System Based On The Gprs Wireless Transmission Of Power Parameters Of The Embedded System

Aim at meeting the requirements of electric system management automation and cyberlization, this thesis describes a system which builds up a wireless, real-time electric parameters supervisory control system depending on GPRS network of China Mobile Telecommunication Company.The system is divided into three parts: data acquisition of electric parameters, data communication via wireless network and real-time monitoring and managing information system. Among them, the first two parts are needed to be implemented in the GPRS network application system; The third part management system is run on the server of electric department.These are a lots of electric parameters to be measured, and the measurement process is time-consumption, their computations are complicated. In order to simplify the system hardware design, save CPU bandwidth, reduce the cost, a special power measurement IC CS5460A is taken to measure the electric parameters. Via the voltage and current mutual inductors, the measurements of transient value and voltage¤t RMS, power and wattless power, energy are complimented within a computation cycle. Further, power factor can be computed. The system hardware&software designs are exceedingly simplified.TCP/IP/PPP stacks are embedded in GPRS module SIM100-E in our system. Taking into account that networking data communication requires proper memory and CPU velocity, 32-bit ARM920T architecture CPU is chosen as the system control and management core. Its abundant peripherial modules integrated on-chip implement seamless connection between CPU and GPRS modem and CS5460A. It further simplifies the system design.ARM9 S3C2410 is chosen as CPU in our system. We use the S3C2410 microprocessor to control the Motorola SIM100-E GPRS module to connect the China Mobile's GPRS net to realize the remote control. S3C2410 use the AT command of the SIM100-E module to send the data to the China Mobile's GPRS server, and the server re-send the data to the computer of the control center whose IP address is gave in the data using the Internet. The compute also can use the Internet to connect the SIM100-E module whose IP address was gave by the China Mobile dynamically.Using the chosen components, hardware PCB is designed and manufactured. And the program is edited to test networking data communication. Its feasibility has been proven excellent.