关键词：GSM/GPRS;DLT-645规约;ARM9;S3C2410EP实验板;AMR
The Design and Realization of Electric instrument Acquisition
Terminal Based on Embedded-Linux System
Abstract
Electricity is a wildly used power, it involved in all field of the country and the life of people. With the fast developing of economic of our country the best request of development of electric industry are the improvement of the power supply quality and the power supply reliability, and the implementation of highly effective accurate electric instrument acquisition systems.
With the improvement of people's living standards, house meters, such as ammeter, water meter and gas meter, are used more widely. At the same time, reading the meters has become a mass and troublesome work. Traditional ways no longer adapt to the development of society any more. However, with the help of computer technology and communication technology, it is possible to read meter automatically. All kinds of AMR (Automatic Meter Reading) come to existence, which not substitute the manual work but also establish the base for better service.
This article uses the ARM9 S3C2410EP experiment box made by Samsung Company as target machine, uses the RS232 serial port to communicate with ammeters and acquisition data, realized an automatic electric instrument data acquisition terminal. This article’s design uses the multi-process and multi-thread programming; the program can automatically read ammeters’ data according to the DL/T645 protocol and save the data in fixed time. It will send a GSM short message to a fixed mobile phone if unusual data is gathered.
