Abstract
Data acquisition and transmission based on the Ethernet is a very popular solution in many different kinds of monitoring system. This paper introduces a chip W5100 which is with network interface. The chip integrates TCP/IP hardware protocol stack and supports a variety of network protocols. The internal structure of the W5100 and its register function are introduced, besides that, the hardware circuit and the program design are given based on the STM32 processor. Focuses on the MAC address binding and resuming send program in multiple points building energy consumption monitoring system so as to enable quality of data transfer. At present, this data transmission system has been successfully applied in many building energy consumption monitoring projects, and the results show that the system is reliable and stability, and can satisfy the requirement of data transfer.
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