Abstract
Concerning about the fact that the quality of citizen’s daily life is improving in recent time, the construction of smart home has become as mainstream. We designed the intelligent household control system which achieved the muti-device communication through Modbus/RTU protocol, including the master device (AT89C51 singlechip), and the slave device. The master device took interrupt mode to send and receive data and realized the function that the slave device could receive, process, framing and send out the messages by adopting modular programming. The conflict of electrical level because of muti-device communication was solved effectively by designing the matched communication interface according to the Modbus protocol. This system has been tested to be useful and stable in basic control for intelligent household device. It can be easily achieved, duplicated and transplanted due to its minimal and low cost design.
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