Research Of The Distributed Measurement And Control System Based On GSM Network

The GPRS operation of GSM net supports Medium and high speed data transmission, Supports the TCP/IP protocol, can transmit data with the internet each other,Comes the cost according to the quantity of correspondence data, adapt to the industry measure and control domain as communication manner. Usually, the oil well all distributes quite broadly, the environment is quite difficult, if the observation and control system adopts the wired way to carry on the correspondence,which for the oil well, essential must involve to the cost of lays down and maintains the line. The distributed measurement and control system based on GSM network has been studied for this question. Following several aspect questions were researched in this system research.First, the present development situation of distributional observation and control system has been researched and analyzed, as well as the communicate manner of the system was researched.The GPRS service of the gsm net was chose as the communicate manner of the system.The SMS short message service was took as assistance communicate mode when the GPRS connection separation assistance, enhance the stability of the system.Next, the communicate manner which was adopted according to the system, the wireless communication module in the present market has been researched and compared. Finally chose the GR64 wireless module, as the wireless connection module of the overall system.The control and the AD conversion as well as the data storage adopt the resources which the module provides in. The system software development was realized by the development way of the embedded script, realizes the monolithic of the locale observation and control system. Moreover, the signal disposal circuit was designed.Then, related knowledge of the network correspondence was studied, the central master control system is implemented by the LabVIEW development environment, include complete the interception program of service and the procedure of receive and send. Finally, one experimental system was built, has carried on the feasibility test to the system data communication. The concrete laboratory procedure and the experimental matters needing attention were given.