Remote-Controlled Household Appliances Based on PTN (Public Telephone Network)

Most electric equipment manufacturers are interested to realize the technology of remote controlled electric equipments through personal terminals.Based on the analysis of household intelligentization,we introduce an intelligent remote control system,which implements the control of multiple household electric appliances by DTMF on the existing public telephone network(PTN).Systematic hardware components and their operation principles and the design and implementation of software are mostly discussed.