| Our living criterions are advancing and the wisdom of the city, the smart home market is gradually expending, was already become a symbol of people’s lifestyle. Among them, the wireless gateway as a hub of the smart home network connected indoor and outdoor communications, is a focus in the study of product research and development personnel.Going features of smart home gateway is incomplete, inflexible, high-priced, and data conveying is perplexing, it has not adapt to the requirement of the hardware of current home--convenient and fast, cheap and hight flexibility. In this paper, after studying at domestic and foreign based on the present situation of smart home wireless gateway and combined with the domestic market demand of smart home, the scheme of the wireless gateway was on the understructure of STM32F103RBT6 as main control chip, and incorporated SIM900 A, RM04 and nRF24L01 module as hardware platform solutions of the wireless gateway. Pass through the self-designed peripheral circuit of wireless gateway, and drove the communication module, was successfully constructed the hardware platform of wireless gateway.Writing the corresponding driver software to drive each modules to achieve the functons of the wireless gateway on the terrace of the hardware. Meanwhile the custom internal network wireless communication protocol was designed, and was transformed with GPRS communication network、Ethernet and Wi Fi, to achieve multifarious data transmission and control method, to fuse the multi-protocol.The design of the control software of the smart handheld terminal was an important part of the system. After analysing the two major smart mobile terminal system’s share of the current market size, was used JAVA language to write a monitoring software in Android system. The software was used visual form, through click the point to control the nodes, and provided user a great convenience.After debugging and combining the hardware and program, the running of the wireless gateway’s function was good, with a well steady property. The custom internal network wireless communication protocol was used in the wireless gateway. Thus, the problem of the data conversion between internal and external network was solved effectively by this way. And the use of the smart handheld terminal was achieved the goal to monitoring the real-time condition of the smart home by the near-far way. But then by the software program can be optimized to raise the property of the wireless gateway.The gateway as a bub of data transmission process in the intelligent home, the basic requirement of the design must be reasonable, compatible, easy, inexpensive and hight flexibility. And the wireless gateway was designed in this paper can meet the requirements above. |
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