绪论翻译

Abstract：With the rapid development of modern communications industry,Now telephones into almost every home in the country,The use of telephone remote control of home appliance technology has no substantial progress.“How to get the telephone remote control home appliances the technology used in our daily life？”In this article to become one of the research topic.Therefore this paper design is based on AT89C2051 single-chip microcomputer and MT8870 dual tone multiple frequency decoding integrated circuit as the core,With the help of a public telephone network,By telephone based on PLMN (land-based mobile communication network) and PSTN (public telephone networks) telephone remote control system,So as to realize the remote intelligent control equipment.The article also introduces the system composition, working principle and program design method."Ringing detection, simulation pick hang machine control, DTMF double audio decoding, voice prompt, and home appliances control" circuit, such as detailed instructions.The telephone remote control system does not require special wiring,Need not take up wireless frequency resources,Thus can avoid electromagnetic pollution;And through the embedded intelligent voice prompt,Prominent voice prompt function and password control system,Users can at the far end of a fixed telephone or mobile phone,According to the voice prompt,To all kinds of household appliances, such as rice cookers, microwave ovens and other electrical appliances) for remote ers can query their state,Provide a password processing functions,Only enter the correct password can control home appliances,To improve the security.The system design and practical,Function of flexible and varied,The system performance is reliable, operation is simple and convenient,Therefore widely used in home or other places for intelligent control of various kinds of household appliances,Is a very promising technology in the future.