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From the current development of intelligent lighting control technology, the lamps add new functions such as wireless remote control and brightness stepless adjustment. From the perspective of the composition of the lighting control system, there are mainly three types of bus type, power line carrier and wireless network.
The lighting control system using the wireless network communicates by radio, and the control signals sent by the control unit of each home intelligent network control system are transmitted in the form of radio waves, and each system control unit receives the propagation information according to the system communication protocol. It is stipulated to perform corresponding actions to achieve intelligent network control. Like the power line carrier solution, the wireless solution does not have a dedicated network cable, and installation or expansion is very simple. The solution can also be powered by a battery, without the need to connect the power cord, which is very flexible and convenient, and also reduces the cost of the user. Therefore, from the perspective of technology development, wireless network technology has unique advantages and has developed rapidly in recent years, becoming a new hot spot in the semiconductor industry.
The solutions offered by semiconductor manufacturers are often more comprehensive. Freescale adopts a platform strategy for home control management systems, providing a package of solutions, including intelligent gateways, multimedia entertainment center solutions, wireless, bus data connection technology, low power consumption, high reliability. Embedded processor technology, wide operating temperature chip technology, etc.
Dr. Cai Zhen, Senior Market and Business Development Manager of Freescale Semiconductor Asia Pacific, said: Intelligent lighting systems and smart home appliances are two segments that we believe are relatively fast. To this end, we provide embedded high-reliability MCU, wireless, bus data connection scheme, gateway control system.
He also pointed out that hardware is the body and software is the soul. For the lamp and the electrical end, Freescale provides a compact open source embedded real-time operating system MQX; for wireless connection, fully understand a variety of application scenarios and provide technical support, such as a device needs to join different subnets or roaming, etc. . For gateways and convergence devices, we have an unparalleled accumulation in the Linux and Android operating systems, and our system is able to withstand the rigors of automotive equipment and backbone equipment. Cai Zhen also stressed that smart home is more important is the spirit of open source, so Freescale in addition to the patent protection part, all software is open source.
The solution of Shenzhen Lihe Microelectronics Co., Ltd. is mainly based on power line carrier. Liu Wei, the company's managing director, pointed out that in the home control management system, intelligent lighting and smart home appliances are characterized by the ubiquity of network nodes, but the data rate requirements are not high, so the power line carrier is very suitable.
Liu Wei said: Lihe Microelectronics is based on a narrowband OFDM power line carrier communication chip, and constructs a complete home PLC network platform composed of various nodes, on which various communication and control applications can be realized. Nodes can be easily placed into various lighting switches, household appliances, security sensors, etc., and communication between nodes and between nodes and server nodes through existing power lines. Through the Internet, communication and control of each node of the home network can be realized through a computer or a smart phone.
Smart lighting has become the first choice for expanding the smart home market