Abstract: Smart household appliances system consists of three parts: control terminal, device side and cloud. The smart household appliance management unit runs between the device side and the cloud. Its functions include not only connecting all sub-devices which interface types include ZigBee, Wi-Fi, RS232, RS485, UART, etc, but also connectintg the cloud. The unit can establishing a long-term connection with the cloud which enables the sub-devices to register in the cloud, log in, reporting status data and getting commands from the client. The smart household appliance management unit integrates modules such as low-level device drivers, protocol analysis and cloud interaction, which not only realizes the data transmission between LAN and WAN, and the multi-protocol interoperation between sub-devices, but also implements the function of device management such as device registration, cancellation, login, logout, etc.

Key words: Household appliance management unit, Multi-protocol interoperation, Device management