Remote Automatic Data Transmission System Based on Telephone Line
Chunguang Li · Automation and Instrumentation · 2009
An automatic communication system based on information collection which is based on telephone line and using the communication of frequency shift keying was introduced in this paper.This system can gather and storage the meter data automatically,as well as to long-distance control the meters.By collecting the data accurately and in due course,it solved disadvantages such as short range,poor reliability,the need of wiring and high cost in the cur-rent data collection system.This kind of data communication method can be used for industrial monitoring and intel-ligent community building,particularly in the controlling the non-intelligent community intelligently.