Fixed-line Sms-based Remote Data Acquisition Applications

It is an new technique of teledata acquisition which is based on service, provided by China Telecom, transmitting short messege by fixed telephone network. After studying and analysing the interrelated knowledge about this new service, In this paper such a new method used for teledata acquisition is introduced and used for realizing the Teledata From Ammeter Administrat System.It is comprised of Short Message Processor and TFAAS application.The former is concerned on software for AT89C51 and other hardware which include FSK demodulation circuit soft keyboard circuit and so on. Its software functions in receiving and analyzing short message and sending teledata .The later, related to program technique such as multithread communication by serial port COM component and so on, is Windows application based on Sql Sever database which is developed in VC++6.0 environment . It mainly performs som tasks such as sending orders storing and operating teledata and others.