毕业论文-基于单片机的家用电器电话远程控制系统43119.docVIP

基于单片机的家用电器电话远程控制系统 ? 关键词　AT89C51；远程电话控制；DTMF；智能家电 The Telephone Remote Control System for Household Electronic Appliance Base on The Microcontroller Abstract The article designed the remote telephone control system which based on microcontroller AT89C51. Basing on the PLMN and PSTN, the system which uses the core controller Single-chip microcomputer AT89C51 realizes long-distance control household appliances. The telephone control system (ITRCS) which uses the telephone net convert and voice information receives DTMF code from the telephone net, and interpret the code, the core controller controls the state of household appliances responded to the interpretation. Long distance control of telephone does not require special wires distribution and does not take up wireless frequency resources. Electro magnetic pollution can thus be avoided. The designing of a system of long－distance control based on sound processing technology and DTMF decoding technology is presented in this paper. By using sound commands of sound recognition technology, this system realizes its control of household electrical appliances through telephone networks and so realizes the intelligently control of them in residence. The embedded and intelligent sound indication, its outstanding sound function of prompt and its code control system enable the operators to timely obtain the relative information of the controlled objects through indicated sounds. The system can use telephone to control many household electrical appliances in long distance through uttering sound commands and provides the code safeguard function. Only through inputting the correct password to control them, the users can control the condition of household electrical equipment, So the system security can be improved. This system is practical, and the function is flexible, and the operation is convenient with high reliability, which can be used extensive in various kinds of control equipment to home and others field. ? Keywords　AT8