Home Appliance Remote Control System Design

With the development of communications industries, Telephone has entered the thousands of houses. The remote control technology through telephones is also increasingly used for life. Especially after the concept of " intelligent home" been proposed, telephone remote control as a convenient and economical platform for the development of the intelligent home.This paper describes a kind of household appliances remote control system through telephone-lines. Mainly introduces the hardware electrical current and software designing process of this telephone remote-control system. This system adopts singlechip as its main part of controlling to deal with the important information processing, receive external operational orders to form various controlling signals and accomplish the recording of various information. The plug in joint of electrical current provides the connection between the singlechip and telephone trunk line. This system contains the bell checking, electronics switch control, Dual Tone Multi Frequency decode and coding and the electrical current for voice reminder. This system is connected to the two ends of the telephone, thus not interrupting the normal use of the telephone. The users can dial this telephone set from another set, obtaining ringing signals from the municipal general programme-controlled telephone system. Upon inspecting that the ringing has reached the designated times, this system will automatically hang off to enter the phase of cipher inspection. Once the right code in confirmed, this system will be able to choose whether to turn on or off the controlled appliance and return to original state after completing the operation.The practical flexible and multifunctional system can inquire the state of the remote-controlled targets convenient to control the targets, which can be widely applied in the control of home appliances, or other various control equipments. In short the household appliances control system allows people enjoy intelligent home life under a limited conditions.