| With the development of smart home technologies,the application of smart home devices is becoming more and more popular.Among them,the combination of traditional gateway devices and wireless communication technologies to realize the functions of mobile remote control of smart devices is one of the directions in the field of smart home research.At the same time,there are many kinds of communication control interface protocols for smart home devices that are currently applicable.According to the reality of the smart home market,devices produced by various manufacturers have their own interface data formats and these data formats are not disclosed to the public,which leads to poor compatibility between smart home devices,many types of terminal APPs,and inconvenient usage.Therefore,the development of a conversion system of smart home interface protocols has great practical significance for segregating the difference between device interface data formats and improving the device compatibility.This thesis studies and designs an intelligent conversion system of home gateway interface protocols from two aspects.Firstly,in order to complete the consistent of different interface protocols of smart home device,a smart home gateway that can support multiple sensors/devices is designed.Secondly,based on the gateway,a software function module of interface protocol conversion is designed and implemented to convert the communication data format of different interface devices,so as to achieve the purpose of shielding device interface diversity.The multi-function hardware platform of the intelligent home gateway adopted in our work is on the basis of MT7628 and OpenWrt.In detail,to implement the interaction with the external data,the thesis firstly crops the system kernel to extend the function of IPv4 and IPv6 interconnection.Secondly,in order to support the access of different interface protocol devices,this system has developed different interface drivers;Finally,as for the conversion between different interface protocols,the thesis designs a unified data conversion format,completes the parsing and encapsulation of control command data and collected data,thereby implementing the function of interface protocol conversion and shielding the difference of different data formats.Furthermore to verify the feasibility of the designed conversion system in this thesis,ZigBee development board is used to simulate some smart home devices,such as temperature display,smoke alarm and controllable equipment.Based on the conversion process of different sensor data on the ZigBee end,the feasibility of the conversion system of interface protocols is analyzed and verified.By analyzing the collected experimental data,we can be seen that the designed scheme of the interface protocol conversion system is feasible,and it can simplify the control of the underlying device by using the smart home gateway and improve the user quality of experience. |
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