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This paper proposes a small, power saving embedded Web server for home appliances. The proposed device operates with a real-time operating system on a 32 bit RISC microprocessor. A TCP/IP protocol stack, HTTP, FTP, SNTP server and client applications were developed. The prototype server requires one fortieth the power of a general server using a PC. The software resources are about 1.8 MB. Demonstrations of general Web services and functional tests of remote manipulation via the Internet were conducted to verify the prototype system. The verification results showed the texts and images stored in the server were displayed dynamically without stress. The operation of remote controlling the server through a PC connected with a LAN was also confirmed to be stable. Therefore, the proposed Web server can be easily implemented into home appliances, which require space saving, power saving and low price. |
