System for Household Electronic Appliance Base on The
Microcontroller
Abstract
With the rapid development of electronic products, mobile phone and call to the
people, it is not a new word, but how to use mobile phones and phone for household
electrical appliances for remote control technology still has not yet mature. This
research topic is mainly aimed at how to household appliances remote control. As we
all know, in recent years through the development of electronic and technology more
and more mature, so this paper through the telephone to design to achieve the purpose
of remote control household appliances. The system mainly to AT89C51 single-chip
microcomputer and MT8870 dual tone multiple frequency decoding integrated circuit
as the core, with the aid of the public telephone network, so it can realize the remote
home appliance equipment intellectualized control. This paper mainly introduces the
overall framework of the system, working principle and program design method of
"ringing detection circuit and analog pick hang machine control circuit, dual tone
multiple frequency decoding circuit, voice prompt and household appliances control
circuit" and so on all has made the detailed explanation. The user can in the far end of
a fixed phone or mobile phone sending DTMF dual tone multiple frequency signal,
realizes to the proximal household appliances remote intelligent control. At the same
time also can send voice signal let the user to understand the relevant state controlled
object, so as to provide the corresponding solutions. This device not only suitable for
family, also applies to large stores and enterprise unit. This design is not only easy to
operate, simple, and high reliability, it is the future very promising new technology
products.
Key Words: AT89C51 single-chip microcomputer DTMF dual tone multiple
frequency decoding circuit Ringing detection Pick hang machine control.
