as enocean tcm300u. Enocean switches can also be easily integrated into larger home automation networks. For example, German KNX developer Weinzierl () has established an enocean KNX switch, which receives enocean wireless telegrams and generates appropriate signals on the KNX bus

Figure 2: wireless sensor communicates with line driven actuator

KNX claims to be the only global standard approved according to iso/iec and other standards, such as en-50090 (CENELEC), en/2 (CEN), Chinese home automation standard gb/t20965 and American ansi/ashrae 135 Unlike the wireless based enocean, ZigBee and Z-Wave standards, KNX bus can operate on a variety of media, including twisted pair (KNX TP), AC power line (KNX PL) and Ethernet/wi fi (knxnet/ip), as well as wireless (KNX RF) operating in the 868 MHz frequency band. KNX association also provides equipment developers and system installers with tools independent of manufacturers

zigbee family automatically saves the special configuration file of the famous ZigBee standard based on 2.4 GHz radio, which is the existing product linearization of DSM composite resin business department. It is optimized for controlling home devices and uses ZigBee Pro like network stacks. ZigBee Pro can be implemented on various microcontrollers. Silicon labs has many ZigBee modules, such as etrx357, including a single-chip ZigBee transceiver and an embedznet lattice stack that conforms to the ZigBee Pro standard. These modules allow developers without RF experience to add wireless networking capabilities to their products

use selected standards

each standard is supported by its own alliance or association, which is responsible for managing legal aspects such as technical specifications and licensing and product certification. The certification process ensures interoperability between products from different manufacturers. OEMs wishing to penetrate any market currently using these standards must provide their new product designs for certification

generally, the road to developing certified, interoperable devices (such as lamps, switches or dimmers) begins by purchasing developer kits of sigma designs, such as RBK zw500dev con Z-Wave kit. Sigma also has many low-cost regional kits, which can allocate services for different sub bands in Europe, North America and Japan. For Z-Wave, you can also access Sigma's Z-Wave Software Development Kit SDK when purchasing the developer kit. SDK allows access to resources such as protocol libraries, application samples, and documents. Using the available tools, developers can make necessary decisions, such as hardware selection, protocol selection, and device and command classes. After completing the hardware and software development, the product can be submitted to Z-Wave Alliance for certification

centralized control

in intelligent buildings, lighting may need to be activated in several aspects, not limited to traditional manual switching or dimming through wall mounted control. The central controller can be programmed to turn on or off the lights at certain times, or in response to the occupancy sensor that also forms part of the family safety system, or the signal from the ambient light sensor, which can be used to adjust the dimming to obtain the best lighting. In addition, as consumers increasingly adopt network mobile devices, intelligent building users will be attracted by a variety of applications, These applications can control all aspects of intelligent buildings, such as lighting, heating, electrical appliances and security tablet computers or smart settings. The device that connects the intelligent building network with the Internet router provides the key to this function, as shown in Figure 3. Any intelligent building technology needs such a gateway based on IP domain, no matter whether it communicates with the tablet computer connected to the building, or connects to the Internet through the cellular or Wi Fi hotspot anywhere in the world through mobile devices. Many manufacturers provide customs, which are suitable for connecting smart home networks (such as enocean, KNX, ZigBee or Z-Wave environment) to the Internet routers of buildings

Figure 3: connecting the smart home network to the IP domain allows the use of various device control settings

application developers can take advantage of the selected technical support functions to provide convenient functions for end users. These include configuring device groups to allow click control, or creating custom scenes to automatically apply the required settings for lighting, heating, and other devices. Users can create a home theater scene, dim the lights at the same time, close the shutters, adjust the temperature, turn on the flat screen TV, or enter the sleep scene, lock the door, close the windows, turn off the heating and turn off all the lights outside the bedroom


the standards defining the connection between devices in intelligent buildings provide the structure that product developers need to be able to solve the quantifiable market. Ensure the interoperability with other existing products that have been tested in the market and show that their thermal insulation is better than polystyrene foam. The association vigorously promotes its own standards, but developers must choose according to the resources they provide and accurate opportunities and competitive evaluation

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